Method and apparatus for wireless communication employing aggregation for digital signals

US 6,192,038 B1
Filed: 02/14/1997
Issued: 02/20/2001
Est. Priority Date: 10/18/1995
Status: Expired due to Term

First Claim

Patent Images

1. A communication system having a plurality of channels comprising,a plurality of users for transmitting user signals in user channels, a plurality of macro-diverse collector means distributed at macro-diverse locations, each of said collector means including, collector receiver means including a plurality of micro-diversity receivers each for receiving said user signals and providing a plurality of micro-diverse received signals for each of said plurality of users, collector processing means for processing said micro-diverse received signals to form collector signals including for each of said plurality of users, sequences of data bits representing the microdiverse received signals and including confidence metrics corresponding to said data bits, aggregator means for combining said collector signals from said plurality of macro-diverse collector means for each of said plurality of users to form a final sequence of data bits representing the user signals for each of said plurality of users.

View all claims

14 Assignments

Timeline View

Assignment View

0 Petitions

Accused Products

Abstract

A communication system having a plurality of forward channel communications and a plurality of corresponding reverse channel communications from and to a plurality of mobile users. A plurality of collectors are distributed at macro-diverse locations for receiving reverse channel signals from the users. Each of the collectors includes micro-diversity receivers for receiving the reverse channel signals from users. The collectors process and forward the reverse channel signals to aggregators. The aggregators combine the reverse channel signals to yield a combined signal with fewer bit errors than occur in the absence of combining.

Citations

66 Claims

1. A communication system having a plurality of channels comprising,a plurality of users for transmitting user signals in user channels, a plurality of macro-diverse collector means distributed at macro-diverse locations, each of said collector means including, collector receiver means including a plurality of micro-diversity receivers each for receiving said user signals and providing a plurality of micro-diverse received signals for each of said plurality of users, collector processing means for processing said micro-diverse received signals to form collector signals including for each of said plurality of users, sequences of data bits representing the microdiverse received signals and including confidence metrics corresponding to said data bits, aggregator means for combining said collector signals from said plurality of macro-diverse collector means for each of said plurality of users to form a final sequence of data bits representing the user signals for each of said plurality of users.
- View Dependent Claims (2, 16, 17, 22, 23, 59, 60, 61, 62)
- - 2. The communication system of claim 1 wherein said collector processing means includes a multi-sensor equalizer micro-combiner for processing said micro-diverse received signals.
  - 16. The communication system of claim 1 wherein said aggregator means includes a signal processor having a macro-diversity combiner unit for combining said confidence metrics from two or more of said macro-diverse collector signals and forms a logical 1 or logical 0 value for each bit of said sequence of data bits based on combined confidence metrics.
  - 17. The communication system of claim 16 wherein said signal processor includes a de-interleaver, a de-convolution unit and a block decoder.
  - 22. The communication system of claim 1 wherein each of said collector means further includes,control means for providing a collector time stamp for said collector signals.
  - 23. The communication system of claim 22 wherein said aggregator means includes means for aligning collector signals from different ones of said collector means based on the time stamp received from each of said collector means.
  - 59. The communication system of claim 1 wherein said user signals employ multiple access protocols.
  - 60. The communication system of claim 59 wherein said user signals employ TDMA protocols.
  - 61. The communication system of claim 59 wherein said user signals employ CDMA protocols.
  - 62. The communication system of claim 59 wherein said user signals employ SDMA protocols.

3. A communication system having a plurality of channels comprisinga plurality of users for transmitting user signals in user channels, a plurality of macro-diverse collector means distributed at macro-diverse locations, each of said collector means including, collector receiver mean including a plurality of micro-iversity receivers each for receiving said user signals and providing a plurality of micro-diverse received signals for each of said plurality of users, collector processing means for processing said micro-diverse received signals to form collector signals including, for each of said plurality of users, sequences of data bits representing the microdiverse received signals and including confidence metrics corresponding to said data bits and , wherein said collector processing means includes a micro-combiner having a plurality of single-sensor equalizers, one for each of said micro-diverse received signals, and a stage combiner for combining outputs from each of said single-sensor equalizers to form said collector signals, aggregator means for combining said collector signals from said plurality of macro-diverse collector means for each of said plurality of users to form a final sequence of data bits representing the user signals for each of said plurality of users.

4. A communication system having a plurality of channels comprisinga plurality of users for transmitting user signals in user channels, a plurality of macro-diverse collector means distributed at macro-diverse locations, each of said collector means including, collector receiver means including a plurality of micro-diversity receivers wherein said user signals are processed to yield a sequence of received bursts, each for receiving said user signals and providing a plurality of micro-diverse received signals for each of said plurality of users, collector processing means for processing said micro-diverse received signals to form collector signals including, for each of said plurality of users, sequences of data bits representing the micro-diverse received signals and including confidence metrics corresponding to said data bits, and wherein said collector processor means uses soft maximum likelihood sequence estimates to form said confidence is metrics and wherein said collector processing means processes said received bursts having burst samples, β
- _rb, where b=1, 2, . . . , B, based upon x-bit channel models where each channel model has taps, t, where t=0, 1, . . . , T, where T=2^x−
  
