CN114285521B - Information format type determining method and equipment - Google Patents
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Abstract
The application discloses a method for determining information format types, which comprises the following steps: transmitting identification information and target information, and determining the format type of the target information according to the corresponding relation between the identification information and the format type of the target information, wherein the target information comprises at least one item of MIB information and DCI information, and the length or the content of at least one field in the target information is different, so that the format of the target information is divided into different format types. The application also comprises a device for implementing the method. The application solves the problem that the MIB information and the rollback DCI information format of the fixed field are not suitable for various service requirements.
Description
Technical Field
The present application relates to the field of wireless communications technologies, and in particular, to a method and an apparatus for determining an information format type.
Background
In the NR system, SSB is detected first in the process of searching the terminal device cell. SSBs include PSS, SSS, and PBCH. MIB (Master Information Block ) information blocks carried in PBCH are used to indicate the most basic configuration information of the cell. 3GPP TS 38.331 Vg60 define the format and content of MIB information. The reference 3GPP TS 38.331 Vg70,MIB information also includes 8bit additional information, which carries information such as the system frame number, field identification, SSB index identification, etc.
The PDCCH (Physical Downlink Control Channel physical downlink control channel) carries DCI (Downlink Control Information ). The DCI includes PDSCH and PUSCH transmission resource scheduling information, uplink power control indication, slot format indication, and the like. The PDCCH dynamically transmits DCI to a terminal device, which needs to read the control information, determine when (time domain) and where (frequency domain) and how to demodulate/decode PDSCH/PUSCH, adjust transmission power, etc.
The DCI transmission resources are CORESET (Control Resource SET ), and the terminal device acquires control information by monitoring CORESET at a designated monitoring occasion, and this process is implemented by blind detection of PDCCH candidate sets in the configured search space.
Since different downlink control information sizes are generally different, different formats are defined for each DCI. To limit the complexity of the terminal device to detect the PDCCH candidate set, NR limits the format of DCI information detected in each time unit. The formats of DCI information of the scheduled PDSCH include format 1_0 of fallback DCI information and formats 1_1, 1_2 of non-fallback DCI information. Format 1_0 of the fallback DCI information supports common message scheduling (e.g., paging, system message scheduling) and terminal device specific PDSCH scheduling. Common message scheduling such as SIB1, OSI, msg2, msg4, etc. The specific traffic type of the format scheduling of the fallback DCI information is differentiated according to the CRC-scrambled RNTI (RNTI Radio Network Tempory Identity, radio network temporary identity). The CRC information scrambles different RNTIs for identifying downlink control information of different functions. The format of the fallback DCI information supports the most basic scheduling, which is typically data scheduling in a ambiguity phase where the terminal device does not receive any RRC configuration or RRC reconfiguration. When the TS 3GPP 38.211 Vg70,CRC is scrambled by the SI-RNTI, the PDCCH in the format 1_0 of the back DCI information is used for carrying scheduling information of system information; when the CRC is scrambled by RA-RNTI/MsgB-RNTI, the PDCCH in the format 1_0 of the back DCI information is used for carrying scheduling information of random access response information of the terminal equipment; when the CRC is scrambled by TC-RNTI, the PDCCH in the format 1_0 of the back DCI information is used for carrying the scheduling information of Msg 4; when the CRC is scrambled by the C-RNTI/CS-RNTI/MCS-RNTI, the PDCCH in the format 1_0 of the back-off DCI information is used for carrying the PDSCH scheduling information specific to the terminal equipment. The partial information fields in the format of the non-fallback DCI information can be configured through high-layer signaling to support different scheduling scenes, service requirements and the like.
From the above background art: the MIB information includes a system frame number, a subcarrier common interval, SSB subcarrier offset, PDCCH-related configuration information of demodulation RMSI, and the like. The MIB information format includes a reserved field of 1 bit "spark". In addition, the format and fields of MIB information are fixed. In the format of the fallback DCI information, each field length and content are fixed and non-configurable. In the format of the non-fallback DCI information, although the length and content of a part of the field may be configured, the relevant configuration information may be required to be sent to the terminal device after the terminal device completes random access.
The problems of the prior art are: the evolution of wireless communication networks may support more types of application scenarios, support more extensive frequency ranges, support more diverse subcarrier spacing configurations. For example, the system may support a greater number of SSBs, facilitating finer granularity beam scanning. For another example, if a subcarrier spacing configuration with a larger subcarrier width is supported, its corresponding 1 slot length is shorter than that of the prior art. If format 1_0 of DCI information still uses the same resource allocation field, the efficiency of resource scheduling and the performance served may be limited. For PDSCH scheduling in the ultra-high frequency range, the frequency domain resource allocation may be of a few kinds, the frequency domain allocation result may be identified by the frequency resource allocation field using 1 bit of information, and the time domain allocation may be of a more kind, and the length of the time domain resource allocation field needs to be extended. The evolution of wireless communication networks may also support a wider range of business applications, such as supporting ground-air communications and satellite communications, subject to excessive propagation delays in the air. If the maximum number of HARQ processes is still maintained as 16 in the ground-air communication and satellite communication system, the HARQ process number in format 1_0 corresponding to the DCI information is maintained as 4 bits, which will affect the peak throughput performance of the terminal device. Therefore, the formats of MIB information and fallback DCI information of the fixed fields restrict the evolution and service application scenarios of the wireless communication network.
