CN112469121A - Broadcast channel indication method, equipment and communication system - Google Patents
Broadcast channel indication method, equipment and communication system Download PDFInfo
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Abstract
The application discloses a broadcast channel indication method, which comprises synchronous signal blocks on a synchronous grid on a plurality of frequency bands, wherein each synchronous signal block comprises first broadcast information used for indicating a control channel set associated with the current synchronous signal block; the control channel set is used for indicating the position of a time domain and a frequency domain for transmitting second broadcast information; the second broadcast information includes an identifier of the synchronization signal block on each frequency band, a frequency band in which each synchronization signal block is located, and indication information of a control channel set and a common search space associated with each synchronization signal block. The application also comprises a device and a communication system for implementing the method. The method and the device solve the problems that in the prior art, the terminal device has more signaling bytes and lower searching frequency grid efficiency in a satellite communication application scene.
Description
Technical Field
The present application relates to the field of wireless communication technologies, and in particular, to a method, a device, and a system for indicating a broadcast channel.
Background
The multiple antennas of the satellite may generate multiple beams. One beam of the satellite may be mapped into one cell or multiple beams may be mapped into one cell, wherein the second approach may avoid frequent cell handovers. If a cell contains multiple satellite beams and the satellite beams are mapped to different frequency bands, each frequency band may be associated with a fractional Bandwidth (BWP). For example, a satellite generates three beams, which are mapped to one cell, and different beams are transmitted at different BWPs, achieving frequency reuse with a frequency reuse factor of 3.
The current 5G NR standard uses beam management for terrestrial communication with multiple beams on the same frequency band, and related art standards for beam management have not been introduced in satellite communication scenarios. In the process of initial access of the mobile terminal, the terminal searches SSB, obtains broadcast information MIB on the optimal beam, determines the current beam, receives a control channel set (CORESET 0) related to the corresponding beam, obtains residual system information (SIB1) by data indicated by CORESET0, performs uplink random access according to SIB1 information, and completes RRC connection. The BWP where the terminal first camps is called initial BWP, and then a maximum of 4 BWPs are configured by RRC. Further, the terminal may be instructed to switch to a new BWP for data transceiving through downlink control signaling.
In the satellite scenario described above, different beams are located on different BWPs, unlike current standards, and therefore the SSB associated with the respective beam may exist on the BWP on which the beam is located. In this case, if the terminal performs synchronization in multiple frequency bands and accesses to the current beam, it first needs to indicate the BWP where the terminal is located; considering the mobility of the terminal, the terminal also needs to know the direction of the other beams and the BWP in which it is located. Therefore, there are many signaling bytes, and it is not easy to obtain all beam directions and BWP information.
Disclosure of Invention
The application provides a broadcast channel indication method, equipment and a communication system, and solves the problems that in the prior art, signaling bytes are more, and the efficiency of searching frequency grids is lower. In the scheme of the application, the terminal searches the synchronous signal to find the corresponding SSB; the patent also indicates to the terminal the direction of the other beams and the BWP in which they are located under one cell ID by means of broadcast information. The scheme of the application is particularly suitable for satellite communication systems.
In a first aspect, a broadcast channel indication method provided by the present application includes, on a synchronization grid over multiple frequency bands, synchronization signal blocks, each synchronization signal block including first broadcast information for indicating a control channel set associated with a current synchronization signal block;
the control channel set is used for indicating the position of a time domain and a frequency domain for transmitting second broadcast information;
the second broadcast information includes an identifier of a synchronization signal block on each frequency band, a frequency band in which each synchronization signal block is located, and indication information of a control channel set associated with each synchronization signal block.
Preferably, in the first broadcast information and the second broadcast information corresponding to the synchronization signal block, indication information of at least one of the following associated with any one synchronization signal block is the same in the same frequency band or different frequency bands: the multiplexing mode between the synchronous signal block and the control channel set, the position relation between the synchronous signal block and the control channel set, the resource amount occupied by the control channel set and the common search space where the control channel set is located. Further, the same indication information does not repeat the indication for the first broadcast information and the second broadcast information.