  1, where there is one channel model for each of said user signals, and where each channel model is an estimate of an actual transmission channel for each of said user signals, respectively, with channel target values ₀CT, ₁CT, . . . , _tCT, . . . , _TCT, aggregator means for combining said collector signals from said plurality of macro diverse collector means for each of said plurality of users to form a final sequence of data bits representing the user signals for each of said plurality of users.
- View Dependent Claims (5, 6, 7, 8, 9)
- - 5. The communication system of claim 4 wherein said collector processor means operates based upon said received bursts and said channel target values and includes,
6. The communication system of claim 5 wherein said collector processing means performs bit-by-bit processing for a current bit, b, for a once previous bit, b−
- 1, for a twice previous bit, b−
  
  2, and so on up to a (b-(x−
  
  1)) bit for each received burst having burst samples, β
  
  _rb, where b=1, 2, . . . , B, and the channel target values ₀CT, ₁CT, . . . , ₁CT, . . . , _TCT, by determining the branch metric difference values, ₀BM_rb, ₁BM_rb, . . . , _TBM_rbas follows;
  
  $\begin{matrix} \overline{(b - 1, b - 2) \dots (b - (x - 1))} & (b) \\ \overline{00 \dots 0} & 0 & {}_{0}{BM}_{b} = {(β_{rb} -_{0} CT)}^{2} \\ \overline{00 \dots 0} & 1 & {}_{1}{BM}_{b} = {(β_{rb} -_{1} CT)}^{2} \\ \overline{00 \dots 1} & 0 & {}_{2}{BM}_{b} = {(β_{rb} -_{2} CT)}^{2} \\ \overline{00 \dots 1} & 1 & {}_{3}{BM}_{b} = {(β_{rb} -_{3} CT)}^{2} \\ ⋮ \\ \overline{11 \dots 0} & 0 & {}_{T - 3}{BM}_{b} = {(β_{rb} -_{T - 3} CT)}^{2} \\ \overline{11 \dots 0} & 1 & {}_{T - 2}{BM}_{b} = {(β_{rb} -_{T - 2} CT)}^{2} \\ \overline{11 \dots 1} & 0 & {}_{T - 1}{BM}_{b} = {(β_{rb} -_{T - 1} CT)}^{2} \\ \overline{11 \dots 1} & 1 & {}_{T}{BM}_{b} = {(β_{rb} -_{T} CT)}^{2} . \end{matrix}$
7. The communication system of claim 5 wherein said collector processing means processes said received bursts having said burst samples, β
- _rb, as burst samples, ^αβ
  
  _rb, where b=1, 2, . . . , B, and α
  
  =1, 2, . . . , N_awhere N₁is a number of diversity receivers based upon x-bit channel models where each channel model has taps, t, where t=0, 1, . . . , t, . . . , T, where T=2^x−
  
  1, where there are N_achannel models, one for each of said user signals, and where each channel model is an estimate of an actual transmission channel for each of said user signals, respectively, with channel target;
  
  values for each of the user signals 1, 2, . . . , α
  
  , . . . , N_aas follows, $\begin{matrix} _{0}^{1} CT,_{1}^{1} CT, \dots,_{t}^{1} CT, \dots,_{T}^{1} CT \\ _{0}^{2} CT,_{1}^{2} CT, \dots,_{t}^{2} CT, \dots,_{T}^{2} CT \\ ⋮ \\ _{0}^{α} CT,_{1}^{α} CT, \dots,_{t}^{α} CT, \dots,_{T}^{α} CT \\ ⋮ \\ _{0}^{Na} CT,_{1}^{Na} CT, \dots,_{t}^{Na} CT, \dots,_{T}^{Na} CT \end{matrix}$ and where the received bursts samples are as follows, $\begin{matrix} {}^{1}β_{r1}, {}^{1}β_{r2}, {}^{1}β_{r3}, \dots, {}^{1}β_{rb} \dots, {}^{1}β_{rB} \\ {}^{2}β_{r1}, {}^{2}β_{r2}, {}^{2}β_{r3}, \dots, {}^{2}β_{rb} \dots, {}^{2}β_{rB} \\ ⋮ \\ {}^{α}β_{r1}, {}^{α}β_{r2}, {}^{α}β_{r3}, \dots, {}^{α}β_{rb} \dots, {}^{α}β_{rB} \\ ⋮ \\ {}^{Na}β_{r1}, {}^{Na}β_{r2}, {}^{Na}β_{r3}, \dots, {}^{Na}β_{rb} \dots, {}^{Na}β_{rB} . \end{matrix}$
8. The communication system of claim 7 wherein said collector processing means performs bit-by-bit processing for a current bit, b, for a once previous bit, b−
- 1, for a twice previous bit, b−
  
  2, and so on up to a (b-(x−
  
  1)) bit for each received burst samples, β
  
  _rb, where b=1, 2, . . . , B, and the channel target values ₀CT, ₁CT, . . . , _tCT, . . . , _TCT, by determining the branch metric difference values, ₀BM_rb, ₁BM_rb, . . . , _TBM_rbas follows;
  