Disclosure of Invention
The application provides a method and equipment for determining information format types, which solve the problem that MIB information of fixed fields and a rollback DCI format are not suitable for various service requirements.
In a first aspect, the present application provides a method for determining an information format type, including the following steps:
Transmitting identification information and target information;
determining the format type of the target information according to the corresponding relation between the identification information and the format type of the target information, wherein the target information comprises at least one item of MIB information and DCI information,
The length or the content of at least one field in the target information is different, so that the target information format is divided into different format types.
Preferably, the identification information is a cell operation frequency band, and the format type of the MIB information and/or the DCI information format type are determined according to the cell operation frequency band.
Preferably, the identification information is first information in MIB information; the target information is DCI information, and the format type of the target information is determined according to the first information in the MIB information.
Preferably, the identification information is second information in the extension MIB information; and the target information is DCI information, and the format type of the target information is determined according to the second information in the extended MIB information. It is further preferred that indication information is transmitted in MIB information for determining whether the extended MIB information exists. Further, the extended MIB is carried in an extended PBCH, and a relative position of a resource of the extended PBCH and a resource occupied by the SSB is preset.
Preferably, the identification information is third information in SIB 1; the target information is DCI information, and the format type of the target information is determined according to third information in the SIB1 information.
Preferably, the identification information is fourth information in OSI; the target information is DCI information, and the format type of the target information is determined according to fourth information in the OSI information.
Preferably, when the identification information is the third information or the fourth information, the target information is the fallback DCI information, and the target information scrambles the CRC bits with any one of the C-RNTI, TC-RNTI, CS-RNTI, MCS-RNTI, and P-RNTI.
The method according to any one embodiment of the first aspect of the present application, for a terminal device, includes the following steps:
Receiving the identification information;
And receiving the target information according to the format type indicated by the identification information.
Preferably, the terminal device acquires the indication information from MIB information to determine whether the extended MIB information exists
The method according to any one embodiment of the first aspect of the present application, for a network device, includes the following steps:
The network equipment sends the identification information;
And sending the target information according to the format type indicated by the identification information.
Preferably, the network device transmits indication information in MIB information for indicating whether the extended MIB information exists.
In a second aspect, the present application further proposes a network device, configured to implement the method according to any one of the first aspect of the present application, where at least one module in the network device is configured to at least one of the following functions: at least one module in the network device is configured to implement at least one of the following functions: transmitting the identification information; and sending the target information according to the format type indicated by the identification information. Preferably, at least one module in the network device is configured to send indication information in MIB information, which indicates whether the extended MIB information exists.
In a third aspect, the present application further proposes a terminal device, configured to implement the method according to any one of the first aspect of the present application, where at least one module in the terminal device is configured to at least one of the following functions: receiving the identification information; and receiving the target information according to the format type indicated by the identification information. Preferably, at least one module in the terminal device is configured to obtain indication information from MIB information, and determine whether the extended MIB information exists.
In a fourth aspect, the present application also proposes a communication device comprising: a memory, a processor and a computer program stored on the memory and executable on the processor, which when executed by the processor performs the steps of the method according to any one of the embodiments of the first aspect of the application.
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 application.
In a sixth aspect, the present application further proposes a mobile communication system, which includes at least one network device according to an embodiment of any one of the second aspects of the present application and/or at least one terminal device according to an embodiment of any one of the third aspects of the present application.
The above at least one technical scheme adopted by the embodiment of the application can achieve the following beneficial effects:
The method solves the problem that the fixed field of the target information format in the prior art restricts the evolution of the wireless communication network and the evolution of the service application scene, improves the effectiveness and the high efficiency of the downlink control information, and improves the system efficiency.
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 specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on 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 diagram of the structure of an SSB;
Fig. 3 is a diagram illustrating a location of a transmission resource E-PBCH of an extension MIB;
FIG. 4 is a flow chart of an embodiment of the method of the present application for a terminal device;
FIG. 5 is a flow chart of an embodiment of the method of the present application for a network device;
FIG. 6 is a schematic diagram of an embodiment of a network device;
FIG. 7 is a schematic diagram of an embodiment of a terminal device;
fig. 8 is a schematic structural diagram of a network device according to another embodiment of the present invention;
fig. 9 is a block diagram of a terminal device according to 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 clearly and completely described below with reference to specific embodiments of the present application and corresponding drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The present invention predefines a variety of format types of broadcast information and/or format types of DCI information. The field configurations of the format types of different broadcast information and/or DCI information are different. The field configuration difference refers to a length of at least one field or a meaning of at least one field is different.