Preferably, the first broadcast information and the second broadcast information have different information indicating a common search space for a set of control channels corresponding to different synchronization signal blocks.
Preferably, the coefficients of the common search space in which the control channel set is located are numbered according to the number of the plurality of synchronization signal blocks located in the same frequency band.
A technical solution of a second aspect of the present application is that, in the method according to any one of the embodiments of the first aspect of the present application, the method is used for a terminal device:
the terminal equipment scans a wireless radio frequency channel and receives a synchronous signal block in any beam direction;
the terminal equipment receives first broadcast information after realizing synchronization through a current synchronization signal block, and obtains a control channel set corresponding to the current synchronization signal block
The terminal equipment obtains the position of a time domain and a frequency domain of second broadcast information through the control channel set;
and the terminal equipment obtains the identification of a plurality of synchronous signal blocks, the frequency band of each synchronous signal block and the indication information of the control channel set associated with each synchronous signal block through the second broadcast information.
In a third aspect, embodiments of the present application provide a terminal device, which uses the method described in any one of the embodiments of the first aspect of the present application,
the terminal equipment scans a wireless radio frequency channel and receives a synchronous signal block in any beam direction;
after the terminal equipment realizes synchronization through a current synchronization signal block, receiving first broadcast information to obtain a control channel set corresponding to the current synchronization signal block;
the terminal equipment obtains the position of a time domain and a frequency domain of second broadcast information through the control channel set;
and the terminal equipment obtains the identification of a plurality of synchronous signal blocks, the frequency band of each synchronous signal block and the indication information of the control channel set associated with each synchronous signal block through the second broadcast information.
In a fourth aspect, an embodiment of the present application provides a network device, where with the method described in any of the first aspects of the present application, the network device is configured to send the first broadcast information and the second broadcast information.
In a fifth aspect, the present application also proposes a computer-readable medium on which a computer program is stored, which computer program, when being executed by a processor, carries out the steps of the method according to any one of the embodiments of the first aspect of the present application.
Finally, the present application proposes a communication system comprising at least 1 terminal device according to the third aspect of the present application and at least 1 network device according to the fourth aspect of the present application.
The embodiment of the application adopts at least one technical scheme which can achieve the following beneficial effects:
in satellite communication, one cell maps a plurality of beams and reduces interference in a frequency multiplexing mode, and when the BWP is used for frequency multiplexing, all SSBs are transmitted on the initial BWP, so that a terminal can conveniently obtain the mapping relation between all BWPs and the beams in a system and the information indication of CORESET0 associated with each beam. This patent considers the extended SIB1 to indicate the above information, and when indicating the CORESET0, three schemes are proposed, in which the indication information of the CORESET0 associated with all SSBs is the same, which has the advantage of signaling saving, the indication information of the CORESET0 associated with SSBs of one BWP is the same, which has the advantage of fully utilizing the features of one BWP to indicate the association between SSBs and CORESET0, and the indication information of the CORESET0 associated with each SSB is different, which is the most flexible and has the greatest signaling overhead. In addition, considering that the number of SSBs of a BWP is reduced, in order to save signaling and complexity of terminal search, the SSB coefficients associated with the CORESET are updated to the number of SSBs on each BWP.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
FIG. 1 is a flow chart of an embodiment of the method of the present application;
FIG. 2 is a schematic representation of the locations of SSBs and SIB 1;
FIG. 3 is a schematic diagram of SSB and CORESET0 multiplexing modes;
FIG. 4 is a flowchart of an embodiment of the method of the present application for a terminal device;
FIG. 5 is a schematic diagram of an embodiment of a network device;
FIG. 6 is a schematic diagram of an embodiment of a terminal device;
fig. 7 is a schematic structural diagram of a network device according to another embodiment of the present invention;
fig. 8 is a block diagram of a terminal device of another embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the embodiments of the present application, the SSB is referred to as a "synchronization signal block". The existing NR synchronization signal block set is a set of a plurality of synchronization signal blocks within a certain time period, each synchronization signal block corresponds to one beam direction within the same period, and the beam direction of each synchronization signal block within one synchronization signal block set covers the entire cell. The synchronization signal block is transmitted at a plurality of times in different beam directions.
