CN114285521A

CN114285521A - Information format type determining method and equipment

Info

Publication number: CN114285521A
Application number: CN202111580381.1A
Authority: CN
Inventors: 闫志宇; 王志勤; 沈霞; 杜滢; 刘晓峰; 焦慧颖
Original assignee: China Academy of Information and Communications Technology CAICT
Current assignee: China Academy of Information and Communications Technology CAICT
Priority date: 2021-12-22
Filing date: 2021-12-22
Publication date: 2022-04-05
Anticipated expiration: 2041-12-22
Also published as: CN114285521B

Abstract

The application discloses an information format type determining method, 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 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 differentiated into different format types. The application also includes an apparatus for implementing the method. The method and the device solve the problem that the MIB information and the backspacing DCI information format of the fixed field do not adapt to various service requirements.

Description

Information format type determining method and equipment

Technical Field

The present application relates to the field of wireless communication technologies, and in particular, to a method and a device for determining an information format type.

Background

In the NR system, the SSB is first detected in the cell search process of the terminal device. The SSB includes PSS, SSS and PBCH. An MIB (Master Information Block) Information Block carried in the PBCH is used to indicate the most basic configuration Information of a cell. The 3GPP TS 38.331 Vg60 defines the format and content of MIB information. Referring to 3GPP TS 38.331 Vg70, the MIB information further includes 8-bit additional information, which carries information such as system frame number, half frame identifier, SSB index identifier, etc.

A PDCCH (Physical Downlink Control Channel) carries DCI (Downlink Control Information). The DCI includes PDSCH and PUSCH transmission resource scheduling information, an uplink power control instruction, a slot format instruction, and the like. The PDCCH dynamically sends DCI to the terminal devices, which need to read these control information, determine when (time domain) and where (frequency domain) and how to demodulate/decode PDSCH/PUSCH, adjust transmission power, etc.

The Resource for transmitting DCI is a Control Resource SET (CORESET), and the terminal device acquires Control information by monitoring the CORESET at a specific monitoring time, and this process is implemented by performing blind detection on a PDCCH candidate SET in a configured search space.

Since different downlink control information sizes are usually different, a different format is 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 for scheduling PDSCH include format 1_0 of fallback DCI information and formats 1_1 and 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 schedules such as SIB1, OSI, Msg2, Msg4, etc. The specific service type of format scheduling of the fallback DCI information is distinguished according to an RNTI (Radio Network temporary Identity ) with a scrambled CRC. CRC information scrambles different RNTIs to identify downlink control information with different functions. The format of the fallback DCI information supports the most basic scheduling, and data scheduling is usually performed in an ambiguous phase where the terminal device does not receive any RRC configuration or RRC reconfiguration. Referring to TS 3GPP 38.211 Vg70, when CRC is scrambled by SI-RNTI, the PDCCH of format 1_0 of the fallback DCI information is used for carrying scheduling information of system information; when CRC is scrambled by RA-RNTI/MsgB-RNTI, the PDCCH with the format 1_0 of backspacing DCI information is used for bearing scheduling information of the random access response information of the terminal equipment; when CRC is scrambled by TC-RNTI, scheduling information of Msg4 is carried by PDCCH of format 1_0 of backspacing DCI information; when CRC is scrambled by C-RNTI/CS-RNTI/MCS-RNTI, terminal device-specific PDSCH scheduling information is carried by PDCCH of format 1_0 of fallback DCI information. Part of information fields in the format of the non-fallback DCI information can be configured through high-level signaling, and different scheduling scenes, service requirements and the like are supported.

From the above background art it appears that: the MIB information includes system frame number, subcarrier common spacing, SSB subcarrier offset, PDCCH related configuration information for demodulation of RMSI, etc. The MIB information format includes a reserved field of 1-bit "spare". In addition to this, the format and fields of the MIB information are fixed. In the format of the fallback DCI information, the length and content of each field are fixed and not configurable. In the format of the non-fallback DCI information, although the length and content of a part of fields may be configured, the configuration information may be sent to the terminal device only after the terminal device completes random access.

