WO2022047756A1 - Method for transmitting system information block, apparatus, and system - Google Patents

Abstract

A method for transmitting a system information block (SIB), an apparatus and a system. Said method comprises: a network device determining a first offset; and the network device sending a first SIB (SIB1) to a terminal device, the first SIB1 comprising the first offset and first system information (SI) scheduling information, the first SI scheduling information being scheduling information of an SI message in a first SI message list, and the first SI message list comprising a first SI message, and the first offset and the first SI scheduling information being used for determining a starting position of a first SI window of the first SI message.

Description

A method, device and system for transmitting system information block technical field

The present application relates to the field of wireless communication technologies, and in particular, to a method, apparatus and system for transmitting system information blocks.

Background technique

In a mobile communication system, such as a new radio (NR) system or a long term evolution (LTE) system, after the terminal device obtains downlink synchronization with the cell through cell search, it needs to obtain the system information of the cell. , SI) in order to access the cell and work normally in the cell.

The system information mainly includes: master information block (MIB), system information block (SIB), etc. Among them, 14 types of SIBs are defined: from SIB type (type) 1 to SIB type 14, which are abbreviated as SIB1, SIB2, ..., SIB14 respectively. SIBs other than SIB1 are also called other system information (OSI).

SIBs are sent through SI messages, and each SIB can only be included in one SI message, but OSIs of the same period can be included in the same SI message for periodic sending. Different SI messages are scheduled in different SI windows and sent periodically.

When the network device needs to send a large amount of system information or the system information increases, the terminal device cannot obtain the system information smoothly, which reduces the reliability of the system.

SUMMARY OF THE INVENTION

The purpose of the present application is to provide a method, device and system for transmitting system information blocks, so as to improve the reliability of the system.

In a first aspect, the present application provides a method for transmitting a system information block, comprising: a network device determining a first offset; the network device sending a first system information block SIB1 to a terminal device, where the first SIB1 includes the the first offset and the first SI scheduling information, the first SI scheduling information is the scheduling information of the SI message in the first SI message list, and the first SI message list includes the first system information SI message; the first offset The shift amount and the first SI scheduling information are used to determine the starting position of the first SI window of the first SI message.

Through the above method, the network device indicates the starting position of the first SI window of the first SI message through the first offset, so that the terminal device can accurately determine the position where the first SI message is received, reducing the number of times the terminal device receives the first SI message. The possibility of SI message failure increases the reliability of the system.

The method may be performed by a communication device or a communication device, such as a chip, capable of supporting the functions required by the communication device to implement the method. Exemplarily, the execution body may be a network device, or a chip provided in the network device for implementing the function of the network device, or other components for implementing the function of the network device.

In an optional implementation manner, the first SI message is located in a first SI message list in the first SIB1, the first SI message list further includes a second SI message, the first SIB1 A second offset is also included, and the second offset is used to determine the starting position of the SI window of the second SI message.

In an optional implementation manner, the second offset is different from the first offset.

In an optional implementation manner, the first SI message list further includes a third SI message, and the first offset is further used to determine the starting position of the SI window of the third SI message.

In an optional implementation manner, the first SIB1 includes a first SI message list, a third SI message list, and a first positioning SI message list; the first offset is based on the third SI message The sum of the number of SI messages in the list is determined; or, the first offset is determined according to the sum of the number of SI messages in the third SI message list and the first positioning SI message list; or, the first offset is a predetermined amount. set value. Wherein, the third SI list may be schedulingInfoList. The first offset may be a numerical value, or may be an offset value based on an existing numerical value, for example, a time domain offset value based on an existing SI window.

In an optional implementation manner, the system frame number SFN and time slot number a where the starting position of the first SI window corresponding to the first SI message is located satisfy the following formula: SFN mod T=FLOOR(y/ N); a=y mod N; wherein, y=x+Δ×w, or y=x+Δ; x is determined according to the first SI scheduling information, Δ is the first offset, and w is the length of the first SI window; FLOOR() is a round-down operation, mod is a remainder operation, N is the number of time slots included in a radio frame, and T is the transmission period of the first SI message.

In an optional implementation manner, x=(n−1)×w, n is the sequence number of the first SI message in the first SI message list, and the SI in the first SI message list Messages are numbered from 1; or, x=n×w, where n is the sequence number of the first SI message in the first SI message list, and the SI messages in the first SI message list are numbered from 0.

In a second aspect, the present application provides a method for transmitting a system information block, including a terminal device receiving a first system information block SIB1 from a network device, where the first SIB1 includes a first offset and first SI scheduling information; The first SI scheduling information is scheduling information of SI messages in a first SI message list, and the first SI message list includes a first system information SI message; the terminal device according to the first SI scheduling information, the first SI message list An offset determines the starting position of the first SI window of the first SI message; the terminal device receives the first SI message within the first SI window.

The method may be performed by a communication device or a communication device, such as a chip, capable of supporting the functions required by the communication device to implement the method. Exemplarily, the execution body may be a terminal device, or a chip provided in the terminal device for implementing the function of the terminal device, or other components for implementing the function of the terminal device.

In an optional implementation manner, the first SI message is located in a first SI message list in the first SIB1, the first SI message list further includes a second SI message, the first SIB1 A second offset is also included, and the second offset is used to determine the starting position of the SI window of the second SI message.

In an optional implementation manner, the second offset is different from the first offset.

In an optional implementation manner, the first SI message list further includes a third SI message, and the first offset is further used to determine the starting position of the SI window of the third SI message.

In an optional implementation manner, the first SIB1 includes a first SI message list, a third SI message list, and a first positioning SI message list; the first offset is based on the third SI message The sum of the number of SI messages in the list is determined; or, the first offset is determined according to the sum of the number of SI messages in the third SI message list and the first positioning SI message list; or, the first offset is a predetermined amount. set value. Wherein, the third SI list may be schedulingInfoList. The first offset may be a numerical value, or may be an offset value based on an existing numerical value, for example, a time domain offset value based on an existing SI corresponding window.

