PATENT DOCUMENT

Publication Number: US-9398545-B2
Application Number: US-201414292008-A
Country: US
Kind Code: B2

Title: Device and method for setting a target power

Abstract:
A method, station and computer readable storage medium used for setting a power level of the station. The station implements a first processing layer that is a radio link control layer and a second processing layer that is a physical layer. The method includes receiving data units of a voice application, the data units being in a sequence, determining whether the first processing layer of the station detects a gap in the sequence of received data units, communicating an indication from the first processing layer to the second processing layer, the indication indicating at least one identity of corresponding missing data units in the gap relative to the first processing layer and increasing the current power level when the at least one identity of the corresponding missing data units relative to the first processing layer is also determined to be a missing data unit relative to the second processing layer.

Claims:
What is claimed is: 
     
       1. A method comprising:
 at a station that includes circuitry that implements a first processing layer and a second processing layer, wherein the first processing layer is a radio link control (RLC) layer and the second processing layer is a physical layer:
 receiving data units of a voice application from a network at a current power level set for the station, the data units being in a sequence with a position in the sequence being indicated in each data unit; 
 determining whether the first processing layer of the station detects a gap in the sequence of received data units; 
 communicating an indication from the first processing layer to the second processing layer, the indication indicating at least one identity of corresponding missing data units in the gap relative to the first processing layer; and 
 increasing the current power level when the at least one identity of the corresponding missing data units relative to the first processing layer is also determined to be a missing data unit relative to the second processing layer. 
 
 
     
     
       2. The method of  claim 1 , wherein the data units are first received by the second processing layer that transfers a portion of the data units to the first processing layer. 
     
     
       3. The method of  claim 1 , wherein an amount of the increase to the current power level is based on a number of missing data units relative to the first and second processing layer. 
     
     
       4. The method of  claim 1 , wherein the second processing layer determines that one of the at least one identity of the corresponding missing data units relative to the first processing layer is not a missing data unit relative to the second processing layer. 
     
     
       5. The method of  claim 1 , wherein the current power level is prevented from increasing beyond a predetermined maximum power level. 
     
     
       6. The method of  claim 5 , wherein the current power level is increased to the predetermined maximum power level when the predetermined maximum power level becomes determined to be exceeded. 
     
     
       7. The method of  claim 1 , wherein the current power level is increased incrementally based upon a predetermined incremental value and a number of missing data units relative to the second processing layer. 
     
     
       8. The method of  claim 7 , wherein the predetermined incremental value is between 0.5 and 1.0 dB. 
     
     
       9. The method of  claim 7 , wherein the current power level is increased incrementally further based upon a consecutive number of missing data units relative to the second processing layer. 
     
     
       10. The method of  claim 1 , wherein the voice application is a Wideband Code Division Multiple Access (WCDMA) voice call, the data units are signals using a transport format of 0x148 and 1x148 for voice frames configured with Blind Transport Format Detection (BTFD). 
     
     
       11. A station, comprising:
 a transceiver configured to receive communications from an access network; and 
 a processor configured to set a target power for the station by:
 receiving a plurality of data units that include an indication of a position of each data unit within a sequence; 
 determining whether the received plurality of data units include a gap in the sequence, wherein whether the received plurality of data units include the gap is determined by:
 decoding the plurality data units at a first networking processing layer; 
 determining an identity of missing data units in the gaps; and 
 communicating an indication to a second networking processing layer, wherein the indication includes the identity of the missing data units; and 
 
 increasing a current power level of the station when a gap in the sequence is determined. 
 
 
     
     
       12. The station of  claim 11 , wherein increasing the current power level by the processor includes:
 determining a new power level of the station; and 
 increasing the current power level to the new power level when the new power level is less than or equal to a predetermined maximum power level of the station and increasing the current power level to the predetermined maximum power level when the new power level is greater than the predetermined maximum power level of the station. 
 
     
     
       13. The station of  claim 11 , wherein increasing the current power level by the processor includes:
 determining a new power level of the station as a function of one of a predetermined step value increase in power or a number of data units in the gap in the sequence. 
 
     
     
       14. The station of  claim 11 , wherein the processor determines whether the received plurality of data units include the gap by:
 determining whether the second networking processing layer has received the data units identified in the indication, wherein the gap is determined when the second networking processing layer has not received the data units. 
 
     
     
       15. The station of  claim 14 , wherein the second networking processing layer has determined the data units identified in the indication have been received in a corrupted state. 
     
     
       16. The station of  claim 11 , wherein the processor is configured to set a target power for the station by:
 forwarding the data units from the second networking processing layer to the first networking processing layer, wherein the second networking processing layer processes a first portion of the data units prior to forwarding the data units and forwards a second portion of the data units without processing. 
 
     
     
       17. The station of  claim 11 , wherein the data units are Protocol Data Units (PDUs) of a Wideband Code Division Multiple Access (WCDMA) voice call. 
     
     
       18. A non-transitory computer readable storage medium with an executable program stored thereon, wherein the program instructs a microprocessor to perform operations comprising:
 receiving data units of a voice application from a network at a current power level set for a station, the data units being in a sequence with a position in the sequence being indicated in each data unit; 
 determining whether a first processing layer of the station detects a gap in the sequence of received data units; 
 communicating an indication from the first processing layer to a second processing layer of the station, the indication indicating at least one identity of corresponding missing data units in the gap relative to the first processing layer; and 
 increasing the current power level when the at least one identity of the corresponding missing data units relative to the first processing layer is also determined to be a missing data unit relative to the second processing layer. 
 
     
     
       19. The non-transitory computer readable storage medium of  claim 18 , wherein the first processing layer is a radio link control layer and the second processing layer is a physical layer.