The problems of the prior art are as follows: the evolution of wireless communication networks may support more types of application scenarios, support a wider frequency range, support a more diverse subcarrier spacing configuration. For example, the system may support a greater number of SSBs, facilitating finer-grained beam scanning. For another example, if a subcarrier spacing configuration with a larger subcarrier width is supported, the corresponding 1 timeslot length is shorter than that of the prior art. If the format 1_0 of the DCI information still uses the same resource allocation field, the efficiency of resource scheduling and the served performance are limited. For PDSCH scheduling in an ultra-high frequency range, the frequency domain resource allocation is of few types, a frequency domain allocation result can be identified by using 1-bit information in a frequency resource allocation field, and the time domain allocation is of more types and needs to expand the length of a time domain resource allocation field. The evolution of wireless communication networks may also support a wider range of service applications, such as supporting ground-to-air communications and satellite communications, faced with very large air propagation delays. If the maximum number of HARQ processes in the terrestrial-air communication and satellite communication systems is still kept at 16, the HARQ process number in format 1_0 corresponding to DCI information is kept at 4 bits, which affects the peak throughput performance of the terminal device. Therefore, the formats of MIB information and fallback DCI information of the fixed field restrict the evolution and service application scenarios of the wireless communication network.

Disclosure of Invention

The application provides an information format type determining method and equipment, which solve the problem that the MIB information and the backspacing DCI format of a fixed field 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 the identification information and the 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 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 distinguished into different format types.

Preferably, the identification information is a cell operating frequency band, and the format type of the MIB information and/or the format type of the DCI information are determined according to the cell operating 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 first information in the MIB information.

Preferably, the identification information is second information in the extended MIB information; and the target information is DCI information, and the format type of the target information is determined according to second information in the extended MIB information. It is further preferred that indication information for determining whether the extended MIB information exists is transmitted in MIB information. 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 the 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 fallback DCI information, and the target information scrambles CRC bits by any one of C-RNTI, TC-RNTI, CS-RNTI, MCS-RNTI and P-RNTI.

The method according to any one of the embodiments of the first aspect of the present application, applied to 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 obtains the indication information from MIB information, and determines whether the extended MIB information exists

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:

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 sends indication information in MIB information, which is used to indicate whether the extended MIB information exists.

In a second aspect, the present application further provides a network device, configured to implement the method in any one of the first aspects of the present application, where at least one module in the network device is configured to perform at least one of the following functions: at least one module in the network device, configured to implement at least one of the following functions: sending 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, indicating whether the extended MIB information exists.

In a third aspect, the present application further provides a terminal device, configured to implement the method in any of the first aspects of the present application, where at least one module in the terminal device is configured to: 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 in MIB information and determine whether the extended MIB information exists.

In a fourth aspect, the present application further provides a communication device, including: memory, a processor and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing 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 present application.

In a sixth aspect, the present application further proposes a mobile communication system, which includes at least one network device according to any embodiment of the second aspect of the present application and/or at least one terminal device according to any embodiment of the third aspect of the present application.

The embodiment of the application adopts at least one technical scheme which can achieve the following beneficial effects:

the problem that the field with fixed target information format restricts the evolution of a wireless communication network and the evolution of a service application scene in the prior art is solved, the effectiveness and the high efficiency of downlink control information are improved, and the system efficiency is improved.

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 diagram of the structure of SSB;

figure 3 is a schematic diagram of the location of the transmission resource E-PBCH of the extended MIB;

FIG. 4 is a flowchart of an embodiment of a method of the present application for a terminal device;

FIG. 5 is a flow chart of an embodiment of a 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 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.

The invention predefines the format types of various broadcast information and/or the format types of DCI information. The field configuration of the format type of different broadcast information and/or the format type of DCI information is different. The field configuration being different means that the length of at least one field, or the meaning of at least one field, is different.

The terminal equipment acquires the identification information, and determines the format type of the broadcast information and/or the format type of the DCI information according to the identification information (the broadcast information and/or the DCI information are called as target information). The identification information is information that the terminal device acquires before detecting the target information. Such as the cell operating band, the identity in the cell broadcast channel, the identity in the cell extension broadcast channel, or the identity of the Remaining Minimum System Information (RMSI) and Other System Information (OSI).

