Method and apparatus for allocating discovery resource pools in a wireless communication system

Abstract

A method and apparatus for allocating discovery resource pools are disclosed. The method includes the WCN receiving a Discovery Request message from a UE. The method further includes the WCN transmitting a Discovery Response message to the UE, wherein the Discovery Response message includes information to indicate at least a discovery resource pool for the UE to use.

1 . A method for allocating discovery resource pools, wherein at least a common discovery resource pool and a dedicated discovery resource pool are supported for device-to-device (D2D) discovery in a wireless communication network (WCN), comprising:
 the WCN receives a Discovery Request message from a user equipment (UE); and   the WCN transmits a Discovery Response message to the UE, wherein the Discovery Response message includes information to indicate at least a discovery resource pool for the UE to use.   
     
     
         2 . The method of  claim 1 , wherein a configuration of the common discovery resource pool and a configuration of the dedicated discovery resource pool are included in a system information message. 
     
     
         3 . The method of  claim 1 , wherein the Discovery Request message includes at least a ProSe Application ID or at least a part or a subset of a ProSe Application ID. 
     
     
         4 . The method of  claim 1 , wherein the Discovery Response message further includes a ProSe Application Code and/or a discovery filter. 
     
     
         5 . The method of  claim 1 , further comprising:
 the WCN receives a D2D Discovery Resource Request message from the UE if the information indicates the dedicated discovery resource pool for the UE to use.   
     
     
         6 . The method of  claim 1 , further comprising:
 the WCN transmits a D2D Discovery Resource Response message to the UE, wherein the D2D Discovery Resource Response message includes a configuration of dedicated discovery resource for the UE to use.   
     
     
         7 . The method of  claim 1 , further comprising:
 the WCN indicates if dedicated discovery resources are available in a system information message.   
     
     
         8 . A method for allocating discovery resource pools, wherein at least a common discovery resource pool and a dedicated discovery resource pool are supported for device-to-device (D2D) discovery in a wireless communication network (WCN), comprising:
 a user equipment (UE) transmits a Discovery Request message to the WCN; and   the UE receives a Discovery Response message from the WCN, wherein the Discovery Response message includes information to indicate at least a discovery resource pool for the UE to use.   
     
     
         9 . The method of  claim 8 , wherein a configuration of the common discovery resource pool and a configuration of the dedicated discovery resource pool are included in a system information message. 
     
     
         10 . The method of  claim 8 , further comprising:
 the UE reads a configuration of the common discovery resource pool if the information indicates the common discovery resource pool for the UE to use.   
     
     
         11 . The method of  claim 8 , further comprising:
 the UE reads from a system information message a configuration(s) of the discovery resource pool(s) indicated in the Discovery Response message.   
     
     
         12 . The method of  claim 8 , wherein the Discovery Request message includes at least a ProSe Application ID or at least a part or a subset of a ProSe Application ID. 
     
     
         13 . The method of  claim 12 , wherein the ProSe Application ID is an identity used for direct discovery and for identifying a service. 
     
     
         14 . The method of  claim 8 , wherein the Discovery Response message further includes a ProSe Application Code and/or a discovery filter. 
     
     
         15 . The method of  claim 14 , wherein the ProSe Application Code is contained in a discovery signal transmitted “over the air” by the UE. 
     
     
         16 . The method of  claim 8 , further comprising:
 the UE transmits a D2D Discovery Resource Request message to the WCN if the information indicates the dedicated discovery resource pool for the UE to use.   
     
     
         17 . The method of  claim 16 , further comprising:
 the UE does not transmit the D2D Discovery Resource Request message to the WCN if a system information message indicates that dedicated discovery resources are not available.   
     
     
         18 . The method of  claim 8 , further comprising:
 the UE receives a D2D Discovery Resource Response message from the WCN, wherein the D2D Discovery Resource Response message includes a configuration of dedicated discovery resource for the UE to use.   
     
     
         19 . The method of  claim 18 , further comprising:
 the UE transmits discovery signals using the dedicated discovery resource based on the configuration.   
     
     
         20 . The method of  claim 8 , further comprising:
 the UE monitors discovery signals in the discovery resource pool(s) indicated in the Discovery Response message based on a configuration(s) read from a system information message.