In the NR system, after acquiring the SSB information, the terminal receives the broadcasted MIB information and the remaining system information SIB 1. Among them, SIB1 information is transmitted through a downlink PDSCH data channel, and the PDSCH channel requires a channel of a PDCCH for scheduling. The terminal obtains the PDCCH information of the scheduling SIB1 in the MIB, and further obtains the SIB1 information of the scheduling. The NR common search space is used to schedule SIB 1. NR defines a physical resource set CORESET, where CORESET0 is the physical resource set to which scheduling SIB1 corresponds.
The technical solutions provided by the embodiments of the present application are described in detail below with reference to the accompanying drawings.
Fig. 1 is a flow chart of an embodiment of the method of the present application.
The application provides a broadcast channel indication method, which comprises the following steps:
step 101, transmitting a synchronization signal block and first broadcast information on a plurality of frequency bands;
the synchronization grid on a plurality of frequency bands (any frequency band for which synchronization is initially achieved, namely an initial frequency band) contains synchronization signal blocks, and each synchronization signal block contains first broadcast information for indicating a control channel set associated with a current synchronization signal block. The control channel set and the common search space in the present application are information of a channel for scheduling the second broadcast information. For example, in the 5G NR system, the information used for scheduling the downlink control channel of SIB1, where the lower 4 bits indicate the configuration of the type 0common search space (type 0common search space) in which the control channel set0 is located, including parameter values only for pattern 1, the index of the first OFDM symbol in the search space, the number of search spaces in each slot, and the upper 4 bits indicate the configuration of the control channel set 0(CORESET 0), including the multiplexing mode types of SSB and CORESET0, the number of PRBs occupied by CORESET0, the number of OFDM symbols used for CORESET0, and the deviation of the lower edge of SSB from the lower edge of CORESET0 in the frequency domain.
102, transmitting control information for indicating second broadcast information distributed in a plurality of frequency bands;
the control channel set transmits control information for indicating a location of a time and frequency domain where second broadcast information is transmitted;
each synchronization signal block corresponds to a second broadcast message;
the second broadcast information corresponding to the synchronization signal blocks is distributed over a plurality of frequency bands, and each second broadcast information and the corresponding synchronization signal block are located in the same frequency band. The number of these is at least 2.
103, transmitting second broadcast information for determining a control channel set corresponding to one or more of the synchronization signal blocks on each frequency band;
for example, the second broadcast information includes an identifier of a synchronization signal block included in each frequency band in the system, a frequency band in which each synchronization signal block is located, and indication information of a control channel set and a common search space associated with each synchronization signal block.
