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Encoding method and apparatus for multi-carrier time division duplex system service transmission channel

A technology for service transmission and channel coding, which is applied in the field of coding, coding or/and decoding devices for high-speed uplink packet access service transmission channels, and can solve the problem of low uplink data rate of TDD system, unobtainable TDD system, and inability of terminals to perform scheduling at the same time Issues such as transfers and unscheduled transfers

Inactive Publication Date: 2009-02-04
CHINA ACAD OF TELECOMM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the high-speed uplink packet data service transmission channel coding method defined in the prior art is aimed at the single-carrier HSUPA technology, resulting in a low uplink data rate of the TDD system, which cannot meet the growing needs of users and the emergence of new services
[0022] At the same time, the existing technology is aimed at the single-carrier HSUPA technology. Multiple E-UCCHs of the same user can only be transmitted on a single carrier, and the effect of frequency diversity cannot be obtained when multi-carrier transmission is performed, resulting in a low uplink data rate of the TDD system.
[0023] Similarly, for the single-carrier HSUPA technology in the prior art, there can only be one coded combination channel of the E-DCH type for each transmission time interval (TTI) of the same terminal. Considering the different characteristics of unscheduled transmission and scheduled transmission, the single In the same TTI on the carrier, the same terminal cannot perform scheduled transmission and non-scheduled transmission at the same time, resulting in low uplink data rate of the TDD system
[0024] In summary, the disadvantages of the prior art are: the prior art high-speed packet service transmission channel coding process is mainly aimed at the single-carrier TDD system, and cannot meet the needs of the multi-carrier TDD system
In addition, based on the current 3GPP protocol, for single-carrier HSUPA, multiple E-UCCHs of the same user can only be transmitted on a single carrier, and the frequency diversity effect of multi-carrier transmission cannot be obtained; similarly, a terminal with single-carrier capability Scheduled transmission and unscheduled transmission cannot be performed at the same time in the same TTI
The above shortcomings lead to the inability of the TDD system to obtain a higher peak rate of uplink data, and do not allow the concurrency of scheduled transmission services and non-scheduled transmission services

Method used

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  • Encoding method and apparatus for multi-carrier time division duplex system service transmission channel
  • Encoding method and apparatus for multi-carrier time division duplex system service transmission channel
  • Encoding method and apparatus for multi-carrier time division duplex system service transmission channel

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Embodiment 1

[0193] N in the flow of the first implementation scheme of the method of the present invention represents the number of carriers used for high-speed packet data transmission of the user terminal; M in the M-element constellation rearrangement includes 16 or 64. In this embodiment, a TDD system with three carriers is taken as an example for illustration, corresponding to figure 2 As shown, the implementation solution in this embodiment includes the following steps:

[0194] Step 201, the high-speed uplink data sending end device on the terminal side divides the data to be sent into three paths, and performs CRC addition, code block segmentation, channel coding, and physical layer HARQ functional module processing respectively.

[0195] Among them, when the transmitting end device on the terminal side with multi-carrier transmission capability uses multiple carriers to transmit data, within the same TTI, different carriers can perform scheduled transmission or non-scheduled tra...

Embodiment 2

[0225] N in the flow of the second implementation scheme of the method of the present invention represents the number of carriers used for high-speed packet data transmission of the user terminal; this embodiment takes a TDD system with three carriers as an example for illustration, corresponding to image 3 As shown, the implementation solution in this embodiment includes the following steps:

[0226] Step 301, the high-speed uplink data sending end device on the terminal side divides the data to be sent into three paths, and performs CRC addition, code block segmentation, channel coding, physical layer HARQ function, data scrambling, and data interleaving respectively.

[0227] Among them, when the transmitting end device on the terminal side with multi-carrier transmission capability uses multiple carriers to transmit data, within the same TTI, different carriers can perform scheduled transmission or non-scheduled transmission respectively, and can also carry data in differe...

Embodiment 3

[0247] The N in the process flow of the third implementation scheme of the method of the present invention represents the number of carriers used for the high-speed packet data transmission of the user terminal; this embodiment takes a TDD system with three carriers as an example for illustration, corresponding to Figure 4 As shown, the implementation solution in this embodiment includes the following steps:

[0248] Step 401, the high-speed uplink data sending end device on the terminal side uniformly performs CRC addition, code block segmentation, channel coding, physical layer HARQ function, and data scrambling processing on the data to be sent;

[0249] Step 402: Perform data interleaving processing on the data processed in step 401.

[0250] Wherein, the processing manners of data interleaving in step 402 in this embodiment may include the following three methods, but are not limited to these three methods.

[0251] The processing mode of the first kind of weaving data ...

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Abstract

The invention discloses three realization proposals of an encoding method of a multicarrier TDD system business transmission channel, wherein, one of the realization proposals comprises the following steps: sending end equipment divides data to be sent into N routes and respectively carries out CRC addition, code block segmentation, channel encoding and physical layer HARQ functional module processing; the N routes of processed data are combined into one route of data in sequence, and data scrambling processing is carried out uniformly; processed data is carried out with data intertwined processing; when a high-order modulation mode is adopted, the N routes of the processed data are carried out with M Yuan constellation rearrangement; the N routes of the processed data are respectively carried out with physical channel mapping, and at last the N routes of the data are respectively modulated to N carriers to be sent to receiving end equipment. The invention also discloses three realization proposals of an encoding or / and decoding device of the multicarrier TDD system business transmission channel, when the method and the device are adopted, uplink data rate of the TDD system can be greatly promoted.

Description

technical field [0001] The present invention relates to a coding technology of a service transmission channel, in particular to a coding method of a high-speed uplink packet access (HSUPA, High Speed ​​Uplink Packet Access) service transmission channel in a multi-carrier time division duplex (TDD, Time Division Duplex) system and Encoding or / and decoding means. Background technique [0002] In order to adapt to the development of mobile communication services, the Third Generation Partnership Project introduced HSUPA technology in the R6 / R7 protocol, and the adoption of HSUPA technology has significantly improved the packet data transmission rate of the uplink. For the TD-SCDMA system, as a system using TDD mode, the TD-SCDMA system has a limited transmission bandwidth of 1.6M and a chip rate of 1.28Mcps. Therefore, the peak data rate that single-carrier HSUPA technology can provide is limited, and HSUPA can only provide A single terminal provides up to 2.2Mbps uplink peak ...

Claims

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Application Information

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IPC IPC(8): H04L1/00H04L1/18
Inventor 朱向前周海军高卓
Owner CHINA ACAD OF TELECOMM TECH
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