CN111510190B - Beam processing method and device - Google Patents
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- H—ELECTRICITY
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Abstract
The present application relates to the field of mobile communications, and in particular, to beamforming techniques in a communication system. In a beam processing method, a plurality of continuous symbols to be transmitted in a beam form are acquired, and if a switching interval for switching between uplink and downlink is included in the plurality of continuous symbols, a message for notifying information of beam switching by a base station at the switching interval to a user equipment in a cell is transmitted to the user equipment. By the scheme provided by the application, the time overhead of beam switching can be reduced.
Description
Technical Field
The present application relates to the field of communications technologies, and in particular, to beamforming technologies in a communications system.
Background
Beamforming technology is a combination of wireless technology and digital signal processing technology, the purpose of which is to achieve directional transmission of signals or reception of directional signals.
Since the beam emitted by the base station adopting the beam forming technology has directivity, only the user equipment in the direction of the emitted beam can receive the signal sent by the base station with higher signal to noise ratio. Therefore, in order to enable the base station signal to cover all cells of the base station in its entirety, the base station needs to perform beam switching constantly, i.e. to form beams of different directions by changing the beam transmission direction. Beamforming techniques include two broad categories, digital beamforming and analog beamforming, with analog beamforming having lower complexity and cost. However, each switch of the analog beam needs to occupy a certain time, which results in excessive time overhead of beam switching.
Disclosure of Invention
The application provides a beam processing method and a base station, so as to reduce the overhead of beam switching.
In order to achieve the above purpose, the present application provides the following technical solutions:
in one aspect, the present application provides a beam processing method, including: a base station acquires a plurality of continuous symbols to be transmitted in a beam form; if a switching interval for switching between uplink and downlink is included in the plurality of continuous symbols, a message for informing the user equipment of the information of beam switching by the base station at the switching interval is transmitted to the user equipment within the cell.
From the above aspect, it can be seen that if a plurality of consecutive symbols to be transmitted in the form of analog beams include a switching interval for performing uplink and downlink switching, the time occupied by the switching interval is taken as the time for performing beam switching, and is notified to the user equipment, so that the time for performing uplink and downlink switching by the multiplexing base station is realized to perform beam switching, and therefore, there is no need to separately reserve the beam switching time at the symbol of the switching interval, which is beneficial to reducing the time overhead of beam switching.
In one possible design, after the base station sends the message to the ue in the cell, the base station sends the multiple continuous symbols sequentially, and if the symbol to be sent currently is the switching interval, performs beam switching in a duration corresponding to the switching interval. When the base station determines that the current signal to be transmitted is a switching interval, beam switching is performed at the time length corresponding to the switching interval, and the time length corresponding to the switching interval is multiplexed as the time length of beam switching, so that the beam switching time can be reduced.
In one possible design, the transition interval includes: a time interval for uplink to downlink conversion; or a guard interval for a downlink to uplink transition.
In one possible design, after acquiring a plurality of continuous symbols to be transmitted in an analog beam form, a base station determines a target symbol in the plurality of continuous symbols, where a duration corresponding to the target symbol is a preset duration for performing beam switching; wherein the target symbol is set in the plurality of consecutive symbols by: sequentially determining to-be-determined symbol positions of the beam switching time to be reserved in symbol positions corresponding to a plurality of continuous symbols according to the front-to-back sequence of the plurality of continuous symbols and the preset number of symbol intervals; if a switching interval exists in the plurality of continuous symbols, determining a target symbol bit which is not adjacent to the switching interval from the to-be-determined symbol bits, and setting the target symbol bit as the target symbol, so that the beam switching time does not need to be reserved at the to-be-determined position adjacent to the switching interval, and the reserved beam switching time can be reduced; in this way, the message sent to the UE may also be used to inform the user equipment of the information that the base station performs beam switching at the target symbol.
In one possible design, the message may be transmitted to users within the cell over a physical downlink control channel or higher layer radio resource control.
In one possible design, the message is used to inform the user equipment of an identification signal employed by a last transmit beam prior to the switch interval and the identification signal employed by a last transmit beam after the switch interval symbol; wherein the identification signal comprises: one or more of a common reference signal, a status information reference signal, or a discovery signal.
On the other hand, the embodiment of the invention provides a base station which has the function of realizing the base station behavior in the actual method. The functions may be implemented by hardware, or may be implemented by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the functions described above.