Description:
BACKGROUND INFORMATION 
     A station may establish a connection to a communications network to perform a variety of different functionalities. One such functionality is a voice call in which a first station and a second station may communicate with each other via the network using voice data. A particular implementation of performing the voice call is Wideband Code Division Multiple Access (WCDMA), which is a standard, defined under 3G mobile telecommunications networks such as Universal Mobile Telecommunications System (UMTS). The WCDMA standard uses a Direct Sequence-Code Division Multiple Access (DS-CDMA) channel access method utilizing a 5 MHz channel for both voice and data to achieve the transmission speeds thereof. The WCDMA standard also supports both a Frequency Division Duplex (FDD) and Time Division Duplex (TDD) method. 
     When a network uses WCDMA, voice frames may be transmitted between the two stations. The voice frames may be configured for transmission using a variety of different protocols. For example, a Blind Transport Format Detection (BTFD) may be used for the voice frames. The network that utilizes the BTFD method may use Transport Formats (TF) of 0x148 and 1x148 for signaling of the voice frames. The 0x148 TF may be a 0-rate TF while the 1x148 TF may be a full-rate TF. As such, the 0x148 TF may not have Cyclic Redundancy Check (CRC) bits attached while the 1x148 TF may have the CRC bits attached. The station may receive these 0x148 and 1x148 TFs from the network to subsequently receive the voice frames. However, it may be difficult for an outer loop power control to detect an error in the CRC bits of the 1x148 TF to adjust a target power to receive subsequent signaling frames. For example, the outer loop power control may not be capable of differentiating between a missed transmission and a control transmission (e.g., a Discontinuous Reception (DRX)/Discontinuous Transmission (DTX) when the network is a Long Term Evolution (LTE) network). 
     Accordingly, the outer loop power control of the station may not adjust or increase the power despite more power being required to compensate for the missed transmissions. This may result in various drawbacks such as dropped voice packets during the WCDMA voice call that ultimately lead to a bad user experience. Furthermore, the outer loop power control of the station may inadvertently adjust or increase the power despite a lower power that is already in use and is fully sufficient for the transmissions. This may also result in various drawbacks such as increased power consumption, particularly when the station relies upon a portable power supply that is limited. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  shows an exemplary simplified network arrangement in which a station performs a communication functionality with a further station. 
         FIG. 2  shows components of an exemplary station configured to set a target power. 
         FIG. 3A  shows a first exemplary signaling diagram for setting a target power for a first set of signaling frames. 
         FIG. 3B  shows a second exemplary signaling diagram for setting a target power for a second set of signaling frames. 
         FIG. 4  shows an exemplary method for setting a target power. 
     
    
    
