CONSTRAINED HOPPING IN WIRELESS COMMUNICATION SYSTEMS

• US 20140050249A1
• Filed: 10/28/2013
• Published: 02/20/2014
• Est. Priority Date: 12/22/2004
• Status: Abandoned Application

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Khandekar, Aamod, Agrawal, Avneesh
• Application Number:
  US14/064,482
• Publication Number:
  US 20140050249A1
• Time in Patent Office: Days
• US Class Current: 375/132
• CPC Class Codes: H04B 1/713 using frequency hopping
• CPC Class Codes: H04B 7/024 Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
• CPC Class Codes: H04B 7/0413 MIMO systems
• CPC Class Codes: H04L 1/0029 Reduction of the amount of signalling, e.g. retention of useful signalling or differential signalling power control H04W52/04
• CPC Class Codes: H04L 25/0204 of multiple channels
• CPC Class Codes: H04L 25/0226 sounding signals per se
• CPC Class Codes: H04L 25/0232 by interpolation between sounding signals
• CPC Class Codes: H04L 5/0023 Time-frequency-space
• CPC Class Codes: H04L 5/0039 Frequency-contiguous, i.e. with no allocation of frequencies for one user or terminal between the frequencies allocated to another
• CPC Class Codes: H04L 5/0044 allocation of payload
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• CPC Class Codes: H04L 5/006 Quality of the received signal, e.g. BER, SNR, water filling
• CPC Class Codes: H04L 5/0094 Indication of how sub-channels of the path are allocated

Abstract

Embodiments described provide for resource allocation for a transmission to a wireless device. The frequency band is partitioned into at least two contiguous subbands. A determination is made whether it is desirable to transmit in a single subband or in more than one subband. The transmission is assigned to occur in either the single subband or to operate in more than one subband. If the transmission is restricted to one subband, the hop pattern is also restricted to subcarriers within the particular subband.

Claims

1. In a wireless communication system operating in a given frequency band, a method of resource allocation for a transmission for a wireless device, the method comprising:

determining whether it is desirable for a transmission to a user to be in a single subband or in more than one subband;

wherein each subband includes non-overlapping subcarriers with respect to any other subband;

assigning the transmission to occur in either the single subband or to operate in more than one subband based upon the determination.

2. The method set forth in claim 1, further comprising assigning additional pilot signals in the single subband.

3. The method set forth in claim 1, wherein determining further comprises determining whether the wireless transmission is a MIMO transmission.

4. The method set forth in claim 1, wherein determining further comprises determining whether the transmission is a latency-sensitive transmission.

5. The method set forth in claim 1, further comprising utilizing the additional pilot signals for a MIMO transmission.

6. The method set forth in claim 1, further comprising receiving a channel quality indicator indicative of channel quality of each subband observed by a wireless device.

7. The method set forth in claim 1, further comprising receiving a channel quality indicator indicative of channel quality of the last subband observed by a wireless device.

8. The method set forth in claim 1, further comprising receiving a channel quality indicator indicative of channel quality of the best subband observed by a wireless device.

9. The method set forth in claim 1, further comprising restricting a hop pattern to subcarriers within a particular subband.

10. An apparatus comprising:

means for determining whether it is desirable for the transmission to be in a single subband or in more than one subband; and

means for assigning the transmission to occur in either the single subband or to operate in more than one subband.

11. The apparatus set forth in claim 10, further comprising means for assigning additional pilot signals in the single subband.

12. The apparatus set forth in claim 11, wherein the means for determining further comprises means for determining whether the wireless transmission is a MIMO transmission.

13. The apparatus set forth in claim 11, wherein the means for determining further comprises means for determining whether the transmission is a latency-sensitive transmission.

14. The apparatus set forth in claim 11, further comprising means for utilizing the additional pilot signals for a MIMO transmission.

15. The apparatus set forth in claim 11, further comprising means for receiving a channel quality indicator indicative of channel quality of each subband observed by a wireless device.

16. The apparatus set forth in claim 11 further comprising means for receiving a channel quality indicator indicative of channel quality of the last subband observed by a wireless device.

17. The apparatus set forth in claim 11, further comprising means for receiving a channel quality indicator indicative of channel quality of the best subband observed by a wireless device.

18. The apparatus set forth in claim 11, further comprising means for restricting a hop pattern to subcarriers within a particular subband.