Apparatus and methods for communication resource allocation

Abstract

Methods and corresponding systems for determining a transmit power in a mobile device include receiving, in the mobile device, a cell-wide power control parameter related to a target receive power at a serving base station. Thereafter, a transmit power is calculated in response to the cell-wide power control parameter and an implicit mobile-specific power control parameter. The mobile device then transmits using the transmit power. The cell-wide power control parameter can be a cell target signal to interference-plus-noise ratio, or a fractional power control exponent. The implicit mobile-specific power control parameter can be a modulation and coding level previously used by the mobile device, or a downlink SINR level measured by the mobile device.

1 - 25 . (canceled) 
     
     
         26 . A method for controlling transmit power for a mobile device, the method comprising:
 determining at the mobile device a first resource budget associated with a data transmission by the mobile device;   determining at the mobile device that a parameter related to the first resource budget exceeds a reporting threshold; and   based at least in part on determining that the parameter related to the first resource budget exceeds the reporting threshold, sending a request from the mobile device to a network entity, the request comprising data associated with the first resource budget.   
     
     
         27 . The method of  claim 26 , wherein determining the first resource budget comprises determining a transmission power level available to the mobile device for use in the data transmission. 
     
     
         28 . The method of  claim 26 , wherein determining the first resource budget comprises determining a number of resource blocks available to the mobile device for use in the data transmission. 
     
     
         29 . The method of  claim 26 , wherein the parameter related to the first resource budget comprises information related to a power headroom limitation, the power headroom comprising a difference between (i) a power level received by the mobile device from the entity, and (ii) a maximum power level attainable by the mobile device. 
     
     
         30 . The method of  claim 26 , wherein determining whether the parameter related to the first resource budget exceeds the reporting threshold comprises determining whether a resource block capacity limitation exceeds the reporting threshold. 
     
     
         31 . The method of  claim 26 , wherein sending of the request is effected via at least a random access channel (RACH) request. 
     
     
         32 . The method of  claim 26 , wherein sending of the request is effected via a synchronized random access channel (RACH) request. 
     
     
         33 . A method for controlling power during data transmission by a mobile device, comprising:
 sending a first resource allocation request from the mobile device to a network entity; and   receiving from the network entity a resource allocation grant having a first time duration associated therewith, the grant comprising a first power control instruction configured to be used by the mobile device during the first time duration.   
     
     
         34 . The method of  claim 33 , wherein the resource allocation grant is dynamic, and further comprises:
 a first allocation; and   an indication for the mobile device to use dynamically allocated transmit power.   
     
     
         35 . The method of  claim 34 , wherein:
 the mobile device is characterized by a transmission power capability; and   the first allocation is consistent with the transmission power capability.   
     
     
         36 . The method of  claim 35 , wherein:
 the first allocation comprises a first number of resource blocks;   the transmission power capability is characterized by a resource block limit;   the first number of resource blocks exceeds the resource block limit; and   the data transmission is effected consistent with the transmission power capability.   
     
     
         37 . The method of  claim 33 , wherein the first power control instruction comprises a mobile-specific power control parameter configured to be received exclusively by the mobile device, the mobile-specific power control parameter being related to a target reception power at the entity. 
     
     
         38 . The method of  claim 33 , further comprising:
 sending a second resource allocation request from the mobile device to the entity;   receiving from the entity a persistent resource allocation grant comprising a second power control instruction, the persistent resource allocation grant having a second time duration associated therewith; and   subsequent to receiving the persistent resource allocation grant, receiving from the entity at least one additional power control instruction during the second duration;   wherein:
 the second instruction enables the device to perform an initial allocation of transmit power of the mobile device during the second duration; 
 the least one additional power control instruction enables the device to perform at least one subsequent allocation of transmit power of the mobile device during the second duration; and 
 the second duration is greater than the first duration. 
   
     
     
         39 . The method of  claim 38 , wherein the at least one additional power control instruction causes the mobile device to perform at least one of (i) increment transmit power; and (ii) decrement transmit power. 
     
     
         40 . The method of  claim 38 , wherein the second control instruction comprises a mobile-specific power control parameter configured to be received exclusively by the mobile device, the mobile-specific power control parameter being related to a target receive power at the entity. 
     
     
         41 . The method of  claim 38 , wherein:
 the at least one additional power control instruction comprises a plurality of additional power control instructions, each additional power control instruction of the plurality of additional power control instructions being configured to cause adjustment of the transmit power of the mobile device by a predetermined value; and   the additional power control instructions of the plurality of additional power control instructions, when implemented, cooperate to cause an accumulated transmit power adjustment.   
     
     
         42 . The method of  claim 33 , wherein the first power control instruction comprises a one-time use instruction configured to be used by the mobile device once during the first time duration. 
     
     
         43 . A method for determining a transmit power comprising:
 receiving by a mobile device a cell-wide power control parameter related to a target receive power at a serving base station;   determining, by the mobile device, a transmit power based at least in part on the cell-wide power control parameter and an implicit mobile-specific power control parameter; and   transmitting using the determined transmit power.   
     
     
         44 . The method of  claim 43 , further comprising receiving a mobile-specific power control parameter from the serving base station;
 wherein the transmit power is calculated based at least in part on the cell-wide power control parameter, the implicit mobile-specific power control parameter, and the mobile-specific power control parameter.   
     
     
         45 . The method of  claim 44 , wherein the mobile-specific power control parameter is configured to be received exclusively by the mobile device, the mobile-specific power control parameter being related to the target receive power. 
     
     
         46 . The method of  claim 45 , wherein the cell-wide power control parameter comprises a fractional power control exponent. 
     
     
         47 . The method of  claim 46 , further comprising:
 sending a resource allocation request from the mobile device to the serving base station;   receiving from the serving base station a persistent resource allocation grant comprising a power control instruction, the persistent resource allocation grant having a time duration associated therewith; and   subsequent to receiving the persistent resource allocation grant, receiving from the serving base station at least one additional power control instruction during the time duration;   wherein:
 the power control instruction is configured to cause the device to perform an initial allocation of transmit power of the mobile device during the time duration; and 
 the least one additional power control instruction configured to cause the device to perform at least one subsequent allocation of transmit power of the mobile device during the time duration. 
   
     
     
         48 . The method of  claim 47 , wherein:
 the at least one additional power control instruction comprises a plurality of additional power control instructions, each additional power control instruction of the plurality of additional power control instructions configured to cause adjustment of the transmit power of the mobile device by a predetermined value; and   the additional power control instructions of the plurality of additional power control instructions, when implemented, cooperate to cause an accumulated transmit power adjustment.   
     
     
         49 . The method of  claim 43 , wherein the implicit mobile-specific power control parameter is determined based at least in part on the cell-wide power control parameter and a modulation and coding level received by the mobile device. 
     
     
         50 . The method of  claim 49 , wherein the modulation and coding level is received by the mobile device as a part of a grant comprising the cell-wide power control parameter. 
     
     
         51 . The method of  claim 49 , wherein the modulation and coding level is received by the mobile device prior to the receiving the cell-wide power control parameter. 
     
     
         52 . The method of  claim 49 , wherein the implicit mobile-specific power control parameter is determined based at least in part on a correlation between the mobile-specific power control parameter and the modulation and coding level.