Apparatus and method for transmitting d2d data based on resource pattern

Abstract

A method and apparatus for supporting a device-to-device (D2D) communication between user equipments (UEs) are provided. A method of transmitting device-to-device (D2D) data using a D2D data transmission resource by a user equipment (UE), the method including: receiving, at a UE, configuration information associated with a D2D data transmission resource, the configuration information including information of a D2D data allocation period and being transmitted from an evolved NodeB (eNB); determining, at the UE, a D2D data transmission resource in each D2D data allocation period, the D2D data transmission resource including a pool of subframes; selecting D2D data transmission subframes from among the pool of subframes based on a changed pattern, the changed pattern being derived from a basic pattern; and transmitting, from the UE to another UE, D2D data based on the selected D2D data transmission subframes.

What is claimed is: 
     
         1 . A method comprising:
 receiving, by a wireless user device, one or more configuration parameters associated with device-to-device data transmission between wireless user devices;   determining, by the wireless user device, a device-to-device data allocation period, wherein the device-to-device data allocation period comprises a pool of time resources;   based on a pattern derived from a basic pattern using a modulo operation, selecting device-to-device data transmission time resources from among the pool of time resources, wherein the pattern comprises a first part of the basic pattern, wherein a quantity of the first part of the basic pattern in the pattern is greater than a quantity of a second part of the basic pattern in the pattern, and wherein the pattern is derived by:
 repeating the basic pattern; and 
 adding the first part of the basic pattern to the repeated basic patterns; and 
   transmitting, based on the selected device-to-device data transmission time resources, data from the wireless user device to a second wireless user device.   
     
     
         2 . The method of  claim 1 , wherein a quantity of time resources in the pool of time resources is greater than a length of the basic pattern, and
 wherein a length of the pattern corresponds to the quantity of time resources in the pool of time resources.   
     
     
         3 . The method of  claim 1 , wherein:
 the pattern comprises the first part of the basic pattern at two ends of the pattern.   
     
     
         4 . The method of  claim 1 , wherein:
 in the basic pattern, the first part of the basic pattern precedes the second part of the basic pattern.   
     
     
         5 . The method of  claim 1 , further comprising determining, based on a quantity of time resources in the pool of time resources and based on a length of the basic pattern, a length of the first part of the basic pattern. 
     
     
         6 . The method of  claim 1 , wherein the selecting the device-to-device data transmission time resources is based on:
 discarding, after applying the added first part of the basic pattern, the second part of the basic pattern.   
     
     
         7 . A wireless user device comprising:
 a wireless transceiver comprising an antenna and configured to:
 receive one or more configuration parameters associated with device-to-device data transmission between wireless user devices; and 
   one or more processors configured to:
 determine a device-to-device data allocation period, wherein the device-to-device data allocation period comprises a pool of time resources; and 
 based on a pattern derived from a basic pattern using a modulo operation, select device-to-device data transmission time resources from among the pool of time resources, wherein the pattern comprises a first part of the basic pattern, wherein a quantity of the first part of the basic pattern in the pattern is greater than a quantity of a second part of the basic pattern in the pattern, and wherein the pattern is derived by:
 repeating the basic pattern; and 
 adding the first part of the basic pattern to the repeated basic patterns, and 
 
   wherein the wireless transceiver transmits, based on the selected device-to-device data transmission time resources, data to a second wireless user device.   
     
     
         8 . The wireless user device of  claim 7 , wherein a quantity of time resources in the pool of time resources is greater than a length of the basic pattern, and
 wherein a length of the pattern corresponds to the quantity of time resources in the pool of time resources.   
     
     
         9 . The wireless user device of  claim 7 , wherein:
 the pattern comprises the first part of the basic pattern at two ends of the pattern.   
     
     
         10 . The wireless user device of  claim 7 , wherein:
 in the basic pattern, the first part of the basic pattern precedes the second part of the basic pattern.   
     
     
         11 . The wireless user device of  claim 7 , wherein the one or more processors is configured to determine, based on a quantity of time resources in the pool of time resources and based on a length of the basic pattern, a length of the first part of the basic pattern. 
     
     
         12 . The wireless user device of  claim 7 , wherein the one or more processors is configured to discard, after applying the added first part of the basic pattern, the second part of the basic pattern. 
     
     
         13 . A system comprising:
 a base station configured to transmit one or more configuration parameters associated with device-to-device data transmission between wireless user devices; and   a wireless user device configured to:
 receive, via an antenna and from the base station, the one or more configuration parameters; 
 determine a device-to-device data allocation period, wherein the device-to-device data allocation period comprises a pool of time resources; 
 based on a pattern derived from a basic pattern using a modulo operation, select device-to-device data transmission time resources from among the pool of time resources, wherein the pattern comprises a first part of the basic pattern, wherein a quantity of the first part of the basic pattern in the pattern is greater than a quantity of a second part of the basic pattern in the pattern, and wherein the pattern is derived by:
 repeating the basic pattern; and 
 adding the first part of the basic pattern to the repeated basic patterns; and 
 
 transmit, based on the selected device-to-device data transmission time resources, data to a second wireless user device. 
   
     
     
         14 . The system of  claim 13 , wherein a quantity of time resources in the pool of time resources is greater than a length of the basic pattern, and
 wherein a length of the pattern corresponds to the quantity of time resources in the pool of time resources.   
     
     
         15 . The system of  claim 13 , wherein:
 the pattern comprises the first part of the basic pattern at two ends of the pattern.   
     
     
         16 . The system of  claim 13 , wherein:
 in the basic pattern, the first part of the basic pattern precedes the second part of the basic pattern.   
     
     
         17 . The system of  claim 13 , wherein the wireless user device is configured to determine, based on a quantity of time resources in the pool of time resources and based on a length of the basic pattern, a length of the first part of the basic pattern. 
     
     
         18 . The system of  claim 13 , wherein the wireless user device is configured to discard, after applying the added first part of the basic pattern, the second part of the basic pattern. 
     
     
         19 . The system of  claim 13 , wherein the wireless user device is configured to receive second data from the second wireless user device. 
     
     
         20 . The system of  claim 13 , wherein the wireless user device is configured to transmit uplink data to the base station.