As an embodiment of the method of the present application, on the same frequency band, corresponding to any one of the synchronization signal blocks, the first broadcast information and the second broadcast information are used to indicate that at least a part of information of the control channel set is the same. That is, in the first broadcast information and the second broadcast information corresponding to the synchronization signal block, the indication information of at least one of the following associated with any one synchronization signal block is the same in the same frequency band: the multiplexing mode between the synchronous signal block and the control channel set, the position relation between the synchronous signal block and the control channel set, the resource amount occupied by the control channel set and the common search space where the control channel set is located. For example, when X SSBs are included in the same frequency band, X SIBs 1 are included in the same frequency band accordingly. The first broadcast information includes first indication information for scheduling a control channel set of SIB1 corresponding to the SSB of the primary beam, the first indication information indicating a relationship between the SSB of the primary beam and the corresponding CORSET, and the second broadcast information includes second indication information for scheduling a control channel set of X SIBs 1, the second indication information indicating a relationship between the X-th (X-1 to X) SSB and the corresponding CORESET. Therefore, in the same frequency band, when the relationships between all SSB blocks and their corresponding CORESET (e.g., the deviations between the lower edge of the SSB and the lower edge of the CORESET0 in the frequency domain) are the same, the same indication information can be used for the first broadcast information and the second broadcast information, and in this case, the indication information in the first broadcast information can be directly used for the second broadcast information. As another embodiment of the method of the present application, or on the basis of the previous embodiment, at least a part of the information indicating the control channel set in the first broadcast information and the second broadcast information is the same corresponding to any one synchronization signal block in different frequency bands. That is, in the first broadcast information and the second broadcast information corresponding to the synchronization signal block, the indication information of at least one of the following associated with any one synchronization signal block is the same in different frequency bands: the multiplexing mode between the synchronous signal block and the control channel set, the position relation between the synchronous signal block and the control channel set, the resource amount occupied by the control channel set and the common search space where the control channel set is located. For example, when Y SSBs are included on the different frequency band, Y SIBs 1 are included on the different frequency band accordingly. The first broadcast information includes a control channel set of SIB1 corresponding to an SSB for scheduling an initial beam in an initial band and first indication information of a common search space, the first indication information indicating a relationship between the SSB for scheduling the initial beam and a corresponding set, and the second broadcast information includes a control channel set for scheduling Y SIBs 1 and second indication information of the common search space, and the second indication information indicates a relationship between the Y (Y is 1 to Y) SSBs and a corresponding set. Therefore, in multiple frequency bands, when the relationships between all SSB blocks and their corresponding CORESET are the same, the first broadcast information and the second broadcast information may use the same indication information, and at this time, the first broadcast information may be directly used for the second broadcast information; it should be noted here that although Y SSBs and Y SIBs 1 are distributed over multiple frequency bands, each SIB1 is located in the same frequency band as its corresponding SSB, as indicated in step 102.
As another embodiment of the method of the present application, although different indication information is used for the first broadcast information and the second broadcast information on the same frequency band when the relation between each SSB block and its corresponding CORESET is different on the same frequency band, in this case, the first broadcast information cannot be directly used for the second broadcast information.
As another embodiment of the method of the present application, when the relation between each SSB block and its corresponding CORESET is different over multiple frequency bands, different indication information is used for the first broadcast information and the second broadcast information over different frequency bands, and at this time, the first broadcast information cannot be directly used for the second broadcast information.
As another embodiment of the method of the present application, further, the first broadcast information and the second broadcast information are used to indicate that the information of the control channel set and the common search space is different corresponding to different synchronization signal blocks. That is, when the relation between each SSB block and its corresponding CORESET is different, the information indicating the control channel set in the first broadcast information and the second broadcast information of the SSB block is different corresponding to different synchronization signal blocks. At this time, the first broadcast information cannot be directly used for the second broadcast information. It should be noted that, when the relation between each SSB block and its corresponding CORESET is different in the same frequency band and different frequency bands, the first broadcast information is only used for indicating the CORESET corresponding to the initial SSB, and the second broadcast information is also used for indicating the CORESET corresponding to other SSBs, so that the first broadcast information and the second broadcast information use different indication information.
It should be noted that, when the first broadcast information is the same as at least a part of the indication information in the second broadcast information, the same indication information in the first broadcast information may be multiplexed by the second broadcast information, and thus the transmission is not repeated in the second broadcast information. That is, the same indication information only needs to be transmitted once in the sum of the first broadcast information and the second broadcast information.
Figure 2 is a schematic diagram of the locations of the SSBs and SIB 1.
For example, the frequency band is BWP, the initial frequency band is BWP1, the first broadcast information is MIB, and the second broadcast information is SIB 1.