By corresponding different identification information and format types of the target information, the format of the broadcast information and the format of the DCI information can be adapted for different wireless communication applications, and effective and efficient scheduling and system efficiency are guaranteed.

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 an information format type determining method, which comprises the following steps:

step 101, setting a corresponding relationship between the identification information and the format type of target information, where the target information includes at least one of MIB information and DCI information.

The target information is divided into different types, so that the method is suitable for different wireless communication applications, and can ensure effective and efficient scheduling and system efficiency. The identification information is information that the terminal device acquires before detecting the target information, and is used for corresponding to the detection target information. The identification information is different according to 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, a correspondence relationship between the cell operating band and the format type of the MIB information (and/or DCI information) is set.

The operating band of the network is divided in absolute frequencies. The method specifically comprises the following steps: in the range of 0-100 GHz, the global frequency grid divides the frequency band of 100GHz into 3279165 grids, and the grids are numbered from 0 to 3279165. Each number represents an absolute frequency domain position and is referred to as NR ARFCN. The ARFCN can divide the frequency band of 0-100 GHz into a plurality of operation frequency bands, besides, the network divides the frequency range into synchronous grids, and the center of the SSB is aligned with the synchronous grids. The frequency domain position of each synchronization grid has its unique number GSCN (global synchronization channel number), and each GSCN number corresponds to a frequency domain position as shown in the following table:

this table may correspond to GSCNs within each operating band. The following table shows exemplary operating band to GSCN correspondence. 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 the MIB information corresponds to set I of the operating frequency bands, and format type 2 of the MIB information corresponds to set II of the operating frequency bands; if the system supports Q₁A different beam scans SSB, then the first field in the format of MIB information includes W₁A bit for identifying the Q₁An SSB index; if the system supports Q₂A different beam scans SSB, then the first field in the format of MIB information includes W₂A bit for identifying the Q₂An SSB index, W₁≠W₂。

For example, the format types of the fallback DCI information are distinguished according to the length of at least one field or the information carried by at least one field. According to the determined format type of the fallback DCI information, the format length of the corresponding fallback DCI information can be determined, and the meaning of each field of the format of the fallback DCI information is determined when CRC is scrambled by various RNTIs. For example, for an operating frequency band with ultrahigh frequency, the format of the fallback DCI information is preset to be type 1, and when CRC is scrambled by SI-RNTI/C-RNTI/TC-RNTI/CS-RNTI/MCS-RNTI/P-RNTI, the length of the time domain resource allocation field is N₁Bit, frequency domain resource allocation field length is N₂A bit. Presetting the format of the backspacing DCI information as type 2 in the operating frequency band of medium and low frequency, and when the CRC is scrambled by SI-RNTI/C-RNTI/TC-RNTI/CS-RNTI/MCS-RNTI/P-RNTI, the length of the time domain resource allocation field is N₃Bit, frequency domain resource allocation field length is N₄A bit. Wherein N is₁+N₂＝N₃+N₄，N₁>N₃. Thus, for ultra-high frequenciesIn the PDSCH scheduling within the range, a shorter frequency domain allocation field length and a longer time domain allocation field length can be used, so that the effectiveness and the efficiency of the scheduling are ensured, and more application requirements of network evolution are met. As another example, for an operation frequency band possibly applied to non-terrestrial communication, the format of the fallback DCI information is preset to be type 3, and when CRC is scrambled by SI-RNTI/C-RNTI/TC-RNTI/CS-RNTI/MCS-RNTI/P-RNTI, the HARQ process number indication field comprises L₁A bit. For an operation frequency band which cannot be applied to non-terrestrial communication, the format of the backspacing DCI information is preset to be type 4, and when CRC is scrambled by SI-RNTI/C-RNTI/TC-RNTI/CS-RNTI/MCS-RNTI/P-RNTI, the HARQ process number indication field comprises L₂Bit, wherein L₁>L₂. Therefore, a larger number of HARQ processes can be used in non-ground communication applications such as ground-air communication and satellite communication, the maximum number of HARQ processes is kept to be 16 in ground communication applications, different application requirements of network evolution are met, and effectiveness and high efficiency of scheduling are guaranteed.