In one possible design, the base station includes a processor and a transmitter, the processor configured to support the base station to perform the corresponding functions of the above-described method; the transmitter is used for supporting communication between the base station and the UE and sending information or instructions related to the method to the UE. The base station may also include a memory for coupling with the processor that holds the program instructions and data necessary for the base station.
In addition, the above base station may be other wireless network devices, and the UE may be other wireless network devices, for example, the base station may be a first wireless network device, the UE may be a second wireless network device, and the first wireless network device and the second wireless network device may perform the methods provided above, where the first wireless network device may include a processor and a transceiver, and the processor is configured to support the first wireless network device to perform the corresponding functions in the methods described above; the transmitter is configured to support communication between the first wireless network device and the second wireless network device, and to transmit information or instructions related to the above method to the second wireless network device. The base station may also include a memory for coupling with the processor that holds the program instructions and data necessary for the first wireless network device.
Compared with the prior art, the scheme provided by the invention can reduce the overhead of beam switching.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the description of the embodiments will be briefly described below.
FIG. 1 illustrates an architecture diagram of a communication system of the present application;
fig. 2a is a schematic structural diagram of a base station in the communication system shown in fig. 1;
fig. 2b is a schematic structural diagram of a user equipment in the communication system shown in fig. 1;
FIG. 3 is a schematic diagram of hybrid beamforming;
FIG. 4 is a flow diagram of one embodiment of a beam processing method of the present application;
FIG. 5 is a flow chart illustrating one implementation of the present application for setting a target symbol in symbol bits corresponding to a plurality of consecutive symbols;
fig. 6 shows a schematic structural diagram of an embodiment of a base station of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.
The technical solution of the embodiment of the application can be specifically applied to various communication networks, for example: global system for mobile communications (Global System of Mobile communication, abbreviated as "GSM"), code division multiple access (Code Division Multiple Access, abbreviated as "CDMA") systems, wideband code division multiple access (Wideband Code Division Multiple Access Wireless, abbreviated as "WCDMA"), general packet radio service (GPRS, general Packet Radio Service), long term evolution (Long Term Evolution, abbreviated as "LTE"), future networks such as 5g, d2d (device to device) networks, M2M (machine to machine) networks, and the like.
The User Equipment (UE) referred to in the present application may also be referred to as a Terminal, a Mobile Station (MS), a Mobile Terminal, or the like. Which may communicate with one or more core networks via a radio access network, such as RAN, radio Access Network, and user equipment may be mobile terminals, such as mobile telephones (or "cellular" telephones) and computers with mobile terminals, as well as portable, pocket, hand-held, computer-built-in, or vehicle-mounted mobile devices that exchange voice and/or data with the radio access network. In this embodiment of the present application, the base station may be a base station in GSM or CDMA, such as a base transceiver station (Base Transceiver Station, abbreviated as "BTS"), a base station in WCDMA, such as a NodeB, an evolved base station in LTE, such as an eNB or e-NodeB (evolutional Node B), or a base station in a future network, which is not limited in this embodiment.
The application scenario of the embodiment of the present invention is described below. Referring to fig. 1, fig. 1 is an architecture diagram of a communication system according to an embodiment of the present application. Specifically, the communication system includes a base station and at least one user equipment (only user equipment 1, user equipment 2 and user equipment 3 are shown in the figure), and the base station and the user equipment communicate with each other through a radio signal, where the radio signal is composed of subframes including a plurality of symbols.
It should be understood that only one base station (an orphan base station) is shown in the communication system architecture shown in fig. 1, but the present application is not limited thereto. Besides the base station, the communication system can also comprise a neighbor base station and user equipment for transmitting service on the same time-frequency resource, and the coverage area of each base station can also comprise other user equipment. Further optionally, the wireless communication system in which the base station and the ue in fig. 1 are located may further include other network entities such as a network controller, a mobility management entity, and the embodiment of the present application is not limited.
