APPARATUS AND METHOD FOR TRANSMITTING D2D DATA BASED ON RESOURCE PATTERN
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.
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.