If the target information includes two or more of broadcast information, fallback DCI information, and non-fallback DCI information, a correspondence between the operating frequency band and the format type of each of the various information included in the target information may be preset. For example, the target information includes broadcast information and fallback DCI information, and a set I of the preset operating frequency band corresponds to format type 1 of the MIB information and format type 1 of the fallback DCI information; the set II of operating 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 corresponding relationship between the first information in the MIB information and the format type of the DCI information.

The format of the MIB information is fixed, including a reserved field of 1-bit "spare". The 1-bit "spare" field may be used to indicate the first information corresponding to the format type of DCI information of the current wireless communication application.

The format types of the fallback DCI information are distinguished according to the length of at least one field or 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-fallback 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, step 101C sets a corresponding relationship between the second information in the extended MIB information and the format type of the DCI information.

Although the reserved field of 1-bit "spare" in the MIB information may refer to a format type of the target information, 1 bit can indicate only two types. To adapt to different wireless communication applications, more format types of target information may need to be supported. Therefore, indication information for determining whether the extended MIB information exists is transmitted in the MIB information, and the presence or absence of the extended MIB information may be indicated in a reserved field of "spare" of 1 bit of the MIB information, for example. And if the extended MIB information exists, carrying second information in the extended MIB information for indicating the format type of the target information.

FIG. 2 is a schematic diagram of the structure of SSB. 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 the SSB is preset. The SSB occupies 0 ~ 3 in time domain, and 4 symbols occupy 20 RBs (240 subcarriers) in 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; in order to protect PSS and SSS, there are different subcarriers Set0 at both ends. 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 subcarriers occupied by SSS and subcarriers Set0 for protecting SSS. In this embodiment, the relative position between the E-PBCH and the SSB occupied by the extended MIB information is preset. Taking fig. 3 as an example, the relative position of the E-PBCH and the SSB in time and frequency is preset, and is several PRBs adjacent to the lowest subcarrier of the SSB in the frequency domain and having the same number of symbols in the time domain.

For another example, step 101D sets a correspondence between the third information in SIB1 and the format type of the DCI information.

The SIB1 message may carry 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 another CORESET except for the CORESET0, for adapting to different wireless communication applications.

In the backspacing DCI information, any RNTI of C-RNTI/TC-RNTI/CS-RNTI/MCS-RNTI/P-RNTI is used for scrambling CRC.

The format types of different fallback DCI information are distinguished according to the length of at least one field or the information carried by at least one field. Preferably, if the format type of the fallback DCI information is determined by the SIB1, the total length of fields of the format types of different fallback DCI information is the same, and information carried by at least one field is different. Therefore, the PDCCH of the format of the backspacing DCI information with different RNTIs for scrambling CRC can be ensured to be detected in a blind mode with the same length, and the phenomenon that the PDCCH corresponding to the format of the backspacing DCI information is detected to increase the blind detection complexity of the terminal equipment is avoided. For example, the format types of the various fallback DCI information are all L in length. The MIB information includes a CORESET0 resource location corresponding to a Type0PDCCH for carrying SIB1 information, and a candidate set for detecting a Type0-PDCCH within CORESET 0. The format of the fallback DCI information for scrambling the CRC with the SI-RNTI within CORESET0 is a preset format type of the fallback DCI information. The format type of the fallback DCI information for scrambling the CRC with other RNTIs is obtained in the SIB1 information.

In the prior art, the content of the SIB1 information can be referred to 3GPP TS 38.331 v.g 60. The format type of the fallback DCI information carried in the SIB1 information may be directly indicated by the first information in the SIB information, or may be implicitly indicated by the first information. For example, the SIB1 information includes PLMN information for distinguishing different mobile communication operators in a country or a region. 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 in different areas, may have different types of service. Therefore, the format type of the fallback DCI information corresponding to the service type can be implicitly indicated according to the PLMN information.

For another example, step 101E sets a correspondence relationship between the fourth information in OSI and the DCI information format type.