  $\begin{matrix} \overline{(b - 1, b - 2) \dots (b - (x - 1))} & (b) \\ \overline{00 \dots 0} & 0 & {}_{0}{BM}_{b} = \sum_{α = 1}^{N_{a}} {({}^{α}β_{rb} -_{0}^{α} CT)}^{2} \\ \overline{00 \dots 0} & 1 & {}_{1}{BM}_{b} = \sum_{α = 1}^{N_{a}} {({}^{α}β_{rb} -_{1}^{α} CT)}^{2} \\ \overline{00 \dots 1} & 0 & {}_{2}{BM}_{b} = \sum_{α = 1}^{N_{a}} {({}^{α}β_{rb} -_{2}^{α} CT)}^{2} \\ \overline{00 \dots 1} & 1 & {}_{3}{BM}_{b} = \sum_{α = 1}^{N_{a}} {({}^{α}β_{rb} -_{3}^{α} CT)}^{2} \\ ⋮ \\ \overline{11 \dots 0} & 0 & {}_{T - 3}{BM}_{b} = \sum_{α = 1}^{N_{a}} {({}^{α}β_{rb} -_{T - 3}^{α} CT)}^{2} \\ \overline{11 \dots 0} & 1 & {}_{T - 2}{BM}_{b} = \sum_{α = 1}^{N_{a}} {({}^{α}β_{rb} -_{T - 2}^{α} CT)}^{2} \\ \overline{11 \dots 1} & 0 & {}_{T - 1}{BM}_{b} = \sum_{α = 1}^{N_{a}} {({}^{α}β_{rb} -_{T - 1}^{α} CT)}^{2} \\ \overline{11 \dots 1} & 1 & {}_{T}{BM}_{b} = \sum_{α = 1}^{N_{a}} {({}^{α}β_{rb} -_{T}^{α} CT)}^{2} \end{matrix}$
9. The communication system of claim 8 wherein N_aequals 2.

10. A communication system having a plurality of channels comprising,a plurality of users for transmitting user signals in user channels, a plurality of macrodiverse collector means distributed at macro-diverse locations, each of said collector means including, collector receiver means including a plurality of micro iversity receivers each for receiving said user signals and providing a plurality of micro-diverse received;
- signals for each of said plurality of users, collector processing means for processing said micro-diverse received signals to form collector signals including, for each of said plurality of users, sequences of data bits representing the microdiverse received signals and including confidence metrics corresponding to each bit of said sequences of data bits, aggregator means for combining said collects as from said plurality of macro-diverse collector means for each of said plurality of users to form a final sequence of data bits representing the user signals for each of said plurality of users and wherein said aggregator means receives, from N_cof said collector means, N_cmacro-diverse collector signals each having a confidence metric value, ^αc_bfor each bit of said sequences of data bits and combines said confidence metric values to form an average confidence metric, ^aggc_b, as follows;
  
  ${}^{agg}c_{b} = \frac{1}{N_{c}} \sum_{α = 1}^{N_{c}} {}^{α}c_{b} .$

11. A communication system having a plurality of channels comprising,a plurality of users for transmitting user signals in user channels, a plurality of macro-diverse collector means distributed at macro-diverse locations, each of said collector means including, collector receiver means including a plurality of microdiversity receivers each for receiving said user signals and providing a plurality of micro-diverse received signals for each of said plurality of users, collector processing means for processing said microdiverse received signals to form collector signals including, for each of said plurality of users, sequences of data bits representing the micro-diverse received signals and including confidence metrics corresponding to each bit of said sequences of data bits, aggregator means for combining said collector signals from said plurality of macro-diverse collector means for each of said plurality of users to form a final sequence of data bits representing the user signals for each of said plurality of users and wherein said aggregator means receives, from N_cof said collector means, N_cmacro-diverse collector signals each having a confidence metric value, ^α
- c_bfor each bit and each having a weighting factor, |^αc_b, for each bit of said sequences of data bits and combines said confidence metric values to form an average confidence metric, ^aggc_b, as follows;
  
  ${}^{agg}c_{b} = \frac{1}{N_{c}} \sum_{α = 1}^{N_{c}} {}^{α}w_{b} {}^{α}c_{b} .$

12. A communication system having a plurality of channels comprising,a plurality of users for transmitting user signals in user channels, a plurality of macro-diverse collector means distributed at macro-diverse locations, each of said collector means including, collector receiver means including a plurality of microdiversity receivers each form receiving said user signals and providing a plurality of micro-diverse received signals for each of said plurality of users, collector processing means for processing said micro-diverse received signals to form collector signals including, for each of said plurality of users sequences of date bits representing the micro-diverse received signals and including confidences metrics corresponding to each bit of said sequences of data bits, aggregator means for combining said collector signals from said plurality of macro-diversity collector means for each of said plurality of users to form a final sequence of data bits is representing the user signals for each of said plurality of users, wherein said aggregator means combines said confidence metrics from two or more of said micro-diverse, collector signals for each of said plurality of users and forms a logical 1 or logical 0 value for each bit of said sequence of data bits based on combined confidence metrics and wherein each of said confidence metrics is in the form of a number, c, where (—
- a)<
  
  c<
  
  (+a) and where a is an amplitude represented by one or more bytes to indicate the range for c.