The terminal device acquires the identification information, and determines the format type of the broadcast information and/or the format type of the DCI information (the broadcast information and/or the DCI information are referred to as target information) based on the identification information. The identification information is information acquired by the terminal device before detecting the target information. Such as the cell operating band, an identification in a cell broadcast channel, an identification in a cell extension broadcast channel, or an identification of the remaining minimum system information (RMSI, REMAINING MASTER SYSTEM information) and other system information (OSI, other system information).
The format of the broadcast information and the format of the DCI information can be adapted to different wireless communication applications by the correspondence of different identification information and the format type of the target information, so that effective and efficient scheduling and system efficiency are ensured.
The following describes in detail the technical solutions provided by the embodiments of the present application 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 an information format type determining method, which comprises the following steps:
Step 101, setting a corresponding relation between the format type of the identification information and the target information, wherein the target information comprises at least one item of MIB information and DCI information.
The target information is divided into different types, so that the target information is suitable for different wireless communication applications, and effective and efficient scheduling and system efficiency can be ensured. The identification information is information acquired by the terminal device before detecting the target information, and is used for corresponding to the detection target information. The identification information is different depending on whether the target information is broadcast information, DCI information, or both broadcast information and DCI information, as in at least one of the optional steps 101A-E.
For example, step 101A sets a correspondence between the cell operation band and the format type (and/or DCI information) of MIB information.
The operating frequency band of the network is divided in absolute frequency. The method comprises the following steps: in the range of 0-100 GHz, the global frequency grid divides the frequency band of 100GHz into 3279165 grids, numbered from 0 up to 3279165. Each number represents an absolute frequency domain position and is referred to as NR ARFCN. The frequency band of 0-100 GHz can be divided into several operating bands with ARFCN, in addition to which the network divides the frequency range into a synchronization grid with the center of the SSB aligned. The frequency domain location of each synchronization grid has its unique number GSCN (global synchronization channel number), and each GSCN number corresponds to a frequency domain location as shown in the table below:
Whereby the table may correspond to GSCN within each operating band. The correspondence of the operating frequency bands to GSCN is exemplified as shown in the following table. On the other hand, each operating band is allocated to a different operator or operated in a shared manner.
For example, format type 1 of MIB information corresponds to set I of operation bands, and format type 2 of MIB information corresponds to set II of operation bands; if the system supports Q 1 different beam scanning SSB, the first field in the format of MIB information includes W 1 bits for identifying the Q 1 SSB indices; if the system supports Q 2 different beam scanning SSBs, the first field in the format of MIB information includes W 2 bits to identify the Q 2 SSB indices, W 1≠W2.
For example, the format types of the fallback DCI information are differentiated according to the difference in length of at least one field or the difference in information carried by at least one field. The format length of the corresponding back-off DCI information can be determined according to the determined format type of the back-off DCI information, and the meaning of each field of the format of the back-off DCI information when the CRC is scrambled by various RNTI. For example, for an ultra-high frequency operation band, the format of the back-off DCI information is preset to be type 1, and when the CRC is scrambled with SI-RNTI/C-RNTI/TC-RNTI/CS-RNTI/MCS-RNTI/P-RNTI, the time domain resource allocation field is N 1 bits and the frequency domain resource allocation field is N 2 bits. The format of the back DCI information of the operation frequency band with middle and low frequency is preset as type 2, when CRC is scrambled by SI-RNTI/C-RNTI/TC-RNTI/CS-RNTI/MCS-RNTI/P-RNTI, the time domain resource allocation field length is N 3 bits, and the frequency domain resource allocation field length is N 4 bits. Wherein N 1+N2＝N3+N4,N1>N3. Therefore, for PDSCH scheduling in the ultra-high frequency range, the shorter frequency domain allocation field length and the longer time domain allocation field length can be used, the effectiveness and the high efficiency of scheduling are ensured, and more application requirements of network evolution are met. For another example, for an operation band that may be applied to non-terrestrial communication, the format of its fallback DCI information is preset to be type 3, and its HARQ process number indication field includes L 1 bits when CRC is scrambled with SI-RNTI/C-RNTI/TC-RNTI/CS-RNTI/MCS-RNTI/P-RNTI. For an operation band which is impossible to apply to non-terrestrial communication, the format of the back-off DCI information is preset to be type 4, and when CRC is scrambled with SI-RNTI/C-RNTI/TC-RNTI/CS-RNTI/MCS-RNTI/P-RNTI, the HARQ process number indication field thereof comprises L 2 bits, wherein L 1>L2. In this way, a larger number of HARQ processes can be used in non-ground communication applications such as ground-air communication and satellite communication, and the maximum number of HARQ processes is kept to be 16 in ground communication applications, so that different application requirements of network evolution are met, and the effectiveness and high efficiency of scheduling are ensured.
