US 10,834,627 B2 · Data transmission method and device in device to device communication

Abstract

Disclosed are a data transmission method and device for device to device (D2D) communication, the method comprising: determining D2D communication destinations corresponding to a user equipment (UE) of a transmitting end; allocating a corresponding resource for each D2D communication destination; according to the resource corresponding to each D2D communication destination, generating a medium access control protocol data unit (MAC PDU) corresponding to the D2D communication destinations, and transmitting the MAC PDUs using the resource corresponding to the D2D communication destinations. The present invention separately generates a MAC PDU for each D2D communication destination of a UE of a transmitting end, thus preventing the data from one device to different D2D communication destination devices from being multiplexed into one MAC PDU, further reducing header overhead of the MAC PDU and eliminating unnecessary blind detection of a device of a receiving end, thereby saving power.

Claims18

Dependent claims

A method for transmitting data in device to device communication, comprising:

determining Device to Device (D2D) communication destinations corresponding to a transmitting User Equipment (UE);
allocating a plurality of groups of resources each corresponding to a respective one of the D2D communication destinations;
and
generating, for each one of the D2D communication destinations, a media Access Control Protocol Data Unit (MAC PDU) according to a respective group of resources corresponding to the one of the D2D communication destinations;
carrying a D2D communication destination identifier corresponding to the one of the D2D communication destinations in a Media Access Control (MAC) sub-header or a Media Access Control Service Data Unit (MAC SDU) in the MAC PDU corresponding to the one of the D2D communication destinations;
and transmitting the MAC PDU over the respective group of resources;
wherein the D2D communication destination identifier comprises at least one of a group identifier, or a broadcast identifier.

4 more elements

An apparatus for transmitting data in device to device communication, comprising:

a processor;
a memory, wherein the memory stores one or more computer readable program codes, and the processor is configured to execute the computer readable program codes to:
determine Device to Device (D2D) communication destinations corresponding to a transmitting User Equipment (UE);
allocate a plurality of groups of resources each corresponding to a respective one of the D2D communication destinations;
and
generate, for each one of the D2D communication destinations, a media Access Control Protocol Data Unit (MAC PDU) according to a group of resources corresponding to the one of the D2D communication destinations;
carry a D2D communication destination identifier corresponding to the one of the D2D communication destinations in a Media Access Control (MAC) sub-header or a Media Access Control Service Data Unit (MAC SDU) in the MAC PDU corresponding to the one of the D2D communication destinations;
and transmit the MAC PDU over the respective group of resources;
wherein the D2D communication destination identifier comprises at least one of:
a group identifier, or a broadcast identifier.

7 more elements

Dependencies are inferred from the claim text.

Data transmission method and device in device to device communication

Life of this patent

Data transmission method and device in device to device communication

Life of this patent

Abstract

Claims18