13. A communication system having a plurality of channels comprising a plurality of users for transmitting user signals in user channels,a plurality of macro-diverse collector means distributed at macro-diverse locations, each of said collector means including, collector receiver means including a plurality of microdiversity receivers each for receiving said user signals and providing a plurality of micro-diverse received signals for each of said plurality of users, collector processing means for processing said micro-diverse received signals to form collector signals including, for each of said plurality of users, sequences of data bits representing the microdiverse received signals and including confidence metrics corresponding to said data bits, wherein said collector processing means includes signal measurement means for providing measurement signals measuring properties of the received user signals, aggregator means for combining said collector signals from said plurality of macro-diverse collector means for each of said plurality of users to form a final sequence of data bits representing the user signals for each of said plurality of users and wherein said aggregator means includes measurement processor means receiving said measurement signals for controlling which ones of said collector signals are combined.
- View Dependent Claims (14, 15)
- - 14. The communication system of claim 13 wherein said signal measurement means determines power and said measurement signals represent the power of the received user signals.
  - 15. The communication system of claim 14 wherein said collector processing means including channel model generation means for generating a channel model having an attenuation estimate of an actual transmission channel for each of said user signals, respectively, and said signal measurement means determines power as a function of said attenuation estimate.

18. A communication system having a plurality of channels comprising,a plurality of users for transmitting user signals in user channels, a plurality of macro-diverse collector means distributed at macro-diverse locations, each of said collector means including, collector receiver means including a plurality of micro-diversity receivers each for receiving said user signals and providing a plurality of micro-diverse received signals for each of said plurality of users, collector processing means for processing said micro-diverse received signals to form collector signals including, for each of said plurality of users, sequences of data bits representing the micro-diverse received signals and including confidence metrics corresponding to said data bits, aggregator means for combining said collector signals from said plurality of macro-diverse collector means for each of said plurality of users to form a final sequence of data bits representing the user signals for each of said plurality of users and wherein said aggregator means includes an aggregator signal processor having, a plurality of macro-diversity combiner units each for combining said confidence metrics from two or more of said macro-diverse collector signals to form a logical 1 or logical 0 value for each bit of said sequence of data bits based on combined confidence metrics, first selector means for selecting different ones of the macro-diverse collector signals for inputs to different ones of the macro-diversity combiner units, second selector means for selecting one of the outputs from the macro-iversity combiner units to form said final sequence of data bits.
- View Dependent Claims (19)
- - 19. The communication system of claim 18 wherein said signal processor includes a macro-diversity combiner, a deinterleaver, a de-convolution unit and a block decoder.

20. A communication system having a plurality of channels comprising,a plurality of users for transmitting user signals in user channels, a plurality of macro-diverse collector means distributed at macro-diverse locations, each of said collector means including, collector receiver means including a plurality of micro-diversity receivers each for receiving said user signals and providing a plurality of micro-diverse received signals for each of said plurality of users, collector processing means for processing said microdiverse received signals to form collector signals including for each of said plurality of users, sequences of data bits representing the micro-diverse received signals and including confidence metrics corresponding to said data bits and, wherein said collector processing means includes signal measurement means for providing measurement signals measuring properties of the received user signals, aggregator means for combining said collector signals from said plurality of macro-diverse collector means for each of said plurality of users to form a final sequence of data bits representing the user signals for each of said plurality of users and wherein said aggregator means includes aggregator signal processor means including, measurement processor means receiving said measurement signals for providing measurement control signals for controlling which ones of said collector signals are combined, a plurality of macro-diversity combiner unit groups each for combining said confidence metrics from two or more of said macro-diverse collector signals to form a logical 1 or logical 0 value for each bit of said sequence of data bits based on said combined confidence metrics, each of said macro-diversity combiner unit groups including a macro-diversity combiner, a de-interleaver, a de-convolution unit and a block decoder for providing data outputs, first selector means responsive to said measurement control signals for selecting different ones of the macro-diverse collector signals for inputs to different ones of the macrodiversity combiner unit groups, second selector means for selecting one of said data outputs as said final sequence of data bits.
- View Dependent Claims (21)
- - 21. The communication system of claim 20 wherein said block decoder in each of said macro-diversity combiner unit groups provides a frame erasure signal and said second selector means selects one of said data outputs not associated with a frame erasure signal.