     DETAILED DESCRIPTION 
     The exemplary embodiments describe a method performed by a station that includes circuitry that implements a first processing layer and a second processing layer, wherein the first processing layer is a radio link control (RLC) layer and the second processing layer is a physical layer. The method includes receiving data units of a voice application from a network at a current power level set for the station, the data units being in a sequence with a position in the sequence being indicated in each data unit, determining whether the first processing layer of the station detects a gap in the sequence of received data units, communicating an indication from the first processing layer to the second processing layer, the indication indicating at least one identity of corresponding missing data units in the gap relative to the first processing layer and increasing the current power level when the at least one identity of the corresponding missing data units relative to the first processing layer is also determined to be a missing data unit relative to the second processing layer 
     The exemplary embodiments further describe a station including a transceiver configured to receive communications from an access network and a processor configured to set a target power for the station by receiving a plurality of data units that include an indication of a position of each data unit within a sequence, determining whether the received plurality of data units include a gap in the sequence, increasing a current power level of the station when a gap in the sequence is determined. 
     The exemplary embodiments also describe a non-transitory computer readable storage medium with an executable program stored thereon. The program instructs a microprocessor to perform operations comprising receiving data units of a voice application from a network at a current power level set for a station, the data units being in a sequence with a position in the sequence being indicated in each data unit, determining whether a first processing layer of the station detects a gap in the sequence of received data units, communicating an indication from the first processing layer to a second processing layer of the station, the indication indicating at least one identity of corresponding missing data units in the gap relative to the first processing layer and increasing the current power level when the at least one identity of the corresponding missing data units relative to the first processing layer is also determined to be a missing data unit relative to the second processing layer. 
     The exemplary embodiments may be further understood with reference to the following description and the related appended drawings, wherein like elements are provided with the same reference numerals. The exemplary embodiments are related to a station and method for setting a target power to receive signaling frames from a network associated with a communication functionality between the station and a further station. Specifically, the station may have established a connection with the further station via the network and the signaling frames are used to prepare for transmission of voice data between the stations. The station properly sets the target power by maintaining a current power level or increasing the current power level by a predetermined amount up to a preset maximum based upon information transmitted between a physical layer (PHY) and a radio link control (RLC) of the station. 
       FIG. 1  shows an exemplary simplified network arrangement  100  in which a first station  115  performs communication functionality with a second station  125 . The network arrangement  100  may include an access network  105  that enables the stations  115 ,  125  to establish a connection therebetween for the communication functionality to be performed. The access network  105  may be any type of network such as a cellular network, a WiFi network, etc. Those skilled in the art will understand that access network may include any number of components that are used to accomplish the communications between devices and the access network  105  may include some or all of these components. The access network  105  may also represent any number of networks that may be interconnected with one another. For example, the access network  105  may include a first network for the station  115  and a second network for the station  125  in which the first network may communicate with the second network. The station  115  may connect to the access network  105  by associating with a base station  110  while the station  125  may connect to the access network  105  by associating with a base station  120 . The manner of setting up the communication between the stations  115  and  125  via the access network  105  is not described herein because the communication setup procedures are generally well known and are not critical for the exemplary embodiments. It is sufficient to understand that there are communications that may be received by either of the stations  115  or  125 . 
     In the exemplary embodiments, it will be described that the communication is a WCDMA voice call between the stations  115  and  125 . However, it is not required that the WCDMA voice call be between two wireless stations. For example, the voice call may be between the station  115  and a wired device such as a VoIP phone or a phone connected to the PSTN. Those skilled in the art will understand that there are standard manners for the access network  105  to connect to other networks to handle such voice calls. In another example, the communications are not limited to WCDMA or even voice calls. The exemplary embodiments may be applied to any packet-based communications that include at least some packets that do not have bits for checking an order or an integrity of the packets. In the exemplary embodiments, it will be described that some of the packets do not have CRC bits, but again, it is not required that the packets be missing CRC bits, but just that the exact order or integrity of the packets may not be able to be determined. 
       FIG. 2  shows components of the station  115  that is configured to set a target power. As will be described in further detail below, the station  115  may use a feedback system to determine how to set the target power. The station  115  may represent any electronic device configured to perform the communication functionality and set the target power. For example, the station  115  may be a portable device (e.g., a cellular phone, a smartphone, a tablet, a phablet, a laptop, etc.) or a stationary device (e.g., desktop terminal). The station  115  may include a processor  205 , a baseband processor  210 , a memory arrangement  215 , a display device  2220 , an input/output (I/O) device  225 , a transceiver  230 , and other components  235  such as a portable power supply, an audio I/O device, etc. The station  125  may also include the components described herein for the station  115 . 
     The processor  205  may be configured to execute a plurality of applications of the station  200 . For example, the applications may include a web browser when connected to the access network  105 . Similarly, the processor  205  and/or the baseband processor  210 , in conjunction with the transceiver  230 , may include an association application that establishes a connection between the access network  105  and the station  115 . In yet another example, the applications may include a communication application  240  that enables data to be transmitted with the station  125  once a connection has been established therewith. The communication application  240  will be described in further detail below. In a further example and according to the exemplary embodiments, the applications may include a power control application  245 . The power control application  245  may provide the feedback system to determine whether an adjustment to the power level being used for the communication application  240  is to be performed. The power control application  240  will be described in further detail below. 
     It should be noted that the above noted applications each being an application (e.g., a program) executed by the processor  205  is only exemplary. The baseband processor  210  may also execute the applications. In another example, the functionality described herein for the applications  235  and  240  may be included as a separate incorporated component of the station  115  (e.g., an integrated circuit that may or may not execute firmware) or may be a modular component coupled to the station  115 . 
