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Transmission method and apparatus for code on uplink control channel

A technology of control channels and transmission methods, applied in multi-frequency code systems, communication between multiple stations, etc. Interference, to achieve the effect of randomization of interference

Inactive Publication Date: 2009-07-15
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this structure, in some cases, such as high-speed mobile, large multipath delay expansion, power imbalance, etc., due to the destruction of the orthogonality between OCs and CSs, some uplink control The interference between channels is relatively large
By transmitting the code of the uplink control channel in the next time slot of a subframe, there is still relatively large interference in the next time slot. The problem of large interference on the gap

Method used

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  • Transmission method and apparatus for code on uplink control channel
  • Transmission method and apparatus for code on uplink control channel
  • Transmission method and apparatus for code on uplink control channel

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Experimental program
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no. 4 approach

[0110] The fourth embodiment of the present invention includes the following steps:

[0111] Step 1, divide all uplink control channels into at least two uplink control channel groups according to the code mapped in the first time slot;

[0112] Step 2, remapping the inter-block spreading code OC of the uplink control channel in the at least two uplink control channel groups, so that any two of the uplink control channel groups exchange the inter-block spreading code;

[0113] Step 3, performing interleaving processing on the uplink control channels in each group to obtain the codes of each uplink control channel;

[0114] Step 4, transmit the obtained codes of each uplink control channel in the second time slot.

[0115] The specific implementation of the fourth real-time mode is described in detail below,

[0116] Step 1, divide all uplink control channels into k uplink control channel groups according to the code mapped in the first time slot, wherein k is 2 or 3;

[011...

Embodiment 1

[0125]Embodiment 1, N=18 codes (CS / OC combinations) available for uplink control channels are shown in Table 9:

[0126] Table 9

[0127]

[0128] Among them, if k=3, n=3, m=1, the following table can be obtained from formula 1

[0129] 1

0

1

2

3

4

5

6

7

8 9 10 11 12 13 14 15 16 17 g(i) 8 11 7 10 6 9 2 5 1 4 0 3 14 17 13 16 12 15

[0130] That is, if a control channel is mapped to code (CS / OC combination) 0 in the above table in the first time slot, then it is remapped to the code in the above table (CS / OC combination) in the second time slot 8, and so on.

[0131] The CS / OC mapping relationship of the 18 uplink control channels on the first block of each of the two time slots is shown in Table 10, where the code on the first block of the first time slot is on the left (CS / OC combination) , the right side is the code on the first block of the second slot (CS / OC combination)...

Embodiment 2

[0163] Embodiment 2, N=12 codes (CS / OC combinations) available for uplink control channels are shown in Table 16 below:

[0164] Table 16

[0165]

[0166] If k=2, n=3, m=1, the following table can be obtained from formula 1:

[0167] i 0 1 2 3 4 5 6 7 8 9 10 11 g(i,) 8 11 7 10 6 9 2 5 1 4 0 3

[0168] That is, if a control channel is mapped to code (CS / OC combination) 0 in the above table in the first time slot, then it is remapped to the code in the above table (CS / OC combination) in the second time slot 8, and so on.

[0169] The CS / OC mapping relationship of the 18 uplink control channels on the first block of the two time slots is shown in Table 17 below, where the code on the first block of the first time slot is on the left (CS / OC combination) , the right side is the code on the first block of the second slot (CS / OC combination):

[0170] Table 17

[0171]

[0172] As can be seen from Table 17, the mapping method impl...

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Abstract

The invention discloses an ascending control channel codes transmitting method and a device thereof. The method comprises dividing all the ascending control channels into three ascending control channel groups according to mapped codes in a first time slot; re-mapping the block-wise spreading codes OC in an ascending control channel of the three ascending control channel groups; performing an interleaving process to ascending control channels in each group respectively; transmitting the obtained codes in each ascending control channel in the second time slot. Therefore, UE having bigger mutual interference of ascending control channels in the first time slot has smaller mutual interference in the other time slot, interference randomization can be realized, and strong interference to the ascending control channel of certain UE in the two continuing time slots by the UE having bigger power can be avoided.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a code transmission method and device of an uplink control channel. Background technique [0002] In an existing wireless communication system using Orthogonal Frequency Division Multiplexing (OFDM), a base station allocates or reserves one or more common time-frequency resources for uplink control channels of multiple user terminals (UEs). In a subframe, uplink control channels of multiple user terminals can be code-division multiplexed on a common time-frequency resource, and the uplink control channels of different user terminals are distinguished by different codes. [0003] figure 1 It is a schematic diagram of a time-frequency resource structure of an uplink control channel. A common time-frequency resource occupies one sub-frame (sub-frame) in the time domain, and occupies multiple sub-carriers in the frequency domain. Wherein, one subframe may be ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/26H04B7/26
Inventor 王向华赵盟
Owner HUAWEI TECH CO LTD
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