24. A communication system having a plurality of forward channel communications and a plurality of corresponding reverse channel communications comprising,a plurality of users in a broadcaster zone, each of said users including user receiver means for receiving different user forward channel signals and including user transmitter means for broadcasting user reverse channel signals in a user reverse channel, said plurality of users providing a composite signal formed of a plurality of different user reverse channels, a plurality of macro-diverse collector means distributed in proximity to said broadcaster zone at macro-diverse locations, each of said collector means including, collector receiver means including a plurality of micro-diversity receivers each for receiving said user signals and providing a plurality of micro-diverse received signals for each of said plurality of users, collector processing means for processing said micro-diverse received signals to form collector signals including sequences of data bits representing the micro-diverse received signals and including confidence metrics corresponding to said data bits for each of said plurality of users, zone manager means including, broadcaster means including a broadcaster transmitter for broadcasting said plurality of user forward channel signals over a broadcaster range to said users in said broadcaster zone, aggregator means for combining said collector signals from said plurality of macrodiverse collector means for each of said plurality of users to form a final sequence of data bits representing the user signals for each of said plurality of users.
- View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47)
- - 25. The communication system of claim 24 wherein said collector processing means includes a multi-sensor equalizer micro-combiner for processing said micro-diverse received signals.
  - 26. The communication system of claim 24 wherein said collector processing means includes a micro-combiner having a plurality of single-sensor equalizers, one for each of said micro-diverse received signals, and a stage combiner for combining outputs from each of said single-sensor equalizers to form said collector signals.
  - 27. The communication system of claim 24 wherein said user signals are processed to yield a sequence of received bursts and wherein said collector processor means uses soft maximum likelihood sequence estimates to form said confidence metrics.
  - 28. The communication system of claim 27 wherein said collector processing means processes said received bursts where said received bursts have burst samples, β
    - _rb, where b=1, 2, . . . , B, based upon x-bit channel models where each channel model has taps, t, where t=0, 1, . . . , T, where T=2 X−
      
      1, where there is one channel model for each of said user signals, and where each channel model is an estimate of an actual transmission channel for each of said user signals, respectively, with channel target values ₀CT, ₁CT, . . . , _tCT, . . . ,_TCT.
  - 29. The communication system of claim 28 wherein said collector processor means operates based upon said received bursts and said channel target values and includes,means to generate branch metric values ₀BM_b, ₁BM_b, . . . , _tBM_b, . . . , _TBM_b, means to generate path metric values, ₀PM_b, ₁PM_b, . . . , _tPM_b, . . . , _tPM_b, . . . , _(T+1)/2PM_b, means to generate trace vector values, ₀TV_b, ₁TV_b, . . . ,_tTV_b, . . . , _(T+1)/2TV_b, means to generate confidence metric values, ₀_b, ₁_b, . . . , _t_b, . . . , _(T+1)/2;
    - and means to generate processed burst bits, β
      
      _p1, β
      
      _p2, β
      
      _p3, . . . , β
      
      _pb, . . . , β
      
      _pB.
  - 30. The communication system of claim 29 wherein said collector processing means performs bit-by-bit processing for a current bit, b, for a once previous bit, b−
    - 1, for a twice previous bit, b−
      
      2, and so on up to a (b-(x−
      
      1)) bit for each received burst sample, β
      
      _rb, where b=1, 2, . . . , B, and the channel target values ₀CT, ₁CT, . . . , _tCT, . . . , _TCT, by determining the branch metric difference values, ₀BM_rb, ₁BM_rb, . . . , _TBM_rbas follows;
      
      $\begin{matrix} \overline{(b - 1, b - 2) \dots (b - (x - 1))} & (b) \\ \overline{00 \dots 0} & 0 & {}_{0}{BM}_{b} = {(β_{rb} -_{0} CT)}^{2} \\ \overline{00 \dots 0} & 1 & {}_{1}{BM}_{b} = {(β_{rb} -_{1} CT)}^{2} \\ \overline{00 \dots 1} & 0 & {}_{2}{BM}_{b} = {(β_{rb} -_{2} CT)}^{2} \\ \overline{00 \dots 1} & 1 & {}_{3}{BM}_{b} = {(β_{rb} -_{3} CT)}^{2} \\ ⋮ \\ \overline{11 \dots 0} & 0 & {}_{T - 3}{BM}_{b} = {(β_{rb} -_{T - 3} CT)}^{2} \\ \overline{11 \dots 0} & 1 & {}_{T - 2}{BM}_{b} = {(β_{rb} -_{T - 2} CT)}^{2} \\ \overline{11 \dots 1} & 0 & {}_{T - 1}{BM}_{b} = {(β_{rb} -_{T - 1} CT)}^{2} \\ \overline{11 \dots 1} & 1 & {}_{T}{BM}_{b} = {(β_{rb} -_{T} CT)}^{2} . \end{matrix}$
  - 31. The communication system of claim 27 wherein said collector processing means processes said received bursts having burst bits, ^α
    - β
      
      _rb, where b=1, 2, . . . , B, and α
      
      =1, 2, . . . , N_awhere Na is a number of diversity receivers based upon x-bit channel models where each channel model has taps, t, where t=0, 1, . . . , t, . . . , T, where T=2^X−
      
      1, where there are N_achannel models, one for each of said user signals, and where each channel model is an estimate of an actual transmission channel for each of said user signals, respectively, with channel target values for each of the user signals 1, 2, . . . , α
      