Further, referring to fig. 2a and fig. 2b together, fig. 2a is a schematic structural diagram of a base station in the communication system shown in fig. 1. As shown in fig. 2a, the base station may include an antenna array, a duplexer, a Transmitter (abbreviated as "TX"), a Receiver (abbreviated as "RX") (TX and RX may be collectively referred to as transceiver TRX), and a baseband processing section. The duplexer is used for realizing an antenna array, and can be used for transmitting signals and receiving signals. TX is used to achieve conversion between a radio frequency signal and a baseband signal, and may generally include a Power Amplifier (PA), a digital-to-analog converter (Digital to Analog Converter, DAC), and a frequency converter. Typically, RX may include a Low-Noise Amplifier (LNA), an analog-to-digital converter (Analog to Digital Converter, ADC) and a frequency converter. The baseband processing section is for realizing processing of transmitted or received signals such as layer mapping, precoding, modulation/demodulation, encoding/coding, etc., and performs separate processing for physical control channels, physical data channels, physical broadcast channels, reference signals, etc. Further, the base station may further include a control section for performing multi-user scheduling and resource allocation, pilot scheduling, user physical layer parameter configuration, and the like.
As shown in fig. 2b, fig. 2b is a schematic structural diagram of a user equipment in the communication system shown in fig. 1. The user equipment may include an antenna, a duplexer, TX and RX (TX and RX may be collectively referred to as transceiver TRX), and a baseband processing section. As shown in fig. 2b, the user equipment has multiple antennas (i.e., antenna arrays). It should be understood that the user equipment may also have a single antenna. The diplexer enables the antenna array to be used for both transmitting and receiving signals. TX is used to effect conversion between radio frequency signals and baseband signals, and may typically include a PA, DAC and frequency converter, and RX may typically include an LNA, ADC and frequency converter. The baseband processing section is for realizing processing of transmitted or received signals, such as layer mapping, precoding, modulation/demodulation, encoding/decoding, etc., and performs separate processing for physical control channels, physical data channels, physical broadcast channels, reference signals, etc. Further, the ue may further include a control part for requesting uplink physical resources, calculating channel state information (Channel State Information, abbreviated as "CSI") corresponding to the downlink channel, determining whether the downlink packet is received successfully, and the like.
The base station side and/or the user side uses beamforming techniques to enhance coverage by configuring an antenna array. The beamforming of the antenna array includes an analog beam and a mixed beam formed by the antenna array. Further, referring to fig. 3, fig. 3 is a schematic diagram of hybrid beamforming. As shown in fig. 3, the baseband processing section performs general baseband digital signal processing including CRC checking, encoding, modulation, scrambling, digital beamforming, and the like; the digital signal after baseband processing is sent to a Radio Frequency (RF) link (only two RF links are drawn in the figure, and in practical application, one or more RF links can be included), and the functions of up-sampling, transmitting, shaping, filtering, clipping, analog-digital conversion and the like are completed by the transmitting RF link; the analog signal after radio frequency processing is sent to a plurality of power amplifiers, phase shifters and antenna units for analog beam forming; the baseband processing part can realize the transmission of signals with certain directivity by controlling the phase of the radio frequency phase shifter. The directivity refers to the propagation directivity of electromagnetic wave energy, and a signal having directivity, which is synthesized by a plurality of analog phase shifters, is called an analog beam. Radio frequency phase shifters are typically implemented by delay lines or PIN diodes, which require a certain amount of time to adjust the phase, and therefore the effect of beam switching time must be taken into account when designing the communication protocol.
Because each beam switching needs to occupy a certain time, in the process of transmitting a plurality of continuous symbols in an analog beam form, the switching time of each beam switching needs to be reserved once every preset number of symbols, so that the beam switching occupies a relatively long time.
The embodiments of the present application will be described in further detail below based on the above-described common aspects related to the present application.
The embodiment of the application provides a beam processing method and a base station based on the method. The base station acquires a plurality of symbols to be transmitted in a beam form, and if a switching interval for switching between uplink and downlink exists in the plurality of symbols, a message is transmitted to the UE, wherein the message is used for notifying the UE of information of beam switching of the base station at the switching interval.
If a switching interval for switching between uplink and downlink is included in a plurality of consecutive symbols to be transmitted, since a downlink to uplink or an uplink to downlink switching is required at the switching interval, a time period occupied by the switching interval is set to be longer, and the time period occupied by the switching interval is longer than a time period required for beam switching. Therefore, when the base station performs downlink-to-uplink or uplink-to-downlink conversion at the conversion interval, the base station does not need to consume the time of beam switching alone, so that the time occupied by the conversion interval is multiplexed to perform beam switching, and the time cost of beam switching is reduced on the premise of increasing the frequency of beam switching.