In an optional implementation manner, the system frame number SFN and time slot number a where the starting position of the first SI window corresponding to the first SI message is located satisfy the following formula: SFN mod T=FLOOR(y/ N); a=y mod N; wherein, y=x+Δ×w, or y=x+Δ; x is determined according to the first SI scheduling information, Δ is the first offset, and w is the length of the first SI window; FLOOR() is a round-down operation, mod is a remainder operation, N is the number of time slots included in a radio frame, and T is the transmission period of the first SI message.

In an optional implementation manner, x=(n−1)×w, n is the sequence number of the first SI message in the first SI message list, and the SI in the first SI message list Messages are numbered from 1; or, x=n×w, where n is the sequence number of the first SI message in the first SI message list, and the SI messages in the first SI message list are numbered from 0.

In a third aspect, a communication device is provided, and the beneficial effects can be found in the description of the first aspect, which will not be repeated here. The apparatus may be the network device, a chip or a module in the network device, or a chip or a system on a chip, and the apparatus includes: a processing unit for determining the first offset; a transceiver unit, It is used to send the first system information block SIB1 to the terminal device, where the first SIB1 includes the first offset and the first SI scheduling information, and the first SI scheduling information is the SI message in the first SI message list. Scheduling information, the first SI message list includes the first system information SI message; the first offset and the first SI scheduling information are used to determine the starting position of the first SI window of the first SI message.

In an optional implementation manner, the first SI message is located in a first SI message list in the first SIB1, the first SI message list further includes a second SI message, the first SIB1 A second offset is also included, and the second offset is used to determine the starting position of the SI window of the second SI message.

In an optional implementation manner, the second offset is different from the first offset.

In an optional implementation manner, the first SI message list further includes a third SI message, and the first offset is further used to determine the starting position of the SI window of the third SI message.

In an optional implementation manner, the first SIB1 includes a first SI message list, a third SI message list, and a first positioning SI message list; the first offset is based on the third SI message The sum of the number of SI messages in the list is determined; or, the first offset is determined according to the sum of the number of SI messages in the third SI message list and the first positioning SI message list; or, the first offset is a predetermined amount. set value. Wherein, the third SI list may be schedulingInfoList. The first offset may be a numerical value, or may be an offset value based on an existing numerical value, for example, a time domain offset value based on an existing SI corresponding window.

In an optional implementation manner, the system frame number SFN and time slot number a where the starting position of the first SI window corresponding to the first SI message is located satisfy the following formula: SFN mod T=FLOOR(y/ N); a=y mod N; wherein, y=x+Δ×w, or y=x+Δ; x is determined according to the first SI scheduling information, Δ is the first offset, and w is the length of the first SI window; FLOOR() is a round-down operation, mod is a remainder operation, N is the number of time slots included in a radio frame, and T is the transmission period of the first SI message.

In an optional implementation manner, x=(n−1)×w, n is the sequence number of the first SI message in the first SI message list, and the SI in the first SI message list Messages are numbered from 1; or, x=n×w, where n is the sequence number of the first SI message in the first SI message list, and the SI messages in the first SI message list are numbered from 0.

A fourth aspect provides a communication device, and the beneficial effects can be found in the description of the second aspect, which will not be repeated here. The apparatus may be the terminal device, a chip or a module in the terminal device, or a chip or a system-on-chip, and the apparatus includes: a transceiver unit for receiving a first system information block from a network device SIB1, the first SIB1 includes a first offset and first SI scheduling information; the first SI scheduling information is the scheduling information of SI messages in the first SI message list, and the first SI message list includes the first System Information SI message;

a processing unit, configured to determine the starting position of the first SI window of the first SI message according to the first SI scheduling information and the first offset; The first SI message is received within an SI window.

In an optional implementation manner, the first SI message is located in a first SI message list in the first SIB1, the first SI message list further includes a second SI message, the first SIB1 A second offset is also included, and the second offset is used to determine the starting position of the SI window of the second SI message.

In an optional implementation manner, the second offset is different from the first offset.

In an optional implementation manner, the first SI message list further includes a third SI message, and the first offset is further used to determine the starting position of the SI window of the third SI message.

In an optional implementation manner, the first SIB1 includes a first SI message list, a third SI message list, and a first positioning SI message list; the first offset is based on the third SI message The sum of the number of SI messages in the list is determined; or, the first offset is determined according to the sum of the number of SI messages in the third SI message list and the first positioning SI message list; or, the first offset is a predetermined amount. set value. Wherein, the third SI list may be schedulingInfoList. The first offset may be a numerical value, or may be an offset value based on an existing numerical value, for example, a time domain offset value based on an existing SI corresponding window.

In an optional implementation manner, the system frame number SFN and the time slot number a where the starting position of the first SI window corresponding to the first SI message is located satisfy the following formula:

SFN mod T=FLOOR(y/N);

a=y mod N;

Wherein, y=x+Δ×w, or y=x+Δ; x is determined according to the first SI scheduling information, Δ is the first offset, and w is the length of the first SI window ; FLOOR() is a round-down operation, mod is a remainder operation, N is the number of time slots included in a radio frame, and T is the transmission period of the first SI message.

In an optional implementation manner, x=(n−1)×w, n is the sequence number of the first SI message in the first SI message list, and the SI in the first SI message list Messages are numbered from 1; or, x=n×w, where n is the sequence number of the first SI message in the first SI message list, and the SI messages in the first SI message list are numbered from 0.

In a fifth aspect, the present application provides a method for transmitting indication information, comprising: a network device determining a radio frame and a time slot where a start position of a first SI window of a first system information SI message is located; Sending location indication information, where the location indication information is used to indicate the system frame number SFN of the radio frame and the time slot number of the time slot.

In an optional implementation manner, the location indication information includes the SFN and the time slot number; or the location indication information is an integer value x, and the integer value x is used to determine the SFN and the time slot number. the time slot number.

In an optional implementation manner, the sending, by the network device, the location indication information to the terminal device includes: sending, by the network device, a system information block SIB1 including the location indication information to the terminal device.