The format type of the fallback DCI information is determined by fourth information in the OSI. Similar to step 101D, the total lengths of the fields of different types of the format of the fallback DCI information are the same, and the information carried by at least one field is different. Therefore, the PDCCH of the formats of the backspacing DCI information scrambled by different RNTIs can be ensured to be used for blind detection with the same length, and the phenomenon that the blind detection complexity of the terminal equipment is increased by the PDCCH of the backspacing DCI format is avoided.

And 102, transmitting identification information, wherein the identification information is used for determining the format type of the target information.

Before receiving broadcast information and backspacing DCI information, the terminal equipment determines an operating frequency band by detecting PSS and SSS; the identification information is a cell operating frequency band, and the format type is determined by using the corresponding relation between at least two types of preset cell operating frequency bands and target information.

After the terminal equipment receives the broadcast information (including the MIB information and the extended MIB), the terminal equipment receives backspacing DCI information or non-backspacing 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 the extended MIB, and a reserved field in the MIB information carries an existence indication of the extended MIB information. And when the identification information is second information in the extended MIB, carrying the existence indication of the extended MIB information in a reserved field in the MIB information.

The identification information is third information in SIB1 or fourth information in OSI, and information carried by at least one field in at least two types of target information is different.

Since the DCI information indicates resources for carrying the PDSCH, the SIB1 information is included in the PDSCH, and the SIB1 further indicates CORESET for scheduling the OSI PDCCH, the terminal device shall use the default format type of the fallback DCI information before receiving the SIB1 information and the OSI 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 the SIB1 or OSI. In particular, the present invention applies a plurality of format types of the fallback DCI information, and 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 scheduling information of OSI are carried using a preset type of the fallback DCI format. And after the format type of the backspacing DCI information of CRC scrambled by any one of SI-RNTI, C-RNTI, TC-RNTI, CS-RNTI, MCS-RNTI and P-RNTI carried in SIB1 or OSI information is obtained, the target information is received by using the format type.

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 is divided into different format types.

And 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 operating frequency band, and the MIB information format type and/or the broadcast information format type are determined according to the cell operating frequency band.

Preferably, the identification information is second information in the extended MIB information; and the target information is DCI information, and the format type of the target information is determined according to second information in the extended MIB information.

The above steps 101 to 103 have a sequential relationship. Regarding step 104, when the method is used to implement a network device, step 104 should precede step 102 or 103 for each specific format type target information to be sent. When the method is used to implement a terminal device, step 104 should be after step 103 and receive the target information for each specific format type of target information to be transmitted.

Fig. 4 is a flowchart of an embodiment of a method of the present application for a terminal device.

step 201, setting a corresponding relationship between the identification information and a format type of target information, where the target information includes at least one of MIB information and DCI information, and the terminal device and the network device follow the same protocol, as in step 101.

Step 202, receiving the identification information.

And 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 the terminal device obtaining information in the process of cell search is as follows: and finishing downlink synchronization and system information acquisition after the terminal equipment is started. Specifically, the terminal device detects SSB (Synchronization Signal Block) and system information. SSB is composed of PSS (Primary Synchronization Signals), SSS (Secondary Synchronization Signals), and PBCH (Physical Broadcast Channel). In the SSB, the terminal device first detects the PSS and SSS, and then acquires MIB information in the PBCH of the SSB. The system information includes, in addition to the MIB, RMSI and OSI,. RMSI is transmitted through system information block 1(SIB1), and OSI is transmitted through other system information blocks than SIB 1. The MIB includes configuration parameters required to acquire the SIB 1. The SIB1 includes parameters needed to acquire OSI.

Corresponding to optional steps 101A-E, optional steps 203A-E are as follows:

preferably, in step 203A, the identification information is a cell operating frequency band, and the format type of the MIB information and/or the format type of the DCI information are determined according to the cell operating frequency band.

The terminal device 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 simultaneously can determine the current operating frequency band.

If the target information is broadcast information, the terminal equipment determines an operating frequency band by detecting the PSS and the SSS, and then determines the current broadcast information type according to the corresponding relation between the preset operating frequency band and the broadcast information type. When the target information is broadcast information MIB, the terminal equipment determines that the broadcast information type corresponding to the target information is the format type 1 of the MIB information in the set I through the current operating frequency band; the terminal equipment determines that the format type of the corresponding MIB information is MIB information type 2 in the set II through the current operating frequency band. And by analogy, if more than two types of the MIB information formats exist, the MIB information formats correspond to different operation frequency band sets respectively. The terminal device may determine the type of the information format of the MIB according to the current operating frequency band and the corresponding relationship.

