Methods and apparatus for enhanced system access control for peer-to-peer wireless communication networks

Abstract

An apparatus, a method, and a computer program product are provided in which an information block is generated to include an expression encoded based on a system key and an input. The input includes an area identifier and a time information. The information block is then broadcasted. An apparatus, a method, and a computer program product are provided in which an information block is received that includes an expression encoded based on a system key and an input. The input includes an area identifier and a time information. The information block is decoded based on the area identifier and the time information to obtain the expression.

What is claimed is: 
     
         1 . A method of wireless communication by a wireless device, comprising:
 generating, by the wireless device, an information block comprising an expression, wherein the expression is an application identifier; and   broadcasting, by the wireless device, the information block over a peer discovery channel,   wherein the information block is encoded with a system key and an input, the input comprising an area identifier and a time information, prior to broadcasting by the wireless device.   
     
     
         2 . The method of  claim 1 , wherein the information block is a peer discovery information block. 
     
     
         3 . The method of  claim 1 , wherein the expression is unique. 
     
     
         4 . The method of  claim 1 , further comprising:
 generating a key stream by encoding the input comprising the area identifier and the time information based on the system key.   
     
     
         5 . The method of  claim 4 , further comprising:
 combining the key stream with the expression for generating the information block.   
     
     
         6 . The method of  claim 1 , wherein the input further comprises:
 a peer discovery resource identifier and system-wide known data including a set of known bits for padding the input.   
     
     
         7 . The method of  claim 1 , wherein the information block is encoded using a keyed hash function. 
     
     
         8 . A method of wireless communication by a wireless device, comprising:
 receiving, by the wireless device, an information block comprising an expression, wherein the expression is an application identifier; and   decoding, by the wireless device, the information block for obtaining the expression for discovering an application stored at a peer wireless device,   wherein the decoding is based at least on a system key and an input, the input comprising an area identifier and a time information.   
     
     
         9 . The method of  claim 8 , wherein the information block is a peer discovery information block. 
     
     
         10 . The method of  claim 8 , wherein the expression is unique. 
     
     
         11 . The method of  claim 8 , further comprising:
 generating a key stream by encoding the input comprising the area identifier and the time information based on the system key.   
     
     
         12 . The method of  claim 11 , further comprising:
 combining the key stream with the information block for decoding the information block for obtaining the expression.   
     
     
         13 . The method of  claim 8 , wherein the input further comprises:
 a peer discovery resource identifier and system-wide known data including a set of known bits for padding the input.   
     
     
         14 . An apparatus for wireless communication, comprising:
 a memory;   at least one processor coupled to the memory and configured to:
 generate an information block comprising an expression, wherein the expression is an application identifier; and 
 broadcast the information block over a peer discovery channel, 
 wherein the information block is encoded with a system key and an input, the input comprising an area identifier and a time information, prior to broadcasting by the wireless device. 
   
     
     
         15 . The apparatus of  claim 14 , wherein the information block is a peer discovery information block. 
     
     
         16 . The apparatus of  claim 14 , wherein the expression is unique. 
     
     
         17 . The apparatus of  claim 14 , wherein the at least one processor is further configured to:
 generate a key stream by encoding the input comprising the area identifier and the time information based on the system key.   
     
     
         18 . The apparatus of  claim 17 , wherein the at least one processor is further configured to combine the key stream with the expression for generating the information block. 
     
     
         19 . The apparatus of  claim 14 , wherein the input further comprises a peer discovery resource identifier and system-wide known data including a set of known bits for padding the input. 
     
     
         20 . The apparatus of  claim 14 , wherein the at least one processor is further configured to encode using a keyed hash function. 
     
     
         21 . A apparatus for wireless communication, comprising:
 a memory;   at least one processor coupled to the memory and configured to:
 receive an information block comprising an expression, wherein the expression is an application identifier; and 
 decode the information block for obtaining the expression for discovering an application stored at a peer wireless device, 
 wherein the decoding is based at least on a system key and an input, the input comprising an area identifier and a time information. 
   
     
     
         22 . The apparatus of  claim 21 , wherein the information block is a peer discovery information block. 
     
     
         23 . The apparatus of  claim 21 , wherein the expression is unique. 
     
     
         24 . The apparatus of  claim 21 , wherein the at least one processor is further configured to:
 generate a key stream by encoding the input comprising the area identifier and the time information based on the system key.   
     
     
         25 . The apparatus of  claim 24 , wherein the at least one processor is further configured to:
 combine the key stream with the information block for decoding the information block for obtaining the expression.   
     
     
         26 . The apparatus of  claim 21 , wherein the input further comprises a peer discovery resource identifier and system-wide known data including a set of known bits for padding the input.