     The memory arrangement  215  may be a hardware component configured to store data related to operations performed by the station  115 . For example, the memory arrangement  215  may store information used during transmissions associated with the communication application  240 . The memory arrangement  215  may also store settings and adjustment information to be used by the power control application  245 . The display device  220  may be a hardware component configured to show data to a user while I/O device  225  may be a hardware component configured to receive inputs from the user and output corresponding data such as a hostname request. The transceiver  230  may enable the station  115  to communicate with the access network  105  as well as with the station  125 . As a transceiving unit, the transceiver  230  may include a receiver and a transmitter for the respective functionalities to be performed. The other components  235  may include a portable power supply (e.g., battery), a data acquisition device, ports to electrically connect the remote station  140  to other electronic devices, etc. 
     The communication application  240  may provide the communication functionality for a user of the station  115 . For example, the communication functionality may be a voice call. The voice call entails the station  115  transmitting and receiving voice packets from the station  125 . For purposes of the discussion below, the station  115  may represent a recipient of voice packets of the voice call while the station  125  may represent a transmitter of the voice packets. The station  125  and the station  115  may perform the transmission and reception of the voice packets, respectively, in known manners. The station  125  may perform the transmission of the voice packets without requiring preparation information. That is, the station  125  is substantially not required to have information of the access network  105  to transmit the voice packets. In contrast, the station  115  may receive the voice packets only when it is substantially prepared to receive incoming voice packets. Such preparation information to be used by the station  115  for receiving the voice packets may be provided by the transmitter of the transmitting station  125 . 
     When the station  115  receives a data transmission such as voice packets for the voice call, the station  115  may be required to have knowledge of a Transport Format (TF) and its validity for a Transport Channel (TrCH) in a Coded Composite Transport Channel (CCTrCH). Since more than one TrCH may be mapped onto a single physical channel, the station  125  may provide information to the station  115  regarding, for example, a number of transmitted bits of each TrCh in a Transmission Time Interval (TTI) in which a Transport Format Set (TFS) may be a sum of all TFs for one TrCH. A TF may include a dynamic portion and a semi-static portion. The dynamic portion of the TF may define the Transport Block Size (i.e., a sum of Radio Link Control (RLC) Payload size, a RLC Header, and MAC Header bits) and the Transport Block Set Size (i.e., a number of Transport Blocks that may be delivered in one TTI). The semi-static portion may define the TTI, coding type and rate, size of a CRC (if included), etc. Thus, this information may be passed via the access network  105  so that the station  115  may be “prepared” to receive the voice packets corresponding thereto. 
     One manner of indicating the type of TF is using a TF Identifier (TFI). The TFI from each TrCH is the Transport Format Combination (TFC). The TFC may identify a number of bits (i.e., Transport Blocks) of each TrCH that are transmitted in an ensuing TTI. The allowed TFCs is the Transport Format Combination Set (TFCS). One manner of indicating the actual TFC to the receiver of the station  115  is to receive a TFC Identifier (TFCI) word that is generated by the station  125  and transmitted to the station  115 . The station  115  may decode the TFCI word to receive the TFs for the single TrCH in order to demultiplex the TrCH out of the CCTrCH. 
     However, there may be instances when the TFCI word is unavailable. When no TFCI word is available, a Blind Transport Format Detection (BTFD) may be performed on the TrCHs within the CCTrCH that have more than one TF and that do not use Single Transport Format Detection (STFD). The BTFD manner requires a variety of different criteria to be performed such as only one CCTrCH being received. When BTFD is used for voice packets, the access network  105  may use a specific type of TF, particularly when the voice call is performed using a Wideband Code Division Multiple Access (WCDMA) standard. Specifically, the TFs 0x148 and 1x148 may be used for signaling. For a multiple transport format case, there are a variety of different data rates that are used including a 0-rate and a full-rate. The 0x148 TF may be a 0-rate TF while the 1x148 TF may be a full-rate TF. The type of data rate may indicate whether a cyclic redundancy check (CRC) is to be used therewith. Specifically, the 0-rate TF may not include a CRC while the full-rate does include the CRC. That is, the 0x148 TF may not include a CRC while the 1x148 TF includes the CRC. At the station  125 , the CRC may be generated for voice packets transmitted using the 1x148 TF. As discussed above, the CRC may be included in the semi-static portion of the TF. 
     Using the above manner, the preparation information may be provided to the station  115 . Upon reception of the TF signaling (i.e., 0x148 and 1x148 TFs), the station  115  may initially process the signaling using a physical layer (PHY). With regard to the PHY, the TF signaling may be represented as a Protocol Data Unit (PDU). Those skilled in the art will understand that the PHY may represent a first layer of the Open Systems Interconnection (OSI) Model that standardizes internal functionalities of a communication system. The PHY being the first (or lowest) layer may provide a first processing step for incoming data such as the PDUs. By providing a fundamental layer underlying the other higher layers of the OSI model, the PHY may determine a manner of forwarding PDUs to these higher layers. One particular higher layer is the Data Link Layer that is a second layer of the OSI model. The Data Link Layer may provide a framework for data transfers between network nodes. As such, the Data Link Layer may include a Radio Link Control (RLC) that is responsible for a variety of different functionalities related to the Data Link Layer such as transfer of upper layer PDUs. Although abstract concepts, the PHY and the RLC are represented within the baseband processor  210  of the station  115  in  FIG. 2  as PHY  250  and RLC  255 , respectively. 
     Thus, for each PDU received by the station  115 , the PHY  250  may perform an initial processing on the PDU. For example, the PHY  250  may determine whether the PDU includes a CRC. As discussed above, when the PDU is a 0x148 TF, there may not be a CRC included therewith whereas when the PDU is a 1x148 TF, there may be a CRC included therewith. When no CRC is included, the PHY  250  may transfer the PDU to the RLC  255  for further processing such as determining a higher layer in which to transfer the PDU. In one particular embodiment, the PHY  250  may automatically transfer the PDU to the RLC  255  when no CRC is found. In contrast, when a CRC is included, the PHY  250  may perform the error check using the CRC. Upon determining that the PDU is properly received, the PHY  250  may then transfer the PDU to the RLC  255 . However, if the PHY  250  determines that the PDU is not properly received and/or has errors therein, the PHY  250  may not transfer the PDU to any higher layer including the RLC  255 . Instead, the PHY  250  may transmit an indication to the access network  105  for a re-transmission of the PDU including the error. It should be noted that a 0x148TF may not be passed to the RLC  255  because all the processing that needs to be performed on such a PDU may be performed at the PHY  250  or by other layers that are not the RLC  255 . 
     Prior to receiving the PDUs in the first place, the transceiver  225  must be operated at a particular power level that allows for the PDUs to be received from the access network  105  given the network parameters that may be measured for the time the communication application  240  is used. As discussed above, the memory arrangement  215  may include setting information for the transceiver  225 . Thus, upon launching the communication application  240 , the network parameters (e.g., received signal strength indicator (RSSI)) may be measured to determine an initial power level to set the transceiver  225  as indicated in the setting information. The initial power level may be a predetermined value that provides an expected probability to receive any (and all) incoming PDUs. When different network parameters are measured while the communication application  240  is used, the power control application  240  may adjust the power level using known manners. However, outside this power control mechanism, at least one PDU may still be missed and not received by the station  115 . The RLC  255  may be capable of determining whether there is a gap in the received PDUs since the PDUs used in a WCDMA voice call having voice frames configured with BTFD are sequentially numbered and indicated therein (e.g., provided in the semi-static portion of the TF). When such a gap in PDUs is detected, the RLC  255  may be incapable of determining whether the gap is due to a missed transmission, whether this missed transmission is known by the PHY  250 , whether the missed PDU relative to the RLC  255  is not required by the RLC  255  but used by the PHY  250  (e.g., DRX/DTX used in Discontinuous Reception), etc. 
