CN110300451B - Beam indication method, beam selection method, device, base station and terminal - Google Patents

Beam indication method, beam selection method, device, base station and terminal Download PDF

Info

Publication number
CN110300451B
CN110300451B CN201810234820.5A CN201810234820A CN110300451B CN 110300451 B CN110300451 B CN 110300451B CN 201810234820 A CN201810234820 A CN 201810234820A CN 110300451 B CN110300451 B CN 110300451B
Authority
CN
China
Prior art keywords
information
indication
receiving
time length
downlink control
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201810234820.5A
Other languages
Chinese (zh)
Other versions
CN110300451A (en
Inventor
左君
徐国珍
王森
王爱玲
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Mobile Communications Group Co Ltd
China Mobile Communications Ltd Research Institute
Original Assignee
China Mobile Communications Group Co Ltd
China Mobile Communications Ltd Research Institute
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China Mobile Communications Group Co Ltd, China Mobile Communications Ltd Research Institute filed Critical China Mobile Communications Group Co Ltd
Priority to CN201810234820.5A priority Critical patent/CN110300451B/en
Priority to PCT/CN2019/077627 priority patent/WO2019179323A1/en
Publication of CN110300451A publication Critical patent/CN110300451A/en
Application granted granted Critical
Publication of CN110300451B publication Critical patent/CN110300451B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • 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
    • H04W72/046—Wireless resource allocation based on the type of the allocated resource the resource being in the space domain, e.g. beams
    • 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
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

Landscapes

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

Abstract

The invention provides a beam indicating method, a beam selecting method, a device, a base station and a terminal, wherein the method comprises the following steps: sending indication information to a target terminal, wherein the indication information is used for indicating a beam indication mode of the target terminal; when the indication information indicates that the beam indication mode of the target terminal is semi-static indication, sending beam information for indicating a receiving beam and first downlink control information of the effective time length of the beam information to the target terminal; in the embodiment of the invention, if the beam indication mode of the terminal does not change within the effective time length of the beam information, the base station does not need to transmit and receive the beam information of the beam through the downlink control information, thereby avoiding the waste of resources.