In a sixth aspect, the present application provides a method for transmitting indication information, comprising: a terminal device receiving location indication information from a network device, where the location indication information is used to indicate a system frame number SFN corresponding to a first system information SI message and a timely slot number; the terminal device determines the start position of the first SI window of the first SI message, which is located in the time slot corresponding to the time slot number in the radio frame corresponding to the SFN; the terminal device is in The first SI message is received within the first SI window.

In an optional implementation manner, the location indication information includes the SFN and the time slot number; or the location indication information is an integer value x, and the integer value x is used to determine the SFN and the time slot number. the time slot number.

In an optional implementation manner, the location indication information is located in the system information block SIB1.

In a seventh aspect, an embodiment of the present application provides a computer-readable storage medium or a non-volatile storage medium, where an instruction or a program is stored in the computer-readable storage medium or the non-volatile storage medium, when the instruction or program When run on a computer, cause a computer to perform the methods described in the above aspects, or when the instructions or programs are run on one or more processors, cause a communication device including the one or more processors to perform the above aspects the method described.

In an eighth aspect, an embodiment of the present application provides a computer program product, where the computer program product is used to store a computer program, and when the computer program is run on a computer, the computer is made to execute as described in any one of the preceding aspects. Methods.

In a ninth aspect, an embodiment of the present application provides a chip or an apparatus for transmitting indication information, including: at least one processor, the at least one processor is coupled to a memory, the memory includes instructions, and the at least one processor runs The instructions cause the apparatus for transmitting a common signal to perform the method as referred to in the first aspect or the second aspect or the fifth aspect or the sixth aspect.

In a tenth aspect, there is provided a communication device, the communication device comprising one or more processors, and one or more memories or non-volatile storage media, in the one or more memories or non-volatile storage media Stored with instructions or programs, when the one or more processors execute the instructions or programs, the communication apparatus or the one or more processors are caused to perform the above aspects and the methods of the embodiments of the present application.

In an eleventh aspect, a terminal device or a communication device is provided, configured to perform the method involved in the second aspect or the sixth aspect.

A twelfth aspect provides a network device or a communication device configured to perform the method involved in the first aspect or the fifth aspect.

In a thirteenth aspect, an embodiment of the present application provides a system, where the system includes the device involved in the third aspect and the device involved in the fourth aspect.

Description of drawings

FIG. 1 is a schematic diagram of a network architecture applicable to an embodiment of the present application;

2 is a schematic flowchart of a method provided by an embodiment of the present application;

3 is a schematic diagram of the position of a SI window provided by an embodiment of the present application;

FIG. 4 is a schematic diagram of a position of an SI window provided by an embodiment of the present application;

FIG. 5 is a schematic diagram of a position of an SI window provided by an embodiment of the present application;

FIG. 6 is a schematic diagram of a position of an SI window provided by an embodiment of the present application;

FIG. 7 is a schematic diagram of a position of an SI window provided by an embodiment of the present application;

FIG. 8 is a schematic diagram of the position of an SI window provided by an embodiment of the present application;

FIG. 9 is a schematic diagram of a position of an SI window provided by an embodiment of the present application;

10 is a schematic flowchart of a method provided by an embodiment of the present application;

FIG. 11 is a schematic structural diagram of a communication device according to an embodiment of the present application;

FIG. 12 is a schematic structural diagram of a communication device according to an embodiment of the present application.

detailed description

The embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

The method provided in this application can be applied to various communication systems, for example, a long term evolution (LTE) system, a fifth generation (5G) communication system, or a hybrid LTE and 5G architecture, It can also be a 5G new radio (new radio, NR) system, and a new communication system that will appear in the future communication development.

For example, the method provided in this embodiment of the present application can be applied to the communication system shown in FIG. 1 , where a network device and three terminal devices (represented by UE1 to UE3 respectively) form a single-cell communication system, and UE1 to UE3 form a single-cell communication system. The uplink data can be sent to the network device separately or simultaneously, and the network device can send the downlink data to the UE1 to UE3 separately or simultaneously. It should be understood that FIG. 1 is only an exemplary illustration, and does not specifically limit the number of terminal devices included in the communication system, the number of network devices, and the number of cells covered by the network devices.

The terminal equipment involved in the embodiments of this application is an entity on the user side that is used to receive or transmit signals. A terminal device may be a device that provides voice and/or data connectivity to a user, eg, a handheld device with a wireless connection function, a vehicle-mounted device, and the like. The terminal device may also be other processing device connected to the wireless modem. Terminal devices can communicate with a radio access network (RAN). Terminal equipment may also be referred to as wireless terminal, subscriber unit, subscriber station, mobile station, mobile station, remote station, access point , remote terminal (remote terminal), access terminal (access terminal), user terminal (user terminal), user agent (user agent), user equipment (user device), or user equipment (user equipment, UE) and so on. Common terminal devices include, for example: mobile phones, tablet computers, notebook computers, PDAs, mobile internet devices (MIDs), wearable devices, such as smart watches, smart bracelets, pedometers, etc. The example is not limited to this.

The terminal device in this application may be a first-type terminal device or a second-type terminal device, and the first-type terminal device and the second-type terminal device may have at least one of the following distinguishing features:

1. Different bandwidth capabilities. Bandwidth capability can be expressed in terms of carrier bandwidth. For example, the carrier bandwidth of the first type terminal equipment is not greater than 50MHz, such as at least one of 50MHz, 40MHz, 20MHz, 15MHz, 10MHz or 5MHz, and the carrier bandwidth of the second type terminal equipment is greater than 50MHz.

2. The number of transceiver antennas is different. For example, the first type terminal device may support 2-receive and 1-transmit (2 receive antennas and 1 transmit antenna), or 1-receive and 1 transmit (1 receive antenna and 1 transmit antenna). The second type of terminal equipment can support 4 receive and 2 transmit (4 receive antennas and 2 transmit antennas). It can be understood that under the condition of realizing the same data transmission rate, since the number of transceiver antennas of the first type terminal equipment is less than the number of transceiver antennas of the second type terminal equipment, there is no difference between the first type terminal equipment and the base station. The maximum coverage that can be achieved by the data transmission of the second type is smaller than the maximum coverage that can be achieved by the data transmission between the second type of terminal equipment and the base station.