As shown in fig. 2, the set of left honeycomb shapes represents a schematic diagram of frequency reuse of multiple beams in the same cell; the right bar set represents the distribution of multiple SSBs and corresponding SIBs 1 over the frequency band; F1-F3 represent 3 BWPs; 1-8 represent the numbers of the beam directions (or the numbers of SSBs). BWP1 has 4 SSBs and SIB1, BWP2 has 2 SSBs and SIB1, BWP3 has 2 SSBs and SIB 1. The terminal searches the SSB of the corresponding beam, after obtaining the broadcast information MIB, finds the corresponding SIB1 according to the existing standard, but the terminal can only know the BWP and the SSB where the terminal is located, so the mapping relationship between the BWP and the SSB of the entire system and the frequency domain position of the BWP need to be broadcast to the terminal, and therefore the second broadcast information is new SIB1 information, which needs to indicate the mapping relationship between the BWP and the SSB of the entire system, the frequency domain position of the BWP, and the information indication of the CORESET associated with all SSBs, in addition to the information such as the initial BWP required by the existing terminal. The SIB1 indicates the mapping relationship between BWP and the beam, that is, BWP1 corresponds to 4 beams No.1/4/5/8, BWP2 corresponds to 2 beams No.2/6, and BWP3 corresponds to 2 beams No. 3/7.
When the indication information is sent to the terminal device, for example, the indication information of the control channel set associated with any one synchronization signal block in the multiple frequency bands is the same, the indication information for indicating the control channel set in the first broadcast information is the same as the indication information for indicating the control channel set in the second broadcast information, and the indication information of the control channel set in the first broadcast information is directly used in the second broadcast information. In this embodiment, the relations between all SSB blocks and their corresponding CORESET are the same, that is, the information of the CORESET indicated in the first broadcast information MIB may be directly used for the second broadcast information, and at this time, the second broadcast information does not add the signaling indication about the association relation between the SSB and the CORESET.
For another example, the indication information of the control channel set associated with the synchronization signal block on each frequency band indicated by the second broadcast information is different, and the indication information about the control channel set in the first broadcast new information may not be directly used for the second broadcast information;
or, in the same frequency band, the indication information for indicating the control channel set in the first broadcast information and the second broadcast information is the same. In this embodiment, the relationships between all SSB blocks and CORESET on the same BWP are the same, that is, the SIB1 indication information of the four SSBs mapped by BWP1 is the same, the SIB1 indication information of the 2 SSBs mapped by BWP2 is the same, and the SIB1 indication information of the 2 SSBs mapped by BWP3 is the same.
For another example, the indication information of the control channel set associated with the synchronization signal block on each frequency band indicated by the second broadcast information is different, and the indication information of the first broadcast control channel set may not be directly used for the second broadcast information; or, the first broadcast information and the second broadcast information are used for indicating that at least a part of indication information of the CORESET is the same corresponding to each synchronization signal block, and at least a part of indication information of the control channel set in the first broadcast information can be directly used for the second broadcast information
In this embodiment, if the relationships between all SSB blocks and CORESET are different, that is, the SIB1 information corresponding to 8 SSBs in the entire system is different.
Preferably, in the first broadcast information and the second broadcast information, the coefficients of the common search space in which the control channel set is located are numbered according to the number of the plurality of synchronization signal blocks located in the same frequency band.
For example, the indications of the type 0common search spaces of the existing standard all have a corresponding relationship with the SSB coefficient i, for example, in a first mode, the type 0common search space of an SSB is in a detection window comprising 2 consecutive time slots, the period of the detection window is 20ms, and the mapping relationship between the index i of the SSB and one time slot of the corresponding detection window is [ see TS 38.213v f.a.0 ]:
wherein n is0Is an index of a first slot of a type 0common search space detection window, O is used to control a start position of a detection window of a first SSB for avoiding collision of the type 0common search space detection window with the SSB, μ represents an indication of a subcarrier spacing, M controls an overlapping degree of detection windows of SSB _ i and SSB _ i +1, N is a number of slots of a subframe, where O and M are indicated by lower 4 bits of a broadcast signaling MIB.
