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Methods and devices for allocating uplink control resources and transmitting uplink control information

A technology of control information and line control, applied in the field of communication, can solve the problems of loss of transmit power, reliability of uplink control channel, loss of system efficiency, etc.

Active Publication Date: 2012-12-26
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the single-carrier characteristics are destroyed and multiple uplink control channels will share the total transmission power equally, there must be a certain loss in the transmission power on each uplink control channel, which will cause the problem of decreased reliability of the uplink control channel
On the other hand, if the combined or multiplexed feedback method used in the existing R8 TDD system is used, since the ACK / NACK information of different data blocks needs to be logically added, after any one of the multiple data blocks fails to receive , all data blocks involved in ACK / NACK merging must be retransmitted, so system efficiency will be lost

Method used

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  • Methods and devices for allocating uplink control resources and transmitting uplink control information
  • Methods and devices for allocating uplink control resources and transmitting uplink control information
  • Methods and devices for allocating uplink control resources and transmitting uplink control information

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Embodiment Construction

[0046] In the embodiment of the present invention, the base station configures the shift interval of the cyclic shift sequence for the terminal, the resource number used to feed back ACK / NACK, and the ACK / NACK feedback mode, wherein the ACK / NACK feedback mode is R8 feedback Mode, or truncated feedback mode; before the base station sends downlink data to the terminal side, the shift interval of the configured cyclic shift sequence, the resource number used to feed back ACK / NACK, and the ACK / NACK feedback mode sent to the terminal side.

[0047] After receiving the downlink data, the terminal side determines whether the OC needs to be truncated according to the number of bits of the ACK / NACK information to be fed back, and if necessary, uses the available spreading sequence to truncate the ACK / NACK information to be fed back The OC feedback mode is used for transmission in the uplink control channel.

[0048] see Figure 7 As shown, a method for configuring uplink control reso...

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Abstract

The invention discloses methods and devices for allocating uplink control resources and transmitting uplink control information. The method for transmitting uplink control information comprises that: a terminal acquires the shift interval of a cyclic shift sequence, the resource number for feeding an acknowledgment (ACK) / a negative acknowledgment (NACK) back and an ACK / NACK feedback mode; according to the shift interval of the cyclic shift sequence and the resource number for feeding ACK / NACK back, the terminal determines an available spread spectrum sequence for feeding the ACK / NACK back, wherein the spread spectrum sequence comprises a cyclic shift sequence and an orthogonal sequence; and after receiving downlink data, the terminal transmits the ACK / NACK information to be fed back in the ACK / NACK feedback mode in an uplink control channel by using the available spread spectrum sequence. Thus, the transmission of many pieces of ACK / NACK information in one uplink control channel is realized in a system for realizing long-term evolution multi-carrier aggregation.

Description

technical field [0001] The present invention relates to the field of communication technologies, in particular to a method and device for configuring uplink control resources and transmitting uplink control information. Background technique [0002] For the Long Term Evolution multi-carrier system, in order to support a wider system bandwidth than the Long Term Evolution (Long Term Evolution, LTE) system, such as 100MHz, one possibility is to directly allocate a spectrum with a bandwidth of 100M, such as figure 1 One possibility is to aggregate some spectrum allocated to the existing system to form a large bandwidth for the long-term evolution multi-carrier system, that is, users may occupy M≥1 carriers for downlink transmission, and N≥1 carriers For upstream transmission, such as figure 2 shown. [0003] The basic transmission scheme of the LTE system (R8 system) whose standardization work has been basically completed is as follows: a frequency division duplex (Frequency...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/16H04L1/18H04L27/26
Inventor 林亚男
Owner DATANG MOBILE COMM EQUIP CO LTD
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