Description

Beam indication method, beam selection method, device, base station and terminal
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a beam indication method, a beam selection method, a device, a base station, and a terminal.
Background
In 5G, the multi-antenna system adopts a mixed architecture of a digital domain and an analog domain to take coverage and complexity into consideration. When a plurality of analog beams are configured at the base station side and the user side, beam management is needed to enable the user and the base station to communicate by using a beam pair with better channel quality so as to guarantee the transmission rate. The downlink beam management process comprises the following steps: the base station sends a beam management reference signal, the user measures and reports a beam measurement result, the base station selects a downlink sending beam, and the user receives downlink data by using a receiving beam matched with the base station sending beam. In the current 3GPP discussion, the base station may use implicit or explicit beam indication in order for the user to use a receive beam that matches the transmit beam of the base station. The explicit or implicit beam indication method is needed to be decided by the base station end and then inform the user through high-layer signaling (such as Radio Resource Control (RRC) signaling). In the implicit beam indication mode, the base station and the user select beams according to an agreed criterion, for example, the beams same as the control channel are used; in the explicit beam indication scheme, the base station transmits Transmission Configuration Information (TCI) to a user through a downlink control channel, and the user can know downlink reception beam information through the TCI. The specific mode is that the base station configures a TCI information table through RRC signaling, wherein M TCI states are in total in the information table, each state is composed of a plurality of { RS index values + quasi co-location types }, the quasi co-location (QCL) types comprise types of TypeA, TypeB, TypeC and TypeD, and the TypeD represents spatial quasi co-location. The TCI domain occupies 3-bit in the downlink control information and represents an index value of a certain TCI state. After receiving the downlink control information, the user reads the 3-bit of the TCI index information, such as '101', and obtains the quasi-co-location information according to a certain TCI state in the TCI information table corresponding to '101'. The user receives data information by using the receiving beam of the RS with { RS index value + type } in this state, that is, the receiving beam information is obtained by the quasi co-location information of type.
Currently, in 3GPP discussions, what beam indication method (implicit or explicit) the base station adopts needs to notify the user through higher layer signaling, and generally, the time required from the transmission of the higher layer signaling by the base station to the reception of the user is in the order of hundreds of milliseconds, so that the implicit or explicit method of beam indication cannot be switched rapidly and dynamically. If the current beam indication mode is explicit indication, there is information about the received beam in the TCI domain of the control channel, but in some scenarios, such as high-speed moving (high-speed rail) scenarios, the direct path in the channel between the base station and the terminal is strong, the scattering path is weak, the motion trajectory and speed of the terminal are relatively fixed, and the selection of the beam pair has strong regularity, as shown in fig. 1.
In fig. 1, it is assumed that the base station can form 6 analog beams, when a train passes through the coverage area of the base station, the train sequentially communicates with beams #1, #2, #3, #4, #5 and #6, the high-speed rail runs at 500km/h, the analog beam width is 15 degrees, the inter-station distance is 1732 meters, the station track distance is 100m for estimation, the communication time between the train and each beam is about hundreds of milliseconds, i.e. the time interval for beam switching is hundreds of milliseconds. According to the existing beam indication mode, if implicit beam indication is adopted, rapid switching of beams may not be ensured through high-level signaling; if the explicit beam indication method is used, the TCI field of the control channel of each timeslot has the related indication information of the receive beam, but the matching beam pair of the base station and the terminal may remain unchanged for hundreds of milliseconds in a high-speed rail scenario, that is, the related receive beam information of the TCI field may be the same for hundreds of milliseconds, which causes a waste of resources.
Disclosure of Invention
The invention aims to provide a beam indicating method, a beam selecting method, a device, a base station and a terminal, which aim to solve the problem of resource waste caused by a mode of performing beam indication only based on high-level signaling or only based on downlink control information in the prior art.
In order to achieve the above object, an embodiment of the present invention provides a beam indicating method, including:
sending indication information to a target terminal, wherein the indication information is used for indicating a beam indication mode of the target terminal;
and when the indication information indicates that the beam indication mode of the target terminal is semi-static indication, transmitting beam information for indicating a receiving beam and first downlink control information of the effective time length of the beam information to the target terminal.
Wherein the method further comprises:
sending the change information of the beam indication mode to a target terminal through a high-level signaling within the effective time length of the beam information; the change information is used for changing the beam indication mode of the target terminal into a high-level signaling indication or a downlink control information indication.
Wherein the method further comprises:
if the change information changes the beam indication mode of the target terminal into a high-level signaling indication, the beam information of the received beam is sent to the target terminal through the high-level signaling;
and if the change information changes the beam indication mode of the target terminal into a downlink control information indication, sending second downlink control information for indicating the beam information of the received beam to the target terminal.
Wherein the method further comprises:
and after the effective time length of the beam information is reached, transmitting third downlink control information for indicating the beam information of the received beam and the effective time length of the beam information to a target terminal.
Wherein the beam information of the receiving beam is an index value in a preset beam set, or the beam information of the receiving beam is an index value of transmission configuration information;
wherein the preset beam set comprises a plurality of receiving beams.
The effective time length of the beam information is an index value in a preset effective time length set;
wherein the preset valid time length set comprises a plurality of valid time lengths.
The embodiment of the invention also provides a beam selection method, which comprises the following steps:
receiving indication information sent by a base station, wherein the indication information is used for indicating a beam indication mode of a terminal;
when the indication information indicates that the beam indication mode of the terminal is semi-static indication, receiving beam information used for indicating a receiving beam and first downlink control information of the effective time length of the beam information, which are sent by a base station;
and selecting a receiving beam for the downlink data within the effective time length of the beam information according to the beam information in the first downlink control information.
Wherein the method further comprises:
receiving the change information of the beam indication mode sent by the base station through high-level signaling within the effective time length of the beam information;
wherein the modification information is used for modifying the beam indication mode of the terminal into a high-level signaling indication or a downlink control information indication.
Wherein the method further comprises:
if the change information is used for changing the beam indication mode of the terminal into a high-level signaling indication, receiving beam information of a receiving beam sent by a base station through the high-level signaling, and selecting the receiving beam for downlink data after receiving the change information according to the beam information;
and if the change information is used for changing the beam indication mode of the terminal into a downlink control information indication, receiving second downlink control information which is sent by the base station and used for indicating the beam information of the received beam, and selecting the received beam for the downlink data after the change information is received according to the beam information in the second downlink control information.
Wherein the method further comprises:
after the effective time length of the beam information is reached, receiving third downlink control information which is sent by a base station and used for indicating the beam information of the received beam and the effective time length of the beam information;
and selecting a receiving beam for the downlink data within the effective time length of the beam information according to the beam information in the third downlink control information.
Wherein the beam information of the receiving beam is an index value in a preset beam set, or the beam information of the receiving beam is an index value of transmission configuration information;
the preset beam set comprises a plurality of receiving beams.
The effective time length of the beam information is an index value in a preset effective time length set;
wherein the preset valid time length set comprises a plurality of valid time lengths.
An embodiment of the present invention further provides a beam indicating apparatus, including:
a first sending module, configured to send indication information to a target terminal, where the indication information is used to indicate a beam indication mode of the target terminal;
a second sending module, configured to send, to the target terminal, the first downlink control information for indicating the beam information of the received beam and the effective time length of the beam information when the indication information indicates that the beam indication manner of the target terminal is a semi-static indication.
The embodiment of the present invention further provides a base station, which includes a processor and a transceiver, where the processor and the transceiver are configured to execute the following processes:
the processor controls the transceiver to send indication information to a target terminal, wherein the indication information is used for indicating a beam indication mode of the target terminal;
and when the indication information indicates that the beam indication mode of the target terminal is semi-static indication, the transceiver sends beam information for indicating a receiving beam and first downlink control information of the effective time length of the beam information to the target terminal.
Wherein the transceiver is further configured to:
sending the change information of the beam indication mode to a target terminal through a high-level signaling within the effective time length of the beam information; the change information is used for changing the beam indication mode of the target terminal into a high-level signaling indication or a downlink control information indication.
Wherein the transceiver is further configured to:
if the change information changes the beam indication mode of the target terminal into a high-level signaling indication, the beam information of the received beam is sent to the target terminal through the high-level signaling;
and if the change information changes the beam indication mode of the target terminal into a downlink control information indication, sending second downlink control information for indicating the beam information of the received beam to the target terminal.
Wherein the transceiver is further configured to:
and after the effective time length of the beam information is reached, transmitting third downlink control information for indicating the beam information of the received beam and the effective time length of the beam information to a target terminal.
Wherein the beam information of the receiving beam is an index value in a preset beam set, or the beam information of the receiving beam is an index value of transmission configuration information;
wherein the preset beam set comprises a plurality of receiving beams.
The effective time length of the beam information is an index value in a preset effective time length set;
wherein the preset valid time length set comprises a plurality of valid time lengths.
An embodiment of the present invention further provides a beam selection apparatus, including:
a first receiving module, configured to receive indication information sent by a base station, where the indication information is used to indicate a beam indication mode of the terminal;
a second receiving module, configured to receive, when the indication information indicates that a beam indication manner of the terminal is a semi-static indication, beam information used for indicating a receiving beam and first downlink control information of an effective time length of the beam information, where the first downlink control information is sent by a base station;
and the beam selection module is used for selecting a receiving beam for the downlink data within the effective time length of the beam information according to the beam information in the first downlink control information.
The embodiment of the invention also provides a terminal, which comprises a processor and a transceiver, wherein the transceiver is used for executing the following processes:
receiving indication information sent by a base station, wherein the indication information is used for indicating a beam indication mode of a terminal;
when the indication information indicates that the beam indication mode of the terminal is semi-static indication, receiving beam information used for indicating a receiving beam and first downlink control information of the effective time length of the beam information, which are sent by a base station;
the processor is used for executing the following processes:
and selecting a receiving beam for the downlink data within the effective time length of the beam information according to the beam information in the first downlink control information.
Wherein the transceiver is further configured to:
receiving the change information of the beam indication mode sent by the base station through high-level signaling within the effective time length of the beam information;
wherein the modification information is used for modifying the beam indication mode of the terminal into a high-level signaling indication or a downlink control information indication.
Wherein the transceiver is further configured to:
if the change information is used for changing the beam indication mode of the terminal into a high-level signaling indication, receiving beam information of a receiving beam sent by a base station through the high-level signaling; the processor is further configured to: selecting a receiving beam for the downlink data after receiving the change information according to the beam information;
if the change information is used for changing the beam indication mode of the terminal into a downlink control information indication, receiving second downlink control information which is sent by a base station and used for indicating the beam information of the received beam; the processor is further configured to: and selecting a receiving beam for the downlink data after receiving the change information according to the beam information in the second downlink control information.
Wherein the transceiver is further configured to:
after the effective time length of the beam information is reached, receiving third downlink control information which is sent by a base station and used for indicating the beam information of the received beam and the effective time length of the beam information;
the processor is further configured to: and selecting a receiving beam for the downlink data within the effective time length of the beam information according to the beam information in the third downlink control information.
Wherein the beam information of the receiving beam is an index value in a preset beam set, or the beam information of the receiving beam is an index value of transmission configuration information;
the preset beam set comprises a plurality of receiving beams.
The effective time length of the beam information is an index value in a preset effective time length set;
wherein the preset valid time length set comprises a plurality of valid time lengths.
An embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program is executed by a processor to implement the steps in the beam indicating method as described above; alternatively, the program realizes the steps in the beam selection method as described above when executed by a processor.
The technical scheme of the invention at least has the following beneficial effects:
in the beam indicating method, the beam selecting method, the device, the base station and the terminal of the embodiment of the invention, the beam indicating mode of the terminal is informed through the indicating information, when the beam indicating mode of the terminal is semi-static indication, first downlink control information is sent to the terminal, the first downlink control information is used for indicating the beam information of the receiving beam and the effective time length of the beam information, if the beam indicating mode of the terminal does not change within the effective time length of the beam information, the base station does not need to send the beam information of the receiving beam through the downlink control information, and the waste of resources is avoided; further, if the beam indication mode of the terminal changes within the effective time length of the beam information, the base station may send the change information to the terminal through a high-level signaling, thereby dynamically implementing a rapid change of the beam indication method with less signaling.
Drawings
FIG. 1 is a schematic diagram of a beam in a high-speed mobile scene in the prior art;
fig. 2 is a flowchart illustrating steps of a beam indicating method according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a time slot in a beam indication method and a beam selection method according to an embodiment of the present invention;
fig. 4 is a flowchart illustrating steps of a beam selection method according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a beam indicating apparatus according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a base station according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a beam selection apparatus according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a terminal according to an embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
As shown in fig. 2, an embodiment of the present invention provides a beam indicating method, including:
step 21, sending indication information to a target terminal, where the indication information is used to indicate a beam indication mode of the target terminal.
In this step, the beam indication mode of the target terminal includes three modes, the first mode is: a high layer signaling indication; the second way is: downlink control information DCI indication; the third mode is as follows: a semi-static indication, such as a downlink control information DCI indication + a higher layer signaling indication.
And step 22, when the indication information indicates that the beam indication mode of the target terminal is a semi-static indication, transmitting beam information for indicating a receiving beam and first downlink control information of the effective time length of the beam information to the target terminal.
It should be noted that, in the above embodiment of the present invention, when transmitting, to a target terminal, first downlink control information for indicating beam information of a received beam and an effective time length of the beam information, a base station may directly carry the beam information and the effective time length of the beam information in the first downlink control information; alternatively, the base station may also carry auxiliary information capable of representing or including the beam information and the effective time length of the beam information in the first downlink control information, and the terminal may indirectly obtain the beam information of the received beam after receiving the auxiliary information carried by the first downlink control information. For example, the base station carries transmission configuration indication information in the first downlink control information, where the transmission configuration indication information includes information required by demodulation of a plurality of users, and the beam information is one of the information, so that the terminal receives the transmission configuration information and obtains the beam information.
The embodiment of the invention adds a new beam indication mode, namely a semi-static indication mode. Preferably, the semi-static indication mode is a beam indication mode combining downlink control information indication and high-level signaling indication, and the timeliness of the downlink control information indication and the reliability of the high-level information indication are fully utilized, so that the beam information of the received beam and the rapid change of the beam indication mode are dynamically indicated with less signaling.
Further, in the foregoing embodiment of the present invention, after step 22, the method further includes:
sending the change information of the beam indication mode to a target terminal through a high-level signaling within the effective time length of the beam information; the change information is used for changing the beam indication mode of the target terminal into a high-level signaling indication or a downlink control information indication.
Preferably, within the effective time length of the beam information, if the base station determines to change the beam indication mode of the target terminal, for example, the beam indication mode of the target terminal is changed to a higher layer signaling indication, or the beam indication mode of the target terminal is changed to a downlink control information DCI indication. The base station directly sends the change information of the beam indication mode to the target terminal through high-level signaling, and the subsequent base station and the terminal both acquire the beam information of the received beam according to the changed beam indication mode.
