Qualifying available reverse link coding rates from access channel power setting

• US 8,811,367 B2
• Filed: 12/06/2005
• Issued: 08/19/2014
• Est. Priority Date: 02/23/2001
• Status: Expired due to Term

• Current Assignee: IPR Licensing Incorporated (InterDigital, Inc.)
• Original Assignee: IPR Licensing Incorporated (InterDigital, Inc.)
• Inventors: Nelson, George Rodney Jr., Proctor, James A. Jr., Hoffmann, John E., Rouphael, Antoine J.
• Primary Examiner(s): Lai, Andrew
• Assistant Examiner(s): LEE, ANDREW CHUNG CHEUNG
• Application Number:
  US11/295,270
• Publication Number:
  US 20060088021A1
• Time in Patent Office: 3,178 Days
• Field of Search: 370/342, 370/468, 370/310, 370/315, 370/316, 370/320, 370/328, 370/329, 370/335, 455/63.1, 455/67.11, 455/68, 455/69, 455/507, 455/517, 455/525
• US Class Current: 370/342
• CPC Class Codes: H04J 13/00 Code division multiplex systems for frequency hopping H04B1/713
• CPC Class Codes: H04J 13/0003 Code application, i.e. aspects relating to how codes are applied to form multiplexed channels
• CPC Class Codes: H04L 5/22 using time-division multiplexing
• CPC Class Codes: H04W 24/00 Supervisory, monitoring or testing arrangements
• CPC Class Codes: H04W 28/22 Negotiating communication rate
• CPC Class Codes: H04W 48/08 Access restriction or access information delivery, e.g. discovery data delivery signalling during connection H04W76/00
• CPC Class Codes: H04W 52/24 using SIR [Signal to Interference Ratio] or other wireless path parameters
• CPC Class Codes: H04W 52/26 using transmission rate or quality of service QoS [Quality of Service]
• CPC Class Codes: H04W 52/365 Power headroom reporting
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/0466 the resource being a scrambling code
• CPC Class Codes: H04W 72/0473 the resource being transmission power
• CPC Class Codes: H04W 72/20 Control channels or signalling for resource management
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 72/51 based on terminal or device properties
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

Data rate allocation decisions are made for a communications channel. A message is sent on a communication channel such as on a paging channel. The message indicates a forward Effective Radiate Power (ERP) of a pilot signal transmitted. The remote station then determines the received signal strength of this pilot signal, taking into account receiver gains. The path loss may be estimated as the difference between the forward ERP data value received and the detected received pilot power. This transmit power level information is encoded as a digital data word together with the forward path loss information. Upon transmission, the forward path loss estimate as calculated and the output power value can then help determine the amount of excess power available. This is indicative of the amount of dynamic range available in the transmit power amplifier. Coding rates which require a higher dynamic range may be acceptable for use.

Claims

1. A field unit comprising:

an antenna; and

circuitry configured to transmit, to a base station, an indication of an amount of excess power that the field unit is capable of using to support an additional bandwidth allocation, to receive, from the base station, an allocation of additional bandwidth in response to the transmitted indication, and to transmit, to the base station, uplink data over allocated bandwidth in response to the allocation of additional bandwidth.

2. The field unit of claim 1, wherein the indication of an amount of excess power is derived at least from an amplifier output power of the field unit.

3. The field unit of claim 1, wherein the circuitry is further configured to determine a pathloss between the field unit and the base station, wherein the transmission of the indication is in response to the determined pathloss.

4. The field unit of claim 1, wherein the circuitry is further configured to segment data packets into segments, produce dynamically sized blocks derived from data of the segments, encode the produced dynamically sized blocks, and produce modulation symbols from the encoded blocks.

5. The field unit of claim 4, wherein the modulation symbols are quadrature amplitude modulation (QAM) symbols.

6. A method for use in a field unit, comprising:

transmitting, to a base station, an indication of an amount of excess power that the field unit is capable of using to support an additional bandwidth allocation;

receiving, from the base station, an allocation of additional bandwidth in response to the indication; and

transmitting uplink data over allocated bandwidth in response to the allocation of additional bandwidth.

7. The method of claim 6, wherein the indication of an amount of excess power is derived at least from an amplifier output power of the field unit.

8. The method of claim 6, further comprising:

determining a pathloss between the field unit and the base station, wherein the indication is transmitted in response to the determined pathloss.

9. The method of claim 6, further comprising:

segmenting data packets into segments;

producing dynamically sized blocks derived from data of the segments;

encoding the produced dynamically sized blocks; and

producing modulation symbols from the encoded blocks.

10. The method of claim 9, wherein the modulation symbols are quadrature amplitude modulation (QAM) symbols.

11. A base station comprising:

an antenna; and

circuitry configured to receive, from a field unit, an indication of an amount of excess power that the field unit is capable of using to support an additional bandwidth allocation, to transmit, to the field unit, an allocation of additional bandwidth to the field unit in response to the indication, and to receive uplink data over allocated bandwidth in response to the allocation of additional bandwidth.

12. The base station of claim 11, wherein the indication of an amount of excess power is derived at least from an amplifier output power of the field unit.