If the target information includes two or more of broadcast information, fallback DCI information, and non-fallback DCI information, a correspondence between an operation band and respective format types of various information included in the target information may be preset. For example, the target information includes broadcast information and rollback DCI information, and the set I of the preset operation frequency band corresponds to format type 1 of MIB information and format type 1 of rollback DCI information; the set II of operation bands corresponds to format type 2 of MIB information, format type 2 of fallback DCI information, and so on.
For another example, step 101B sets a correspondence relationship between the first information in the MIB information and the format type of the DCI information.
The format of MIB information is fixed, including a reserved field of 1 bit "spark". The 1-bit "spark" field may be used to indicate first information corresponding to a format type of DCI information of a current wireless communication application.
The format type of the fallback DCI information is distinguished according to the difference in the length of at least one field or the difference in the information carried by at least one field. Similarly, the target information may also be non-fallback DCI information. The terminal equipment and the network equipment agree on the format type of the non-rollback DCI information in the spare field in the MIB information through a communication protocol. Accordingly, the terminal device can determine the format type of the target information after detecting the MIB information.
For another example, in step 101C, a correspondence relationship between the format type of the DCI information and the second information in the extension MIB information is set.
Although a reserved field of 1 bit "spark" in MIB information may refer to the format type of target information, 1 bit can indicate only two types. To adapt to different wireless communication applications, it may be necessary to support more format types of target information. Thus, indication information is transmitted in the MIB information for determining whether the extension MIB information exists, for example, the presence or absence of extension MIB information may be indicated in a reserved field of 1-bit "spark" of MIB information. And if the extension MIB information exists, carrying second information in the extension MIB information for indicating the format type of the target information.
A schematic structure of SSB is shown in fig. 2. The extended MIB is carried in an extended PBCH, and the relative position of the resources of the extended PBCH and the resources occupied by SSB is preset. SSB occupies 0 to 3 in the time domain, and 4 symbols in total occupy 20 RBs (240 subcarriers) in the frequency domain.
The PSS is located in the middle 127 subcarriers of symbol 0. SSS is located in the middle 127 subcarriers of symbol 2; to protect PSS and SSS, they have different sub-carriers Set 0 at both ends. The PBCH is located in symbols 1 and 3, and symbol 2, where symbols 1 and 3 occupy all subcarriers from 0 to 239, and symbol 2 occupies all subcarriers except the subcarrier occupied by SSS and the subcarrier Set 0 protecting SSS. In this embodiment, the relative positions of the E-PBCH and SSB channels occupied by the extension MIB information are preset. Taking fig. 3 as an example, the relative positions of the E-PBCH and the SSB in time and frequency are preset, and are a plurality of PRBs with the same symbol number in the time domain, where the frequency domain is adjacent to the lowest subcarrier of the SSB.
For another example, in step 101D, a correspondence relationship between the format types of the DCI information and the third information in SIB1 is set.
The SIB1 message may carry a format type of the fallback DCI information through the third information, and other format types of the fallback DCI information scrambled with the SI-RNTI in CORESET except CORESET a for adapting to different wireless communication applications.
In the rollback DCI information, the CRC is scrambled with any one of C-RNTI/TC-RNTI/CS-RNTI/MCS-RNTI/P-RNTI.
The format types of different fallback DCI information are distinguished according to the difference in length of at least one field or the difference in information carried by at least one field. Preferably, if the format type of the fallback DCI information is determined by SIB1, the total length of fields of the format types of different fallback DCI information is the same, and at least one field carries different information. Thus, the PDCCH of the format of the back DCI information of the CRC can be scrambled by using different RNTI, the blind detection of the same length can be used, and the blind detection complexity of the terminal equipment is prevented from being increased by the PDCCH detection corresponding to the format of the back DCI information. For example, the length of the format type of the various fallback DCI information is L. The MIB information includes CORESET resource locations corresponding to Type0PDCCH for carrying SIB1 information, and a candidate set for detecting Type0-PDCCH in CORESET. The format of the back-off DCI information of the CRC is scrambled with the SI-RNTI in CORESET0 with a preset format type of the back-off DCI information. The format type of the back-off DCI information of the CRC is scrambled with other RNTI is obtained in the SIB1 information.
In the prior art, the content of SIB1 information may be referred to 3GPP TS 38.331 V.g60. The format type of the back DCI information carried in the SIB1 information can be directly indicated by the first information in the SIB information or can be implicitly indicated by the first information. For example, the SIB1 information includes PLMN information for distinguishing mobile communication operators of different countries or regions. A service area may consist of one or several public land mobile networks. The identity of the PLMN area is a mobile network identity (MNC Mobile Network Code). Different operators, or the same operator may have different types of traffic services in different areas. The format type of the fallback DCI information corresponding to the served traffic type may be implicitly indicated according to the PLMN information.
For another example, step 101E sets a correspondence between the fourth information in OSI and the DCI information format type.