     According to the exemplary embodiments, the RLC  255  may communicate a feedback indication to the PHY  250  to improve reception of PDUs based upon actual missed transmissions. That is, the feedback indication from the RLC  255  may indicate a number of missed transmissions that enable the power control application  240  to adjust the target power to be used for subsequent receptions of PDUs. The target power may be adjusted based upon information known to the PHY  250  and the feedback indication provided by the RLC  255 . As will be described in further detail below, the information known to the PHY  250  may relate to PDUs that have been received by the station  115 , particularly at the PHY  250 , but not transferred to the RLC  255 . 
     The feedback indication communicated by the RLC  255  may relate to any gap that is detected by the RLC  255  based upon the sequence numbering of the PDUs that the RLC  255  has received. When the feedback indication only indicates that the gap in PDUs coincides with known PDUs that have been received but not transferred, the PHY  250  may determine to maintain the current power level. In contrast, when the station  115  does not receive a PDU, the PHY  250  may be unaware of this missing PDU. Thus, when the feedback indication includes a gap including at least one PDU that is not known by the PHY  250 , the PHY  250  may provide an adjustment signal to the power control application  240  to adjust the target power of the transceiver  225 . The adjustment signal may be generated based upon the setting information in which the power level is powered up based upon various criteria. For example, the power level may be increased in an incremental manner for each missing PDU. In one example, for N missing PDUs, the power level may be increased by a product of N and a predetermined amount such as 0.5-1.0 dB. In another example, the power level may be increased in a dynamic manner that incorporates the number of missing PDUs. The station  115  may also utilize measured network parameters and the feedback information to determine the adjustment to the target power. Various different scenarios may exist that incorporate the above manner of adjusting the target power in which several are described below with regard to  FIGS. 3A-B . 
     The initial power level and the amount of adjustment for the power level may be based upon any power value. That is, the power value may be any form known to those skilled in the art. For example, the power level may be measured in terms of a Signal-to-Interference Ratio (SIR) Threshold (SIRT). Those skilled in the art will understand that any other power level may be used such as dB, Signal-to-Noise Ratio (SNR), etc. 
       FIG. 3A  shows a first exemplary signaling diagram  300  and  FIG. 3B  shows a second exemplary signaling diagram  350  for setting a target power for a first set and a second set of signaling frames, respectively. Specifically, the signaling diagrams  300 ,  350  may represent a process of receiving PDUs and setting a target power based upon the feedback information of the RLC  240 . Thus, the signaling diagram  300  may be a beginning portion of the process while the signaling diagram  350  may be a continuation thereof. As illustrated, the signaling diagrams  300 ,  350  may illustrate an interaction between the access network  105  and the station  115  as well as with the PHY  250  and the RLC  255 . Thus, the signaling diagrams  300 ,  350  may relate to using the communication application  240  and further using the power control application  245  while the communication application  240  is in use. It may be assumed that the station  115  has established a connection with the access network  105  and has also established a connection with the station  125  to perform the communication application  240 . That is, all prior processes required for the PDUs to be received by the station  115  may be assumed to have been properly performed. 
     As discussed above, the PDUs may be transmitted from the access network  105  via the base station  110  to the station  115  in a sequential manner in which each PDU may also include a respective numbering within the sequence. In the signaling diagram  300  the communications are shown as being between the access network  105  and the station  115 . It should be understood that the direct communications are between the base station  110  (which may be considered a component of the access network  105 ) and the station  115 . Thus, the functionality that is described for the access network  105  herein may reside (wholly or partially) within the base station  110 . In another example, the functionality that is described for the access network  105  may reside (wholly or partially) within core network components of the access network  105 . 
     The signaling diagram  300  begins with a PDU ( 0 ), which is a 1x148 TF. The PDU ( 0 ) may be received by the station  115  in which the PHY  250  performs the initial processing for the PDU. For example, as discussed above, the PHY  250  may determine whether the PDU ( 0 ) has a CRC included to determine whether the PDU ( 0 ) has been properly received. The 1x148 TF PDU may include a CRC. Thus, the PDU ( 0 ) may be processed by the PHY  250  to determine whether the PDU ( 0 ) has been properly received from the access network  105 . As illustrated in the signaling diagram  300 , the PDU ( 0 ) may have been properly received based upon using the CRC such that the PDU ( 0 ) is transferred to the RLC  255 . It should be noted that the PHY  250  may transfer the PDU including the CRC when the error check has been passed and the PDU has been properly received. Since the PDUs in the signaling diagrams  300 ,  350  relate to voice packets used in the communication application  240 , the PDUs that need to be transferred to higher layers may be transferred from the PHY  250  to the RLC  255 . Accordingly, the PDU ( 0 ) is transferred from the PHY  250  to the RLC  255  for further processing. Upon receiving the PDU ( 0 ), the RLC  255  may store (e.g., in the memory arrangement  215 ) the sequence of PDUs being received. 
     However, such a transfer process is only exemplary and the PHY  250  may nonetheless be capable of transferring a PDU that fails the error check using the CRC. In such a scenario, various further steps may be performed by the PHY  250  such as indicating to the RLC  255  that the PDU that is being transferred failed the error check, requesting a re-transmission of the PDU from the access network  105  by transmitting a negative acknowledgement (NACK), etc. For illustrative purposes, the process described in the signaling diagrams  300 ,  350  uses the transfer process in which the PDU including the CRC must pass the error check. It should also be noted that there may be additional signaling between the station  115  and the access network  105  that is not shown in the signaling diagram  300 . For example, the PHY  250  may send an acknowledgement (ACK) when it is determined that the PDU has been received correctly. 
     In a next step, the station  115  receives a PDU ( 1 ) that is a 0x148 TF from the access network  105 . As described above, 0x148 TF PDUs typically do not include CRCs. If no CRC is included as is the case with 0x148 TF PDUs, the PHY  250  may process the PDU ( 1 ) without performing the CRC. However, 0x148 TF PDUs may also not need to be transferred to a higher layer for processing. Thus, the processing performed by the PHY  250  on PDU ( 1 ) completes the transaction with respect to this PDU ( 1 ) for the station  115 . It should be noted that in this case, since the PDU ( 1 ) has not been transferred to the RLC  255 , this will create a gap in the sequence with respect to PDUs received by the RLC  255 . The treatment of this gap will be discussed in greater detail below. 