Within the effective time length of the beam information, if the beam indication mode of the target terminal does not need to be changed, that is, the beam indication mode of the target terminal is always semi-static indication, the base station does not need to indicate the beam information of the received beam in other downlink control information, does not need to indicate the beam information of the received beam through high-level signaling, and does not need to indicate to change the target indication mode of the target terminal through high-level signaling, thereby saving resources.
Preferably, the higher layer signaling may be radio resource control RRC signaling. And after deciding that the current beam indication mode of a certain terminal is Downlink Control Information (DCI) plus high-level signaling, the base station informs the target terminal through RRC signaling. Further, as shown in fig. 3, the base station sends the beam information of the N-bit receive beam and the information of the effective time length of the M-bit in the downlink control information of the nth slot of the target terminal. If the effective time is k time slots, the downlink control information of the (n + 1), n +2, …, n + k-1) th time slot of the user does not have the beam information of the receiving beam, and the target terminal performs beam selection according to the beam information of the receiving beam of the nth time slot within the effective time length. Wherein N, k, N and M are positive integers.
Preferably, the beam information of the receiving beam is an index value in a preset beam set, or the beam information of the receiving beam is an index value of transmission configuration information; wherein the preset beam set comprises a plurality of receiving beams; the index in the preset beam set may also be implemented by direct indication or indirect indication, and is not particularly limited herein. The effective time length of the beam information is an index value in a preset effective time length set; wherein the preset valid time length set comprises a plurality of valid time lengths.
In the above embodiments of the present invention, the base station may pre-define a set a containing a plurality of receiving beam information and a preset active time length set B containing a plurality of active time lengths, and notify the terminal through RRC signaling. Correspondingly, the beam information in the downlink control information is an index value in the set a, and the effective time length of the beam information is an index value in the preset effective time length set B. It should be noted that the base station may update the set a and the preset valid time length set B through RRC signaling.
Further, after the base station sends the change information of the beam indication mode to the target terminal through the high-level signaling, the method further includes:
if the change information changes the beam indication mode of the target terminal into a high-level signaling indication, the beam information of the received beam is sent to the target terminal through the high-level signaling;
and if the change information changes the beam indication mode of the target terminal into a downlink control information indication, sending second downlink control information for indicating the beam information of the received beam to the target terminal.
In short, after the base station changes the beam indication mode of the target terminal through the high-level signaling, both the base station and the target terminal operate according to the changed beam indication mode, and the operating principle and the operating flow of the base station are consistent with those of the prior art and will not be described in detail here.
Bearing the above example, if the beam indication manner of the target terminal does not need to be changed within the effective time length of the beam information, after the effective time length of the beam information arrives, the method further includes:
and transmitting third downlink control information for indicating beam information of a reception beam and an effective time length of the beam information to a target terminal.
It should be further noted that the second downlink control information and the third downlink control information may both directly carry beam information of a received beam, or carry auxiliary information to indicate beam information of a received beam at intervals, and a specific manner is the same as that of the first downlink control information, which is not repeated herein.
As shown in fig. 3, the base station is configured to indicate beam information of a reception beam and an effective time length of the beam information in the downlink control information of the (n + k) th slot. In short, if the beam indication manner of the target terminal does not need to be changed within the effective time length indicated by the downlink control information, the base station retransmits the beam information and the effective time length through the downlink control information in the first time slot after the previous effective time length is reached; if the effective time lengths of each transmission are equal effective time lengths, the base station periodically transmits beam information for indicating a receiving beam and downlink control information of the effective time lengths of the beam information to the target terminal.
In summary, in the above embodiments of the present invention, the beam indication manner of the terminal is notified by the indication information, and when the beam indication manner of the terminal is a semi-static indication, first downlink control information is sent to the terminal, where the first downlink control information is used to indicate beam information of a received beam and an effective time length of the beam information, if the beam indication manner of the terminal does not change within the effective time length of the beam information, the base station does not need to send the beam information of the received beam through the downlink control information, so as to avoid waste of resources; further, if the beam indication mode of the terminal changes within the effective time length of the beam information, the base station may send the change information to the terminal through a high-level signaling, thereby dynamically implementing a rapid change of the beam indication method with less signaling.
As shown in fig. 4, an embodiment of the present invention further provides a beam selection method, including:
and step 41, receiving indication information sent by the base station, where the indication information is used to indicate a beam indication mode of the terminal.
In this step, the beam indication mode of the terminal includes three modes, the first mode is: a high layer signaling indication; the second way is: downlink control information DCI indication; the third mode is as follows: a semi-static indication, such as a downlink control information DCI indication + a higher layer signaling indication.
Step 42, when the indication information indicates that the beam indication mode of the terminal is a semi-static indication, receiving beam information used for indicating a receiving beam and first downlink control information of an effective time length of the beam information, which are sent by a base station;
and 43, selecting a receiving beam for the downlink data within the effective time length of the beam information according to the beam information in the first downlink control information.
In the above embodiment of the present invention, when receiving first downlink control information, which is sent by a base station and used for indicating beam information of a received beam and an effective time length of the beam information, the base station may directly carry the beam information and the effective time length of the beam information in the first downlink control information; alternatively, the base station may also carry auxiliary information capable of representing or including the beam information and the effective time length of the beam information in the first downlink control information, and the terminal may indirectly obtain the beam information of the received beam after receiving the auxiliary information carried by the first downlink control information. For example, the base station carries transmission configuration indication information in the first downlink control information, where the transmission configuration indication information includes information required by demodulation of a plurality of users, and the beam information is one of the information, so that the terminal receives the transmission configuration information and obtains the beam information.
The embodiment of the invention adds a new beam indication mode, namely a semi-static indication mode. Preferably, the semi-static indication mode is a beam indication mode combining downlink control information indication and high-level signaling indication, and the timeliness of the downlink control information indication and the reliability of the high-level information indication are fully utilized, so that the beam information of the received beam and the rapid change of the beam indication mode are dynamically indicated with less signaling.
Further, in the foregoing embodiment of the present invention, after step 43, the method further includes:
receiving the change information of the beam indication mode sent by the base station through high-level signaling within the effective time length of the beam information;
wherein the modification information is used for modifying the beam indication mode of the terminal into a high-level signaling indication or a downlink control information indication.
Preferably, within the effective time length of the beam information, if the base station determines to change the beam indication mode of the terminal, for example, the beam indication mode of the terminal is changed to a higher layer signaling indication, or the beam indication mode of the terminal is changed to a downlink control information DCI indication. The base station directly sends the change information of the beam indication mode to the terminal through high-level signaling, and the subsequent base station and the terminal both acquire the beam information of the received beam according to the changed beam indication mode.
Within the effective time length of the beam information, if the beam indication mode of the terminal does not need to be changed, that is, the beam indication mode of the terminal is always a semi-static indication, the base station does not need to indicate the beam information of the received beam in other downlink control information, does not need to indicate the beam information of the received beam through a high-level signaling, and does not need to indicate to change the target indication mode of the terminal through the high-level signaling, thereby saving resources.
Preferably, the higher layer signaling may be radio resource control RRC signaling. And after deciding that the current beam indication mode of a certain terminal is Downlink Control Information (DCI) plus high-level signaling, the base station informs the terminal through RRC signaling. Further, as shown in fig. 3, the base station sends the beam information of the N-bit reception beam and the information of the effective time length of the M-bit in the downlink control information of the nth slot of the terminal. If the effective time is k time slots, the downlink control information of the (n + 1), n +2, …, n + k-1) th time slot of the user does not have the beam information of the receiving beam, and the terminal selects the beam according to the beam information of the receiving beam of the nth time slot within the effective time length. Wherein N, k, N and M are positive integers.