The format type of the fallback DCI information is determined by the fourth information in OSI. Step 101D is similar in that the total length of the different types of fields of the format of the fallback DCI information is the same and the information carried by at least one field is different. Thus, the PDCCH of the format of the back DCI information scrambled by different RNTI can be ensured to use blind detection of the same length, and the PDCCH detection of the back DCI format is prevented from increasing the blind detection complexity of the terminal equipment.
In the rollback DCI information, the CRC is scrambled with any one of C-RNTI/TC-RNTI/CS-RNTI/MCS-RNTI/P-RNTI.
Step 102, transmitting identification information, wherein the identification information is used for determining the format type of the target information.
Before receiving the broadcast information and the back-off DCI information, the terminal equipment determines an operation frequency band by detecting PSS and SSS; the identification information is a cell operation frequency band, and the format type is determined by using the corresponding relation between at least two types of preset cell operation frequency band and target information.
After receiving the broadcast information (including MIB information and extension MIB), the terminal device receives the fallback DCI information or non-fallback DCI information; the identification information is first information in MIB information, and the first information is carried in a reserved field in the MIB information.
Or the identification information is second information in an extension MIB, and a reserved field in MIB information carries the existence indication of the extension MIB information. When the identification information is second information in the extension MIB, a reserved field in the MIB information carries the existence indication of the extension MIB information.
The identification information is third information in SIB1 or fourth information in OSI, and the information carried by at least one field in the types of the at least two kinds of target information is different.
Because the DCI information indicates the resources carrying the PDSCH and the SIB1 information is included in the PDSCH, SIB1 further indicates CORESET of the PDCCH scheduling OSI, before receiving the SIB1 information and OSI information, the terminal device should use a default format type of the fallback DCI information, and after acquiring the SIB1 or OSI information, can determine the format type of the non-fallback DCI information through the identification information in SIB1 or OSI. In particular, the present invention is to apply multiple format types of the fallback DCI information, where the target information is the fallback DCI information, the third information or the fourth information implicitly indicates the format type configuration information of the fallback DCI information. At this time, preferably, the identification information is third information in SIB1 or fourth information in OSI, and the SIB1 and the OSI scheduling information use a preset type bearer of the fallback DCI format. And after the format type of the rollback DCI information of the CRC is scrambled by any one of SI-RNTI, C-RNTI, TC-RNTI, CS-RNTI, MCS-RNTI and P-RNTI carried in SIB1 or OSI information, the format type is used for receiving the target information.
And step 103, transmitting target information, wherein the length or the content of at least one field in the target information is different, so that the target information format is divided into different format types.
Step 104, determining the format type of the target information according to the corresponding relation between the identification information and the format type of the target information.
Preferably, the identification information is a cell operation frequency band, and the MIB information format type and/or the broadcast information format type are determined according to the cell operation frequency band.
Preferably, the identification information is first information in MIB information; the target information is DCI information, and the format type of the target information is determined according to the first information in the MIB information.
Preferably, the identification information is second information in the extension MIB information; and the target information is DCI information, and the format type of the target information is determined according to the second information in the extended MIB information.
Preferably, the identification information is third information in SIB 1; the target information is DCI information, and the format type of the target information is determined according to third information in the SIB1 information.
Preferably, the identification information is fourth information in OSI; the target information is DCI information, and the format type of the target information is determined according to fourth information in the OSI information.
The above steps 101 to 103 have a sequential relationship. With respect to step 104, when the present method is used to implement a network device, step 104 should precede step 102 or 103 for each particular format type target information to be transmitted. When the method is used for implementing the terminal device, step 104 should follow step 103 for each specific format type of target information to be transmitted, and receive said target information.
Fig. 4 is a flow chart of an embodiment of the method of the present application for a terminal device.
The method according to any one embodiment of the first aspect of the present application, for a terminal device, includes the following steps:
step 201, setting a corresponding relation between identification information and a target information format type, wherein the target information comprises at least one item of MIB information and DCI information, and the terminal device and the network device follow the same protocol, specifically, step 101.
Step 202, receiving the identification information.
Step 203, determining the format type of the target information according to the corresponding relation between the identification information and the format type of the target information.
The process of obtaining information by the terminal device in the cell search process is as follows: and after the terminal equipment is started, the downlink synchronization and the system information acquisition are completed. Specifically, the terminal device detects SSB (Synchronization Signal Block ) and system information. SSB is composed of PSS (Primary Synchronization Signals, primary synchronization signal), SSS (Secondary Synchronization Signals, secondary synchronization signal), and PBCH (Physical Broadcast Channel ). In SSB, the terminal device first detects PSS and SSS, and then acquires MIB information in PBCH of SSB. In addition to MIB, system information includes RMSI and OSI. RMSI are transmitted via system information block 1 (SIB 1), OSI are transmitted via other system information blocks outside SIB 1. The MIB includes configuration parameters required for obtaining SIB 1. SIB1 includes parameters required to acquire OSI.