3. The uplink maximum transmit power is different. For example, the maximum uplink transmit power of the first type of terminal equipment may be a value between 4 decibel milliwatts (dBm) and 20 dBm. The maximum uplink transmit power of the second type of terminal equipment may be 23dBm or 26dBm.

4. The protocol version is different. The first type of terminal equipment may be a terminal equipment in NR release 17 (release-17, Rel-17) or a later version of NR Rel-17. The second type of terminal device may be, for example, a terminal device in NR release 15 (release-15, Rel-15) or NR release 16 (release-16, Rel-16). The second type of terminal equipment may also be referred to as NR legacy (NR legacy) terminal equipment.

5. Different carrier aggregation capabilities. For example, the first type of terminal equipment does not support carrier aggregation, and the second type of terminal equipment may support carrier aggregation. For another example, both the first type of terminal equipment and the second type of terminal equipment can support carrier aggregation, but the maximum number of carrier aggregations supported by the first type of terminal equipment at the same time is smaller than the maximum number of carrier aggregations simultaneously supported by the second type of terminal equipment. For example, the terminal equipment of the first type supports aggregation of 2 carriers at the same time, and the terminal equipment of the second type can support the aggregation of 5 carriers or 32 carriers at the same time.

6. Different duplex capabilities. For example, the first type of terminal equipment supports half-duplex frequency division duplexing (FDD). The second type of terminal equipment supports full duplex FDD.

7. The data processing time capability is different. For example, the minimum delay between receiving downlink data and sending feedback on the downlink data by the first type terminal equipment is greater than the minimum delay between receiving the downlink data and sending feedback on the downlink data by the second type terminal equipment; and/ Or, the minimum delay between sending uplink data and receiving feedback on the uplink data by the first type terminal equipment is greater than the minimum delay between sending uplink data and receiving feedback on the uplink data by the second type terminal equipment.

8. Different ability/capability. For example, the baseband processing capability of the terminal device of the first type is lower than the baseband processing capability of the terminal device of the second type. The baseband processing capability may include at least one of the following: the maximum number of MIMO layers supported by the terminal device during data transmission, the number of HARQ processes supported by the terminal device, and the maximum transmission block size (TBS) supported by the terminal device.

9. The upstream and/or downstream transmission peak rates are different. The peak transmission rate refers to the maximum data transmission rate that a terminal device can achieve in a unit time (eg, per second). The peak uplink rate supported by the terminal equipment of the first type may be lower than the peak uplink rate supported by the terminal equipment of the second type, and/or the peak downlink rate supported by the terminal equipment of the first type may be lower than the peak downlink rate supported by the terminal equipment of the second type . For example, the peak uplink rate of the first type of terminal equipment is less than or equal to 50Mbps, the peak downlink rate is less than or equal to 150Mbps, the peak uplink rate of the second type of terminal equipment is greater than or equal to 50Mbps, and the peak downlink rate is greater than or equal to 150Mbps. For another example, the peak uplink rate or downlink rate of the first type of terminal equipment is on the order of 100 Mbps, and the peak uplink rate or downlink peak rate of the second type of terminal equipment is on the order of Gbps.

10. The buffer size is different. The buffer can be understood as the total size of the layer 2 (Layer 2, L2) cache, which means that the number of bytes buffered in the radio link control (radio link control, RLC) transmission window and reception and reordering window of the terminal device for all radio bearers is equal to The sum of the number of bytes buffered in the packet data convergence protocol (PDCP) reordering window. Alternatively, buffer can also be understood as the total number of soft channel bits that can be used by HARQ processing.

Optionally, in this embodiment of the present application, the first type of terminal device may be a REDCAP terminal device in an NR system, or the first type of terminal device may also be referred to as a low-capacity terminal device, a reduced-capability terminal device, a REDCAP UE, a Reduced Capacity UE, mMTC UE, etc. The second type of terminal equipment may be legacy or normal or high-capability terminal equipment, and may also be referred to as legacy terminal equipment or normal terminal equipment. The second type of terminal equipment and the first type of terminal equipment have the above distinguishing characteristics.

The network device involved in the embodiments of the present application is an entity on the network side that is used to transmit or receive signals, and can be used to convert the received air frame and the network protocol (internet protocol, IP) packet to each other, as the A router between a terminal device and the rest of the access network, which may include an IP network and the like. The network device may also coordinate attribute management of the air interface. For example, the network device may be an evolved base station (evolutional Node B, eNB or e-NodeB) in LTE, or a new radio controller (NR controller), or a gNode B (gNB) in the 5G system. ), can be a centralized unit, can be a new wireless base station, can be a remote radio module, can be a micro base station, can be a relay, can be a distributed unit, It may be a reception point (transmission reception point, TRP) or a transmission point (transmission point, TP), or any other wireless access device, but the embodiment of the present application is not limited thereto. A network device can cover one or more cells.

In this embodiment of the present application, after completing the synchronization, the terminal device may obtain the MIB from the network device, and obtain the time-frequency position of the SIB1 according to the MIB. After obtaining the SIB1, the terminal device may determine the mapping (or bearer) relationship between other SIBs and the SI message, the transmission period of the SI message, the length of the SI window, and other information according to the SIB1.

Since the SI message is carried on the physical downlink shared channel (PDSCH) channel, the terminal device needs to determine the time-frequency position of the PDSCH where the SI message is located in the process of receiving the SI message. Specifically, in the current prior art, the terminal device may determine the starting position of the SI window of the SI message according to the received SIB1, and then determine the physical downlink control channel (PDCCH) in the SI window according to the SIB1. The timing and time-frequency information are monitored, and downlink control information (DCI) is obtained, thereby determining the time-frequency position of the PDSCH according to the DCI. The specific process for obtaining SI messages is as follows:

1. The terminal device determines the starting position of the SI window corresponding to the SI message.

2. Receive the SI message in the SI window, in which it can be determined by detecting the physical downlink control channel (PDCCH) whether it contains the system message wireless network temporary identity (SI-radio network temporary identity used to obtain the SI message) , SI-RNTI).