      , . . . , N_aas follows, $\begin{matrix} _{0}^{1} CT,_{1}^{1} CT, \dots,_{t}^{1} CT, \dots,_{T}^{1} CT \\ _{0}^{2} CT,_{1}^{2} CT, \dots,_{t}^{2} CT, \dots,_{T}^{2} CT \\ ⋮ \\ _{0}^{α} CT,_{1}^{α} CT, \dots,_{t}^{α} CT, \dots,_{T}^{α} CT \\ ⋮ \\ _{0}^{Na} CT,_{1}^{Na} CT, \dots,_{t}^{Na} CT, \dots,_{T}^{Na} CT \end{matrix}$ and where the received burst samples are as follows, $\begin{matrix} {}^{1}β_{r1}, {}^{1}β_{r2}, {}^{1}β_{r3}, \dots, {}^{1}β_{rb} \dots, {}^{1}β_{rB} \\ {}^{2}β_{r1}, {}^{2}β_{r2}, {}^{2}β_{r3}, \dots, {}^{2}β_{rb} \dots, {}^{2}β_{rB} \\ ⋮ \\ {}^{α}β_{r1}, {}^{α}β_{r2}, {}^{α}β_{r3}, \dots, {}^{α}β_{rb} \dots, {}^{α}β_{rB} \\ ⋮ \\ {}^{Na}β_{r1}, {}^{Na}β_{r2}, {}^{Na}β_{r3}, \dots, {}^{Na}β_{rb} \dots, {}^{Na}β_{rB} . \end{matrix}$
  - 32. The communication system of claim 31 wherein said collector processing means performs bit-by-bit processing for a current bit, b, for a once previous bit, b−
    - 1, for a twice previous bit, b−
      
      2, and so on up to a (b-(x−
      
      1)) bit for each received burst samples, β
      
      _rb, where b=1, 2, . . . , B, and the channel target values ₀CT, ₁CT, . . . , _tCT, . . . , _TCT, by determining the branch metric difference values, ₀BM_b, ₁BM_rb, . . . , _TBM_rbas follows;
      
      $\begin{matrix} \overline{(b - 1, b - 2) \dots (b - (x - 1))} & (b) \\ \overline{00 \dots 0} & 0 & {}_{0}{BM}_{b} = \sum_{α = 1}^{N_{a}} {({}^{α}β_{rb} -_{0}^{α} CT)}^{2} \\ \overline{00 \dots 0} & 1 & {}_{1}{BM}_{b} = \sum_{α = 1}^{N_{a}} {({}^{α}β_{rb} -_{1}^{α} CT)}^{2} \\ \overline{00 \dots 1} & 0 & {}_{2}{BM}_{b} = \sum_{α = 1}^{N_{a}} {({}^{α}β_{rb} -_{2}^{α} CT)}^{2} \\ \overline{00 \dots 1} & 1 & {}_{3}{BM}_{b} = \sum_{α = 1}^{N_{a}} {({}^{α}β_{rb} -_{3}^{α} CT)}^{2} \\ ⋮ \\ \overline{11 \dots 0} & 0 & {}_{T - 3}{BM}_{b} = \sum_{α = 1}^{N_{a}} {({}^{α}β_{rb} -_{T - 3}^{α} CT)}^{2} \\ \overline{11 \dots 0} & 1 & {}_{T - 2}{BM}_{b} = \sum_{α = 1}^{N_{a}} {({}^{α}β_{rb} -_{T - 2}^{α} CT)}^{2} \\ \overline{11 \dots 1} & 0 & {}_{T - 1}{BM}_{b} = \sum_{α = 1}^{N_{a}} {({}^{α}β_{rb} -_{T - 1}^{α} CT)}^{2} \\ \overline{11 \dots 1} & 1 & {}_{T}{BM}_{b} = \sum_{α = 1}^{N_{a}} {({}^{α}β_{rb} -_{T}^{α} CT)}^{2} \end{matrix}$
  - 33. The communication system of claim 32 wherein N_aequals 2.
  - 34. The communication system of claim 24 wherein said aggregator means combines said confidence metrics from two or more of said micro-diverse collector signals for each of said plurality of users and forms a logical 1 or logical 0 value for each bit of said sequence of data bits based on combined confidence metrics.
  - 35. The communication system of claim 34 wherein said aggregator means receives, from N_cof said collector means, N_cmacro-diverse collector signals each having a confidence metric value, ^α
    - c_bfor each bit and combines said confidence metric values to form an average confidence metric, ^α
      
      ggc_b, as follows;
      
      ${}^{agg}c_{b} = \frac{1}{N_{c}} \sum_{α = 1}^{N_{c}} {}^{α}c_{b} .$
  - 36. The communication system of claim 34 wherein said aggregator means receives, from N_cof said collector means, N_cmacro-diverse collector signals each having a confidence metric value, ^α
    - c_b, for each bit and each having a weighting factor, ^αw_b, for each bit and combines said confidence metric values to form an average confidence metric, ^α
      
      ggc_b,as follows;
      