The scheme provided in the embodiment of the present application is described below with reference to fig. 4.
As shown in fig. 4, the beam processing method provided in the embodiment of the present application includes:
a plurality of consecutive symbols to be transmitted in an analog beam is acquired 401.
The obtained plurality of continuous symbols may be the same as symbols in the existing analog beam or the hybrid analog beam transmission, for example, the plurality of continuous symbols may be one subframe, which is not described herein.
And 402, if at least one switching interval for switching between uplink and downlink is included in the plurality of continuous symbols, sending a message to user equipment in a cell.
The message is used for notifying the information of beam switching of the base station at the switching interval to the UE. The UE in the embodiment of the present application is a UE in a cell covered by the base station.
If the plurality of continuous symbols include a switching interval, it is indicated that the frame or the subframe formed by the plurality of continuous symbols includes both downlink symbols and uplink symbols, and the base station needs to perform switching between uplink and downlink in a time interval corresponding to the switching interval. The conversion between uplink and downlink may be an uplink-downlink conversion or a downlink-uplink conversion.
In this embodiment of the present application, the base station uses the duration of switching between uplink and downlink as the reserved beam switching time, that is, determines the time corresponding to the switching interval as the time of performing beam switching.
In the embodiment of the present application, if a plurality of consecutive symbols to be transmitted in an analog beam form include a switching interval for switching between uplink and downlink, a time corresponding to the switching interval is taken as a time for switching the beam, and is notified to the UE, so that the time for switching between uplink and downlink by the multiplexing base station is realized to switch the beam, and therefore, there is no need to reserve the time for switching the beam separately at the switching interval, which is beneficial to reducing the time for switching the beam.
Meanwhile, as the beam switching is performed by multiplexing the time of the switching interval, the beam cost is not increased, and when the switching interval for switching between uplink and downlink occurs in the plurality of continuous symbols, the beam switching times are increased on the premise of not increasing the beam switching cost, so that the abnormal signal receiving of the UE with slow tracking, large access delay and the like caused by overlarge beam switching period can be reduced.
It can be understood that after sending a message to a UE in a cell, the base station may send the plurality of continuous symbols, and when a symbol to be sent is a switching interval for performing switching between uplink and downlink, the base station performs switching between uplink and downlink in a duration corresponding to the switching interval; meanwhile, the base station performs beam switching within the duration corresponding to the switching interval, namely, changes the output direction of the beam by changing the phase of the phase shifter.
It is understood that the transition interval for performing the transition between uplink and downlink may be understood as a duration for performing the transition between uplink and downlink included in the plurality of consecutive symbols. The switching interval can be divided into two types: one is the time interval for the uplink to downlink transition. Another is a time interval for downlink to uplink switching, wherein the time interval for downlink to uplink switching may also be referred to as a Guard Period (GP).
In practical applications, the continuous multiple symbols may include only a time interval for uplink to downlink conversion, or only a guard interval; of course, there may be a case where a plurality of switching intervals are included in the continuous plurality of symbols, in which case the plurality of continuous symbols alternately occur with time intervals for downlink-to-uplink switching and time intervals for uplink-to-downlink switching. However, the base station does not perform beam transmission during uplink communication, and therefore, if beam switching is performed at both switching intervals of any adjacent downlink-uplink time interval and uplink-downlink time interval, it is meaningless that there is one beam switching in the two beam switching because only uplink symbols are not transmitted by the base station in the two beam switching performed at the two switching intervals.
In order to reduce meaningless beam switching, if a plurality of switching intervals for switching between uplink and downlink are included in the plurality of consecutive symbols, only the duration of one type of switching interval may be selected to be multiplexed as the duration of beam switching. For example, a duration corresponding to a guard interval symbol among the plurality of consecutive symbols may be taken as a duration for performing beam switching.
Considering that the base station performs the uplink to downlink conversion, the beam is transmitted, and therefore, the duration corresponding to the time interval for uplink to downlink conversion may be used as the duration for performing the beam switching, that is, if the plurality of consecutive symbols include the conversion interval for uplink to downlink conversion, a message is sent to the UE, where the message is used to notify the UE of the information of the base station performing the beam switching at the conversion interval for uplink to downlink conversion.