3. If the corresponding SI message is not received until the end of the current SI window, continue to try to receive in the next SI window.

4. If the SI message is received, follow-up actions are performed according to the SI message.

In the present application, a new method for determining the starting position of the SI window is proposed, which can be applied to the case where the SIB1 includes multiple SI message lists, which will be described in detail below.

The network architecture and service scenarios described in the embodiments of the present application are for the purpose of illustrating the technical solutions of the embodiments of the present application more clearly, and do not constitute a limitation on the technical solutions provided by the embodiments of the present application. The evolution of the architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

With reference to the foregoing description, as shown in FIG. 2 , a schematic flowchart of a communication method provided by an embodiment of the present application is shown. Referring to Figure 2, the method includes:

Step 201: The network device determines a first offset.

The first offset may be used to indicate the offset of the SI window of any SI message in the first SI message list; or, the first offset may be used to indicate the first SI message in the first SI message list The offset of the SI window.

Step 202: The network device sends the first offset and the first SI scheduling information to the terminal device.

The first SI scheduling information is the scheduling information of the SI messages in the first SI message list, and the first SI message list includes the first SI messages.

The first offset and the first SI scheduling information are used to determine the starting position of the first SI window of the first SI message.

It should be noted that the first offset and the first SI scheduling information may be carried through the first SIB1, or the first offset may be predefined and not carried through the SIB1, and the first SI scheduling information may be located in The si-SchedulingInfo field in the first SIB1.

Step 203: The terminal device receives the first offset and the first SI scheduling information from the network device.

Step 204: The terminal device determines the starting position of the first SI window of the first SI message according to the first SI scheduling information and the first offset.

Step 205: The terminal device receives the first SI message within the first SI window.

In this embodiment of the present application, the terminal device shown in FIG. 2 may be a first-type terminal device or a second-type terminal device, which will be described below according to different situations.

Example 1:

In the first embodiment, description is made by taking the example that the network device can send system messages for the first type terminal device and the second type terminal device at the same time. Among them, the SI message carrying the OSI and posSIB required by the first type terminal equipment, the corresponding related scheduling information can be carried through the first SIB1; the SI message carrying the OSI and posSIB required by the second type terminal equipment, the corresponding related scheduling information Information can be carried through the second SIB1. That is, the first type terminal device can determine the SI message carrying the OSI and the posSIB according to the first SIB1, and the second type terminal device can determine the SI message carrying the OSI and the posSIB according to the second SIB1.

In the first embodiment, it is assumed that the first SI message list of the first SIB1 includes at least one SI message, and the second SI message list of the second SIB1 includes at least one SI message. The same SI message may exist in the first SI message list and the second SI message list, and the SI message is an SI message jointly received by the first type terminal device and the second type terminal device, and may be referred to as a common (common) SI message; Different SI messages may also exist in the first SI message list and the second SI message list, and these SI messages may be referred to as specific (specific) SI messages.

In the first embodiment, the network device may determine an offset for each SI message in the first SI message list. Assuming that the first SI message list includes the first SI message and the second SI message, the first SIB1 may include a first offset and a second offset, and the first offset may be used to determine the first SI message list In the starting position of the SI window of the first SI message, the second offset is used to determine the starting position of the SI window of the second SI message. How to determine the offset for different SI messages is described separately below.

Implementation mode 1, the first SI message is located in the first SI message list in the first SIB1, and the first SI is located in the second SI message list in the second SIB1, that is, the first SI message is a public SI message, the first offset may be determined according to the sequence number corresponding to the first SI message in the first SI message list and the sequence number corresponding to the first SI message in the second SI message list . The sequence number here refers to the number of SI messages of the first SI message in the first SI message list or the number of rows in which the first SI message appears in the first SI message list.

For example, the sequence number corresponding to the first SI message in the first SI message list is n1, and the corresponding sequence number in the second SI message list is n2, then the first offset Δ may be: Δ=n2− n1, or Δ=(n2−n1)×w, where w is the length of the first SI window. Optionally, the window lengths corresponding to each SI in the first SI message list are the same, and when the window lengths corresponding to each SI are different, the offset is the difference between the sequence numbers of the two SIs, or the middle of the two SIs. The sum of the lengths of the different SIs.

It should be noted that the above is just an example, and other methods can also be used to determine the first offset. It is only necessary to ensure that the first SI window of the first SI message determined according to the first offset is partially or completely the same as the second SI window. overlapping. That is, it is necessary to ensure that the positions of the common SI messages common to the two types of terminal devices are as consistent as possible in the time domain, and the SI windows of the common SI messages determined according to different SIB1s are aligned as much as possible. The second SI window is a window determined by the second type of terminal device according to the second SIB1 for the first SI message.

Since the first SI window and the second SI window partially or completely overlap, the network device can avoid repeatedly sending the first SI message, and the first type terminal device and the second type terminal device can receive the first SI at the same time, improving resource utilization. .

Implementation mode 2, the first SI message is located in the first SI message list in the first SIB1, and the first SI message is not located in the second SI message list in the second SIB1, that is, the first SI message is The first type of terminal device specific SI messages. At this time, the first offset is determined according to the number of SI messages included in the second SI message list.

For example, the sequence number corresponding to the first SI message in the first SI message list is n1, and the second SI message list includes n3 SI messages, then the first offset Δ may be: Δ=n3−n1+1 , or Δ=(n3−n1+1)×w, where w is the length of the first SI window.

It should be noted that the above is just an example, and other methods can also be used to determine the first offset. It only needs to ensure that the first SI window of the first SI message determined according to the first offset is located at the end position of the third window, Or after the end of the third window. The third SI window is the window corresponding to the SI message with the largest sequence number in the second SI message list.

Since the first SI window is located after the third SI window, the SI windows of different SI messages can be prevented from overlapping, that is, the SI window corresponding to the unique SI of the first terminal device is guaranteed to be orthogonal to the SI windows of other SI messages, thereby avoiding different SI windows. The interference caused by the SI messages being sent in the same time period improves the system efficiency.

