Unlock instant, AI-driven research and patent intelligence for your innovation.

Method and system for optimizing multi-carrier systems

A multi-carrier system and optimization method technology, applied in the field of multi-carriers, can solve the problems of increased error probability, system performance reduction, and small workload, so as to improve codebook code distance, increase uplink data rate, and reduce storage requirements Effect

Inactive Publication Date: 2015-06-03
ZTE CORP
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Obviously, since the data field carrying the HARQ feedback information is 10 bits, when designing the codebook, the minimum code spacing can only be designed as 2, and cannot be larger
In this way, the probability of errors during transmission will be increased, and the performance of the system will be reduced. At the same time, it is not a small workload to design a good codebook with at least 80 codes.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method and system for optimizing multi-carrier systems
  • Method and system for optimizing multi-carrier systems
  • Method and system for optimizing multi-carrier systems

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0079] Embodiment 1, when it is set that the dual-carrier HSDPA system does not use MIMO for data transmission, the HARQ message that needs to be fed back is {A / A, A / N, N / A, A / D, D / A, N / N, D / D}.

[0080] In the present invention, when the four-carrier HSDPA system does not use MIMO for data transmission, the data receiver needs to feed back the HARQ information of 4 transmission blocks at most. Treat the four-carrier HSDPA system as two dual-carrier HSDPA systems. When a dual-carrier HSDPA system does not use MIMO, there are 9 types of HARQ information that need to be fed back according to the codebook in the prior art, namely {A / A, A / N, N / A, A / D, D / A, N / N, N / D, D / N, D / D}.

[0081] In this embodiment, the two kinds of information, N / D and D / N, are fed back according to N / N; or, N / D is fed back according to N / N, and D / N is fed back according to D / D; Or, feed back D / N as N / N, feed back N / D as D / D, and A / A, A / N, N / A, A / D, D / A, N / N, D / D These 7 kinds of information are norma...

Embodiment 2

[0089] Embodiment 2, when it is set that the dual-carrier HSDPA system does not use MIMO for data transmission, the HARQ message that needs to be fed back is {A / A, A / N, N / A, A / D, D / A, N / N, N / D}.

[0090] When a dual-carrier HSDPA system does not use MIMO, there are 9 types of HARQ information that need to be fed back according to the codebook in the prior art, namely {A / A, A / N, N / A, A / D, D / A, N / N, N / D, D / N, D / D}, in this embodiment, D / N and D / D are fed back according to N / D; or D / N is fed back according to N / N, The D / D is fed back according to N / D, and the resulting HARQ feedback information has only 7 types, namely {A / A, A / N, N / A, A / D, D / A, N / N, N / D}.

[0091] When using N / D to represent {N / D, D / N, D / D}, if the base station interprets the received N / D as N / D, at this time, interpret D / N or D / D as The error probability of N / D is 0.1%, which is within the allowable range of the system.

[0092] When N / D is used to represent {N / D, D / D}, and N / N is used to represent {N / N, D...

Embodiment 3

[0098] Embodiment 3: When the dual-carrier HSDPA system is set not to use MIMO for data transmission, the HARQ message to be fed back is {A / A, A / N, N / A, A / D, D / A, N / N, D / N}.

[0099] When a dual-carrier HSDPA system does not use MIMO, there are 9 types of HARQ information that need to be fed back according to the codebook in the prior art, namely {A / A, A / N, N / A, A / D, D / A, N / N, N / D, D / N, D / D}, in this embodiment, N / D and D / D are fed back according to D / N; or, N / D is fed back according to N / N , Feedback D / D according to D / N, and the resulting HARQ feedback information has only 7 kinds, namely {A / A, A / N, N / A, A / D, D / A, N / N, D / N}.

[0100] When using D / N to represent {N / D, D / N, D / D}, if the base station interprets the received D / N as D / N, at this time, interpret N / D or D / D as The error probability of D / N is 0.1%, which is within the allowable range of the system.

[0101] When D / N is used to represent {D / N, D / D}, and N / N is used to represent {N / N, N / D}, if the base station i...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method for optimizing multi-carrier systems. The method comprises the steps: the information of a hybrid automatic repeat quest (HARQ) to be fed back when multi-input and multi-output (MIMO) is not adopted in a double-carrier high speed downlink packet access (HSDPA) system is set into 7 types; the set HARQ information is mapped with the HARQ information to be fed back when the MIMO is adopted in a single-carrier HSDPA system; and based on the mapping, a codebook for feeding back HARQ information when the MIMO is not adopted in a four-carrier HSDPA system is generated according to a codebook for feeding back the HARQ information when the MIMO is adopted in the double-carrier HSDPA system. The invention also discloses device for optimizing the multi-carrier systems, and according to the invention, the four-carrier HSDPA system used for transmitting data without adoption of the MIMO can be optimized.

Description

technical field [0001] The present invention relates to multi-carrier technology, in particular to an optimization method and system for a multi-carrier system. Background technique [0002] High Speed ​​Downlink Packet Access (HSDPA, High Speed ​​Downlink Packet Access) is a technology proposed by the 3rd Generation Partnership Project (3GPP, 3rd Generation Partnership Project) in Release 5 (Release-5), which is used to improve downlink Direction (network to terminal) network data throughput, the designed downlink peak rate can reach 14.4Mbps. [0003] In terms of physical layer design, HSDPA uses a high-speed downlink shared physical channel (HS-PDSCH, High Speed-Physical Downlink Shared Channel) in the downlink direction to carry a high-speed downlink shared transport channel (HS-DSCH, High Speed-Downlink Shared Channel) At the same time, the high-speed shared control channel (HS-SCCH, High Speed-Shared Control Channel) is also used in the downlink direction, which is se...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H04W28/04H04L1/00H04L1/06H04L1/16
Inventor 刘俊强林树功陈冬雷周圆
Owner ZTE CORP