In practical application, when the number of symbols included in the acquired plurality of consecutive symbols is large, the plurality of consecutive symbols to be transmitted may include, in addition to a conversion interval for uplink/downlink conversion: and presetting a target symbol, wherein the duration corresponding to the target symbol is a preset duration for carrying out beam switching.
Then, after the plurality of consecutive symbols is acquired, a target symbol of the plurality of consecutive symbols may be determined. Correspondingly, the message sent by the base station to the UE is used for notifying the UE of the information of beam switching performed by the base station at the switching interval, and also used for notifying the UE of the information of beam switching performed by the base station within the duration corresponding to the target symbol.
It will be appreciated that the specific location and specific number of target symbols contained in the plurality of consecutive symbols may be set by the base station generating the plurality of consecutive symbols as desired. While there may be various implementations of placing one or more target symbols in the symbol bits corresponding to the plurality of consecutive symbols.
Optionally, reference may be made to fig. 5, which is a flow chart illustrating an implementation of setting a target symbol in symbol bits corresponding to a plurality of consecutive symbols, where the implementation of this implementation may include:
501, determining to-be-positioned symbol positions of the to-be-reserved beam switching time in symbol positions corresponding to the continuous symbols in sequence according to the preset symbol interval number based on the sequence of the continuous symbols.
At 502, if at least one transition interval exists in the plurality of consecutive symbols, a target symbol bit that is not adjacent to the transition interval is determined from the pending symbol bits, and the target symbol is set at the target symbol bit.
The duration corresponding to the target symbol is the duration for performing beam switching.
It can be understood that when the to-be-positioned symbol position is adjacent to the switch interval, the duration corresponding to the switch interval can be directly used as the duration required by the beam switching, so that the beam switching time does not need to be reserved at the to-be-positioned symbol position alone, therefore, the to-be-positioned symbol position adjacent to the switch interval does not need to be used as the position point for the beam switching, and only the to-be-positioned symbol position not adjacent to the switch interval and the switch interval need to be used as the position point for the beam switching.
After the target symbol bit is determined as the position point to be subjected to beam switching, the duration corresponding to the target symbol bit is the reserved beam switching duration.
Optionally, setting the target symbol in the target symbol bit may be understood as placing a blank time length, such as a blank symbol, for a set time length in the target symbol bit, where the set time length may be set according to a time length required for beam switching. After the blank symbol is set in the target symbol position, when beam switching is performed subsequently, beam switching can be performed within a set time length corresponding to the blank symbol.
Of course, it may be identified in other manners that the beam switching time is reserved in the target symbol bit, so that when the symbol to be transmitted is the target symbol in the process of transmitting the plurality of continuous symbols, the symbol is not transmitted in the duration corresponding to the target symbol, and the beam switching is performed only in the duration corresponding to the target symbol.
If the to-be-reserved symbol position of the to-be-reserved beam switching time determined from the symbol positions corresponding to the continuous symbols is adjacent to the switching interval in the continuous symbols according to the preset symbol interval, the time corresponding to the switching interval can be directly used as the to-be-reserved beam switching time of the to-be-reserved position point, so that the reserved beam switching time is reduced, and the time cost of beam switching is reduced.
In the embodiment of the present application, the switching interval may be all switching intervals for switching between uplink and downlink, or may be only switching intervals for switching from downlink to uplink; or simply GP.
In any of the above embodiments, after notifying the UE of the information of beam switching at the target symbol and at the switching interval, the base station may transmit to a plurality of consecutive symbols in the form of an analog beam. Specifically, the plurality of continuous symbols are sequentially transmitted; in transmitting the plurality of consecutive symbols, if a transition interval symbol or a preset target symbol is detected, a phase change of the phase shifter is controlled to realize beam direction switching.
It will be appreciated that in any of the above embodiments, the base station may inform the UE of the information of beam switching at the switching interval in a plurality of consecutive symbols in a variety of ways. Alternatively, the base station may send the message to the UE implicitly or explicitly, dynamically or semi-dynamically. The message may be used to transmit analog beam information to the UE before and after the switch interval, the analog beam information including analog beam identifications for distinguishing between the different analog beams. Of course, the base station may also send the message to the UE dynamically or semi-dynamically by implicit or explicit notification of the information of beam switching at the target symbol to the UE.