Considering that the number of SSBs on each BWP now varies, the SSB coefficients indicating the type 0common search space are numbered on one BWP.
To save signaling and terminal search complexity, the SSB coefficients associated with the CORESET are updated to the number of SSBs on each BWP.
FIG. 3 is a schematic diagram of SSB and CORESET0 multiplexing modes.
For example, a PDCCH-configSIB1 field in the MIB indicates that the terminal acquires information for scheduling a PDCCH of the RMSI, where the lower 4 bits indicate a configuration of type 0common search space, including a parameter value only for mode one, an index of a first OFDM symbol of a search space, and a number of search spaces within each slot, and the upper 4 bits indicate a configuration of CORESET0, including a multiplexing mode type of SSB and CORESET0, a number of PRBs occupied by CORESET0, a number of OFDM symbols used for CORESET0, and a deviation of a lower edge of SSB from a lower edge of CORESET0 in a frequency domain. Like the SSB, the SIB1 also needs to cover the entire cell, so there is one CORESET0 per sync block and the same beam direction is used. The multiplexing mode types of the SSB and the CORESET0 have the following three modes: mode one, mode two and mode three. The first mode is SSB and CORESET time division multiplexing; the second mode is frequency division multiplexing, and the starting time of the control channel set is earlier than the synchronous signal block; and the mode three is frequency division multiplexing, and the starting time of the control channel set is not earlier than the synchronous signal block.
Preferably, the multiplexing mode of the synchronization signal block and the associated control channel set is mode two or mode three; preferably, the synchronization signal blocks corresponding to the first broadcast information and the second broadcast information are multiplexed with the associated control channel set in the same frequency band in the same manner.
Fig. 4 is a flowchart of an embodiment of the method of the present application for a terminal device.
The method in any embodiment of the first aspect of the present application is used for a terminal device to:
step 204, the terminal device obtains the identifiers of the multiple synchronization signal blocks, the frequency band of each synchronization signal block, and the indication information of the control channel set associated with each synchronization signal block through the second broadcast information.
Fig. 5 is a schematic diagram of an embodiment of a network device.
The present application further proposes a network device configured to: and transmitting the first broadcast information and the second broadcast information.
In order to implement the foregoing technical solution, the network device 400 provided in the present application includes at least one of a network sending module 401, a network determining module 402, and a network receiving module 403.
The network sending module is configured to send the first broadcast information and the second broadcast information in the foregoing embodiment; the network transmission module transmits a synchronization signal block in a plurality of frequency bands (any one of the frequency bands can be used as an initial BWP), where each synchronization signal block includes the first broadcast information. The network transmission module transmits second broadcast information in a plurality of frequency bands (e.g., including an initial BWP and other BWPs), wherein each second broadcast information corresponds to a first broadcast information. And the second broadcast information corresponding to the synchronization signal block and the second broadcast information are positioned on the same frequency band. The network sending module is further configured to send a signal of a downlink control channel, where a position of the downlink control channel is indicated by the first broadcast information, and the downlink control channel is used to schedule the second broadcast information.
The network determination module is configured to determine an accessed frequency band (e.g., BWP) and a beam.
The network receiving module is used for receiving a random access request.
The specific method for implementing the functions of the network sending module, the network determining module, and the network receiving module is described in the embodiments of the methods of the present application, and is not described herein again.
The network device described in the present application includes, but is not limited to, a mobile communication base station device or a satellite-borne device for satellite communication.
Fig. 6 is a schematic diagram of an embodiment of a terminal device.
The application provides a terminal device, the terminal device is used for:
scanning a wireless radio frequency channel, and receiving a synchronous signal block in any beam direction;
after synchronization is realized through a current synchronization signal block, receiving first broadcast information, and acquiring a control channel set corresponding to the current synchronization signal block;
obtaining a location of a time and frequency domain of second broadcast information through the set of control channels;
and acquiring the identifications of a plurality of synchronous signal blocks, the frequency band of each synchronous signal block, and the indication information of the control channel set and the common search space associated with each synchronous signal block through the second broadcast information.
