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Method and equipment for transmitting uplink transmission information

A technology of transmission information and transmission method, which is applied in the field of transmission of uplink transmission information, and can solve problems such as interference, large amount of calculation of eNB, large resource overhead of long PRACH structure, etc., and achieve the effect of avoiding interference

Active Publication Date: 2011-04-27
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0018] (2) The main purpose of this allocation is that when an eNB controls multiple cells, if the PRACH time-frequency position in each cell is the same, then this will cause the eNB to calculate a lot in this subframe
The uplink random access preamble of the R-UE (the preamble includes figure 1 The transmission timing of the cyclic prefix CP and the sequence sequence) in the cyclic prefix is ​​aligned with the downlink timing of the R-UE. Considering the propagation delay delay2 of the RN and the R-UE, the arrival time of the uplink random access preamble sequence is delayed from the uplink receiving subframe of the RN ΔUD+2*delay2, if GT is less than the delay, it will cause interference to the receiving subframes behind RN, and at the same time affect the uplink random access of R-UE
[0023] In the prior art, a solution to the above problem is to configure a long PRACH structure, such as a 2ms or 3ms structure. The GT of this channel structure is relatively long, which may be able to solve this problem, but the resource overhead of the long PRACH structure is large, increasing operating costs

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  • Method and equipment for transmitting uplink transmission information
  • Method and equipment for transmitting uplink transmission information
  • Method and equipment for transmitting uplink transmission information

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Embodiment Construction

[0079] As described in the background, in the existing communication system with RN or other intermediate network equipment, because the uplink timing advance of UE (terminal served by RN or other intermediate network equipment) introduces the RN or other intermediate network equipment The uplink timing advance increases the UE's uplink timing advance, and because the sending timing of the UE's random access preamble is aligned with the downlink timing, if the GT in the configured preamble structure cannot provide sufficient protection time, the effective preamble It will fall outside the receiving window of the RN or other intermediate network equipment, which may cause interference to the reception of other subframes of the RN or other intermediate network equipment, and at the same time affect the uplink random access of the UE.

[0080] In view of the above problems, it can be solved by making the UE send the random access preamble sequence to the RN or other network equipm...

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Abstract

The embodiment of the invention discloses a method and equipment for transmitting uplink transmission information. Through the method and the equipment, a terminal regularly transmits the uplink transmission information to network equipment in advance, and the uplink transmission information can fall in a time window of a receiving sub frame of the network equipment when reaching the network equipment, so the uplink information transmission of the terminal is not affected, and meanwhile, interference to other receiving sub frames of the network equipment is also avoided.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method and device for sending uplink transmission information. Background technique [0002] The introduction of RN (Relay Node, relay node) makes the wireless link of the relay-based mobile communication system divided into three types: [0003] eNB-macro UE direct link (direct link) [0004] eNB-RN backhaul link (backhaul link) [0005] RN-relay UE access link (access link) [0006] Considering the signal interference limitation of wireless communication, the three links need to use orthogonal wireless resources. [0007] Since the transceiver of the relay node works in half time division duplex mode, the backhaul link and the access link occupy different time slots in the TDD (Time Division Duplexing, time division duplex) frame structure, but the direct link and the access link Backhaul links can coexist at the same time, as long as their time-frequency r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W56/00
Inventor 张文健潘学明沈祖康王立波
Owner DATANG MOBILE COMM EQUIP CO LTD
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