Analog beam information may be carried by a designated identification signal. For example, the analog beam information may be carried by cell-level reference signals (CRS, cell-specific reference signal) (also referred to as common reference signals). The base station may transmit CRS corresponding to an analog beam used to transmit different symbol segments of the plurality of consecutive symbol segments to user equipment within the cell. Correspondingly, when the analog beams corresponding to different symbol segments are distinguished by the beam identifications, the different analog beam identifications correspond to different common reference signals, namely the common reference signals and the analog beam identifications are in one-to-one correspondence.
Specifically, when the message is used to notify the UE of the information that the base station performs beam switching at the switching interval, the UE may be notified of the CRS used by the last transmitted beam before the switching interval, and of course, the UE may also be notified of the CRS used by the last transmitted beam after the switching interval. That is, among the plurality of continuous symbols, CRSs corresponding to each of the plurality of symbol segments divided by the transition interval are notified to the UE. Wherein the plurality of symbol segments are transmitted using beams of different transmission directions.
When the message is used for notifying the UE of the information of beam switching performed by the base station at the target symbol and the switching interval, the message may carry common reference signals corresponding to a plurality of target symbol segments in the plurality of continuous symbols. The target symbol section is a plurality of symbol sections which are cut out by a preset target symbol and the conversion interval in the plurality of continuous symbols.
When the message is used for notifying the UE of the information of beam switching of the base station at the target symbol, the UE can be notified of the CRS adopted by the last transmitted beam before the target symbol; and/or, notifying the UE of the CRS adopted by the last transmitted beam after the target symbol.
Of course, in addition to transmitting CRS to a UE, the base station may also transmit other identification signals to the UE, such as one or more of a Channel-state information Reference Signal (CSI-RS), or a discovery Signal (Discovery Reference Signal) to the UE. Wherein, the discovery signal may include at least one or more than one of CRS, CSI-RS, and primary and secondary synchronization signals.
It can be appreciated that, after the base station sends the information that the base station performs beam switching at the switching interval or the target symbol to the UE by sending a message to the UE, the UE can determine the beam switching situation of the base station. For example, the base station may notify the UE of the switching interval and the time corresponding to the target symbol while sending the message, and the UE combines the determined beam switching situation and the time when the beam changes, so that the UE may determine a time period of the analog beam that can be received, and further may set the UE to a sleep state in a time period when the UE does not need to receive the analog beam according to the need.
Of course, the UE may also perform other processing based on the message sent by the base station.
For example, in the case that CRS is included in the message, since the UE may determine the signal quality of the cell by measuring CRS. In the CRS measurement process, the CRS signal intensities of a plurality of subframes or even a plurality of frames are continuously measured, the average signal intensity of the measured CRS is calculated, and then the average signal intensity of the CRS is reported to the base station. Thus, when the CRS signals are transmitted by adopting the analog beams, the UE needs to distinguish the CRS signal intensities corresponding to different measured analog beams, count the CRS intensities of the analog beams in the beam transmitting direction where the UE is located, and report the CRS signal intensities to the base station; if the UE does not know that the beam transmission directions before and after the switching interval are different in the plurality of characters, the analog beams in different transmission directions before and after the switching interval are used as the same analog beam to calculate the average signal strength of the CRS, so that the average signal strength of the CRS reported to the base station is wrong.
It can be appreciated that the form of the base station transmitting the message can also have various forms, for example, the message can be dynamically transmitted through the signaling of the physical downlink control channel (PDCCH, physical Downlink Control Channel); as another example, the message may be signaling transmitted through the higher layer radio resource control (RRC, radio Resource Control).
The present application also provides an apparatus, which may be a base station, where the base station may implement operations performed by a base station side according to the foregoing embodiments.
As shown in fig. 6, a schematic diagram of the composition structure of the base station is shown. The base station may include: a processor 601 and a transmitter 602.
Wherein the processor 601 is configured to acquire a plurality of consecutive symbols to be transmitted in a beam form; if a transition interval for performing a transition between uplink and downlink is included in the plurality of consecutive symbols, the transmitter 602 is activated.
A transmitter 602 for sending a message to a user equipment within a cell, and supporting radio communication between the UE and other UEs, the message being used to inform the user equipment of the information of beam switching by the base station at the switching interval.