Corresponding to the optional steps 101A-E, the optional steps 203A-E are as follows:
Preferably, in step 203A, the identification information is a cell operation frequency band, and the format type of MIB information and/or the format type of DCI information is determined according to the cell operation frequency band.
The terminal equipment obtains the approximate range of the SSB according to the synchronous grid, then blindly searches the SSB, determines the frequency domain position of the SSB, and can determine the current operation frequency band.
If the target information is broadcast information, the terminal device determines an operation band by detecting the PSS and the SSS, and then determines the current broadcast information type according to the corresponding relation between the preset operation band and the broadcast information type. When the target information is the broadcast information MIB, the terminal equipment determines that the broadcast information type corresponding to the target information is the format type 1 of MIB information in the set I through the current operation frequency band; the terminal equipment determines that the format type of the MIB information corresponding to the terminal equipment is MIB information type 2 in the set II through the current operation frequency band. By analogy, if there are more than two types of MIB information formats, each of which corresponds to a different set of operating bands. The terminal device may determine the type of the information format of the MIB according to the current operating frequency band and the correspondence.
Similarly, if the target information includes the fallback DCI information, after the terminal device determines the operation frequency band, the format type of the current fallback DCI information is determined according to the corresponding relationship between the preset operation frequency band and the format type of the fallback DCI information.
Optionally, the target information may also include non-fallback DCI information, and after the terminal device determines the operation frequency band, the format type of the current non-fallback DCI information is determined according to a corresponding relationship between a preset operation frequency band and the format type of the non-fallback DCI information.
If the target information includes two or more of broadcast information, fallback DCI information and non-fallback DCI information, a correspondence between an operation band and format types of multiple information included in the target information may be preset, and the terminal device may determine the format type of the target information according to the current operation band and the preset relationship.
Preferably, in step 203B, the identification information is first information in MIB information; the target information is DCI information, and the format type of the target information is determined according to the first information in the MIB information.
If the current operation frequency band has no preset corresponding relation with the type of the target information, the terminal equipment can determine the format type of the target information according to the MIB information after detecting the PBCH in the SSB. The target information includes DCI information at this time. If the target information is the rollback DCI information, the terminal equipment detects the SSB to acquire the MIB information, and acquires the format type of the rollback DCI information from the MIB information. The terminal device then detects the PDCCH scheduling SIB1 with the format type of the fallback DCI information and other PDCCHs scheduled with the format type of the fallback DCI information.
Preferably, in step 203C, the identification information is second information in the extension MIB information; and the target information is DCI information, and the format type of the target information is determined according to the second information in the extended MIB information.
The terminal equipment acquires SSB, determines MIB information, and detects the extended MIB on E-PBCH opposite to SSB if the MIB information indicates that the extended MIB exists. And extending the format type indication of the target information carried in the MIB.
Preferably, in step 203D, the identification information is third information in SIB 1; the target information is DCI information, and the format type of the target information is determined according to third information in the SIB1 information.
After the terminal equipment completes the downlink synchronization, it needs to receive the SIB1 message. SIB1 message is carried by PDSCH, and if the scheduling information of PDSCH needs to be known in order to receive/decode SIB1, the PDCCH carrying the scheduling information needs to be monitored. However, the PDCCH corresponding to SIB1 is typically transmitted using a fallback DCI format. When the target information includes a fallback DCI format, if the terminal device has not acquired the type of the fallback DCI format in the process of detecting SSB, the PDCCH scrambled by the SI-RNTI for scheduling SIB1 can only use the default fallback DCI format type.
Preferably, in step 203E, the identification information is the fourth information in OSI; the target information is DCI information, and the format type of the target information is determined according to fourth information in the OSI information.
The SIB1 message carries SI scheduling information, which is used to determine CORESET for scheduling the PDCCH of OSI. After acquiring the SIB1 message, the terminal device may determine, according to the indication, the format type of the fallback DCI information according to the fourth information in the OSI.
Step 204, receiving the target information.
Fig. 5 is a flow chart of an embodiment of the method of the present application for a network device.
The method according to any one of the embodiments of the first aspect of the present application, for a network device, includes the following steps 301 to 304:
Step 301, setting a correspondence between identification information and a target information format type, where the target information includes at least one item of MIB information and DCI information, and the network device and the terminal device follow the same protocol, specifically, step 101.
Step 302, determining the format type of the target information based on the identification information or determining the content of the identification information based on the target information according to the corresponding relation between the identification information and the format type of the target information.
Step 303, sending the identification information.
And step 304, the target information is sent according to the format type indicated by the identification information.
Fig. 6 is a schematic diagram of an embodiment of a network device.
The embodiment of the application also provides a network device, and the network device is used for: transmitting the identification information; transmitting the target information according to the format type indicated by the identification information; and sending the target information.
