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Rank determining method, rank sending method and device

A determination method and a technology for sending channels, applied in the field of communication, can solve problems such as prone to errors and system performance deterioration, and achieve the effect of improving accuracy and system performance

Active Publication Date: 2016-11-30
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides a rank determination method, a rank transmission method and a device, so as to solve the problem that the existing NB is prone to make mistakes when determining the rank, which leads to the deterioration of system performance

Method used

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  • Rank determining method, rank sending method and device
  • Rank determining method, rank sending method and device
  • Rank determining method, rank sending method and device

Examples

Experimental program
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no. 1 example

[0039] see figure 2 , is the flow chart of the first embodiment of the rank determination method of the present invention:

[0040] Step 201: The NB receives the channel sent by the UE.

[0041] In this embodiment, when the rank is rank1, the UE can transmit the primary E-DPCCH, primary E-DPDCH, and secondary DPCCH during initial transmission and retransmission, and can also transmit primary E-DPDCH, secondary E- DPCCH and secondary DPCCH; when the rank is rank2, the physical channels transmitted by the UE during initial transmission and retransmission include primary E-DPCCH, secondary E-DPCCH, primary E-DPDCH, secondary E-DPDCH and secondary DPCCH.

[0042]Step 202: Determine the rank used by the UE according to the received rank indication information carried on at least one of the channels.

[0043] Regardless of whether the UE uses rank1 or rank2, its uplink transmission channel includes the secondary DPCCH, so the secondary DPCCH can be used to carry the rank indicati...

no. 1 example

[0136] see Figure 9A ,for Figure 8 The block diagram of the first embodiment of the determination unit, the embodiment of the determination unit may correspond to the second embodiment of the aforementioned rank determination method:

[0137] The determining unit 820 includes:

[0138] The rank indication acquisition subunit 821 is configured to acquire the rank indication information carried by the non-pilot bit on the secondary DPCCH in the channel received by the receiving unit 810, and the rank indication information indicates different ranks through different bit values ;

[0139] The demodulation determination subunit 822 is configured to demodulate the rank indication information acquired by the rank indication acquisition subunit 821, and determine the rank used by the UE according to the demodulation result.

[0140] see Figure 9B ,for Figure 8 The block diagram of the second embodiment of the determination unit, the embodiment of the determination unit may c...

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Abstract

The embodiment of the present invention discloses a rank determination method, a rank sending method and a device. The rank determination method includes: receiving a channel sent by a user equipment UE; and according to the rank indication information carried on at least one of the received channels , to determine the rank used by the UE. In the embodiment of the present invention, the UE carries the indicator information of the used rank on at least one transmitted channel, so that the NB can improve the accuracy of determining the rank according to the rank indicator information, thereby ensuring that the UE and the NB use the same rank for data decoding. to improve system performance.

Description

technical field [0001] The present invention relates to the technical field of communication, in particular to a rank (rank) determination method, a rank sending method and a device. Background technique [0002] In communication systems such as LTE (Long Term Evolution, Long Term Evolution), UMTS (Universal Mobile Telecommunications System, Universal Mobile Communications System) HSDPA (High Speed ​​Downlink Packet Access, High Speed ​​Downlink Packet Access), in order to increase the user peak rate, MIMO ( Multiple-Input Multiple-Output, multiple input multiple output) technology. In the communication system described above, rank is information on the number of uncorrelated channels that can be spatially distinguished. The NB (NodeB, base station) determines the rank according to the currently measured channel quality and the load on the network side, and then notifies the UE (UserEquipment, user equipment) of the rank through downlink signaling. The rank should be used b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L5/00H04L1/00
Inventor 赵悦莹马雪利
Owner HUAWEI TECH CO LTD