Preferably, the beam information of the receiving beam is an index value in a preset beam set, or the beam information of the receiving beam is an index value of transmission configuration information; wherein the preset beam set comprises a plurality of receiving beams; the index in the preset beam set may also be implemented by direct indication or indirect indication, and is not particularly limited herein. The effective time length of the beam information is an index value in a preset effective time length set; wherein the preset valid time length set comprises a plurality of valid time lengths.
In the above embodiments of the present invention, the base station may pre-define a set a containing a plurality of receiving beam information and a preset active time length set B containing a plurality of active time lengths, and notify the terminal through RRC signaling. Correspondingly, the beam information in the downlink control information is an index value in the set a, and the effective time length of the beam information is an index value in the preset effective time length set B. It should be noted that the base station may update the set a and the preset valid time length set B through RRC signaling.
Further, after the terminal receives the change information of the beam indication mode through the high-layer signaling, the method further includes:
if the change information is used for changing the beam indication mode of the terminal into a high-level signaling indication, receiving beam information of a receiving beam sent by a base station through the high-level signaling, and selecting the receiving beam for downlink data after receiving the change information according to the beam information;
and if the change information is used for changing the beam indication mode of the terminal into a downlink control information indication, receiving second downlink control information which is sent by the base station and used for indicating the beam information of the received beam, and selecting the received beam for the downlink data after the change information is received according to the beam information in the second downlink control information.
In short, after the base station changes the beam indication mode of the terminal through the high-level signaling, both the base station and the terminal operate according to the changed beam indication mode, and the operating principle and the operating flow of the base station are consistent with those of the prior art and will not be described in detail here.
Bearing the above example, if the beam indication manner of the terminal does not need to be changed within the effective time length of the beam information, after the effective time length of the beam information arrives, the method further includes:
receiving third downlink control information which is sent by a base station and used for indicating the beam information of a receiving beam and the effective time length of the beam information;
and selecting a receiving beam for the downlink data within the effective time length of the beam information according to the beam information in the third downlink control information.
It should be further noted that the second downlink control information and the third downlink control information may both directly carry beam information of a received beam, or carry auxiliary information to indicate beam information of a received beam at intervals, and a specific manner is the same as that of the first downlink control information, which is not repeated herein.
As shown in fig. 3, the base station is configured to indicate beam information of a reception beam and an effective time length of the beam information in the downlink control information of the (n + k) th slot. In short, if the beam indication manner of the terminal does not need to be changed within the effective time length indicated by the downlink control information, the base station retransmits the beam information and the effective time length through the downlink control information in the first time slot after the previous effective time length is reached; if the effective time lengths of each transmission are equal effective time lengths, the base station periodically transmits beam information for indicating a receiving beam and downlink control information of the effective time lengths of the beam information to the terminal.
In summary, in the above embodiments of the present invention, the beam indication manner of the terminal is notified by the indication information, and when the beam indication manner of the terminal is a semi-static indication, first downlink control information is sent to the terminal, where the first downlink control information is used to indicate beam information of a received beam and an effective time length of the beam information, if the beam indication manner of the terminal does not change within the effective time length of the beam information, the base station does not need to send the beam information of the received beam through the downlink control information, so as to avoid waste of resources; further, if the beam indication mode of the terminal changes within the effective time length of the beam information, the base station may send the change information to the terminal through a high-level signaling, thereby dynamically implementing a rapid change of the beam indication method with less signaling.
As shown in fig. 5, an embodiment of the present invention further provides a beam indicating apparatus, including:
a first sending module 51, configured to send indication information to a target terminal, where the indication information is used to indicate a beam indication manner of the target terminal;
a second sending module 52, configured to send, to the target terminal, the beam information for indicating the received beam and the first downlink control information of the effective time length of the beam information when the indication information indicates that the beam indication manner of the target terminal is a semi-static indication.
Preferably, in the above embodiment of the present invention, the apparatus further includes:
a third sending module, configured to send, within the effective time duration of the beam information, change information of a beam indication manner to a target terminal through a high-level signaling; the change information is used for changing the beam indication mode of the target terminal into a high-level signaling indication or a downlink control information indication.
Preferably, in the above embodiment of the present invention, the apparatus further includes:
a fourth sending module, configured to send beam information of a received beam to the target terminal through a high-level signaling if the change information changes the beam indication mode of the target terminal to a high-level signaling indication;
a fifth sending module, configured to send, to the target terminal, second downlink control information for indicating beam information of a received beam if the change information changes the beam indication manner of the target terminal to a downlink control information indication.
Preferably, in the above embodiment of the present invention, the apparatus further includes:
a sixth sending module, configured to send, to the target terminal, third downlink control information for indicating the beam information of the received beam and the effective time length of the beam information after the effective time length of the beam information arrives.
Preferably, in the above embodiment of the present invention, the beam information of the receiving beam is an index value in a preset beam set, or the beam information of the receiving beam is an index value of transmission configuration information;
wherein the preset beam set comprises a plurality of receiving beams.
Preferably, in the above embodiment of the present invention, the effective time length of the beam information is an index value in a preset effective time length set;
wherein the preset valid time length set comprises a plurality of valid time lengths.
In summary, in the above embodiments of the present invention, the beam indication manner of the terminal is notified by the indication information, and when the beam indication manner of the terminal is a semi-static indication, first downlink control information is sent to the terminal, where the first downlink control information is used to indicate beam information of a received beam and an effective time length of the beam information, if the beam indication manner of the terminal does not change within the effective time length of the beam information, the base station does not need to send the beam information of the received beam through the downlink control information, so as to avoid waste of resources; further, if the beam indication mode of the terminal changes within the effective time length of the beam information, the base station may send the change information to the terminal through a high-level signaling, thereby dynamically implementing a rapid change of the beam indication method with less signaling.
It should be noted that, the beam indicating apparatus provided in the embodiments of the present invention is a beam indicating apparatus capable of executing the beam indicating method, and all embodiments of the beam indicating method are applicable to the beam indicating apparatus and can achieve the same or similar beneficial effects.
As shown in fig. 6, an embodiment of the present invention further provides a base station, which includes a processor 600 and a transceiver 610, where the processor 600 and the transceiver 610 are configured to perform the following processes:
the processor 600 controls the transceiver 610 to send indication information to a target terminal, where the indication information is used to indicate a beam indication mode of the target terminal;
when the indication information indicates that the beam indication mode of the target terminal is a semi-static indication, the transceiver 610 transmits beam information indicating a reception beam and first downlink control information indicating an effective time length of the beam information to the target terminal.
Preferably, in the above embodiments of the present invention, the transceiver 610 is further configured to:
sending the change information of the beam indication mode to a target terminal through a high-level signaling within the effective time length of the beam information; the change information is used for changing the beam indication mode of the target terminal into a high-level signaling indication or a downlink control information indication.
Preferably, in the above embodiments of the present invention, the transceiver 610 is further configured to:
if the change information changes the beam indication mode of the target terminal into a high-level signaling indication, the beam information of the received beam is sent to the target terminal through the high-level signaling;
and if the change information changes the beam indication mode of the target terminal into a downlink control information indication, sending second downlink control information for indicating the beam information of the received beam to the target terminal.
Preferably, in the above embodiments of the present invention, the transceiver 610 is further configured to:
and after the effective time length of the beam information is reached, transmitting third downlink control information for indicating the beam information of the received beam and the effective time length of the beam information to a target terminal.
Preferably, in the above embodiment of the present invention, the beam information of the receiving beam is an index value in a preset beam set, or the beam information of the receiving beam is an index value of transmission configuration information;