      ${}^{agg}c_{b} = \frac{1}{N_{c}} \sum_{α = 1}^{N_{c}} {}^{α}w_{b} {}^{α}c_{b} .$
  - 37. The communication system of claim 34 wherein said confidence metric is in the form of a number, c, where (−
    - a)<
      
      c<
      
      (+a) and where a is an amplitude represented by one or more bytes to indicate the range for c.
  - 38. The communication system of claim 24 wherein,said collector processing means includes signal measurement means for providing measurement signals measuring properties of the received user signals, said aggregator means includes measurement processor means receiving said measurement signals for controlling which ones of said collector signals are combined.
  - 39. The communication system of claim 38 wherein said signal measurement means measures power and said measurement signals represent the power of the received user signals.
  - 40. The communication system of claim 24 wherein said aggregator means includes a signal processor having a macro-diversity combiner unit for combining said confidence metrics from two or mom of said macrodiverse collector signals and forms a logical 1 or logical 0 value for each bit of said sequence of data bits based on combined confidence metrics.
  - 41. The communication system of claim 40 wherein said signal processor includes a de-interleaver, a de-convolution unit and a block decoder.
  - 42. The communication system of claim 24 wherein said aggregator means includes an aggregator signal processor having,a plurality of macro-diversity combiner units each for combining said confidence metrics from two or more of said macro-diverse collector signals to form a logical 1 or logical 0 value for each bit of said sequence of data bits based on combined confidence metrics, first selector means for selecting different ones of the macro-diverse collector signals for inputs to different ones of the macro-diversity combiner units, second selector means for selecting one of the outputs from the macro-diversity combiner units to form said final sequence of data bits.
  - 43. The communication system of claim 42 wherein said signal processor includes a macro-diversity combiner, a de-interleaver, a de-convolution unit and a block decoder.
  - 44. The communication system of claim 24 wherein,said collector processing means includes signal measurement means for providing measurement signals measuring properties of the received user signals, said aggregator means includes aggregator signal processor means including, measurement processor means receiving said measurement signals for providing measurement control signals for controlling which ones of said collector signals are combined, a plurality of macro-diversity combiner unit groups each for combining said confidence metrics from two or more of said macro-diverse collector signals to form a logical 1 or logical 0 value for each bit of said sequence of data bits based on said combined confidence metrics, each of said macro-diversity combiner unit groups including a macro-diversity combiner, a de-interleaver, a de-convolution unit and a block decoder for providing data outputs, first selector means responsive to said measurement control signals for selecting different ones of the macro-diverse collector signals for inputs to different ones of the macro-diversity combiner unit groups, second selector means for selecting one of said data outputs as said final sequence of data bits.
  - 45. The communication system of claim 44 wherein said block decoder in each of said macro-diversity combiner unit groups provides a frame erasure signal and said second selector means selects one of said data outputs not associated with a frame erasure signal.
  - 46. The communication system of claim 24 wherein each of said collector means further includes control means for providing a collector time stamp associated with said collector signals.
  - 47. The communication system of claim 46 wherein said aggregator means includes means for aligning collector signals from different ones of said collector means based on the time stamp received from each of said collector means.

48. A communication system having a plurality of forward channel communications and a plurality of corresponding reverse channel communications comprising,a plurality of users in a broadcaster zone, each of said users including user receiver means for receiving different user forward channel signals and including user transmitter means for broadcasting user reverse channel signals in a user reverse channel, said plurality of users providing a composite signal formed of a plurality of different user reverse channels, a plurality of macro-diverse collector means distributed in proximity to said broadcaster zone at macro-diverse locations, each of said collector means including, collector receiver means including a plurality of micro-diversity receivers each for receiving said user signals and providing a plurality of micro-diverse received signals for each of said plurality of users, collector processing means for processing said micro-diverse received signals to form collector signals including sequences of data bits representing the micro-diverse received signals and including confidence metrics corresponding to said data bits for each of said plurality of users, broadcaster means including a broadcaster transmitter for broadcasting said plurality of user forward channel signals over a broadcaster range to said users in said broadcaster zone, control means for selecting ones of said plurality of collector means in a collector group for receiving reverse channel signals from particular ones of said plurality of users, aggregator means for combining said collector signals from said plurality of macro-diverse collector means in said collector group for each of said particular ones of said plurality of users to form a final sequence of data bits representing the user signals for each of said particular ones of said plurality of users.
- View Dependent Claims (49, 50, 51, 52)
- - 49. The communication system of claim 48 wherein said collector processing means includes a multi-sensor equalizer micro-combiner for processing said micro-diverse received signals.
  - 50. The communication system of claim 48 wherein said collector processing means includes a micro-combiner having a plurality of single-sensor equalizers, one for each of said micro-diverse received signals, and a stage combiner for combining outputs from each of said single-sensor equalizers to form said collector signals.
  - 51. The communication system of claim 48 further including a master time transmitter for transmitting a time synchronization signal and wherein each of said collector means further includes time control means responsive to said time synchronization signal for providing a collector time stamp associated with said collector signals.
  - 52. The communication system of claim 51 wherein said aggregator means includes means for aligning collector signals from different ones of said collector means based on the time stamp received from each of said collector means.

