Method and system for handling device to device (d2d) communication

Patent metadata

Field	Value
Publication number	US-2016112910-A1
Application number	US-201514886665-A
Country	US
Kind code	A1
Filing date	Oct 19, 2015
Priority date	Oct 17, 2014
Publication date	Apr 21, 2016
Grant date	—

Abstract

A system and a method for a base station to reduce signaling overhead in device-to-device (D2D) communication are provided. The method includes a list of one or more destination identities (IDs) in a signaling message from at least one of UE and source base station, receiving a destination index in a buffer status report (BSR) from UE to request dedicated resources for transmitting D2D communication packets to a destination, determining the destination ID corresponding to destination index received in the BSR using the list of one or more destination IDs received from at least one of UE and source base station wherein the destination index is the index of destination ID in the list of destination IDs received, and allocating resources to the UE based on the determined destination ID.

First claim

What is claimed is:

1 . A method for reducing signaling overhead in device-to-device (D2D) communication by a terminal, the method comprising:
identifying a destination information list, the destination information list including a sequence of a destination identity for which the terminal requests to assign resources to be used for D2D communication; generating a terminal information message including the destination information list; and transmitting the terminal information message to a base station.

2 . The method of claim 1 , further comprising:
identifying a destination identity for D2D communication among the sequence of the destination identity, if a buffer state report is triggered; determining a destination index corresponding to the identified destination identity based on the destination information list; and transmitting a buffer state report message including the destination index to the base station.

3 . The method of claim 2 ,
wherein the destination index is used to allocate resources to the terminal.

4 . The method of claim 2 ,
wherein the terminal information message including the destination information list is transmitted from the base station to a target base station, if a handover is triggered.

5 . The method of claim 2 ,
wherein a length of the destination index is 4 bits, and a length of the destination identity is 24 bits.

6 . A method for reducing signaling overhead in device-to-device (D2D) communication by a base station, the method comprising:
receiving a terminal information message including a destination information list from a terminal, the destination information list including a sequence of a destination identity for which the terminal requests to assign resources to be used for D2D communication; receiving, if a buffer state report is triggered, a buffer state report message including a destination index determined based on the destination information list, from the terminal; and allocating resources to the terminal based on the destination index.

7 . The method of claim 6 ,
wherein a destination identity for D2D communication is identified among the sequence of the destination identity, and wherein the destination index corresponds to the identified destination identity based on the destination information list.

8 . The method of claim 7 , further comprising:
transmitting the terminal information message to a target base station, if a handover is triggered.

9 . The method of claim 7 ,
wherein a length of the destination index is 4 bits.

10 . The method of claim 7 ,
wherein a length of the destination identity is 24 bits.

11 . A terminal for reducing signaling overhead in device-to-device (D2D) communication, the terminal comprising:
a transceiver for transmitting and receiving a signal; and a controller configured to:
identify a destination information list, the destination information list including a sequence of a destination identity for which the terminal requests to assign resources to be used for D2D communication,
generate a terminal information message including the destination information list, and
transmit the terminal information message to a base station.

12 . The terminal of claim 11 , wherein the controller is further configured to:
identify a destination identity for D2D communication among the sequence of the destination identity, if a buffer state report is triggered, determine a destination index corresponding to the identified destination identity based on the destination information list, and transmit a buffer state report message including the destination index to the base station.

13 . The terminal of claim 12 ,
wherein the destination index is used to allocate resources to the terminal.

14 . The terminal of claim 12 ,
wherein the terminal information message including the destination information list is transmitted from the base station to a target base station, if a handover is triggered.

15 . The terminal of claim 12 ,
wherein a length of the destination index is 4 bits, and a length of the destination identity is 24 bits.

16 . A base station for reducing signaling overhead in device-to-device (D2D) communication, the base station comprising:
a transceiver for transmitting and receiving a signal; and a controller configured to:
receive a terminal information message including destination information list from a terminal, the destination information list including a sequence of a destination identity for which the terminal requests to assign resources to be used for D2D communication,
receive, if a buffer state report is triggered, a buffer state report message including a destination index determined based on the destination information list, from the terminal, and
allocate resources to the terminal based on the destination index.

17 . The base station of claim 16 ,
wherein a destination identity for D2D communication is identified among the sequence of the destination identity, and wherein the destination index corresponds to the identified destination identity based on the destination information list.

18 . The base station of claim 17 , wherein the controller is further configured to transmit the terminal information message to a target base station, if a handover is triggered.

19 . The base station of claim 17 ,
wherein a length of the destination index is 4 bits.

20 . The base station of claim 17 ,
wherein a length of the destination identity is 24 bits.

Assignees

• Samsung Electronics Co Ltd

Inventors

• Agiwal Anil
• Chang Youngbin

Classifications

• H04W72/04 Primary

  Wireless resource allocation · CPC title

• H04W76/14

  Direct-mode setup · CPC title

• H04W36/0094 Primary

  Definition of hand-off measurement parameters · CPC title

• H04W36/033

  in pre-organised networks · CPC title