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

Transmission method, terminal, and base station of uplink control signaling

A transmission method and control signaling technology, which is applied to the transmission of base stations and uplink control signaling, and the field of terminals, which can solve the problems of system throughput performance degradation and the inability to judge whether UE has correctly received one or correctly received, etc.

Inactive Publication Date: 2015-08-12
ZTE CORP
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the UE configured to use channel selection to feed back ACK / NACK, if the current subframe also needs to send SR or CSI, if the TDD method in LTE is used, we can see from Table 1 that when the base station receives When b(0), b(1)=(1, 1), the base station will not be able to judge whether the UE has correctly received 1 or 4 PDSCHs
Therefore, from the perspective of system robustness, the base station will assume that only one PDSCH is received. Therefore, for the scenario where the UE correctly receives 4 PDSCHs, the base station will also retransmit, so the system throughput performance will decrease.

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
  • Transmission method, terminal, and base station of uplink control signaling
  • Transmission method, terminal, and base station of uplink control signaling
  • Transmission method, terminal, and base station of uplink control signaling

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0091] In a multi-carrier system with a large bandwidth, when the terminal needs to feed back the correct / wrong ACK / NACK response messages of the N physical downlink shared channels PDSCH, it can be transmitted in the following manner. The transmission process Figure 4 shown, including the following steps:

[0092] Step 100, according to the N ACK / NACK response messages that need to be fed back, determine a state information used to indicate the response of the configured carrier;

[0093] Among them, N is the sum of the PDSCH containing downlink allocation signaling and the PDSCH without downlink allocation signaling detected by the terminal, and the value of N is a positive integer; in the frequency division duplex system, 1<N≤5, in the time division duplex In the industrial system, 1<N≤20.

[0094] In this embodiment, the N ACK / NACK response messages may be determined as state information used to indicate the response for configuring the carrier in the following manner: ...

Embodiment 2

[0136]In this embodiment, in a multi-carrier system with a large bandwidth, the terminal performs a spatial logical AND operation on the ACK / NACK corresponding to the primary downlink component carrier in the ACK / NACK response messages of the N PDSCHs that need to be fed back, and performs a spatial logical AND operation on the other secondary downlink component The ACK / NACK corresponding to the carrier performs a spatial logical AND operation, and the ACK / NACK logical AND operation result corresponding to the primary downlink component carrier and the ACK / NACK logical AND operation result corresponding to the secondary downlink component carrier are determined as used to represent Configure the state information of the response of the carrier. Specifically, the status information is as follows:

[0137] state 1: {NACK, NACK};

[0138] State 2: {NACK, ACK};

[0139] State 3: {ACK, NACK};

[0140] State 4: {ACK, ACK};

[0141] In a preferred embodiment, the mapping relation...

Embodiment 3

[0151] This embodiment provides a transmission method for uplink control signaling. According to the ACK / NACK response messages of the N PDSCHs to be fed back, the terminal first determines the response result information used to indicate the configuration carrier response, and combines the determined response result information with the CSI , sent on the physical uplink control channel agreed with the base station.

[0152] Assume that the ACK / NACK response messages of N PDSCHs to be fed back occupy a total of M bits, CSI is periodic channel state information, and the number of periodic channel state information is Y, and the transmission bits of the physical uplink control channel agreed between the terminal and the base station are at most X bits; at this time, the terminal determines the response result information used to indicate the configuration carrier response according to the ACK / NACK response messages of the N PDSCHs to be fed back as follows:

[0153] The terminal...

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

Disclosed are a method, terminal and base station for transmitting uplink control signals. The transmitting method for uplink control signals comprises: the terminal determines the status information for expressing configuration carrier acknowledgment according to the correct / incorrect acknowledgment / negative acknowledgment (ACK / NACK) messages of N-number of physical downlink shared channels (PDSCH) to be fed back, maps the determined status information as 2-bit information according to the established mapping relation, and transmit the 2-bit information and other uplink control information on a physical uplink control channel agreed upon with the base station. At least one embodiment of the present invention can transmit multiple ACK / NACK messages and other uplink control information.

Description

technical field [0001] The invention relates to the field of digital communication, in particular to a terminal, a base station and a transmission technology of uplink control signaling in a multi-carrier system with a large bandwidth. Background technique [0002] The rapid development of digital communication systems puts forward higher requirements for the reliability of data communication. However, under harsh channels, especially in high data rate or high-speed mobile environments, serious problems such as multipath interference and Doppler shift affect system performance. Therefore, effective error control technology, especially Hybrid Automatic Repeat Request (HARQ) technology has become a research hotspot in the communication field. [0003] In the downlink HARQ of the long-term evolution system (LTE: Long Term Evolution), the ACK / NACK (ACK / NACK: Acknowledgment / Negative Acknowledgment) response message of the physical downlink shared channel (PDSCH: Physical Downlin...

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): H04L1/16
CPCH04L5/0055H04L1/0031H04L1/1861H04L1/1671H04L1/0026H04L5/0057
Inventor 梁春丽戴博喻斌杨维维
Owner ZTE CORP