wherein the preset beam set comprises a plurality of receiving beams.
Preferably, in the above embodiment of the present invention, the effective time length of the beam information is an index value in a preset effective time length set;
wherein the preset valid time length set comprises a plurality of valid time lengths.
In summary, in the above embodiments of the present invention, the beam indication manner of the terminal is notified by the indication information, and when the beam indication manner of the terminal is a semi-static indication, first downlink control information is sent to the terminal, where the first downlink control information is used to indicate beam information of a received beam and an effective time length of the beam information, if the beam indication manner of the terminal does not change within the effective time length of the beam information, the base station does not need to send the beam information of the received beam through the downlink control information, so as to avoid waste of resources; further, if the beam indication mode of the terminal changes within the effective time length of the beam information, the base station may send the change information to the terminal through a high-level signaling, thereby dynamically implementing a rapid change of the beam indication method with less signaling.
It should be noted that, the base station provided in the embodiments of the present invention is a base station capable of executing the beam indicating method, and all embodiments of the beam indicating method are applicable to the base station and can achieve the same or similar beneficial effects.
As shown in fig. 7, an embodiment of the present invention further provides a beam selection apparatus, including:
a first receiving module 71, configured to receive indication information sent by a base station, where the indication information is used to indicate a beam indication manner of the terminal;
a second receiving module 72, configured to receive, when the indication information indicates that the beam indication manner of the terminal is a semi-static indication, beam information used for indicating a receiving beam and first downlink control information of an effective time length of the beam information, which are sent by a base station;
and a beam selection module 73, configured to select a receiving beam for downlink data within an effective time length of the beam information according to the beam information in the first downlink control information.
Preferably, in the above embodiment of the present invention, the apparatus further includes:
a third receiving module, configured to receive, within the effective time duration of the beam information, change information of a beam indication manner sent by a base station through a high-level signaling;
wherein the modification information is used for modifying the beam indication mode of the terminal into a high-level signaling indication or a downlink control information indication.
Preferably, in the above embodiment of the present invention, the apparatus further includes:
a fourth receiving module, configured to receive beam information of a received beam sent by the base station through a high-level signaling if the change information is used to change the beam indication mode of the terminal to a high-level signaling indication, and select a received beam for downlink data after receiving the change information according to the beam information;
a fifth receiving module, configured to receive, if the modification information is used to modify the beam indication mode of the terminal to a downlink control information indication, second downlink control information sent by the base station and used to indicate beam information of a received beam, and select a received beam for downlink data after receiving the modification information according to the beam information in the second downlink control information.
Preferably, in the above embodiment of the present invention, the apparatus further includes:
a sixth receiving module, configured to receive, after the effective time length of the beam information arrives, third downlink control information that is sent by a base station and used for indicating the beam information of the received beam and the effective time length of the beam information;
and selecting a receiving beam for the downlink data within the effective time length of the beam information according to the beam information in the third downlink control information.
Preferably, in the above embodiment of the present invention, the beam information of the receiving beam is an index value in a preset beam set, or the beam information of the receiving beam is an index value of transmission configuration information;
the preset beam set comprises a plurality of receiving beams.
Preferably, in the above embodiment of the present invention, the effective time length of the beam information is an index value in a preset effective time length set;
wherein the preset valid time length set comprises a plurality of valid time lengths.
In summary, in the above embodiments of the present invention, the beam indication manner of the terminal is notified by the indication information, and when the beam indication manner of the terminal is a semi-static indication, first downlink control information is sent to the terminal, where the first downlink control information is used to indicate beam information of a received beam and an effective time length of the beam information, if the beam indication manner of the terminal does not change within the effective time length of the beam information, the base station does not need to send the beam information of the received beam through the downlink control information, so as to avoid waste of resources; further, if the beam indication mode of the terminal changes within the effective time length of the beam information, the base station may send the change information to the terminal through a high-level signaling, thereby dynamically implementing a rapid change of the beam indication method with less signaling.
It should be noted that the beam selection apparatus provided by the above embodiments of the present invention is a beam selection apparatus capable of performing the above beam selection method, and all embodiments of the above beam selection method are applicable to the beam selection apparatus and can achieve the same or similar beneficial effects.
As shown in fig. 8, an embodiment of the present invention further provides a terminal, which includes a processor 800, a transceiver 810, and a user interface 820, where the transceiver 810 is configured to perform the following processes:
receiving indication information sent by a base station, wherein the indication information is used for indicating a beam indication mode of the terminal;
when the indication information indicates that the beam indication mode of the terminal is semi-static indication, receiving beam information used for indicating a receiving beam and first downlink control information of the effective time length of the beam information, which are sent by a base station;
the processor 800 is configured to perform the following processes:
and selecting a receiving beam for the downlink data within the effective time length of the beam information according to the beam information in the first downlink control information.
Preferably, in the above embodiments of the present invention, the transceiver 810 is further configured to:
receiving the change information of the beam indication mode sent by the base station through high-level signaling within the effective time length of the beam information;
wherein the modification information is used for modifying the beam indication mode of the terminal into a high-level signaling indication or a downlink control information indication.
Preferably, in the above embodiments of the present invention, the transceiver 810 is further configured to:
if the change information is used for changing the beam indication mode of the terminal into a high-level signaling indication, receiving beam information of a receiving beam sent by a base station through the high-level signaling; the processor is further configured to: selecting a receiving beam for the downlink data after receiving the change information according to the beam information;
if the change information is used for changing the beam indication mode of the terminal into a downlink control information indication, receiving second downlink control information which is sent by a base station and used for indicating the beam information of the received beam; the processor is further configured to: and selecting a receiving beam for the downlink data after receiving the change information according to the beam information in the second downlink control information.
Preferably, in the above embodiments of the present invention, the transceiver 810 is further configured to:
after the effective time length of the beam information is reached, receiving third downlink control information which is sent by a base station and used for indicating the beam information of the received beam and the effective time length of the beam information;
the processor 800 is further configured to: and selecting a receiving beam for the downlink data within the effective time length of the beam information according to the beam information in the third downlink control information.
Preferably, in the above embodiment of the present invention, the beam information of the receiving beam is an index value in a preset beam set, or the beam information of the receiving beam is an index value of transmission configuration information;
the preset beam set comprises a plurality of receiving beams.
Preferably, in the above embodiment of the present invention, the effective time length of the beam information is an index value in a preset effective time length set;
wherein the preset valid time length set comprises a plurality of valid time lengths.
In summary, in the above embodiments of the present invention, the beam indication manner of the terminal is notified by the indication information, and when the beam indication manner of the terminal is a semi-static indication, first downlink control information is sent to the terminal, where the first downlink control information is used to indicate beam information of a received beam and an effective time length of the beam information, if the beam indication manner of the terminal does not change within the effective time length of the beam information, the base station does not need to send the beam information of the received beam through the downlink control information, so as to avoid waste of resources; further, if the beam indication mode of the terminal changes within the effective time length of the beam information, the base station may send the change information to the terminal through a high-level signaling, thereby dynamically implementing a rapid change of the beam indication method with less signaling.
It should be noted that the terminal provided in the above embodiments of the present invention is a terminal capable of performing the above beam selection method, and all embodiments of the above beam selection method are applicable to the terminal and can achieve the same or similar beneficial effects.
An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored, and when the computer program is executed by a processor, the computer program implements each process in the beam indicating method or the beam selecting method embodiment described above, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-readable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block or blocks.
These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (23)

