Interference coordination for peer-to-peer (p2p) communication and wide area network (wan) communication

Abstract

Techniques for supporting peer-to-peer (P2P) communication in a wide area network (WAN) are disclosed. In an aspect, interference coordination between P2P devices engaged in P2P communication and WAN devices engaged in WAN communication may be performed based on a network-controlled architecture. For the network-controlled architecture, P2P devices may detect other P2P devices and/or WAN devices and may send measurements (e.g., for pathloss, interference, etc.) for the detected devices to the WAN (e.g., serving base stations). The WAN may perform resource partitioning and/or association for the P2P devices based on the measurements. Association may include selection of P2P communication or WAN communication for a given P2P device. Resource partitioning may include allocation of resources to a group of P2P devices for P2P communication. The WAN may send the results of association and/or resource partitioning to the P2P devices, which may communicate in accordance with the association and/or resource partitioning results.

What is claimed is: 
     
         1 . A method of wireless communication in a wide area network (WAN), comprising:
 performing peer discovery by a first device supporting peer-to-peer (P2P) communication and WAN communication;   detecting at least one second device by the first device via the peer discovery;   obtaining at least one measurement for the at least one second device by the first device;   sending the at least one measurement from the first device to the WAN;   receiving results of association, or resource partitioning, or both association and resource partitioning from the WAN, wherein association to select P2P communication or WAN communication, or resource partitioning to allocate resources for P2P communication, or both association and resource partitioning are performed by the WAN for the first device based on the at least one measurement; and   communicating by the first device based on the results of association, or resource partitioning, or both.   
     
     
         2 . The method of  claim 1 , wherein the performing peer discovery comprises transmitting a proximity detection signal by the first device to enable at least one other device to detect the first device. 
     
     
         3 . The method of  claim 1 , wherein the performing peer discovery comprises detecting at least one proximity detection signal from the at least one second device, and wherein the obtaining at least one measurement comprises making the at least one measurement for the at least one second device by the first device based on the at least one proximity detection signal. 
     
     
         4 . The method of  claim 1 , wherein the obtaining at least one measurement comprises making at least one pathloss measurement for the at least one second device by the first device, each pathloss measurement being indicative of pathloss between the first device and one of the at least one second device. 
     
     
         5 . The method of  claim 1 , further comprising:
 determining at least one network address of the at least one second device by the first device; and   sending the at least one network address of the at least one second device to the WAN.   
     
     
         6 . The method of  claim 1 , wherein the receiving the results of association, or resource partitioning, or both comprises receiving a decision of P2P communication or WAN communication selected by the WAN for the first device, and wherein the communicating by the first device comprises directly communicating with the at least one second device by the first device if P2P communication is selected. 
     
     
         7 . The method of  claim 1 , wherein the receiving the results of association, or resource partitioning, or both comprises receiving information indicative of the resources allocated to the first device for P2P communication, and wherein the communicating by the first device comprises directly communicating with the at least one second device on the resources allocated for P2P communication by the first device. 
     
     
         8 . The method of  claim 1 , further comprising:
 receiving a maximum transmit power level to be used by the first device for P2P communication; and   transmitting at the maximum transmit power level or lower by the first device for P2P communication.   
     
     
         9 . The method of  claim 1 , further comprising:
 detecting at least one P2P device potentially causing strong interference to the first device; and   sending information indicative of the at least one P2P device to the WAN.   
     
     
         10 . The method of  claim 1 , further comprising:
 making at least one interference measurement for at least one WAN device by the first device, each WAN device communicating with the WAN, each interference measurement being made on different resources and indicative of interference detected by the first device from one of the at least one WAN device; and   sending the at least one interference measurement for the at least one WAN device to the WAN.   
     
     
         11 . The method of  claim 10 , wherein each interference measurement sent by the first device is further indicative of particular resources on which strong interference is detected by the first device. 
     
     
         12 . The method of  claim 1 , wherein the first device is a P2P client in a P2P group including the first device and the at least one second device, the method further comprising:
 performing a random access procedure by the first device to establish a P2P communication link with the at least one second device.   
     