Correspondingly, on the terminal device side, the terminal device determines the sequence number n of the first SI message in the list through the first SI message list;

Secondly, the length of the first SI window is w, and assuming that the SI messages in the first SI message list are numbered from 1, the integer value x=(n−1)×w is obtained;

Again, from the first offset Δ, and x, y is obtained, where y=x+Δ×w, or y=x+Δ.

Finally, the system frame number (system frame number, SFN) and time slot number a where the starting position of the first SI window corresponding to the first SI message is located can satisfy the following formula:

SFN mod T=FLOOR(y/N)...(1);

a=y mod N...(2);

Wherein, FLOOR( ) is a round-down operation, mod is a remainder operation, N is the number of time slots included in a radio frame, and T is the transmission period of the first SI. So far, the terminal device can determine the specific position of the first SI window according to the first offset and the period, window length and other information in the first SI scheduling information, can receive the first SI at the time domain position of the SI window response, and obtain The SIB corresponding to the first SI.

It should be noted that, in the above formula, it is assumed that the SI messages in the first SI message list are numbered from 0, then x=n×w.

Further, in the above formula, when applied to the LTE system, the value of N may be 10, and a may represent the subframe number.

Specifically, assuming that the terminal device is the first type of terminal device, the list of the first SI messages to be received includes SI message 2 and SI message 4; the list of second SI messages to be received by the second type of terminal device includes the received SI message 1 , SI message 2 and SI message 3. The transmission periods of the SI message 1 and the SI message 2 are both T, and the transmission periods of the SI message 3 and the SI message 4 are both 2T. The lengths of the SI windows corresponding to the SI message 1 to the SI message 4 are all the same, and they are all w. If the prior art method is used, the positional relationship of the SI windows corresponding to the SI message 1 to the SI message 4 may be as shown in FIG. 3 .

In Figure 3, SI 1 represents the SI window corresponding to SI message 1, SI 2 represents the SI window corresponding to SI message 2, SI 3 represents the SI window corresponding to SI message 3, and SI 4 represents the SI window corresponding to SI message 4.

In combination with the above example, according to the method provided by the embodiment of the present application, the network device may respectively determine an offset for the SI message 2 and the SI message 4 that the first type terminal device needs to receive.

Specifically, the sequence number corresponding to the SI message 2 in the first SI message list is 1, and the sequence number corresponding to the second SI message list is 2, then the offset Δ1 corresponding to the SI message 2 may be: Δ1=2 -1=1.

The sequence number corresponding to SI message 4 in the first SI message list is 2, and the number of SI messages included in the second SI message list is 3, then the offset Δ2 corresponding to SI message 4 may be: Δ2=3–2+ 1=2.

Correspondingly, on the terminal device side, for the SI message 2, the terminal device determines that the sequence number of the SI message 2 in the list is n=1 through the first SI message list;

Second, based on the first SI window length w, an integer value x=(n−1)×w=0 is obtained;

Again, according to the offset Δ1=1 and x corresponding to the SI message 2, y=x+Δ1×w=w is determined.

Finally, according to the previous formulas (1) and (2), the frame number SFN and the time slot number a where the starting position of the SI window corresponding to the SI message 2 is located can be determined.

For the SI message 4, the terminal device can determine the frame number SFN and the time slot number a where the start position of the SI window corresponding to the SI message 4 is located in the same manner.

Through the above method, the positional relationship of the SI window corresponding to each SI message is finally determined as shown in Figure 4. Compared with the original position in Figure 3, the SI window corresponding to SI message 2 is shifted by 1 window length w, It overlaps with the SI window corresponding to the SI message in the second SI message list; and the SI window corresponding to the SI message 4, which is a unique SI, is offset by 2 SI window lengths to ensure orthogonality with other SI messages.

In the previous example, the case where all the lengths of the SI windows are the same is described, and the method provided by the present application can also be applied to the case where the lengths of the SI windows of different SIs are different. In this case, the first offset may be in a time slot, and when the first SI message is a common SI message, the first offset is determined based on ensuring the first SI window of the first SI message, and The second SI window of the first SI message partially overlaps, and the second SI window is a window determined for the first SI message according to the second SIB1.

The partial overlap of the first SI window and the second SI window may include but is not limited to the following situations: the center position of the first SI window is the same as the center position of the second SI window; the start of the first SI window The position is the same as the start position of the second SI window; the end position of the first SI window is the same as the end position of the second SI window.

In combination with the above example, it is assumed that in the first SI message list, the length of the SI window of each SI message is 7 time slots; in the second SI message list, the length of the SI window of each SI message is 5 time slots. The network device can set the offset of the SI message 2 to 4 time slots, so that the SI window determined according to the first SIB1 and the offset is aligned with the center position of the SI window determined according to the second SIB1; the network device can The offset of SI message 4 is set to 7 time slots, so that the start position of the SI window corresponding to SI message 4 is located at the end start position of the SI window corresponding to SI message 3, as shown in FIG. 5 for details.

Embodiment 2:

The methods provided in the embodiments of the present application can also be applied to the LTE system. Specifically, in the LTE system, the system information includes a master information block (master information block, MIB), multiple system information blocks (system information blocks, SIB) and multiple positioning system information blocks (posSIB). SIBs include SIB1 and other SIBs. There are many types of other SIBs (in the subsequent introduction, unless otherwise specified, the mentioned SIBs refer to other SIBs other than SIB1).

In the LTE system, other SIB types include: sibType3, sibType4, sibType3, sibType4, sibType5, sibType6, sibType7, sibType8, sibType9, sibType10, sibType11, sibType12-v920, sibType13-v920, sibType14-v1130, sibType15-v1130, sibType16 -v1130,sibType17-v1250,sibType18-v1250; and subsequent extended SIB types sibType19-v1250,sibType20-v1310,sibType21-v1430,sibType24-v1530,sibType25-v1530,sibType26-v1530,sibType27-v16xy,sibType28. Other SIBs are sent through system information messages (SI messages), and each system information message may include multiple SIBs.

