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Method and device for verifying decoding of shared information channel of high-speed downlink shared channel

A shared information channel and shared channel technology, which is applied in the field of shared information channel decoding for checking high-speed downlink shared channels, and can solve problems such as uncertain factors, failure to judge HS-SICH decoding results, and no bearer.

Active Publication Date: 2013-06-05
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The HS-SICH channel is an uplink control channel, so its decoding result can be used to detect the state of uplink synchronization. However, the HS-SICH does not carry a cyclic redundancy check (CRC, Cyclic Redundancy Check) code. The CRC code is used to judge whether the HS-SICH decoding result is correct or not. Therefore, there is currently no method to judge whether the HS-SICH decoding result is correct, which brings uncertain factors to the auxiliary control using the HS-SICH decoding result in HSPA+.

Method used

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  • Method and device for verifying decoding of shared information channel of high-speed downlink shared channel
  • Method and device for verifying decoding of shared information channel of high-speed downlink shared channel
  • Method and device for verifying decoding of shared information channel of high-speed downlink shared channel

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Embodiment 1

[0034] Example 1, see image 3 :

[0035] Step 301: Node B decodes HS-SICH to obtain RTBS. During the data transmission process of HSDPA, the CQI information fed back by HS-SICH includes: RTBS ​​and RMF, and both RTBS ​​and RMF are expressed in the form of index values ​​through the CQI mapping table stored by the UE. In the embodiment of the present invention, the index value of RTBS ​​can be The value is 0 to 63, represented by 6 bits; the index value of the RMF can be represented by 1 bit, "1" represents 16QAM, and "0" represents QPSK or 64QAM. In the encoding process of the HS-SICH in the embodiment of the present invention, the Reed Muller encoding method can be used for the RTBS, and the repetition encoding method can be used for the RMF.

[0036] The RTBS ​​mapping table is obtained according to the UE's wireless access capability, and different UE capabilities correspond to different transport block size tables.

[0037] Step 302: The Node B calculates and obtains t...

Embodiment 2

[0045] Example 2, see Figure 4 :

[0046] Step 401: The Node B receives the HS-SICH of the UE, decodes it to obtain RTBS ​​and RMF, which are expressed in the form of index values.

[0047] Step 402: Node B judges whether the RMF in step 401 is "1", and when RMF=1, executes step 403, otherwise executes step 405.

[0048] Step 403: The Node B calculates the minimum transport block size and the maximum transport block size corresponding to the 16QAM modulation method according to the physical resources allocated by the Node B to the UE and the 16QAM modulation method. And the minimum transport block size index value and the maximum transport block size index value corresponding to the minimum transport block size and the maximum transport block size are respectively obtained according to the transport block size table mapping.

[0049] Here, Node B can also be calculated according to the formula (1) and the minimum transmission block size is TBS min_16QAM and a maximum trans...

Embodiment 3

[0062] Implementation 3, combining Embodiment 1 and Embodiment 2 to verify the HS-SICH decoding result, see Figure 5 :

[0063] Step 501: Node B receives the HS-SICH of UE, decodes it to obtain RTBS ​​and RMF.

[0064] Step 502: Node B calculates and obtains the largest transport block size according to the physical resources allocated by Node B to the UE, and its corresponding index value is Index max_AllocatedResouce .

[0065] Step 503: the RTBS ​​and Index obtained in step 501 max_AllocatedResouce For comparison, when Index max_AllocatedResouce

[0066] Step 504: Node B judges whether the RMF in step 501 is "1", and when RMF=1, executes step 505, otherwise executes step 507.

[0067] Step 505: The Node B calculates the minimum transport block size and the maximum transport block size corresponding to the 16QAM modulation method according to the physical resources allocated by the Node B to the UE and the 16QAM modulati...

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Abstract

The invention discloses a method for verifying the decoding of a shared information channel (HS-SICH) of a high-speed downlink shared channel, which is used for judging whether the decoding result of the HS-SICH goes wrong or not. The method comprises the following steps: decoding the HS-SICH to obtain channel quality instruction (CQI) information; and judging whether the decoding of the HS-SICH goes wrong according to the CQI information. The invention also discloses a device for verifying the decoding of the HS-SICH.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a method and device for checking shared information channel decoding of a high-speed downlink shared channel. Background technique [0002] High Speed ​​Downlink Packet Access (HSDPA, HighSpeed ​​Downlink Packet Access) technology is a downlink enhancement scheme proposed by the third generation partnership project version 5 (3GPP Release5, 3rd Generation Partnership Project), and is applicable to wideband code division multiple access ( WCDMA, Wideband Code Division Multiple Access) and Time Division Synchronous Code Division Multiple Access (TD-SCDMA, Time Division-Synchronous Code Division Multiple Access) system. The main goal of HSDPA is to support high-speed packet data services, and to obtain lower time delay, higher system throughput capacity and stronger service quality (QoS, Quality of Service) guarantee in the case of high data transmission rate requirements . ...

Claims

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Application Information

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IPC IPC(8): H04L1/00H04L29/08
Inventor 贾民丽李晓卡
Owner DATANG MOBILE COMM EQUIP CO LTD