Similarly, if the target information includes the fallback DCI information, after the terminal device determines the operating frequency band, the terminal device determines the format type of the current fallback DCI information according to the corresponding relationship between the preset operating frequency band and the format type of the fallback DCI information.

Optionally, the target information may also include non-fallback DCI information, and after determining the operating frequency band, the terminal device determines the format type of the current non-fallback DCI information according to a correspondence between a preset operating 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, the corresponding relationship between the operating frequency band and the format types of the 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 operating frequency 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 first information in the MIB information.

If there is no preset corresponding relationship between the current operating frequency band and the type of the target information, the terminal device may determine the format type of the target information according to the MIB information after detecting the PBCH in the SSB. The target information at this time includes DCI information. If the target information is the backspacing DCI information, the terminal equipment detects the SSB to obtain the MIB information and obtains the format type of the backspacing DCI information from the MIB information. The terminal device then detects the PDCCH scheduling SIB1 with the format type of the fallback DCI information, as well as other PDCCHs scheduled with the format type of the fallback DCI information.

Preferably, in step 203C, the identification information is second information in the extended MIB information; and the target information is DCI information, and the format type of the target information is determined according to second information in the extended MIB information.

The terminal equipment acquires the SSB and determines the MIB information, and if the MIB information indicates that the extended MIB exists, the terminal equipment detects the extended MIB on the E-PBCH relative to the SSB. And the format type indication of the target information carried in the extended MIB.

Preferably, step 203D, the identification information is the third information in SIB 1; the target information is DCI information, and the format type of the target information is determined according to the third information in the SIB1 information.

After the terminal device completes downlink synchronization, it needs to receive the SIB1 message. The SIB1 message is carried by the PDSCH, and if the scheduling information of the PDSCH needs to be known to receive/decode SIB1, the PDCCH carrying the corresponding 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 the fallback DCI format, the SI-RNTI-scrambled PDCCH for scheduling the SIB1 can only use the default fallback DCI format type if the terminal device has not acquired the type of the fallback DCI format in the SSB detection process.

Preferably, step 203E, 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 SIB1 message carries scheduling information for the SI to determine the CORESET that schedules the OSI PDCCH. After acquiring the SIB1 message, the terminal device may detect OSI according to the indication, and determine the format type of the fallback DCI information through the fourth information in OSI.

And step 204, receiving the target information.

Fig. 5 is a flowchart of an embodiment of a method of the present application for a network device.

The method of any one embodiment of the first aspect of the present application, for a network device, includes the following steps 301 to 304:

step 301, setting a corresponding relationship between identification information and a format type of target information, where the target information includes at least one of MIB information and DCI information, and the network device and the terminal device follow the same protocol, as in step 101.

Step 302, determining the format type of the target information based on the identification information according to the corresponding relationship between the identification information and the format type of the target information, or determining the content of the identification information based on the target information.

Step 303, sending the identification information.

And step 304, sending the target information according to the format type indicated by the identification information.

Fig. 6 is a schematic diagram of an embodiment of a network device.

An embodiment of the present application further provides a network device, where, using the method according to any one of the embodiments of the present application, the network device is configured to: sending the identification information; sending the target information according to the format type indicated by the identification information; and sending the target information.

The identification information, as stated in steps 101 to 102, includes at least one of the following information: a cell operating band, first information in MIB information, second information in extended MIB information, third information in SIB1, fourth information in OSI. And when the identification information is second information, sending indication information in the MIB, wherein the indication information is used for determining whether the extended MIB information exists.

In order to implement the foregoing technical solution, the network device 400 provided in the present application includes a network sending module 401, a network determining module 402, and a network receiving module 403.

