Contention-based uplink access method, device and system

A technology of contention access and access method, which is applied in the field of device and system, contention-based uplink access method, and can solve the problems of inability to complete uplink channel estimation, increase of data packet transmission delay, and inability to simultaneously process multiple user data packets Detection and other issues to achieve the effect of reducing complexity, reducing transmission delay, and improving performance

Inactive Publication Date: 2016-12-14
NTT DOCOMO INC
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AI Technical Summary

Problems solved by technology

Since the uplink data packets that collide all use the same uplink reference signal, the base station cannot complete the estimation of the uplink channels of different UEs, so it cannot detect multiple user data packets at the same time
At this time, these UEs need to retransmit the collided data packets, which will greatly increase the transmission delay of the data packets

Method used

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  • Contention-based uplink access method, device and system
  • Contention-based uplink access method, device and system
  • Contention-based uplink access method, device and system

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Embodiment Construction

[0050] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples.

[0051] In order to solve the problem of possible collision of uplink data packets of multiple UEs during the uplink access process, the embodiment of the present invention provides a contention-based uplink access method, which can pass a license in an explicit way Provide one or more uplink access opportunities for the UE, so as to improve the success rate of the UE uplink access when multiple UEs have data to be sent at the same time, thereby improving the performance of the UE uplink access. figure 2 It shows the process of implementing the contention-based uplink access method. Such as figure 2 As shown, the method mainly includes:

[0052] Step 201: Define at least one uplink access mode selectable by the UE and determine an index corresponding...

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Abstract

The present invention discloses a contention-based uplink access method, device and system, wherein the method includes: defining at least one uplink access mode that a UE can select, and establishing an index corresponding to the at least one uplink access mode ; Determine the identification (CB-RNTI) used for contention access; determine the uplink access mode used by the uplink access UE involved; the base station sends the contention access permission signaling identified by CB-RNTI on the downlink control channel, and notifies The index corresponding to the uplink access mode used by the UE; and the UE monitors the contention access grant signaling in the downlink control channel through the CB-RNTI. If the contention access grant signaling is monitored and there is data to be sent, the contention The index of the uplink access mode carried in the access permission signaling determines the uplink access mode adopted for the uplink access. The method and system of the invention can effectively reduce the transmission delay of data packets.

Description

technical field [0001] The present invention relates to wireless communication technology, in particular to a contention-based uplink access method, device and system. Background technique [0002] Cellular mobile phones have brought great convenience to people's communication. The second generation Global System for Mobile Communication (GSM, Global System for Mobile Communication) adopts digital communication technology to further improve the call quality of mobile communication. The 3rd Generation Partnership Project (3GPP, 3rd Generation Partnership Project), as an important organization in the field of mobile communication, has greatly promoted the standardization of the 3rd generation mobile communication technology (3G, The Third Generation), and formulated a series of broadband codes including Communication system specifications including Wide Code Division Multiple Access (WCDMA), High Speed ​​Downlink Packet Access (HSDPA, High Speed ​​Downlink Packet Access), and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W74/08
Inventor 李安新闫渊高新颖加山英俊原田笃须田博人
Owner NTT DOCOMO INC
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