SIB1 includes a scheduling information list (schedulingInfoList) of the system information message, and the scheduling information list includes rows from 1 to (maxSI-Message), which respectively indicate the scheduling information (SchedulingInfo) corresponding to 1 to (maxSI-Message) system information messages, wherein maxSI-Message is the maximum number of system information messages (SI messages) allowed to be broadcast by the system. The number of SI messages can be determined according to the currently provided service.

It should be noted that the scheduling information list corresponds to an SI message list. The scheduling information list includes scheduling information of at least one SI message, and then an SI message list can be obtained according to each information element in the scheduling information list.

The scheduling information (SchedulingInfo) includes the system information message period (si-Periodicity) and SIB mapping information (sib-MappingInfo). The SIB mapping information indicates which SIBs are included in the SI message by means of a bit string. Each system information message will be sent in a system information window (system information window, SI window), and the terminal device first determines the position of the SI window corresponding to an SI message, and then receives the SI message in the SI window.

The terminal device can determine the time domain starting position of the SI window corresponding to the SI message according to the following formula:

First determine x=(n-1)*w;

Then determine the subframe number a where the SI window is located, where a=x mod 10;

It can also determine the system frame number SFN where the SI window is located, where SFN mod T=FLOOR(x/10);

a and SFN are the subframe number and frame number of the time domain start position of the SI window, n is the nth row of the schedulingInfoList, corresponding to the nth system information message in the schedulingInfoList; w is the length of the SI window (Length), the system The time domain length of the information window; T is the transmission period of the system information message carried in the si-Periodicity.

In addition, the posSIB is also sent through the SI message, and SIB1 also indicates the scheduling information (pos-schedulingInfoList) for sending the SI message of the posSIB. The SI message for sending the posSIB is also sent in an SI window. The method for determining the position of the SI window is as follows Two kinds:

The first:

x=(n-1)*w;

a = x mod 10;

SFN mod T=FLOOR(x/10);

a and SFN are the subframe number and frame number of the time domain start position of the SI window. n is the ordering of this SI message in schedulingInfoList and pos-schedulingInfoList; w is the SI window Length, the time domain length of the system information window; T is the si-Periodicity period of the SI message.

The second:

x=m*w+(n–1)*w;

a = x mod 10;

SFN mod T=FLOOR(x/10);

a and SFN are the subframe number and frame number of the time domain start position of the SI window. n is the ordering of this SI message in pos-schedulingInfoList; m is the number of SI messages with a period of 80ms in the schedulingInfoList, T is the si-Periodicity period of the SI message, w is the length of the SI window, and the time domain length of the system information window ; T is the transmission period of the SI message carried in the si-Periodicity.

In the current technology, an SI message can include sibType3, sibType4, sibType3, sibType4, sibType5, sibType6, sibType7, sibType8, sibType9, sibType10, sibType11, sibType12-v920, sibType13-v920, sibType14-v1130, sibType15-v1130, sibType16-v1130, sibType17-v1250, sibType18-v1250 and other non-extended SIBs can also include sibType19-v1250, sibType20-v1310, sibType21-v1430, sibType24-v1530, sibType25-v1530, sibType26-v1530, sibType27-v16 V16xy and other extended SIBs, but some terminal equipments produced by some manufacturers, due to technical problems, when an SI message includes the extended SIB type, the interpretation is wrong, and the extended SIB type cannot be read, and the corresponding cell is regarded as prohibited access. These terminal devices cannot get network services.

A feasible solution is to send the extended SIB type through a special SI message, and configure a new scheduling information list for these SI messages. The type of SIB that can be carried in each SI message in the scheduling information list is only Including sibType19-v1250, sibType20-v1310, sibType21-v1430, sibType24-v1530, sibType25-v1530, sibType26-v1530, sibType27-v16xy, sibType28-v16xy and other extended SIBs. In the original scheduling information list of SIB1, each SI message can only carry SIB types including sibType3, sibType4, sibType3, sibType4, sibType5, sibType6, sibType7, sibType8, sibType9, sibType10, sibType11, sibType12-v920, sibType13-v920 , sibType14-v1130, sibType15-v1130, sibType16-v1130, sibType17-v1250, sibType18-v1250 and other non-extended SIB types. After a new scheduling information list is introduced, how to determine the position of the SI window corresponding to the SI message in the list is an urgent problem to be solved.

One solution is to place the SI window carried in the extended SIB type SI message after the positioning SI message. At this time, if the terminal device wants to read the system information carried in the extended SIB type, it needs to read the scheduling information of the positioning SI first. However, the positioning SIB was introduced into 3GPP as an optional function in Release 15. For terminal devices that do not support the positioning function, they do not need to read or cannot recognize the positioning SIB, and such terminal devices will not read the subsequent extended SIB types. system information, the system information of the SIB type carried in the subsequent extension will be ignored by the terminal device. At this time, the terminal device cannot obtain all system information.

Another solution is to schedule the system information of the SIB type carried in the subsequent extension before positioning the SIB. However, for legacy terminal devices using Release 15, the legacy terminal device considers the system information in the newly added scheduling information list to be the positioning SIB, so the terminal device cannot correctly identify the system information carried in the extended SIB type, and cannot obtain it. The content of the system information.

The above solutions are not backward compatible. Therefore, the second embodiment provides a solution with backward compatibility to solve the problem that some terminal devices cannot identify the system information carried in the extended SIB type.

In the second embodiment, the first SIB1 sent by the network device may include, in addition to the first SI scheduling information, third SI scheduling information, and first positioning SI message scheduling information and the like.

The first SI scheduling information is the scheduling information of the SI messages in the first SI message list, including the SI message period of the first SI message, and the order of the SI messages including the first SI message in the first SI message list. The third SI scheduling information is the scheduling information of the SI messages in the third SI message list, including the SI message period and the sequence of each SI message in the first SI message list. The first positioning SI scheduling information is the scheduling information of the SI messages in the first positioning SI message list.

