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Code channel selection method and device

A code channel and spread spectrum code technology, applied in the field of code channel selection method and device, can solve the problems of not using high-speed transmission, low transmission efficiency, optional code channels exceeding the allowable code channel range, etc.

Active Publication Date: 2015-11-25
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This scheme brings the following problems: the interference between symbols is large, and high-speed transmission is not used
Although this method can eliminate inter-signal interference, it results in some code channels being the same, which reduces the number of available code channels.
Furthermore, if the spreading codes of each E-DPDCH code channel specified in TS25.213 are used for code channel selection, the optional code channels may exceed the allowed code channel range, resulting in the UE being unable to support E-DCH transmission, resulting in Under the variable bandwidth chip zeroing operation, the uplink transmission efficiency is low

Method used

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  • Code channel selection method and device

Examples

Experimental program
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Embodiment 1

[0212] An embodiment of the present invention provides a code channel selection device 300, specifically as Figure 5 As shown, the code channel selection apparatus 500 includes: a first acquiring unit 501 , a first determining unit 502 , a second acquiring unit 503 , and a second determining unit 504 .

[0213] The first acquiring unit 501 is configured to acquire the bandwidth scaling factor and the number of bits of the first sequence of channel coding.

[0214] The first determining unit 502 is configured to determine, according to the bandwidth scaling factor obtained by the first obtaining unit 501, the number of bits of the first sequence of channel coding and the preconfigured first set, the The first number of bits, wherein the second sequence is an output sequence after performing rate matching on the first sequence of channel coding according to the bandwidth scaling factor.

[0215] The second acquiring unit 503 is configured to acquire first information of the se...

Embodiment 2

[0259] An embodiment of the present invention provides a code channel selection device 900, specifically as Figure 9 As shown, the apparatus 900 includes: a first acquiring unit 901 , a first determining unit 902 , a second acquiring unit 903 , and a second determining unit 904 .

[0260] The first acquiring unit 901 is configured to acquire a bandwidth scaling factor, a first set, and the number of bits of a first sequence of channel coding, wherein the first set is the second set corresponding to the bandwidth scaling factor Subset.

[0261] The first determining unit 902 is configured to determine the number of bits of the second sequence according to the number of bits of the first sequence of channel coding acquired by the first acquiring unit 901 and the first set, wherein the The second sequence is an output sequence after performing rate matching on the first sequence of channel coding.

[0262] The second obtaining unit 903 is configured to obtain first information...

Embodiment 3

[0281] An embodiment of the present invention provides a code channel selection method, specifically as Figure 10 shown, including:

[0282] 1001. The device for selecting a code channel acquires a bandwidth scaling factor and the number of bits of a first sequence of channel coding.

[0283] Specifically, in the code channel selection method provided by the embodiment of the present invention, the code channel selection device not only obtains the number of bits of the first sequence of channel coding, but also obtains the bandwidth scaling factor F in the narrowband filtering process.

[0284] It should be noted that neither the "first" in the first sequence nor the "second" in the second sequence below has any special meaning, and only refer to two different sequences, wherein the first One sequence is an output sequence after channel coding, and the second sequence is an output sequence after performing rate matching on the output sequence after channel coding.

[0285]...

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PUM

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Abstract

Provided are a code channel selection method and device, which can increase the uplink transmission efficiency during an operation where a variable bandwidth is set to zero. The method comprises: acquiring a bandwidth contraction-expansion factor and the bit number of a first sequence of channel coding; according to the bandwidth contraction-expansion factor, the bit number of the first sequence of the channel coding and a pre-set first set, determining the first bit number of a second sequence, wherein the second sequence is an output sequence after rate matching is conducted on the first sequence of the channel coding according to the bandwidth contraction-expansion factor; according to the first bit number of the second sequence, acquiring first information about the second sequence, wherein the first information comprises a first spectrum spreading factor of each code channel in at least one physical channel code channel corresponding to the second sequence; and according to the first spectrum spreading factor of each code channel and the bandwidth contraction-expansion factor, determining a spectrum spreading code corresponding to each code channel. The present invention is applied to the field of communications.

Description

technical field [0001] The present invention relates to the communication field, in particular to a code channel selection method and device. Background technique [0002] With the development of communication technology, in order to further optimize and evolve packet services, high-speed uplink packet access (HSUPA) technology was introduced into the 3rd Generation Partnership Project (3rdGeneration Partnership Project, 3GPP) Universal Mobile Telecommunications System (Universal Mobile Telecommunications System, UMTS) version 6 (Release6, Rel.6). [0003] In the prior art, after selecting a transmission block length, a terminal (User Equipment, UE) needs to code and multiplex the transmission block onto a physical channel. Among them, the code multiplexing process specifically includes: Cyclic Redundancy Code (CyclicRedundancyCode, CRC) addition, coding block segmentation, channel coding, physical layer hybrid automatic repeat request (HybridAutomaticRepeatRequest, HARQ) f...

Claims

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Application Information

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IPC IPC(8): A99Z99/00
CPCH04W16/00H04J13/16
Inventor 范叔炬汪凡马雪利
Owner HUAWEI TECH CO LTD
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