     The station  115  may then receive a PDU ( 2 ) that is a 1x148 TF from the access network  105 . The processing of the PDU ( 2 ) is substantially similar to the processing described above for the PDU ( 0 ). The 1x148 TF PDU ( 2 ) may include a CRC and, thus, the PDU ( 2 ) may be processed by the PHY  250  to determine whether the PDU ( 2 ) has been properly received from the access network  105 . As illustrated in the signaling diagram  300 , the PDU ( 2 ) may have been properly received based upon using the CRC such that the PDU ( 2 ) is transferred to the RLC  255  for further processing. However, in this instance, upon the further processing of the PDU ( 2 ), the RLC  255  may be aware that there is a gap in the sequence of PDUs. Specifically, the immediately previous PDU relative to the PDU ( 2 ) is the PDU ( 0 ). As discussed above, the PDU ( 1 ) was not transferred to the RLC  255  because it was not a PDU that was required to be transferred to the RLC  255 . According to the exemplary embodiments, the RLC  255  may use the feedback system to communicate a feedback indication ( 1 ) to the PHY  250  that the PDU ( 1 ) has not been received. The PHY  250  may process the feedback indication ( 1 ) and determine whether this “missed” PDU relative to the RLC  255  is also a missed transmission relative to the PHY  250 . Specifically, the PHY  250  may determine the status of this PDU using its own knowledge of received PDUs from the access network  105 . As discussed above, the PDU ( 1 ) was received and processed by the PHY  250 . Thus, the PHY  250  is aware that this PDU ( 1 ) has been received and processed at the PPHY  250 . Since the PDU ( 1 ) indicated in the feedback indication coincides with a known, received PDU relative to the PHY  250 , the station  115  may maintain the current power level of the target power used for the transceiver  225 . That is, the transceiver  225  is operating at a sufficient power level to receive the PDUs. Thus, no increase in power is required. 
     The station  115  may then receives a PDU ( 3 ) that is a 1x148 TF from the access network  105 . The PDU ( 3 ) may be processed and transferred to the RLC  255  for further processing using a substantially similar manner as discussed above with regard to PDU ( 0 ) and PDU ( 2 ). Subsequently, a PDU ( 4 ) that is a 1x148 TF may then be received by the station  115  from the access network  105 . Since the PDU ( 4 ) is a 1x148 TF including a CRC, the PHY  250  check the integrity of the PDU ( 4 ) based on the CRC. However, as illustrated in the signaling diagram  300 , the PHY  250  may determine that the PDU ( 4 ) fails the error check. Thus, the PDU ( 4 ) may not be transferred to the RLC  255 . Instead, the PHY  250  may transmit a NACK ( 4 ) for the PDU ( 4 ) to the access network  105 . The NACK ( 4 ) may indicate that the PDU ( 4 ) is to be re-transmitted. Thus, in this example, the PHY  250  has knowledge of the PDU ( 4 ) that has been received but in an improper way. 
     The station  115  may then receive a PDU ( 5 ) that is a 1x148 TF from the access network  105 . The PDU ( 5 ) may be processed by the PHY  250  and transferred to the RLC  255  for further processing. However, in this instance, upon the further processing of the PDU ( 5 ), the RLC  255  may be aware that there is a gap in the sequence of PDUs. Specifically, the immediately previous PDU relative to the PDU ( 5 ) is the PDU ( 3 ). As discussed above, the PDU ( 4 ) was not transferred to the RLC  255  due to the failure of the error check. According to the exemplary embodiments, the RLC  255  may use the feedback system to communicate a feedback indication ( 4 ) to the PHY  250  that the PDU ( 4 ) has not been received. The PHY  250  may process the feedback indication ( 4 ) and determine whether this “missed” PDU relative to the RLC  255  is also a missed transmission relative to the PHY  250 . Specifically, the PHY  250  may determine the status of this PDU using its own knowledge of received PDUs from the access network  105 . As discussed above, the PDU ( 4 ) may have failed the error check using the CRC. Thus, the PDU ( 4 ) was not transferred from the PHY  250  to the RLC  255 . The PHY  250  is also aware that this PDU ( 4 ) has been received, although improperly (e.g., with errors). Since the PDU ( 4 ) indicated in the feedback indication coincides with a known, received PDU relative to the PHY  250 , the station  115  may maintain the current power level of the target power used for the transceiver  225 . That is, the transceiver  225  is operating at a sufficient power level to receive the PDUs. Thus, no increase in power is required. 
     The station  115  may then receive a PDU ( 6 ) that is a 1x148 TF from the access network  105 . The PDU ( 6 ) may be processed by the PHY  250  and transferred to the RLC  255  for further processing. A PDU ( 7 ) that is a 0x148 TF may then be transmitted from the access network  105 . However, as shown in the signaling diagram  300 , the PDU ( 7 ) may not be received by the station  115 , specifically by the PHY  250 . For example, various network conditions may have altered since the previous PDUs were received that may require a higher power level to be used for the target power of the transceiver  225 . Although not received, the access network  105  may continue to transmit the next PDU in the sequence until indicated otherwise (e.g., the NACK from the PHY  250 ). 
     The station  115  may then receive a PDU ( 8 ) that is a 1x148 TF from the access network  105 . The PDU ( 8 ) may be processed by the PHY  250  and transferred to the RLC  255  for further processing. However, in this instance (much like the PDU ( 5 )), upon the further processing of the PDU ( 8 ), the RLC  255  may be aware that there is a gap in the sequence of PDUs. Specifically, the immediately previous PDU relative to the PDU ( 8 ) is the PDU ( 6 ). As discussed above, the PDU ( 7 ) was not received by the PHY  250 . Thus, according to the exemplary embodiments, the RLC  255  may use the feedback system to communicate a feedback indication ( 7 ) to the PHY  250  that the PDU ( 7 ) has not been received. The PHY  250  may process the feedback indication ( 7 ) and determine that this “missed” PDU relative to the RLC  255  is also a missed transmission relative to the PHY  250 . In this case, the PDU ( 7 ) is a missed transmission to both the RLC  255  and the PHY  250 . At this point, the PHY  250  also has knowledge of the PDU ( 7 ). Since the PDU ( 7 ) is a missed PDU relative also to the PHY  250 , the station  115  may increase the power level of the target power used by the transceiver  225 . Specifically, the PHY  250  may transmit a signal to the power control application  245  to increase the power level based upon an indication in the signal. As discussed above, the increase may be performed incrementally based upon a product of N missing PDUs and a predetermined incremental value V. Thus, since only a single PDU ( 7 ) is detected to be a missed transmission thereby N being 1, the power increase may be 1×V. Accordingly, the new power level may be a sum of the current power level and the power increase. 
     As discussed above, the memory arrangement  215  may store setting information for the power control application  245 . The setting information may include a predetermined maximum power level that is not to be exceeded. Thus, the power control application  245  may perform a check to determine whether the new power level exceeds the predetermined maximum power level. If the new power level is less than the predetermined maximum power level, the power control application  245  may set the target power of the transceiver  225  to the new power level. However, if the new power level is greater than or equal to the predetermined maximum power level, the power control application  245  may set the target power of the transceiver  225  to the predetermined maximum power level. 
     Continuing to the signaling diagram  350  that is illustrated in  FIG. 3B , a PDU ( 9 ) that is a 1x148 TF may then be received by the station  115  from the access network  105 . The PDU ( 9 ) may be received using the target power being set to the new power level from the process that occurred due to receiving the PDU ( 8 ). The PDU ( 9 ) may be processed by the PHY  250  and transferred to the RLC  255  for further processing. A PDU ( 10 ) that is a 1x148 TF and a PDU ( 11 ) that is a 0x148 TF may then be transmitted from the access network  105 . However, as shown in the signaling diagram  350 , the PDU ( 10 ) and the PDU ( 11 ) may not be received by the station  115 , specifically by the PHY  250 . Subsequently, a PDU ( 12 ) that is a 1x148 TF may be received by the station  115  from the access network  105 . The PHY  250  may process the PDU ( 12 ) and determine that it passes the error check based upon the CRC included therein and transfers the PDU ( 12 ) to the RLC  255 . The RLC  255  may further process the PDU ( 12 ). In a substantially similar manner discussed above, the RLC  255  may communicate a feedback indication ( 10 ,  11 ) to the PHY  250  indicating that there is a gap and that this gap includes two missing PDUs in the sequence since the immediately prior received PDU relative to the PDU ( 12 ) is the PDU ( 9 ). The PHY  250  may process the feedback indication ( 10 ,  11 ) in a substantially similar manner as discussed above. However, with two missing PDUs that are detected, the increase in power level may be 2×V. Thus, the current power level may be increased by 2×V to set a new power level. 
     It should be noted that this effect may be cumulative. That is, the power level used for the PDUs ( 0 )-( 8 ) may have been an initial power level V i  that was set as indicated in the setting information. After receiving the PDU ( 8 ), the power level was increased by 1×V. Thus, the new power level after receiving the PDU ( 8 ) is set to be (V i +1×V). From the PDU ( 9 ), the current power level is now (V i +1×V). However, after receiving the PDU ( 12 ), the power level was increased by 2×V. Thus, the new power level after receiving the PDU ( 12 ) is set to be (V i +1×V+2×V). 