53. A communication system having a plurality of forward channel communications and a plurality of corresponding reverse channel communications comprising,a plurality of users in a plurality of broadcaster zones, each of said users including user receiver means for receiving different user forward channel signals and including user transmitter means for broad- casting user reverse channel signals in a user reverse channel, said plurality of users providing a composite signal formed of a plurality of different user reverse channels, a number, N_bm, of broadcaster means, each including a broadcaster transmitter for broadcasting said plurality of user forward channel signals over a broadcaster range to said users in one of said broadcaster zones, a number, N_c, of collector means distributed in proximity to said broadcaster zones at macro-diverse locations where the number N_c, of collector means is greater than the number, N_bm, of broadcaster means, each of said collector means including, collector receiver means including a plurality of micro-diversity receivers each for receiving said composite signal and providing a plurality of micro-diverse received signals for each of ones of said plurality of users, collector processing means for processing said micro-diverse received signals to form collector signals including sequences of data bits representing the micro-diverse received signals and including confidence metrics corresponding to said data bits for each of said ones of said plurality of users, collector forwarding means for forwarding said sequences of data bits and said confidence metrics as collector signals for each of said ones of said plurality of users, aggregator means for combining said macro-diverse collector signals for said each one of particular ones of the users from said collector means in said collector group to form a final sequence of data bits representing the user signals for said each one of particular ones of the users.
- View Dependent Claims (54, 55, 56, 57, 58)
- - 54. The communication system of claim 53 including control means for selecting ones of said plurality of collector means in a collector group for receiving reverse channel signals from particular ones of said plurality of users and wherein said aggregator means combines said collector signals from said plurality of macro-diverse collector means in said collector group for each of said particular ones of said plurality of users.
  - 55. The communication system of claim 53 wherein said collector processing means includes a multi-sensor equalizer micro-combiner for processing said micro-diverse received signals.
  - 56. The communication system of claim 53 wherein said collector processing means includes a micro-combiner having a plurality of single-sensor equalizers, one for each of said micro-diverse received signals, and a stage combiner for combining outputs from each of said single-sensor equalizers to form said collector signals.
  - 57. The communication system of claim 53 further including a master time transmitter for transmitting a time synchronization signal and wherein each of said collector means further includes time control means responsive to said time synchronization signal for providing a collector time stamp associated with said collector signals.
  - 58. The communication system of claim 57 wherein said aggregator means includes means for aligning collector signals from different ones of said collector means based on the time stamp received from each of said collector means.

63. A communication system having a plurality of forward channel communications and a plurality of corresponding reverse channel communications comprising,a plurality of users in one or more broadcaster zones, each of said users including user receiver means for receiving different user forward channel signals and including user transmitter means for broadcasting user reverse channel signals in a user reverse channel, said plurality of users providing a composite signal formed of a plurality of different user reverse channels, a plurality of macro-diverse collector means distributed in proximity to said broadcaster zones at macro-diverse locations, each of said collector means including, collector receiver means including a plurality of micro-iversity receivers each for receiving said user signals and providing a plurality of micro-diverse received signals for each of said plurality of users, collector processing means for processing said micro-diverse received signals to form collector signals including sequences of data bits representing the micro-diverse received signals and including confidence metrics corresponding to said data bits for each of said plurality of users, a plurality of zone manager means, each including, broadcaster means including a broadcaster transmitter for broadcasting said plurality of user forward channel signals over a broadcaster range to said users in said one or more broadcaster zones, aggregator means for combining said collector signals from said plurality of macro-diverse collector means for each of said plurality of users to form a final sequence of data bits representing the user signals for each of said plurality of users.
- View Dependent Claims (64, 65, 66)
- - 64. The communication system of claim 63 including means for interconnecting said zone manager means.
  - 65. The communication system of claim 64 including control means for controlling the selection of collector means and the broadcaster means for said plurality of users.
  - 66. The communication system of claim 64 wherein said means for interconnecting said zone manager means is a region manager.

Specification

Resources

Litigation Campaign Assessment

Current Assignee
Hanger Solutions, LLC (IP Investments Group LLC)
Original Assignee
Mdiversity Incorporated
Inventors
Walters, Andrew John, Wallerius, John Walker, Vastano, John Andrew
Primary Examiner(s)
Patel, Ajit

Application Number

US08/801,711
Time in Patent Office

1,467 Days
Field of Search

370/328, 370/332, 370/337, 370/329, 370/341, 370/347, 370/431, 370/333, 370/334, 455/132-141, 455/422, 455/509, 455/517, 455/519
US Class Current

370/328
CPC Class Codes

H04B 7/022   Site diversity; Macro-diver...

H04B 7/0491   using two or more sectors, ...

H04B 7/084   Equal gain combining, only ...

H04L 25/067   providing soft decisions, i...

H04W 16/00   Network planning, e.g. cove...

H04W 88/085   Access point devices with r...

Method and apparatus for wireless communication employing aggregation for digital signals

First Claim

14 Assignments

0 Petitions

Accused Products

Abstract

Citations

66 Claims

Specification

Solutions

Use Cases

Quick Links

Method and apparatus for wireless communication employing aggregation for digital signals

First Claim

14 Assignments

Subscription Required

Subscription Required

0 Petitions

Subscription Required

Accused Products

Subscription Required

Abstract

Citations

66 Claims

Specification

Subscription Required

Solutions

Use Cases

Quick Links