1. A method for beam indication, comprising:
sending indication information to a target terminal, wherein the indication information is used for indicating a beam indication mode of the target terminal;
when the indication information indicates that the beam indication mode of the target terminal is semi-static indication, sending beam information for indicating a receiving beam and first downlink control information of the effective time length of the beam information to the target terminal;
wherein the method further comprises:
sending the change information of the beam indication mode to a target terminal through a high-level signaling within the effective time length of the beam information; the change information is used for changing the beam indication mode of the target terminal into a high-level signaling indication or a downlink control information indication.
2. The method of claim 1, further comprising:
if the change information changes the beam indication mode of the target terminal into a high-level signaling indication, the beam information of the received beam is sent to the target terminal through the high-level signaling;
and if the change information changes the beam indication mode of the target terminal into a downlink control information indication, sending second downlink control information for indicating the beam information of the received beam to the target terminal.
3. The method of claim 1, further comprising:
and after the effective time length of the beam information is reached, transmitting third downlink control information for indicating the beam information of the received beam and the effective time length of the beam information to a target terminal.
4. The method according to any one of claims 1-3, wherein the beam information of the receiving beam is an index value in a preset beam set, or the beam information of the receiving beam is an index value of transmission configuration information; wherein the preset beam set comprises a plurality of receiving beams.
5. The method according to claim 1 or 3, wherein the effective time length of the beam information is an index value in a preset effective time length set;
wherein the preset valid time length set comprises a plurality of valid time lengths.
6. A method of beam selection, comprising:
receiving indication information sent by a base station, wherein the indication information is used for indicating a beam indication mode of a terminal;
when the indication information indicates that the beam indication mode of the terminal is semi-static indication, receiving beam information used for indicating a receiving beam and first downlink control information of the effective time length of the beam information, which are sent by a base station;
selecting a receiving beam for downlink data within the effective time length of the beam information according to the beam information in the first downlink control information;
wherein the method further comprises:
receiving the change information of the beam indication mode sent by the base station through high-level signaling within the effective time length of the beam information;
wherein the modification information is used for modifying the beam indication mode of the terminal into a high-level signaling indication or a downlink control information indication.
7. The method of claim 6, further comprising:
if the change information is used for changing the beam indication mode of the terminal into a high-level signaling indication, receiving beam information of a receiving beam sent by a base station through the high-level signaling, and selecting the receiving beam for downlink data after receiving the change information according to the beam information;
and if the change information is used for changing the beam indication mode of the terminal into a downlink control information indication, receiving second downlink control information which is sent by the base station and used for indicating the beam information of the received beam, and selecting the received beam for the downlink data after the change information is received according to the beam information in the second downlink control information.
8. The method of claim 6, further comprising:
after the effective time length of the beam information is reached, receiving third downlink control information which is sent by a base station and used for indicating the beam information of the received beam and the effective time length of the beam information;
and selecting a receiving beam for the downlink data within the effective time length of the beam information according to the beam information in the third downlink control information.
9. The method according to any of claims 6-8, wherein the beam information of the receiving beam is an index value in a preset beam set, or the beam information of the receiving beam is an index value of transmission configuration information;
the preset beam set comprises a plurality of receiving beams.
10. The method according to claim 6 or 7, wherein the effective time length of the beam information is an index value in a preset effective time length set;
wherein the preset valid time length set comprises a plurality of valid time lengths.
11. A beam indicating apparatus, comprising:
a first sending module, configured to send indication information to a target terminal, where the indication information is used to indicate a beam indication mode of the target terminal;
a second sending module, configured to send, to the target terminal, first downlink control information for indicating beam information of a received beam and an effective time length of the beam information when the indication information indicates that a beam indication manner of the target terminal is a semi-static indication;
wherein the apparatus further comprises:
a third sending module, configured to send, within the effective time duration of the beam information, change information of a beam indication manner to a target terminal through a high-level signaling; the change information is used for changing the beam indication mode of the target terminal into a high-level signaling indication or a downlink control information indication.
12. A base station comprising a processor and a transceiver, wherein the processor and the transceiver are configured to perform the following:
the processor controls the transceiver to send indication information to a target terminal, wherein the indication information is used for indicating a beam indication mode of the target terminal;
when the indication information indicates that the beam indication mode of the target terminal is semi-static indication, the transceiver sends beam information for indicating a receiving beam and first downlink control information of the effective time length of the beam information to the target terminal;
wherein the transceiver is further configured to:
sending the change information of the beam indication mode to a target terminal through a high-level signaling within the effective time length of the beam information; the change information is used for changing the beam indication mode of the target terminal into a high-level signaling indication or a downlink control information indication.
13. The base station of claim 12, wherein the transceiver is further configured to:
if the change information changes the beam indication mode of the target terminal into a high-level signaling indication, the beam information of the received beam is sent to the target terminal through the high-level signaling;
and if the change information changes the beam indication mode of the target terminal into a downlink control information indication, sending second downlink control information for indicating the beam information of the received beam to the target terminal.
14. The base station of claim 12, wherein the transceiver is further configured to:
and after the effective time length of the beam information is reached, transmitting third downlink control information for indicating the beam information of the received beam and the effective time length of the beam information to a target terminal.
15. The base station according to any of claims 12-14, wherein the beam information of the receiving beam is an index value in a preset beam set, or the beam information of the receiving beam is an index value of transmission configuration information;
wherein the preset beam set comprises a plurality of receiving beams.
16. The base station according to claim 12 or 14, wherein the effective time length of the beam information is an index value in a preset effective time length set;
wherein the preset valid time length set comprises a plurality of valid time lengths.
17. A beam selection apparatus, comprising:
a first receiving module, configured to receive indication information sent by a base station, where the indication information is used to indicate a beam indication mode of a terminal;
a second receiving module, configured to receive, when the indication information indicates that a beam indication manner of the terminal is a semi-static indication, beam information used for indicating a receiving beam and first downlink control information of an effective time length of the beam information, where the first downlink control information is sent by a base station;
a beam selection module, configured to select a receiving beam for downlink data within an effective time length of beam information according to the beam information in the first downlink control information;
wherein the apparatus further comprises:
a third receiving module, configured to receive, within the effective time duration of the beam information, change information of a beam indication manner sent by a base station through a high-level signaling;
wherein the modification information is used for modifying the beam indication mode of the terminal into a high-level signaling indication or a downlink control information indication.
18. A terminal comprising a processor and a transceiver, wherein the transceiver is configured to perform the following:
receiving indication information sent by a base station, wherein the indication information is used for indicating a beam indication mode of a terminal;
when the indication information indicates that the beam indication mode of the terminal is semi-static indication, receiving beam information used for indicating a receiving beam and first downlink control information of the effective time length of the beam information, which are sent by a base station;
the processor is used for executing the following processes:
selecting a receiving beam for downlink data within the effective time length of the beam information according to the beam information in the first downlink control information;
wherein the transceiver is further configured to:
receiving the change information of the beam indication mode sent by the base station through high-level signaling within the effective time length of the beam information;
wherein the modification information is used for modifying the beam indication mode of the terminal into a high-level signaling indication or a downlink control information indication.
19. The terminal of claim 18, wherein the transceiver is further configured to:
if the change information is used for changing the beam indication mode of the terminal into a high-level signaling indication, receiving beam information of a receiving beam sent by a base station through the high-level signaling; the processor is further configured to: selecting a receiving beam for the downlink data after receiving the change information according to the beam information;
if the change information is used for changing the beam indication mode of the terminal into a downlink control information indication, receiving second downlink control information which is sent by a base station and used for indicating the beam information of the received beam; the processor is further configured to: and selecting a receiving beam for the downlink data after receiving the change information according to the beam information in the second downlink control information.
20. The terminal of claim 18, wherein the transceiver is further configured to:
after the effective time length of the beam information is reached, receiving third downlink control information which is sent by a base station and used for indicating the beam information of the received beam and the effective time length of the beam information;
the processor is further configured to: and selecting a receiving beam for the downlink data within the effective time length of the beam information according to the beam information in the third downlink control information.
21. The terminal according to any of claims 18-20, wherein the beam information of the receiving beam is an index value in a preset beam set, or the beam information of the receiving beam is an index value of transmission configuration information;
the preset beam set comprises a plurality of receiving beams.
22. The terminal according to claim 18 or 20, wherein the effective time length of the beam information is an index value in a preset effective time length set;
wherein the preset valid time length set comprises a plurality of valid time lengths.
23. A computer readable storage medium, having stored thereon a computer program, characterized in that the program, when being executed by a processor, carries out the steps in the beam indicating method according to any one of claims 1-5; alternatively, the first and second electrodes may be,
the program when executed by a processor implements the steps in the beam selection method according to any of claims 6-10.
CN201810234820.5A 2018-03-21 2018-03-21 Beam indication method, beam selection method, device, base station and terminal Active CN110300451B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201810234820.5A CN110300451B (en) 2018-03-21 2018-03-21 Beam indication method, beam selection method, device, base station and terminal
PCT/CN2019/077627 WO2019179323A1 (en) 2018-03-21 2019-03-11 Method and device for beam indication, method and device for beam selection, base station, and terminal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810234820.5A CN110300451B (en) 2018-03-21 2018-03-21 Beam indication method, beam selection method, device, base station and terminal