The identification information, as described in steps 101-102, includes at least one of the following information: the cell operating band, first information in MIB information, second information in extension MIB information, third information in SIB1, fourth information in OSI. And when the identification information is the second information, sending indication information in the MIB, wherein the indication information is used for determining whether the extended MIB information exists or not.
In order to implement the above technical solution, the network device 400 provided by the present application includes a network sending module 401, a network determining module 402, and a network receiving module 403.
The network sending module is used for sending the identification information and the target information. And when the identification information is the second information, sending indication information in the MIB, wherein the indication information is used for determining whether the extended MIB information exists or not. Preferably, when the identification information is the third information and the fourth information, in the transmitted fallback DCI information, the CRC bits are scrambled with any one of a C-RNTI, TC-RNTI, CS-RNTI, MCS-RNTI, and P-RNTI.
The network determining module is configured to determine a format type of the target information to be sent based on the already sent identification information according to the correspondence between the identification information and the format type of the target information, or determine the identification information to be sent according to the format type of the finally sent target information.
The network receiving module is used for receiving configuration information for setting the corresponding relation between the identification information and the target information format type.
Specific methods for implementing the functions of the network sending module, the network determining module and the network receiving module are described in the embodiments of the methods of the present application, and are not described here again.
Fig. 7 is a schematic diagram of an embodiment of a terminal device.
The application also provides a terminal device, and the terminal device is used for: receiving the identification information; receiving the target information according to the format type indicated by the identification information; and receiving the target information.
The identification information, as described in steps 101-102, includes at least one of the following information: the cell operating band, first information in MIB information, second information in extension MIB information, third information in SIB1, fourth information in OSI. And when the identification information is the second information, receiving indication information in the MIB, and determining whether the extended MIB information exists according to the indication information.
In order to implement the above technical solution, the terminal device 500 provided by the present application includes a terminal sending module 501, a terminal determining module 502, and a terminal receiving module 503.
The terminal receiving module is used for receiving the identification information and the target information. Configuration information setting correspondence between identification information and the target information format type may also be received. When the identification information is the second information, firstly receiving indication information in the MIB, wherein the indication information is used for determining whether the extended MIB information exists or not, and then receiving the second information according to the indication. Preferably, when the identification information is the third information and the fourth information, the CRC bits are descrambled with any one of the C-RNTI, TC-RNTI, CS-RNTI, MCS-RNTI, and P-RNTI upon receiving the fallback DCI information. The terminal determining module is used for determining the format type of the target information according to the corresponding relation between the identification information and the format type of the target information. And determining whether the extended MIB information exists according to the indication information received in the MIB.
The terminal sending module is used for sending the random access request.
Specific methods for implementing the functions of the terminal sending module, the terminal determining module and the terminal receiving module are described in the embodiments of the methods of the present application, and are not described herein.
The terminal device of the present application may refer to a mobile terminal device or other terminal devices.
Fig. 8 shows a schematic structural diagram of a network device according to another embodiment of the present application. 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. comprising a transmitter and a receiver, providing a means for communicating with various other apparatuses over a transmission medium. The wireless interface performs the communication function with the terminal device, and processes wireless signals through the receiving and transmitting device, 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 for executing any of the embodiments of the application, which computer program runs or changes 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 here again.
Fig. 9 is a block diagram of a terminal device according to 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 terminal device 700 are coupled together by a bus system. Bus systems are used to enable connected 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, keyboard, or pointing device, such as a mouse, trackball, touch pad, or touch screen, among others.
The memory 702 stores executable modules or data structures. The memory may store an operating system and application programs. The operating system includes various system programs, such as a framework layer, a core library layer, a driver layer, and the like, for implementing various basic services and processing hardware-based tasks. The application programs include various application programs such as a media player, a browser, etc. for implementing various application services.
In an embodiment of the application, the memory 702 contains a computer program that executes any of the embodiments of the application, the computer program running or changing 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 performs the steps of the above method in combination with its hardware. In particular, the computer readable storage medium has stored thereon a computer program which, when executed by the processor 701, implements the steps of the method embodiments as described in any of the embodiments above.
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 performed by integrated logic circuitry in hardware or by instructions in software in processor 701. 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, a discrete gate or transistor logic device, a discrete hardware component. The disclosed methods, steps, and logic blocks in the embodiments of the present application 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 application may be embodied directly in the execution of a hardware decoding processor, or in the execution of a combination of hardware and software modules in a decoding processor.
It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. In one typical configuration, the device of the present application includes one or more processors (CPUs), an input/output user interface, a network interface, and 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 application thus 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 of the embodiments of the application. For example, the memory 603, 702 of the present application may include non-volatile memory in a computer-readable medium, random Access Memory (RAM) and/or non-volatile memory, etc., such as read-only memory (ROM) or 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 storage media for a computer include, but are not limited to, phase change memory (PRAM), static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), other format 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 Disks (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium, which can be used to store information that can be accessed by a computing device. Computer-readable media, as defined herein, does not include transitory computer-readable media (transmission media), such as modulated data signals and carrier waves.