In order to implement the foregoing technical solution, the terminal device 500 provided in the present application includes at least one of a terminal sending module 501, a terminal determining module 502, and a terminal receiving module 503.
The terminal receiving module is configured to receive any one synchronization signal block and first broadcast information, and obtain indication information of a control channel set and a search space set corresponding to the any one synchronization signal block (i.e., a current signal block for implementing synchronization); the system is also used for receiving a downlink control channel; and the receiver is further configured to receive second broadcast information, where the second broadcast information includes an identifier of the plurality of synchronization signal blocks, a frequency band, and indication information of a control channel set and a common search space associated with each synchronization signal block.
The terminal determining module is used for determining a control channel set and a common search space corresponding to first broadcast information according to indication information in the first broadcast information; the terminal determining module is further configured to determine a position of the second broadcast information according to the downlink control channel; the terminal determining module is further configured to determine, according to the indication information of the second broadcast information terminal, a control channel set and indication information of a common search space associated with each synchronization signal block in the initial frequency band.
The terminal sending module is configured to send a random access response in a beam corresponding to any one of the synchronization signal blocks (i.e., a current signal block for achieving synchronization) in the initial frequency band; further, an uplink control channel (PUCCH) or uplink data (PUSCH) is transmitted.
The specific method for implementing the functions of the terminal sending module, the terminal determining module and the terminal receiving module is as described in the method embodiments of the present application, and is not described herein again.
The terminal equipment can be mobile communication personal terminal equipment and satellite communication ground equipment, and in the satellite communication ground equipment, the terminal equipment can be mobile terminal equipment or fixed equipment.
Fig. 7 is a schematic structural diagram of a network device according to another embodiment of the present invention. As shown, the network device 600 includes a processor 601, a wireless interface 602, and a memory 603. Wherein the wireless interface may be a plurality of components, i.e. including a transmitter and a receiver, providing means for communicating with various other apparatus over a transmission medium. The wireless interface implements a communication function with the terminal device, and processes wireless signals through the receiving and transmitting devices, and data carried by the signals are communicated with the memory or the processor through the internal bus structure. The memory 603 contains a computer program that executes any of the embodiments of the present application, running or changed on the processor 601. When the memory, processor, wireless interface circuit are connected through a bus system. The bus system includes a data bus, a power bus, a control bus, and a status signal bus, which are not described herein.
Fig. 8 is a block diagram of a terminal device of another embodiment of the present invention. The terminal device 700 comprises at least one processor 701, a memory 702, a user interface 703 and at least one network interface 704. The various components in the terminal device 700 are coupled together by a bus system. A bus system is used to enable connection communication between these components. The bus system includes a data bus, a power bus, a control bus, and a status signal bus.
The user interface 703 may include a display, a keyboard, or a pointing device, such as a mouse, a trackball, a touch pad, or a touch screen, among others.
The memory 702 stores executable modules or data structures. The memory may have stored therein an operating system and an application program. The operating system includes various system programs, such as a framework layer, a core library layer, a driver layer, and the like, and is used for implementing various basic services and processing hardware-based tasks. The application programs include various application programs such as a media player, a browser, and the like for implementing various application services.
In the embodiment of the present invention, the memory 702 contains a computer program for executing any of the embodiments of the present application, and the computer program runs or changes on the processor 701.
The memory 702 contains a computer readable storage medium, and the processor 701 reads the information in the memory 702 and combines the hardware to complete the steps of the above-described method. In particular, the computer-readable storage medium has stored thereon a computer program which, when being executed by the processor 701, carries out the steps of the method embodiments as described above with reference to any of the embodiments.
The processor 701 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the method of the present application may be implemented by hardware integrated logic circuits in the processor 701 or by instructions in the form of software. The processor 701 may be a general purpose processor, a digital signal processor, an application specific integrated circuit, an off-the-shelf programmable gate array or other programmable logic device, discrete gate or transistor logic, discrete hardware components. The various methods, steps and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. In a typical configuration, the device of the present application includes one or more processors (CPUs), an input/output user interface, a network interface, and a memory.
Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application therefore also proposes a computer-readable medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of the embodiments of the present application. For example, the memory 603, 702 of the present invention may include volatile memory in a computer readable medium, Random Access Memory (RAM) and/or nonvolatile memory such as Read Only Memory (ROM) or flash memory (flash RAM).
Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.
Based on the embodiments of fig. 5 to 8, the present application further provides a communication system, which includes at least 1 embodiment of any terminal device in the present application and/or at least 1 embodiment of any network device in the present application. The communication system described in the present application may be a terrestrial mobile communication system or a satellite communication system, and is not limited specifically herein.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (10)
1. A broadcast channel indication method, characterized in that,
the method comprises the steps of including synchronization signal blocks on a synchronization grid on a plurality of frequency bands, wherein each synchronization signal block includes first broadcast information used for indicating a control channel set associated with a current synchronization signal block;
the control channel set is used for indicating the position of a time domain and a frequency domain for transmitting second broadcast information;
the second broadcast information includes an identifier of the synchronization signal block on each frequency band, a frequency band in which each synchronization signal block is located, and indication information of a control channel set associated with each synchronization signal block.
2. The method of claim 1,
in the first broadcast information and the second broadcast information corresponding to the synchronization signal block, at least one piece of indication information related to any synchronization signal block is the same, and the indication is not repeated:
a multiplexing mode between the synchronization signal block and the control channel set;
a positional relationship between the synchronization signal block and the control channel set;
controlling the amount of resources occupied by the channel set;
a common search space in which the set of control channels is located.
3. The method of claim 1,
in the same frequency band, the indication information associated with any one of the first broadcast information and the second broadcast information corresponding to the synchronization signal block is the same as at least one of the following indication information, and the indication is not repeated:
a multiplexing mode between the synchronization signal block and the control channel set;
a positional relationship between the synchronization signal block and the control channel set;
controlling the amount of resources occupied by the channel set;
a common search space in which the set of control channels is located.
4. The method of claim 1,
the first broadcast information and the second broadcast information are used for indicating that the control channel set information is different corresponding to different synchronous signal blocks.
5. The method of claim 1,
and the coefficients of the common search space in which the control channel set is positioned are numbered according to the number of a plurality of synchronous signal blocks positioned in the same frequency band.
6. The method according to any of claims 1 to 5, for a terminal device,
the terminal equipment scans a wireless radio frequency channel and receives a synchronous signal block in any beam direction;
after the terminal equipment realizes synchronization through a current synchronization signal block, receiving first broadcast information to obtain a control channel set corresponding to the current synchronization signal block;
the terminal equipment obtains the position of a time domain and a frequency domain of second broadcast information through the control channel set;
and the terminal equipment obtains the identification of a plurality of synchronous signal blocks, the frequency band of each synchronous signal block and the indication information of the control channel set associated with each synchronous signal block through the second broadcast information.
7. A terminal device using the method of any one of claims 1 to 5,
the terminal equipment scans a wireless radio frequency channel and receives a synchronous signal block in any beam direction;
after the terminal equipment realizes synchronization through a current synchronization signal block, receiving first broadcast information to obtain a control channel set corresponding to the current synchronization signal block;
the terminal equipment obtains the position of a time domain and a frequency domain of second broadcast information through the control channel set;
and the terminal equipment obtains the identification of a plurality of synchronous signal blocks, the frequency band of each synchronous signal block and the indication information of the control channel set associated with each synchronous signal block through the second broadcast information.
8. A network device using the method of any one of claims 1 to 5,
the network device is configured to send the first broadcast information and the second broadcast information.
9. A computer-readable medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 5.
10. A communication system comprising at least 1 terminal device according to claim 7 and at least 1 network device according to claim 8.
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