And the network sending module is used for sending the identification information and the target information. And when the identification information is second information, sending indication information in the MIB, wherein the indication information is used for determining whether the extended MIB information exists. Preferably, when the identification information is the third information and the fourth information, the CRC bits in the transmitted fallback DCI information are scrambled by any one of C-RNTI, TC-RNTI, CS-RNTI, MCS-RNTI and P-RNTI.

And the network determining module is used for determining the format type of the target information to be sent based on the sent identification information according to the corresponding relation between the identification information and the format type of the target information, or determining the identification information to be sent according to the format type of the target information to be sent finally.

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.

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.

Fig. 7 is a schematic diagram of an embodiment of a terminal device.

The present application further provides a terminal device, which uses the method of any one of the embodiments of the present application, and is configured to: 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 stated in steps 101 to 102, includes at least one of the following information: a cell operating band, first information in MIB information, second information in extended MIB information, third information in SIB1, fourth information in OSI. And when the identification information is 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 foregoing technical solution, the terminal device 500 provided in the present application includes a terminal sending module 501, a terminal determining module 502, and a terminal receiving module 503.

And the terminal receiving module is used for receiving the identification information and the target information. Configuration information that sets a correspondence relationship between the identification information and the format type of the target information may also be received. When the identification information is 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 and when the fallback DCI information is received, the CRC bit is descrambled by any one of C-RNTI, TC-RNTI, CS-RNTI, MCS-RNTI and P-RNTI. And 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.

And the terminal sending module is used for sending a random access request.

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 device can refer to a mobile terminal device or other terminal devices.

Fig. 8 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. 9 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 formats 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. 6 to 9, the present application further provides a mobile 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.

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.

It should be noted that the terms "first", "second", "third", and "fourth" in the present application are used to distinguish a plurality of objects having the same name, and unless otherwise specified, do not have any other special meaning.

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

1. A method for determining a type of an information format, comprising the steps of:

transmitting the identification information and the target information;

determining the format type of 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 MIB information and DCI 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 distinguished into different format types.

2. The information format type determining method of claim 1,

the identification information is a cell operating frequency band,

and determining the format type of the MIB information and/or the format type of the DCI information according to the cell operation frequency band.

3. The information format type determining method of claim 1,

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 first information in the MIB information.

4. The information format type determining method of claim 1,

the identification information is second information in the extended MIB information;

and the target information is DCI information, and the format type of the target information is determined according to second information in the extended MIB information.

5. The information format type determining method of claim 4, further comprising,

transmitting indication information in the MIB information for determining whether the extended MIB information exists.

6. The information format type determining method of claim 5, further comprising,

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 the SSB is preset.

7. The information format type determining method of claim 1,

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 the third information in the SIB1 information.

8. The information format type determining method of claim 1,

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.

9. An information format type determining method as claimed in claim 7, 8,

the target information is backspacing DCI information, and the target information is used for scrambling CRC bits by any one of C-RNTI, TC-RNTI, CS-RNTI, MCS-RNTI and P-RNTI.

10. The method according to any of claims 1 to 9, for a network device,

the network equipment sends the identification information;

11. The method of claim 10, further comprising,

and the network equipment sends indication information in the MIB information to indicate whether the extended MIB information exists or not.

12. The method according to any of claims 1 to 9, for a terminal device,

receiving the identification information;

13. The method of claim 12, further comprising,

and acquiring the indication information from the MIB information, and determining whether the extended MIB information exists.

14. A network device for implementing the method of any one of claims 1 to 13,

at least one module in the network device, configured to implement at least one of the following functions: sending the identification information; and sending the target information according to the format type indicated by the identification information.

15. The network device of claim 14, further comprising,

at least one module in the network device is configured to send indication information in MIB information to indicate whether the extended MIB information exists.

16. A terminal device for implementing the method of any one of claims 1 to 9,

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. The terminal device according to claim 16, further comprising,

and at least one module in the terminal equipment is used for acquiring the indication information in the MIB information and determining whether the extended MIB information exists or not.

18. A communication device, comprising: memory, processor and computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps of the method according to any one of claims 1 to 13.

19. 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 13.

20. A mobile communication system comprising at least 1 network device according to any of claims 14 to 15 and/or at least 1 terminal device according to any of claims 16 to 17.