Based on the embodiments of fig. 6-9, the present application also proposes a mobile communication system comprising at least 1 embodiment of any one of the terminal devices of the present application and/or at least 1 embodiment of any one of the network devices of the present application.
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 one … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element.
In the present application, "first", "second", "third" and "fourth" are intended to distinguish a plurality of objects having the same name, and unless otherwise specified, have no other special meaning.
The foregoing is merely exemplary of the present application and is not intended to limit the present application. Various modifications and variations of the present application will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the application are to be included in the scope of the claims of the present application.
Claims (20)
1. An information format type determining method, characterized by comprising the steps of:
Transmitting identification information, wherein the identification information is information acquired by the terminal equipment before detecting target information, and comprises any of the following items: cell operating band, first information in a main information block, second information in an extended main information block, third information in SIB1, fourth information in other system information;
Transmitting target information, and determining the format type of the target information according to the corresponding relation between the identification information and the format type of the target information, wherein the target information comprises at least one of main information block information and downlink control information; the length or the content of at least one field in the target information is different, so that the format of the target information is divided into different format types.
2. The method for determining a type of information format according to claim 1, wherein,
The identification information is a cell operating frequency band,
The format type 1 of the MIB information corresponds to the set I of the operation frequency bands, the format type 2 of the MIB information corresponds to the set II of the operation frequency bands, and/or the ultra-high frequency operation frequency bands, the format of the preset rollback DCI information is the type 1, the medium-low frequency operation frequency bands, and the format of the preset rollback DCI information is the type 2.
3. The method for determining a type of information format according to claim 1, wherein,
The identification information is first information in the main information block information;
the primary information block indicates the first information by using a 1-bit "spark" field, and corresponds to the format type of the downlink control information of the current wireless communication application.
4. The method for determining a type of information format according to claim 1, wherein,
The identification information is second information in the extended main information block information;
A reserved field of 1 bit "spark" in MIB information indicates the presence or absence of extension MIB information; and if the extension MIB information exists, carrying second information in the extension MIB information for indicating the format type of the target information.
5. The method for determining a type of information format as claimed in claim 4, further comprising,
Transmitting indication information in the main information block information for determining whether the extended main information block information exists.
6. The information format type determining method according to claim 5, further comprising,
The extended main information block is carried in an extended PBCH, and the relative position of the resources of the extended main information block and the resources occupied by the SSB is preset.
7. The method for determining a type of information format according to claim 1, wherein,
The identification information is third information in SIB 1;
the SIB1 message carries the format type of the fallback DCI information through the third information, and the format type of the fallback DCI information scrambled with the SI-RNTI in other CORESET except CORESET.
8. The method for determining a type of information format according to claim 1, wherein,
The identification information is fourth information in other system information;
The format type of the fallback DCI information is determined by the fourth information in OSI.
9. The method for determining a type of information format according to claim 1, wherein,
The target information is fallback downlink control information, and the target information scrambles CRC bits with any one of C-RNTI, TC-RNTI, CS-RNTI, MCS-RNTI, P-RNTI.
10. The method according to any one of claims 1 to 9, for a network device,
The network equipment sends the identification information;
And sending the target information according to the format type indicated by the identification information.
11. The method of claim 10, further comprising,
The network device transmits indication information in the main information block information, for indicating whether extended main information block information exists.
12. A method according to any one of claims 1 to 9 for use in a terminal device,
Receiving the identification information;
And receiving the target information according to the format type indicated by the identification information.
13. The method of claim 12, further comprising,
And acquiring indication information from the main information block information, and determining whether the extended main information block information exists.
14. A network device for implementing the method according to any one of claims 1-13, characterized in that,
At least one module in the network device is configured to implement at least one of the following functions: transmitting the identification information; and sending the target information according to the format type indicated by the identification information.
15. A network device as recited in claim 14, further comprising,
And at least one module in the network equipment is used for sending indication information in the main information block information to indicate whether the extended main information block information exists.
16. A terminal device for implementing the method according to any one of claims 1-9, characterized in that,
At least one module in the terminal device is configured to implement at least one of the following functions: receiving the identification information; and receiving the target information according to the format type indicated by the identification information.
17. A terminal device as in claim 16, further comprising,
And at least one module in the terminal equipment is used for acquiring indication information from the main information block information and determining whether the extended main information block information exists.
18. A communication device, comprising: memory, a processor and a computer program stored on the memory and executable on the processor, which when executed by the processor performs the steps of the method according to any one of claims 1 to 13.
19. A computer readable medium having stored thereon a computer program which, when executed by a processor, implements the steps of the method according to any of claims 1 to 13.
20. A mobile communication system comprising at least 1 network device according to any one of claims 14 to 15 and/or at least 1 terminal device according to any one of claims 16 to 17.
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