     Returning to the signaling diagram  350 , a PDU ( 13 ) that is a 0x148 TF, a PDU ( 14 ) that is a 1x148 TF, and a PDU ( 15 ) that is a 0x148 TF may then be transmitted from the access network  105 . However, as shown in the signaling diagram  350 , the PDU ( 13 ), the PDU ( 14 ), and the PDU ( 15 ) may not be received by the station  115 , specifically by the PHY  250 . Subsequently, a PDU ( 16 ) that is a 1x148 TF may be received by the station  115  from the access network  105 . As illustrated in the signaling diagram  350 , the PHY  250  may determine that the PDU ( 16 ) fails the error check. Thus, the PDU ( 16 ) may not be transferred to the RLC  255 . Instead, the PHY  250  may transmit a NACK ( 16 ) for the PDU ( 16 ) to the access network  105 . The NACK ( 16 ) may indicate that the PDU ( 16 ) is to be re-transmitted. A PDU ( 17 ) that is a 0x148 TF may then be transmitted from the access network  105 . However, as shown in the signaling diagram  350 , the PDU ( 17 ) may not be received by the station  115 , specifically by the PHY  250 . Subsequently, a PDU ( 18 ) that is a 1x148 TF may be received by the station  115  from the access network  105 . 
     The PHY  250  may process the PDU ( 18 ) and determine that it passes the error check based upon the CRC included therein and transfers the PDU ( 18 ) to the RLC  255 . The RLC  255  may further process the PDU ( 18 ). In a substantially similar manner discussed above, the RLC  255  may communicate a feedback indication ( 13 - 17 ) to the PHY  250  indicating that there is a gap and that this gap includes six missing PDUs in the sequence since the immediately prior received PDU relative to the PDU ( 18 ) is the PDU ( 12 ). The PHY  250  may process the feedback indication ( 13 - 17 ) in a substantially similar manner as discussed above. In this scenario, the PHY  250  may determine that the PDU ( 13 ), the PDU ( 14 ), the PDU ( 15 ), and the PDU ( 17 ) are all missing PDUs relative to both the RLC  255  and the PHY  250 . However, the PDU ( 16 ) may coincide with a known, received PDU relative to the PHY  250 . In this case, the PHY  250  may transmit a signal to the power control application  245  to increase the target power of the transceiver  225 . This increase in power level may be provided in a variety of manners due to the existence of a known, received PDU within the missing PDUs. In a first example, the power level may be increased based upon a total number of missing PDUs within the indicated gap. Since there are four missing PDUs in this gap (i.e., PDUs ( 13 )-( 15 ) and PDU ( 17 )), the current power level may be increased by 4×V to set a new power level. In a second example, the power level may be increased based upon a total number of consecutive missing PDUs within the indicated gap. Since there are missing PDUs in this gap include three missing PDUs that are consecutive, the current power level may be increased by 3×V to set a new power level. 
     It should be noted that the above manner of communicating the feedback indication from the RLC  255  to the PHY  250  is only exemplary. Specifically, the above manner of communicating the feedback indication is immediately after the RLC  255  detects that there is a missing PDU in the sequence. However, the exemplary embodiments may also be modified such that the feedback indication is communicated under various different circumstances. For example, the feedback indication may be communicated after a particular time period. Upon the time period lapsing, the RLC  255  may provide the feedback indication that indicates whether there is a missing PDU and if so, how many. In another example, the feedback indication may be communicated after a particular number of PDUs have been received by the RLC  255 . Thus, after receiving this number of PDUs, the RLC  255  may communicate the feedback indication that indicates whether there is a missing PDU and if so, how many. 
     It should also be noted that the above-described manner of adjusting the target power may also incorporate a powering down process using known manners. For example, upon detecting measured network parameters that enable a lesser power level to be used from a current power level, the power control application  245  may adjust the target power by decreasing the power level. For example, the station  115  may transition from the base station  110  to another base station from which the station  115  receives a stronger signal. The power control application  245  may be informed of this transition or may receive indications of the stronger signal and may decrease the power of the transceiver  230  back to an initial setting or in steps as PDUs are successfully received. In another example, the power control application  245  may consider a limited power supply that the station  115  uses. If the limited power supply reaches a predetermined threshold capacity, the power control application  245  may adjust the target power by decreasing the power level after a predetermined time period of using the increased power level. 
       FIG. 4  shows an exemplary method  400  for setting a target power. The method  400  relates to using the feedback system discussed above in which the RLC  255  communicates a feedback indication to the PHY  250  to determine a degree of increasing a power level of a target power used for the transceiver  225  of the station  115 . The method  400  will be described with regard to the station  115  and a manner in which the communication application  240  and the power control application  245  are used to set the target power. The method  400  will be described with regard to the network arrangement  100  of  FIG. 1 , the components of the station  115  of  FIG. 2 , and the signaling diagrams  300 ,  350  of  FIGS. 3A, 3B , respectively. 
     In step  405 , the station  115  may determine whether there is an incoming transmission. As discussed above, the station  115  may be configured to perform a voice call using WCDMA in which signaling from the access network  105  uses TFs 0x148 and 1x148 when voice packets are configured with BTFD. If there is no incoming transmission, the station  115  may end the method  400 . If there is an incoming transmission, the station  115  continues the method  400  to step  410 . 
     In step  410 , the station  115  receives a PDU from the access network  105 . Specifically, the PHY  250  functionality of the baseband processor  210  for the station  115  receives the PDU. As discussed above in the signaling diagram  300  of  FIG. 3A , a first PDU that is received may be a PDU ( 0 ). However, the method  400  may be used for each PDU that is received by the station  115 . In step  415 , the PHY  250  decodes the PDU to determine whether further processing is required by the PHY  250 . For example, the PDU may include a CRC for an error check to be performed by the PHY  250  (e.g., when the PDU is a 1x148 TF). If no further processing is required by the PHY  250 , the method  400  continues to step  420 . However, if further processing is required such as performing the error check, the method  400  continues to step  425  where the PDU is processed. 
     In step  430 , the PHY  250  determines whether the PDU has been properly received. For example, the PHY  250  determines whether the PDU has been properly received by performing the error check using the CRC included in the PDU. If the PDU has been properly received, the method  400  continues to step  420 . If the PDU has not been properly received, the method  400  continues to step  435  where an indication (e.g., a NACK) is transmitted from the station  115  to the access network  105 . The NACK may indicate the PDU that was improperly received such that the access network  105  may re-transmit this improperly received PDU. For example, the PDU ( 4 ) of the signaling diagram  300  of  FIG. 3A  was determined to be improperly received. The station  115  may transmit the NACK to the base station  110  indicating the PDU ( 4 ) was not received correctly and the base station  110  may re-transmit the PDU ( 4 ) to the station  115 . It should be noted that the receipt of the retransmission of the PDU ( 4 ) may be out of order, e.g., not received between PDU ( 3 ) and PDU ( 5 ). However, the RLC  255 , having received the PDU ( 3 ) and PDU ( 5 ) will understand that there is not a gap when the retransmission of PDU ( 4 ) is received. 
     In step  440 , the station  115  determines whether there are any further received PDUs. If there are no further PDUs, the station  115  may end the method  400 . However, when there are further PDUs, the station  115  may return the method  400  to step  410  to receive the next PDU from the access network  105 . 