It will be appreciated that figure 6 shows only a simplified design of a base station. In practical applications, the base station may comprise any number of transceivers (which may also be divided into a receiver and a transmitter), processors, controllers, memories, etc., and all base stations that may implement the present invention are within the scope of the present invention.
Optionally, the processor is further configured to: and sequentially transmitting the plurality of continuous symbols, and if the symbol to be transmitted currently is the switching interval, performing beam switching in the duration corresponding to the switching interval.
Optionally, the conversion interval includes:
a time interval for uplink to downlink conversion;
or a guard interval for a downlink to uplink transition.
Optionally, the processor is further configured to: determining a target symbol in the plurality of continuous symbols, wherein the time length corresponding to the target symbol is a preset time length for carrying out beam switching; wherein the target symbol is set in the plurality of consecutive symbols by: sequentially determining to-be-positioned symbol positions of the to-be-reserved beam switching time in symbol positions corresponding to the continuous symbols according to the front-to-back sequence of the continuous symbols and the preset number of symbol intervals; if the conversion interval exists in the plurality of continuous symbols, determining a target symbol bit which is not adjacent to the conversion interval from the to-be-determined symbol bits, and setting the target symbol bit as the target symbol;
the message sent by the transmitter is also used to inform the user equipment of the information of beam switching by the base station at the target symbol.
Optionally, the processor sends a message to a user equipment in a cell, including:
and transmitting the message to the users in the cell through a physical downlink control channel or high-level radio resource control.
Optionally, the message is configured to notify the ue of an identification signal used by a last transmission beam before the switching interval and the identification signal used by a last transmission beam after the switching interval symbol, where the identification signal may include: one or more of a common reference signal, a status information reference signal, or a discovery signal.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. The present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. A method of beam processing, comprising:
receiving first information from a wireless network device, the first information indicating that the wireless network device performs beam switching at a switching interval for switching between uplink and downlink;
wherein the transition interval is included in a plurality of consecutive symbols;
determining that the wireless network equipment performs beam switching at the switching interval according to the first information;
further comprises:
and receiving the plurality of continuous symbols, and if the symbol to be received currently is the switching interval, determining that the wireless network equipment performs beam switching in the duration corresponding to the switching interval.
2. The method of claim 1, wherein the transition interval comprises:
a time interval for uplink to downlink conversion;
or a guard interval for a downlink to uplink transition.
3. The method according to claim 1 or 2, further comprising: receiving second information, wherein the second information is used for indicating the wireless network equipment to switch the wave beam in the duration corresponding to the target symbol;
the target symbol is included in the plurality of continuous symbols, and the duration corresponding to the target symbol is a preset duration for performing beam switching, and the target symbol is not adjacent to the switching interval.
4. A method according to claim 3, characterized in that the first information or the second information is carried in a physical downlink control channel or in higher layer radio resource control signaling.
5. The method as recited in claim 4, further comprising: receiving third information, the third information being used to indicate an identification signal used by a last transmission beam before the switching interval and the identification signal used by a last transmission beam after the switching interval symbol, wherein the identification signal includes: one or more of a common reference signal, a status information reference signal, or a discovery signal.
6. The method of claim 5, wherein one or more of the first information, the second information, or the third information are carried in the same message.
7. An apparatus for beam processing, comprising means for performing the method of any of claims 1-6.
8. The apparatus of claim 7, wherein the apparatus is a user equipment.
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| CN202010200080.0A CN111510190B (en) | 2015-11-24 | 2015-11-24 | Beam processing method and device |
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| WO2019028734A1 (en) * | 2017-08-10 | 2019-02-14 | Mediatek Singapore Pte. Ltd. | Apparatus and mechanism to perform beam management and beam failure recovery in nr system |
| US11088750B2 (en) * | 2018-02-16 | 2021-08-10 | Qualcomm Incorporated | Feedback of beam switch time capability |
| CN111615195B (en) * | 2019-04-08 | 2023-08-25 | 维沃移动通信有限公司 | Method and device for determining beam information and communication equipment |
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| WO2017088791A1 (en) | 2017-06-01 |
| CN111510190A (en) | 2020-08-07 |
| CN106792776B (en) | 2020-04-03 |
| CN106792776A (en) | 2017-05-31 |
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