Publications (2)

Publication Number Publication Date
CN110300451A CN110300451A (en) 2019-10-01
CN110300451B true CN110300451B (en) 2021-09-10

Family

ID=67988214

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810234820.5A Active CN110300451B (en) 2018-03-21 2018-03-21 Beam indication method, beam selection method, device, base station and terminal

Country Status (2)

Country Link
CN (1) CN110300451B (en)
WO (1) WO2019179323A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117042154A (en) * 2022-04-29 2023-11-10 大唐移动通信设备有限公司 Beam indication method, device, repeater, host base station and storage medium
CN117651255B (en) * 2024-01-29 2024-06-14 上海卫星互联网研究院有限公司 Signal sending method, device and base station

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104734760A (en) * 2013-12-20 2015-06-24 中兴通讯股份有限公司 Method, device and system for processing downlink wave beam index
WO2017039504A1 (en) * 2015-09-02 2017-03-09 Telefonaktiebolaget Lm Ericsson (Publ) Radio network nodes and methods for enabling mobility between said nodes
CN106793125A (en) * 2017-01-06 2017-05-31 宇龙计算机通信科技(深圳)有限公司 beam configuration method and beam configuration device
CN107534467A (en) * 2015-04-17 2018-01-02 华为技术有限公司 Transmit method, base station and the user equipment of information
CN107733477A (en) * 2016-08-12 2018-02-23 华为技术有限公司 A kind of beam configuration and management method based on multipoint cooperative

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104734761A (en) * 2013-12-20 2015-06-24 中兴通讯股份有限公司 Uplink and downlink wave beam mixture indicating method, base station, terminal and system
CN107733498B (en) * 2016-08-11 2021-02-12 上海诺基亚贝尔股份有限公司 Method and network device for port mapping for DMRS-based TxD transmission

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104734760A (en) * 2013-12-20 2015-06-24 中兴通讯股份有限公司 Method, device and system for processing downlink wave beam index
CN107534467A (en) * 2015-04-17 2018-01-02 华为技术有限公司 Transmit method, base station and the user equipment of information
WO2017039504A1 (en) * 2015-09-02 2017-03-09 Telefonaktiebolaget Lm Ericsson (Publ) Radio network nodes and methods for enabling mobility between said nodes
CN107733477A (en) * 2016-08-12 2018-02-23 华为技术有限公司 A kind of beam configuration and management method based on multipoint cooperative
CN106793125A (en) * 2017-01-06 2017-05-31 宇龙计算机通信科技(深圳)有限公司 beam configuration method and beam configuration device

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
Discussion on beam indication for PDSCH;Samsung;《3GPP TSG RAN WG1 Meeting NR#3,R1-1715961》;20170921;第3节 *
Discussion on beam indication for PDSCH;Samsung;《3GPP TSG RAN WG1 NR Ad-Hoc#2,R1-1710659》;20170630;第3节 *

Also Published As

Publication number Publication date
CN110300451A (en) 2019-10-01
WO2019179323A1 (en) 2019-09-26

Similar Documents

Publication Publication Date Title
US11336359B2 (en) Beam switching method and related device
Saad et al. Advancements in vehicular communication technologies: C-V2X and NR-V2X comparison
US11665691B2 (en) Communications devices and methods
CN101161024B (en) Mobile communication system, mobile station, base station and communication control method
US20220052822A1 (en) Data transmission method and device
CN111586858B (en) Signal transmission method and communication device
US8416800B2 (en) Multi-carrier allocation using reciprocal nature of uplink and downlink in time division duplex to use just uplink pilots
CN111034315B (en) Techniques for forwarding resource allocation
JP4801740B2 (en) Wireless communication system
CN107734686B (en) Method, device, base station and terminal for sending and receiving downlink control signaling
EP3984309A1 (en) Over-the-air interference coordination among base stations
CN110300451B (en) Beam indication method, beam selection method, device, base station and terminal
US20190289481A1 (en) Network node and client device for measuring channel state information
US11405923B2 (en) Method and device for sending downlink control information, and method and device for detecting downlink control information
CN110535593A (en) Signal transmission, resource determining method, device, terminal, base station and storage medium
US20110038399A1 (en) Method for data transmission and communication system
CN110740509A (en) data transmission method, network device, communication device and storage medium
US20200120647A1 (en) Message transmission method and apparatus, terminal, and base station
CN114747281A (en) Time-frequency block cancellation
CN108353324A (en) The method and communication system of converting transmission time interval, user equipment and base station
CN107026706B (en) Data transmission method, system, base station and terminal
CN110247685B (en) Beam indication method, data transmission method, device, base station and terminal
US20220278725A1 (en) Method and device for channel state indication on unlicensed spectrum
Liberg et al. Introducing 5G Advanced
CN111149401A (en) Techniques for resource allocation indication

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant