CN106231672B - Communication information sending method and device - Google Patents

Communication information sending method and device Download PDF

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Publication number
CN106231672B
CN106231672B CN201610571447.3A CN201610571447A CN106231672B CN 106231672 B CN106231672 B CN 106231672B CN 201610571447 A CN201610571447 A CN 201610571447A CN 106231672 B CN106231672 B CN 106231672B
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information
control information
ack
nack
user terminal
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CN106231672A (en
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刘德平
马莎
陈小波
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Beijing Jingshi Intellectual Property Management Co ltd
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Huawei Technologies Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/1607—Details of the supervisory signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0025—Transmission of mode-switching indication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/51—Allocation or scheduling criteria for wireless resources based on terminal or device properties
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention provides a method for transmitting communication information, when a certain user terminal has a plurality of control information to be transmitted at the same time, the invention selects one of the plurality of control information to be transmitted on the channel resource of the user terminal or multiplexed on the data channel resource for transmission according to the value of the certain control information, the invention also provides a transmitting device corresponding to the transmitting method, the single carrier characteristic requirement of uplink of a 3GPP LTE system can be met through the simple processing, simultaneously, the transmission performance of the transmitted information can be ensured to the maximum extent when the energy of the user terminal is limited, and different control channels can be independently designed and do not influence each other, and the system is simple to realize.

Description

Communication information sending method and device
Technical Field
The present invention relates to wireless communication technologies, and in particular, to a control channel transmission technology.
Background
In the uplink direction of the wireless communication system, i.e. the direction in which the ue transmits to the network side, the ue needs to transmit different uplink control signaling to the network side. For example, in the long term evolution of the third generation partnership project (3GPP LTE, 3)rdIn the Generation partial near Term Evolution system, the uplink control signaling includes ACK/NACK (ACKnowledgement/Non-ACKnowledgement) information, Channel Quality Indicator (CQI) information, Multiple Input Multiple Output (MIMO) related antenna information, and uplink scheduling request indication information (SRI, scheduling request) information.
CQI information for informing the user terminal of the perceived downlink channel quality condition to help the network side (base station) for link adaptation and frequency selective scheduling. The communication system generally performs feedback of CQI according to a specific period.
And ACK/NACK information used for confirming whether the communication is successful or not by the two communication parties. In a Frequency Division Duplex (FDD) system, if a user terminal receives only one codeword at a time, the user terminal feeds back only one ACK/NACK at a time; if the user terminal receives multiple codewords at a time, e.g., using MIMO techniques, the user terminal may feed back multiple ACKs/NACKs at a time. In a Time Division Duplex (TDD) system, the ue may feed back multiple ACKs/NACKs of data received at multiple downlink times at one Time at one uplink Time. Generally, when the user terminal correctly detects downlink data, ACK is fed back, and if the terminal considers that the detected downlink data is wrong, NACK is fed back.
SRI information is that for a ue that has been synchronized with a base station, when there is data to wait for uplink transmission, the SRI information needs to send Scheduling Request Indicator (SRI) to the base station, and after receiving the SRI information, the base station sends resource allocation information to the ue to start uplink transmission if time-frequency resources are allocated to the ue.
Whether to send the CQI information and the ACK/NACK information is independent of uplink data transmission, and whether to send the two uplink control signaling is also independent of each other. Generally, when a certain user terminal only transmits CQI information or only ACK/NACK information needs to be transmitted, the transmission is performed on dedicated resources allocated to the user terminal and the corresponding dedicated resources are referred to as a CQI channel or an ACK channel of the user. SRI information is associated with uplink data transmission and is typically sent prior to data transmission, with its transport channel becoming an SRI channel.
In the 3GPP LTE system, the uplink employs a single carrier frequency division multiple access technology to reduce the peak-to-average ratio of signals, but information that needs to be transmitted simultaneously can only be transmitted on the same frequency resource according to the same operation flow. In order to maintain uplink single carrier characteristics, when one ue simultaneously has uplink control signaling to transmit, it is impossible to simultaneously transmit using the dedicated resources. At this time, there are two cases according to whether there is uplink data to be sent at the same time when sending the uplink control signaling.
In the following, taking ACK/NACK information and CQI information as uplink control signaling that needs to be sent simultaneously as an example, the prior art in these two cases is described:
in order to maintain the uplink single carrier characteristic of the 3GPP LTE system when there is no uplink data to be transmitted simultaneously, the prior art multiplexes the ACK/NACK information and the CQI information on the CQI channel resource of the user in a time division multiplexing manner for transmission. Referring to fig. 1, the ACK/NACK in fig. 1 does not distinguish between one and multiple ACK/NACKs: (a) the case of ACK/NACK only, (b) the case of CQI only, and (c) the case of ACK/NACK and CQI at the same time. NULL in fig. 1 indicates that no information is transmitted.
And when uplink data are simultaneously transmitted, the ACK/NACK and the CQI are respectively transmitted after being multiplexed with the data packet on the corresponding data channel.
The inventor finds that, when multiple control signaling are transmitted together, the amount of used resources is reduced, the performance of the multiplexed multiple control signaling is affected, and the system design is complicated because the sending mode for sending multiple control information simultaneously is different from the sending mode for separately transmitting respective information.
Disclosure of Invention
The main technical problem to be solved by the present invention is to provide a method and an apparatus for transmitting a communication signal, which can maintain the single carrier characteristic and ensure a small control signaling performance loss when a certain user terminal has multiple control signaling to be transmitted at the same time.
The embodiment of the invention provides a method for transmitting communication information, when a certain user terminal simultaneously has a plurality of control information to be transmitted, the method selects one of the plurality of control information to be transmitted on the channel resource of the user terminal or to be multiplexed on the data channel resource for transmission according to the value of the certain control information.
The invention also provides a transmitting device corresponding to the transmitting method.
The simple processing can meet the requirement of single carrier characteristic of uplink of the 3GPP LTE system, and meanwhile, large system performance loss can not be caused. The scheme can ensure the transmission performance of the transmitted information to the maximum extent when the energy of the user terminal is limited, and different control channels can be independently designed and do not influence each other, so that the system is simple to realize.
Drawings
FIG. 1 is a diagram of an existing ACK/NACK and CQI transmission scheme when there is no simultaneous uplink data transmission;
FIG. 2 is a schematic diagram of a first embodiment of the present invention
FIG. 3 is a diagram of a second embodiment of the present invention
FIG. 4 is a schematic diagram of a third embodiment of the present invention
FIG. 5 is a fourth embodiment of the present invention
FIG. 6 is a schematic diagram of a fifth embodiment of the present invention
FIG. 7 is a flow chart of a method of an embodiment of the present invention
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings.
In the following, detailed description will be given by taking an example in which ACK/NACK information and CQI information need to be transmitted simultaneously in a 3GPP LTE system.
The following embodiments provide a method for transmitting communication information, where ACK/NACK information and CQI information of a user terminal need to be transmitted simultaneously, and one of the two types of control information is selected to be transmitted according to a value of the ACK/NACK information.
In the first to fifth embodiments, when the ue does not have simultaneous uplink data transmission, the selected control information is sent on the dedicated resource allocated to the selected control information.
Detailed description of the invention
This embodiment addresses the case where there is only one ACK/NACK at a time. Referring to fig. 2, the method of the present invention comprises the following steps:
(a) and if the value of the ACK/NACK information is ACK, selecting CQI information and transmitting the CQI information on the CQI channel resources of the user.
(b) And if the value of the ACK/NACK information is NACK, selecting the ACK/NACK information and transmitting the ACK/NACK information on the ACK/NACK channel resource of the user.
Detailed description of the invention
This embodiment addresses the case where there is only one ACK/NACK at a time. This is the same as in the first embodiment. Referring to fig. 3, the process of the embodiment of the present invention is:
(a) if the value of the ACK/NACK information is ACK, selecting the ACK/NACK information and transmitting the ACK/NACK information on ACK channel resources of the user;
(b) and if the ACK/NACK information takes the value of NACK, selecting the CQI information and transmitting the CQI information on the CQI channel resources of the user.
Detailed description of the invention
The present embodiment addresses the case where there are a plurality of ACKs/NACKs per time. Referring to fig. 4, the process of the embodiment of the present invention is:
(a) if the values of the plurality of ACK/NACK information are all ACK, the CQI information is selected and transmitted on the CQI channel resources of the user;
(b) and if at least one value of the plurality of ACK/NACK information is NACK, selecting the plurality of ACK/NACK information and transmitting the ACK/NACK information on the ACK/NACK channel resource of the user.
Detailed description of the invention
The present embodiment addresses the case where there are a plurality of ACKs/NACKs at a time. As in the case of the third embodiment, referring to fig. 5, the process of the embodiment of the present invention is:
(a) if all the values of the plurality of ACK/NACK information are NACK, selecting CQI information and transmitting the CQI information on CQI channel resources of the user;
(b) and if at least one of the values of the plurality of ACK/NACK information is ACK, selecting the plurality of ACK/NACK information and transmitting the ACK/NACK information on the ACK/NACK channel resource of the user.
Detailed description of the invention
In the present embodiment, there may be only one ACK/NACK or a plurality of ACK/NACKs at a time. Referring to fig. 6, the process of the embodiment of the present invention is:
and selecting the ACK/NACK information and transmitting the ACK/NACK information on the ACK/NACK channel resource of the user.
That is, in this step, regardless of whether there is one or more ACK/NACK to be sent, and regardless of the specific value of the ACK/NACK, the CQI is discarded and not transmitted, and the ACK/NACK information is selected to be transmitted on the ACK/NACK channel resource of the user.
For the first four embodiments, at the receiving side, when the base station or NodeB determines that it should receive ACK/NACK and CQI information sent from a certain user terminal at the same time, usually the Node B first performs detection on the ACK channel of the user terminal, and if no valid information is detected, demodulates the CQI channel of the user terminal to obtain CQI information, and determines that corresponding downlink data is correct or erroneous. Wherein, in the first and third embodiments, the ACK is discarded and not transmitted, and if the base station does not detect valid information, it is considered that the downlink data reception is correct; in the second and fourth embodiments, NACK is discarded and not transmitted, and if the base station does not detect valid information, it is determined that the downlink data has a reception error.
If the effective information is detected on the ACK channel of the user terminal, the downlink data receiving is judged to be correct (ACK) or wrong (NACK) according to the information content, and meanwhile, the CQI channel is considered to be discarded and not transmitted, and the demodulation of the CQI information is not carried out.
If the CQI is discarded and not transmitted, the current channel quality condition may be predicted from the CQI information fed back immediately before several times, for example, simply using the last CQI information as the current CQI. Because the channel has certain correlation, the CQI fed back before is used as a scheduling basis, and large performance loss can not be caused.
Detailed description of the invention
The above embodiments are directed to the case where there is no simultaneous uplink data transmission, but the above embodiments of the present invention are also applicable to the case where there is simultaneous uplink data transmission. When the user terminal has uplink data and various control information to be transmitted simultaneously, the method comprises the following steps: selecting one of the plurality of control information according to the value of the one of the plurality of control information; and multiplexing the selected control information to the data channel resource of the user terminal for transmission.
In the 3GPP LTE system, in order to maintain uplink single carrier characteristics, when there is uplink data transmission, if there is uplink control information to be transmitted at the same time, the uplink control information is multiplexed onto a data channel and transmitted together. Specifically, when the user terminal has uplink data, ACK/NACK and CQI to send at the same time, the uplink data, the ACK/NACK and the CQI are multiplexed together on a data channel for transmission.
In a specific embodiment, when the user equipment simultaneously has uplink data, ACK/NACK information and CQI information to be transmitted, the method includes:
selecting ACK/NACK information or CQI information according to the value of the ACK/NACK information of the various control information; and multiplexing the selected control information to the data channel resource of the user terminal for transmission.
The specific selection process may be the same as in the first to fifth embodiments, except that the selected control information is multiplexed onto the data channel for transmission.
Advantageous effects of the embodiments of the present invention are explained below. When the user terminal has no simultaneous uplink data transmission, according to the method of the present invention, if the user terminal has uplink ACK/NACK and CQI to be sent at the same time, one of the ACK/NACK and CQI is discarded for transmission, and the remaining one is transmitted on its own channel resource or the data channel resource multiplexed to the user terminal. When the user terminal is in an energy-limited scene, the user terminal only needs to transmit ACK/NACK or CQI information when ACK/NACK and CQI occur simultaneously, and the transmission performance of the transmitted information can be ensured as much as possible. In the scheme, the ACK/NACK and the CQI are not multiplexed into the same channel resource for transmission when the simultaneous uplink data transmission does not exist, so that the ACK channel and the CQI can be independently designed and do not influence each other, and the design and the realization of the system can be simplified.
In addition, when no simultaneous uplink data transmission exists, when ACK/NACK and CQI information occur simultaneously, only one of the information is transmitted, and the position of the occurrence of the transmitted information limits the content of the information, namely the ACK/NACK occurs on the ACK channel of the user terminal and the CQI occurs on the CQI channel of the user terminal, thereby providing additional protection for the transmitted information. The ACK/NACK may also be implicitly inferred by the reception of the CQI information and the selection rules adopted when the ACK/NACK is discarded without transmission.
The uplink control signaling in the above scheme is not limited to ACK/NACK information and CQI information, and is also applicable to other uplink control signaling, for example, SRI information. For example, when the SRI information of the same user needs to be transmitted together with ACK/NACK, the processing of the above embodiments may be adopted, and only the CQI information needs to be replaced by the SRI information.
Detailed description of the invention
The present invention also provides a communication information transmitting apparatus, including:
the selection module is used for selecting one control information of a plurality of control information according to the value of the one control information of the plurality of control information when the user terminal has the plurality of control information to be sent simultaneously;
and the transmission module is connected with the selection module and used for transmitting the selected control information on the exclusive resource distributed for the selected control information or multiplexing the selected control information on the data channel resource of the user terminal for transmission.
The multiple kinds of control information may be uplink control signaling such as ACK/NACK information, CQI information, SRI information, and the like, and generally, one of the ACK/NACK information or the CQI information or the SRI information is selected according to different values of the ACK/NACK information or no matter what value is the ACK/NACK information. Transmitting the selected control information on a dedicated resource allocated for the selected control information when there is no data to be transmitted simultaneously; and multiplexing the selected control information to the data channel resource of the user terminal for transmission when the data which needs to be transmitted simultaneously exist.
The present invention also provides the following examples. It should be noted that the numbering of the following examples does not necessarily need to follow the numbering order of the previous examples:
embodiment 1, a method for transmitting communication information, comprising:
when a user terminal has a plurality of control information to be sent simultaneously, selecting one control information of the plurality of control information according to the value of the one control information of the plurality of control information;
and sending the selected control information.
Embodiment 2, according to the method of embodiment 1, the sending process specifically includes:
and transmitting the selected control information on the dedicated resources allocated to the selected control information.
Embodiment 3, according to the method described in embodiment 1, the multiple kinds of control information are uplink control signaling sent by various terminals to the base station.
Embodiment 4, according to the method of embodiment 2, the uplink control signaling specifically includes ACK/NACK information, CQI information for channel quality indication, and SRI information for resource request indication.
Example 5, the method of examples 1 or 4, wherein the selecting step is specifically,
and selecting one control information of the plurality of control information according to the value of the ACK/NACK information.
Embodiment 6, according to the method in embodiment 4, if only one ACK/NACK message needs to be fed back, the selecting step is specifically,
if the value of the ACK/NACK information is ACK, other uplink control signaling is selected;
and if the value of the ACK/NACK information is NACK, selecting the ACK/NACK information.
Embodiment 7, according to the method in embodiment 4, if only one ACK/NACK message needs to be fed back, the selecting step is specifically,
if the value of the ACK/NACK information is ACK, selecting the ACK/NACK information;
and if the ACK/NACK information takes the value of NACK, selecting other uplink control signaling.
Embodiment 8, according to the method in embodiment 4, if there are multiple ACK/NACK messages to be fed back, the selecting step is specifically,
if the values of the plurality of ACK/NACK information are all ACK, other uplink control signaling is selected;
and if at least one of the plurality of ACK/NACK information takes the NACK value, selecting the plurality of ACK/NACK information.
Embodiment 9, according to the method in embodiment 4, if there are multiple ACK/NACK messages to be fed back, the selecting step is specifically,
if all the values of the plurality of ACK/NACK information are NACK, selecting other uplink control signaling;
and if at least one of the values of the plurality of ACK/NACK information is ACK, selecting the plurality of ACK/NACK information.
Embodiment 10, according to the method in embodiment 6 or 7 or 8 or 9, the other uplink control signaling is one of channel quality indicator CQI information and resource request indicator SRI information.
Embodiment 11, according to the method in embodiment 1, the selected control information is multiplexed onto the data channel resource of the ue for transmission.
Embodiment 12, an apparatus for transmitting communication information, the apparatus comprising:
the selection module is used for selecting one control information of a plurality of control information according to the value of the one control information of the plurality of control information when the user terminal has the plurality of control information to be sent simultaneously;
and the transmission module is connected with the selection module and used for transmitting the selected control information on the exclusive resource distributed for the selected control information or multiplexing the selected control information on the data channel resource of the user terminal for transmission.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be construed as the protection scope of the present invention.

Claims (7)

1. A method of transmitting communication information, comprising:
when two kinds of control information need to be sent simultaneously, a user terminal selects one kind of control information of the two kinds of control information according to the value of the one kind of control information of the two kinds of control information;
transmitting said selected one of the control information on the dedicated resource allocated for said selected one of the control information;
the dedicated resource is allocated to the user equipment, and the two kinds of control information include ACK/NACK information and SRI information.
2. A user terminal, comprising:
means for selecting one of the two control information according to a value of the one of the two control information when the user terminal has the two control information to be transmitted simultaneously; and
means for transmitting said selected one of said control information on a dedicated resource allocated for said selected one of said control information;
the dedicated resource is allocated to the user equipment, and the two kinds of control information are ACK/NACK information and resource request indication SRI information.
3. An apparatus for transmitting communication information in a user terminal, comprising:
means for selecting one of the two control information according to a value of the one of the two control information when the user terminal has the two control information to be transmitted simultaneously; and
means for transmitting said selected one of said control information on a dedicated resource allocated for said selected one of said control information;
the dedicated resource is allocated to the user equipment, and the two kinds of control information are ACK/NACK information and resource request indication SRI information.
4. A method of receiving communication information, comprising:
receiving a control message sent by a user terminal, wherein the control message is selected from two control messages according to the value of one control message of the two control messages when the user terminal has two control messages to be sent simultaneously, and the control message is received on a dedicated resource allocated to the control message, and the dedicated resource is allocated to the user terminal;
the two kinds of control information are acknowledgement/negative acknowledgement (ACK/NACK) information and resource request indication (SRI) information.
5. An apparatus for receiving communication information, comprising:
means for receiving a control information transmitted from a ue, wherein the control information is selected from two kinds of control information according to a value of one of the two kinds of control information when the ue has the two kinds of control information to transmit simultaneously, and the control information is received on a dedicated resource allocated to the control information, and the dedicated resource is allocated to the ue;
the two kinds of control information are acknowledgement/negative acknowledgement (ACK/NACK) information and resource request indication (SRI) information.
6. A readable storage medium, characterized in that the readable storage medium stores a program which, when executed, performs the method steps of claim 1.
7. A readable storage medium, characterized in that the readable storage medium stores a program which, when executed, performs the method steps of claim 4.
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