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A method, system and device for data communication

A data communication and data technology, which is applied in wireless communication, connection management, electrical components, etc., can solve the problems of inability to manage D2D communication in a unified way and low resource utilization rate, so as to reduce overall interference and improve throughput , The effect of improving resource utilization

Active Publication Date: 2019-04-02
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] Embodiments of the present invention provide a method, system, and device for data communication to solve the problem in the prior art that the network side cannot perform unified management on D2D communication, resulting in low resource utilization.

Method used

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  • A method, system and device for data communication
  • A method, system and device for data communication
  • A method, system and device for data communication

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0419] The shared resource scheduling information in the cell is scrambled, that is, all user equipments in a cell correspond to the same one or more special radio temporary identifiers.

[0420] Wherein, the resource scheduling information shared in the cell is scrambled, which may be a system default, such as specified in a standard protocol; the network side device may also notify the user equipment through a broadcast message.

[0421] In an implementation, the special radio temporary identifier for scrambling in this embodiment may be a B-RNTI used for D2D dynamic broadcast transmission scheduling and / or an SPS-RNTI used for D2D semi-static broadcast transmission scheduling.

[0422] When the UE wants to send D2D broadcast communication data to surrounding UEs, it needs to report the request and / or the amount of data it needs to transmit to the network. The network schedules D2D communication resources for the UE. After receiving the resource, the UE sends D2D broadcast ...

example 2

[0449] A group of UEs uses one or more dedicated RNTIs. That is, all first user equipments in a user equipment group correspond to the same one or more special wireless temporary identifiers.

[0450] When a group of UEs in a cell use one or more dedicated RNTIs to indicate the scheduling of D2D broadcast communication, the eNB informs the UE of the UE group to join and the configuration for the group (such as the group identifier) ​​through dedicated signaling. The corresponding special radio temporary identifier (such as G-RNTI (Group RNTI) and / or SPS-RNTI). Preferably, the identity of the UE in the group may also be notified, so as to distinguish different UEs during scheduling.

[0451] For receiving UEs, it can be divided into restricted (Restricted) joining and open (Open) joining. The former requires the network to authenticate the joining receiving UEs. Only UEs that have successfully authenticated will notify the group configuration. Order process; if it is Open, UE...

example 3

[0501] Each sending UE uses one or more dedicated RNTIs, that is, each user equipment corresponds to one or more special radio temporary identifiers.

[0502] When each sending UE uses one or more dedicated RNTIs in the cell, for the sending UE, the eNB informs the UE through dedicated signaling that the configuration for the UE, such as the special radio temporary identifier corresponding to the sending UE (such as D-RNTI (D2D RNTI) and / or SPS-RNTI).

[0503] For the receiving UE, use the special radio temporary identifier (such as D-RNTI (D2DRNTI) and / or SPS-RNTI) that it can obtain to analyze the data, and if the decoding is successful, it is considered that the D2D broadcast reception is completed.

[0504] Specific steps are as follows:

[0505] Step 1: Sending UEs (referring to UEs that have D2D broadcast communication capabilities and want to transmit D2D broadcast communication data), before sending D2D broadcast communication data, need to enter the connection state,...

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Abstract

The embodiment of the invention relates to the technical field of wireless communication and particularly relates to a method, system and device for carrying out data communication so as to solve a problem, which exists in the prior art, that a network side is incapable of unified management of D2D communication so that resource utilization rate is not high. The method includes the following steps: after sending of D2D data is needed by first UE, a network side device determines special wireless temporary identifiers used by the first UE and the determined special wireless temporary identifiers are adopted to carry out scrambling on resource scheduling information corresponding to D2D communication resources which need to be allocated to the first UE; and broadcasting the scrambled resource scheduling information. Through adoption of the scheme, it is realized that the network side carries out unified management on D2D communication so that the resource utilization rate is improved; and furthermore, because the network side carries out unified management on the D2D communication, overall interference reduction and throughput capacity improvement are facilitated.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a method, system and equipment for data communication. Background technique [0002] In the LTE (Long Term Evolution, long-term evolution) system, the network centralized control method is adopted, that is, the uplink and downlink data of UE (User Equipment) are all sent and received under the control of the network. Communication between UEs is forwarded and controlled by the network. There is no direct communication link between UEs, and UEs are not allowed to send uplink data by themselves, such as figure 1 shown. [0003] D2D (Device-to-Device), that is, user equipment direct technology, refers to the way that adjacent user equipment can transmit data through a direct link within a short distance without forwarding through a central node (ie, a base station). Such as figure 2 shown. The short-distance communication characteristics and direct commu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W24/02
CPCH04W72/0466H04W72/12H04W76/11H04W76/14H04W76/40
Inventor 刘佳敏张惠英
Owner DATANG MOBILE COMM EQUIP CO LTD
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