CN102571297A - Method for transmitting ACK (acknowledge character)/NACK (negative acknowledge character) and SR (scheduling request) simultaneously by LTE (long term evolution) uplink control channel - Google Patents
Method for transmitting ACK (acknowledge character)/NACK (negative acknowledge character) and SR (scheduling request) simultaneously by LTE (long term evolution) uplink control channel Download PDFInfo
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- CN102571297A CN102571297A CN201010588071XA CN201010588071A CN102571297A CN 102571297 A CN102571297 A CN 102571297A CN 201010588071X A CN201010588071X A CN 201010588071XA CN 201010588071 A CN201010588071 A CN 201010588071A CN 102571297 A CN102571297 A CN 102571297A
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Abstract
The invention relates to a method for transmitting ACK (acknowledge character)/NACK (negative acknowledge character) and SR (scheduling request) simultaneously an LTE (long term evolution) uplink control channel. The method comprises the steps of establishing a mapping relationship between the information bit of ACK/NACK and QPSK(quadrature phase shift keying) modulation symbols as well as uplink control channel resources, wherein in the mapping relationship, different information bit corresponds to different QPSK modulation symbols and/or different uplink control channel resources; mapping the QPSK modulation symbols corresponding to the information bit of the ACK/NACK to be transmitted onto the corresponding uplink control channel resource according to the mapping relationship; and modulating the scheduling requesting information on a pilot frequency symbol. The method of the invention can ensure that the information quantity of the ACK/NACK is not lost and realize the scheduling request and the multiplexing of the ACK/NACK while transmitting ACK/NACK information of more than 2 bits.
Description
Technical field
The present invention relates to the LTE communications field, particularly relate to the method for a kind of LTE ascending control channel transferring ACK/NACK.
Background technology
At present; Physical Uplink Control Channel PUCCH among the LTE has multiple form to be used for transmission; Send when wherein format 1b supports the dispatch request SR of ACK/NACK and 1 bit of 2 bits; Because the ascending control channel structure of ACK/NACK and dispatch request resource is identical, ACK/NACK can send on the dispatch request resource.Send simultaneously if any the dispatch request SR of 1 bit and the ACK/NACK of 2 bits; With ACK/NACK information through after the QPSK modulation; Through carrying out spread spectrum, be dispersed on a plurality of up symbols, each up symbol uses the ZC sequence; Obtain the sequence of complex numbers of 1 RB length, be mapped on the RB of the dispatch request SR ascending control channel that is distributed.
LTE will send the ACK/NACK feedback of a plurality of descending carriers in order to support carrier aggregation on the up sub-frame, be example with descending 2 carrier waves, and two code words of each carrier wave need 4 bit ACK/NACK feedback information at least.
If reuse the multiplexing method of LTE, need the ACK/NACK Information Compression be become 2 bits, because the SR resource is carried 2 bits at most.Therefore need to consider that a kind of method can guarantee the effective information of ACK/NACK, can realize the multiplexing of the two again.
Summary of the invention
To defective that exists in the prior art and deficiency, the present invention proposes a kind of LTE ascending control channel method of transferring ACK/NACK and SR simultaneously, can guarantee the effective information of ACK/NACK, can realize that again ACK/NACK and SR's is multiplexing.
To achieve these goals, the present invention proposes the method for a kind of LTE ascending control channel while transferring ACK/NACK and SR, and said method comprises:
Set up the mapping relations of information bit and QPSK modulation symbol and the uplink control channel resource of ACK/NACK, in said mapping relations, QPSK modulation symbol that different information bits is corresponding different and/or different uplink control channel resources;
According to said mapping relations, the corresponding QPSK modulation symbol of the information bit of the ACK/NACK that will send is mapped on the corresponding uplink control channel resource;
Dispatch request information is modulated on the frequency pilot sign.
Preferred as technique scheme, the information bit of said ACK/NACK is the 2-4 bit.
After adopting said method of the present invention, during more than the ACK/NACK information of 2bits, can guarantee that the amount of information of ACK/NACK is not lost, realize that again dispatch request and ACK/NACK's is multiplexing in transmission.
Below in conjunction with accompanying drawing, specific embodiments of the invention is done further to specify.For the person of ordinary skill in the field, from detailed description of the invention, above-mentioned and other purposes of the present invention, feature and advantage will be obvious.
Description of drawings
The LTE ascending control channel that Fig. 1 proposes for the present invention is the sketch map of the method for transferring ACK/NACK and SR simultaneously;
Fig. 2 is the sketch map of the mapping relations of specific embodiment among the present invention.