     
         13 . The method of  claim 1 , wherein the first device is a P2P server in a P2P group including the first device and the at least one second device, the method further comprising:
 scheduling the at least one second device for data transmission for P2P communication by the first device.   
     
     
         14 . An apparatus for wireless communication, comprising:
 means for performing peer discovery by a first device supporting peer-to-peer (P2P) communication and wide area network (WAN) communication;   means for detecting at least one second device by the first device via the peer discovery;   means for obtaining at least one measurement for the at least one second device by the first device;   means for sending the at least one measurement from the first device to a WAN;   means for receiving results of association, or resource partitioning, or both association and resource partitioning from the WAN, wherein association to select P2P communication or WAN communication, or resource partitioning to allocate resources for P2P communication, or both association and resource partitioning are performed by the WAN for the first device based on the at least one measurement; and   means for communicating by the first device based on the results of association, or resource partitioning, or both.   
     
     
         15 . The apparatus of  claim 14 , further comprising:
 means for determining at least one network address of the at least one second device by the first device; and   means for sending the at least one network address of the at least one second device to the WAN.   
     
     
         16 . The apparatus of  claim 14 , wherein the means for receiving the results of association, or resource partitioning, or both comprises means for receiving a decision of P2P communication or WAN communication selected by the WAN for the first device, and wherein the means for communicating by the first device comprises means for directly communicating with the at least one second device by the first device if P2P communication is selected. 
     
     
         17 . The apparatus of  claim 14 , wherein the means for receiving the results of association, or resource partitioning, or both comprises means for receiving information indicative of the resources allocated to the first device for P2P communication, and wherein the means for communicating by the first device comprises means for directly communicating with the at least one second device on the resources allocated for P2P communication by the first device. 
     
     
         18 . An apparatus for wireless communication, comprising:
 at least one processor configured to perform peer discovery by a first device supporting peer-to-peer (P2P) communication and wide area network (WAN) communication, to detect at least one second device by the first device via the peer discovery, to obtain at least one measurement for the at least one second device by the first device, to send the at least one measurement from the first device to a WAN, to receive results of association, or resource partitioning, or both association and resource partitioning from the WAN, wherein association to select P2P communication or WAN communication, or resource partitioning to allocate resources for P2P communication, or both association and resource partitioning are performed by the WAN for the first device based on the at least one measurement, and to communicate by the first device based on the results of association, or resource partitioning, or both.   
     
     
         19 . The apparatus of  claim 18 , wherein the at least one processor is configured to determine at least one network address of the at least one second device by the first device, and to send the at least one network address of the at least one second device to the WAN. 
     
     
         20 . The apparatus of  claim 18 , wherein the at least one processor is configured to receive a decision of P2P communication or WAN communication selected by the WAN for the first device, and to directly communicate with the at least one second device by the first device if P2P communication is selected. 
     
     
         21 . The apparatus of  claim 18 , wherein the at least one processor is configured to receive information indicative of resources allocated to the first device for P2P communication, and to directly communicate with the at least one second device on the allocated resources by the first device. 
     
     
         22 . A computer program product, comprising:
 a non-transitory computer-readable medium comprising:
 code for causing at least one processor to perform peer discovery by a first device supporting peer-to-peer (P2P) communication and wide area network (WAN) communication, 
 code for causing the at least one processor to detect at least one second device by the first device via the peer discovery, 
 code for causing the at least one processor to obtain at least one measurement for the at least one second device by the first device, 
 code for causing the at least one processor to send the at least one measurement from the first device to a WAN, 
 code for causing the at least one processor to receive results of association, or resource partitioning, or both association and resource partitioning from the WAN, wherein association to select P2P communication or WAN communication, or resource partitioning to allocate resources for P2P communication, or both association and resource partitioning are performed by the WAN for the first device based on the at least one measurement, and 
 code for causing the at least one processor to communicate by the first device based on the results of association, or resource partitioning, or both.