     The step  420  of method  400  is reached when the PHY  250  determines that the PDU does not require further processing (e.g. PDU ( 0 ) of  FIG. 3A  as determined in step  415 ) or when the PHY  250  has determined that the PDU has been properly received by the PHY  250  (e.g., PDU ( 2 ) of  FIG. 3A  as determined in step  430 ). In step  420 , the PHY  250  may determine a higher layer in which the PDU is to be transferred. For example, the PHY  250  may determine that the PDUs that are received are to be transferred to the second layer including the RLC  255 . Thus, in step  420 , the PDU is transferred from the PHY  250  to the RLC  255 . 
     In step  445 , the PDU is further processed at the RLC  255 . For example, part of this processing may be to determine the sequence information of the PDU. In step  450  it is determined by the RLC  455  if there is a gap in the received PDUs. Referring back to  FIG. 3A , the RLC  455  will determine that there is no gap upon the receipt of, for example, PDUs ( 1 )-( 3 ). In this case, the method  400  may continue to step  440  to determine if there are any additional PDUs that need to be processed. It should be noted that this does not mean that the processing of an individual PDU is completed. Rather, there may be many more processing steps that are performed by the baseband processor  210  and/or the applications processor  205  on the received PDU. However, for the purposes of the exemplary embodiment of adaptive power control for the transceiver  230 , no additional information is needed from the received PDU. 
     On the other hand, if in step  450  the RLC  255  determines there is a gap in the received PDUs, the RLC  255 , in step  455 , will communicate a feedback indication to the PHY  250  indicating the gap. Referring back to  FIG. 3A , the RLC  255  will determine that there is a gap upon the receipt of, for example, PDU ( 5 ) because PDU ( 4 ) is missing and PDU ( 8 ) because PDU ( 7 ) is missing. As described above, the RLC  455  does not know what caused the gap. In the example of missing PDU ( 4 ), the PDU ( 4 ) was received, but it was not received correctly because the CRC check failed. In the example of PDU ( 7 ), the PDU ( 7 ) was never received by the transceiver  230  of the station  115 . As discussed above, the feedback indication sent from the RLC  255  to the PHY  250  may include an indication of the gap and the identification of the missing PDUs in the gap. In the example of missing PDUs ( 4 ) and ( 7 ) of  FIG. 3A , there is only one missing PDU. In the example of missing PDUs ( 13 )-( 17 ) of  FIG. 3B , there are five (5) missing PDUs. 
     In step  460 , the PHY  250  determines whether the missing PDUs indicated in the feedback indication are known as missing to the PHY  250 . In the first example and as discussed above in the signaling diagram  300  of  FIG. 3A , the gap detected by the RLC  255  from received PDU ( 3 ) and received PDU ( 5 ) for PDU ( 4 ) is known by the PHY  250  because the PHY  250  attempted to process this PDU ( 4 ), but had to send a NACK ( 4 ) to the access network  205  because the PDU ( 4 ) was received incorrectly. If the PHY  250  determines the missing the PDU, as identified by the RLC  255 , is known by the PHY  250  such as the PDU ( 4 ), the method  400  continues to step  465  where the power level of the target power used by the transceiver  230  as set by the power control application  245  is maintained. As described above, there is no need to increase the power level because the station  115  received the PDU ( 4 ), it was just that the gap was created (relative to the RLC  255 ) because the PDU ( 4 ) was corrupted as indicated by the CRC check. Subsequently, the method  400  continues to step  440  to determine whether there are any further PDUs. 
     In a second example as discussed above in which the missing PDU indicated in the feedback indication sent by the RLC  255  is PDU ( 7 ), the PHY  250  may determine in step  460  that the PDU ( 7 ) is not known by the PHY  250  because it was never received. Since the PDU ( 7 ) was never received, the station  115  will increase the power of the transceiver  230  to increase the chances that PDUs will not be missed. In step  470 , the station  115  may determine an amount of power up for each missing PDU. As described above, in one example, the power increase may be a step value (V) for each missing PDU. In this particular example, the power increase may be 1×V since one PDU ( 7 ) is missing. However, in the example of  FIG. 3B  where PDUs ( 10 )-( 11 ) are detected to be missing by both the RLC  255  and the PHY  250 , the increase in power may be two step values (e.g., 2×V). 
     However, before implementing the power increase, the station  115 , in step  475 , may determine whether the proposed power increase applied to a current power level results in a new power level that is beyond a predetermined maximum power level. If the new power level is less than the predetermined maximum power level, the method  400  continues to step  480  in which the new power level is set for the target power of the transceiver  230 . However, if the new power level is greater than or equal to the predetermined maximum power level, the method  400  continues to step  485  in which the predetermined maximum power level is set for the target power of the transceiver  230 . Subsequent to steps  480  or  485 , the method  400  to step  440  to determine whether there are any further PDUs. 
     It should be noted that the method  400  may be modified in a variety of manners. For example, to address each scenario discussed above in the signaling diagrams  300 ,  350 , the method  400  may be modified to include steps that address when a group of PDUs determined to be missing by the RLC  255  only includes a subset of missing PDUs relative to the PHY  250 . Specifically, this may be for the PDUs ( 12 )-( 18 ) in the signaling diagram  350  of  FIG. 3B . 
     The exemplary embodiments provide a station and method for setting a target power for a transceiver to receive data from a network based upon a feedback indication communicated by a radio link control to a physical layer of a processor of a receiving station. Based upon knowledge of the physical layer and the information included in the feedback indication, a determination of whether a current power level requires adjustment, namely an increase in power level, due to a missing unit of data. If the feedback indication includes a data unit that is known to the physical layer, this data unit has already been received by the station  115  such that a change in the current power level is not required. However, if the feedback indication includes at least one data unit that is unknown to the physical layer, the at least one data unit has not been received by the station  115  and an increase in the current power level may be required. Thus, the current power level may be increased in an incremental manner using a predetermined incremental value for each missing data unit. 
     Those skilled in the art will appreciate that the exemplary embodiments may apply to any acknowledgement mode transmission scheme where a CRC is not included for processing at the PHY  250  for a particular transmission. That is, the exemplary embodiments may be used with any transmission scheme where a transfer is performed from a first processing unit to a second processing unit in which the second processing unit communicates a feedback indication to the first processing unit to determine a manner of setting a target power based upon information known to the first processing unit and the feedback indication. For example, the transmission scheme may be a Hybrid Automatic Repeat Request (HARQ) in which the exemplary embodiments may be used therewith. 
     Those skilled in the art will understand that the above-described exemplary embodiments may be implemented in any suitable software or hardware configuration or combination thereof. An exemplary hardware platform for implementing the exemplary embodiments may include, for example, an Intel x86 based platform with compatible operating system, a Mac platform and MAC OS, mobile device including operating systems such as iOS, Android, etc. In a further example, the exemplary embodiments of the above described method may be embodied as a program containing lines of code stored on a non-transitory computer readable storage medium that, when compiled, may be executed on a processor or microprocessor. 
     It will be apparent to those skilled in the art that various modifications may be made in the present invention, without departing from the spirit or the scope of the invention. Thus, it is intended that the present invention cover modifications and variations of this invention provided they come within the scope of the appended claims and their equivalent.

Metadata:
Filing Date: 20140530
Publication Date: 20160719
Grant Date: 20160719
Priority Date: 20140530
Inventors: KARRI SAI SRAVAN BHARADWAJ
ARORA SUNNY
RAJU ARJUN BHUPATHI
Assignee: APPLE INC
CPC Classifications: [{"code": "H04W52/34", "inventive": true, "first": true, "tree": "[]"}, {"code": "H04W52/48", "inventive": true, "first": true, "tree": "[]"}, {"code": "H04W52/48", "inventive": true, "first": false, "tree": "[]"}, {"code": "H04W52/34", "inventive": true, "first": true, "tree": "[]"}]
Family ID: 54703446