Embodiment
As shown in Figure 1, LTE ascending control channel while transferring ACK/NACK that the present invention proposes and the method for SR comprise:
Set up the mapping relations of information bit and QPSK modulation symbol and the uplink control channel resource of ACK/NACK, in said mapping relations, QPSK modulation symbol that different information bits is corresponding different and/or different uplink control channel resources;
According to said mapping relations, the corresponding QPSK modulation symbol of the information bit of the ACK/NACK that will send is mapped on the corresponding uplink control channel resource;
Dispatch request information is modulated on the frequency pilot sign.
The information bit of said ACK/NACK is 4 bits.
Below be the present invention's one specific embodiment:
4 bit ACK/nack message is used mapping method as shown in Figure 2, and wherein Bits representes ACK/NACK information, and CE# 0, CE# 1, CE# 2, CE# 3 represent 4 groups of different uplink control channel resources.
For example, if the information bit of 4 ACK/NACK is (1011), the qpsk modulation signal with-1-j is mapped on CE# 2 the channel, and the dispatch request information of 1 bit is modulated on the demodulation pilot frequency.
The present invention is according to the ACK/NACK bit that sends, with corresponding QPSK modulation symbol (1+j, 1-j ,-1+j ,-1-j) be mapped on the corresponding uplink control channel resource; Use different uplink control channel resources and different QPSK modulation symbols, reach the purpose of on a sub-frame of uplink, sending 4 bit informations; Simultaneously through dispatch request information being modulated on the frequency pilot sign transmission when realizing the two.
Though; The present invention clearly demonstrates through above embodiment and accompanying drawing thereof; Yet under the situation that does not deviate from spirit of the present invention and essence thereof; The person of ordinary skill in the field works as can make various corresponding variations and correction according to the present invention, but these corresponding variations and correction all should belong to the protection range of claim of the present invention.
Claims (2)
1. the LTE ascending control channel method of transferring ACK/NACK and SR simultaneously is characterized in that said method comprises:
Set up the mapping relations of information bit and QPSK modulation symbol and the uplink control channel resource of ACK/NACK, in said mapping relations, QPSK modulation symbol that different information bits is corresponding different and/or different uplink control channel resources;
According to said mapping relations, the corresponding QPSK modulation symbol of the information bit of the ACK/NACK that will send is mapped on the corresponding uplink control channel resource;
Dispatch request information is modulated on the frequency pilot sign.
2. the method for LTE ascending control channel while transferring ACK/NACK according to claim 1 and SR is characterized in that the information bit of said ACK/NACK is the 2-4 bit.
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Cited By (3)
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| WO2018228456A1 (en) * | 2017-06-14 | 2018-12-20 | 华为技术有限公司 | Method for transmitting control information, terminal, network side device, and communication system |
| JP2022501935A (en) * | 2018-09-27 | 2022-01-06 | テレフオンアクチーボラゲット エルエム エリクソン（パブル） | Support for sending within preconfigured UL resources |
| US12120623B2 (en) | 2018-07-31 | 2024-10-15 | Telefonaktiebolaget Lm Ericsson (Publ) | Determining timing advance validity in idle mode |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018228456A1 (en) * | 2017-06-14 | 2018-12-20 | 华为技术有限公司 | Method for transmitting control information, terminal, network side device, and communication system |
| US11184910B2 (en) | 2017-06-14 | 2021-11-23 | Huawei Technologies Co., Ltd. | Control information transmission method, terminal device, network side device, and communications system |
| US12120623B2 (en) | 2018-07-31 | 2024-10-15 | Telefonaktiebolaget Lm Ericsson (Publ) | Determining timing advance validity in idle mode |
| JP2022501935A (en) * | 2018-09-27 | 2022-01-06 | テレフオンアクチーボラゲット エルエム エリクソン（パブル） | Support for sending within preconfigured UL resources |
| JP7201798B2 (en) | 2018-09-27 | 2023-01-10 | テレフオンアクチーボラゲット エルエム エリクソン（パブル） | Support for transmission in preconfigured UL resources |
| JP2023052041A (en) * | 2018-09-27 | 2023-04-11 | テレフオンアクチーボラゲット エルエム エリクソン（パブル） | Support for transmission in preconfigured ul resource |
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| CN102571297B (en) | 2015-10-28 |
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Owner name: ZHANXUN COMMUNICATION (SHANGHAI) CO. LTD. Effective date: 20141015 |
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Effective date of registration: 20141015 Address after: 100191 Haidian District Garden North Road, No. 52, Beijing Applicant after: Research Institute of Telecommunications Transmission, Ministry of Industry and Information Technology Applicant after: Zhanxun Communication (Shanghai) Co., Ltd. Address before: 100191 Haidian District Garden North Road, No. 52, Beijing Applicant before: Research Institute of Telecommunications Transmission, Ministry of Industry and Information Technology |
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