The types of SIBs that can be carried in each SI message in the first SI message list include sibType19-v1250, sibType20-v1310, sibType21-v1430, sibType24-v1530, sibType25-v1530, sibType26-v1530, and sibType27-v16xy , sibType28-v16xy and other extended SIBs.

The types of SIBs that can be carried in each SI message in the third SI message list include sibType3, sibType4, sibType3, sibType4, sibType5, sibType6, sibType7, sibType8, sibType9, sibType10, sibType11, sibType12-v920, sibType13-v920, sibType14- Non-extended SIB types such as v1130, sibType15-v1130, sibType16-v1130, sibType17-v1250, sibType18-v1250.

The type of SIB that can be carried in each SI message in the first positioning SI message list is a positioning SIB. The first positioning SI message list includes several SI messages, and the SI messages can be used with functions related to positioning.

In the second embodiment, the network device may determine the same offset for the SI messages in the first SI message list. Assuming that the first SI message list further includes a third SI message, the first offset may also be used to determine the starting position of the SI window of the third SI message.

The third SI message is information in the third SI message list, and corresponds to the third SI scheduling information. That is to say, the third SI scheduling information is the scheduling information of the SI messages in the third SI message list.

The first offset is used to determine the starting position of the SI window of the third SI message. The network device determines the first offset according to the third SI scheduling information or according to the third SI scheduling information and the first positioning SI scheduling information.

In a possible implementation manner, the first offset is determined according to the sum of the number of SI messages in the third SI message list.

The first offset is determined according to the sum of the number of SI messages in the third SI message list. It can be understood that when the network does not configure the first positioning SI message list, the SI messages in the first SI message list are in the third SI message list. Sent after the SI message in the SI message list.

For example, the first offset is the sum of the number of SI messages in the third SI message list. In this implementation method, the start positions of the SI windows of all SI messages included in the first SI message list are behind the start positions of the SI windows of the SI messages in the third SI message list. As shown in Figure 6, wherein the third SI message list includes 3 SI messages in sequence, namely SI 1, SI 2 and SI 3, wherein the period of SI 1 and SI 2 is 80ms, and the period of SI3 is 160ms. The SI message included in the first SI message list is SI 4, and the period is 80ms. When the first offset is the sum of the number of SI messages in the third SI message list, the terminal device can directly determine according to the first offset. The starting position of the SI window of the SI message in the first SI message list.

In a possible implementation manner, the first offset is determined according to the sum of the third SI message list and the number of SI messages in the first positioning SI message list. For example, when the third SI message list includes 5 SIs and the first positioning SI message list includes 3 SIs, the first SI list may be arranged after the third SI list, and the first SI message list summarizes the first SI The sequence index index of the SI message corresponding to the message may be 9, and the SI windows corresponding to the SI messages in the first SI message list are sequentially arranged from the SI window whose index is 9 to the back.

The first offset is determined according to the sum of the third SI message list and the number of SI messages in the first positioning SI message list. It can be understood that when the network configures the first positioning SI message list, the first SI message list The middle SI message is sent after the SI message in the first positioning SI message list, and the SI message in the first positioning SI message list is sent after the SI message in the third SI message list.

For example, the first offset is the sum of the number of SI messages in the third SI message list and the first positioned SI message list. In this implementation method, the starting positions of the SI windows of all the SI messages included in the first SI message list are the starting positions of the SI messages in the third SI message list and the SI windows of the SI messages in the first positioning SI message list. behind the starting position. As shown in Figure 7, wherein the third SI message list includes 3 SI messages in sequence, namely SI 1, SI 2 and SI 3, wherein the period of SI 1 and SI 2 is 80ms, and the period of SI 3 is 160ms. The first positioning SI message list includes two posSI messages in sequence, namely posSI 1 and pos SI 2, their period is 80ms, the SI message included in the first SI message list is SI 4, and the period is 80ms. An offset is the sum of the number of SI messages in the third SI message list and the first positioning SI message list, which is convenient for the terminal device to directly calculate the starting position of the SI window of the SI messages in the first SI message list.

In a possible implementation manner, the first offset is a preset value, which may also be a preset value configured by the network. In this case, when determining the starting position of the SI window of the SI message in the first SI message list, the terminal device may directly use the preset value for calculation.

Optionally, the first offset has nothing to do with the number of SI messages in the third SI message list and the number of SI messages in the first positioning SI message list, so that the location of the SI messages in the first SI message list can be conveniently and flexibly determined.

In combination with the foregoing description, the terminal device can determine the starting position of the SI window of the first SI message according to the following methods:

1. Calculate y=index*w+x=index*w+(n-1)*w;

2. Calculate a=y mod 10;

3. Calculate SFN mod T=FLOOR(y/10);

Wherein, a and SFN are the subframe number and frame number of the time domain start position of the SI window corresponding to the first SI message. index is the first offset.

n is the sequence of the first SI message in the first SI message list; w is the length of the SI window; T is the transmission period of the first SI message.

It should be noted that the above formula is applicable to the numbering of n starting from 1. If n is numbered from 0, the terminal device can determine the starting position of the SI window of the first SI message in the following manner:

1. Calculate y=index*w+x=index*w+n*w;

2. Calculate a=y mod 10;

3. Calculate SFN mod T=FLOOR(y/10);

Wherein, a and SFN are the subframe number and frame number of the time domain start position of the SI window corresponding to the first SI message. index is the first offset.

n is the sequence of the first SI message in the first SI message list (it can be considered as the sequence number of the first SI message); w is the length of the SI window; T is the transmission period of the first SI message.

Optionally, a possible implementation method is that the first offset is the sum of the number of SI messages in the third SI message list and the first positioning SI message list and the sequence of the first SI message in the first SI message list. In the case where the first positioning SI message list does not exist, the first offset is the sum of the order of the third SI message list and the first SI message in the first SI message list.

When there is a first positioning SI message list, the method for the terminal device to determine the starting position of the SI window of the first SI message may further include:

1. Calculate y=(index-1)*w;

2. Calculate a=y mod 10;

3. Calculate SFN mod T=FLOOR(y/10);

In the above formula, index=m+j+n is the first offset.

Wherein, a and SFN are the subframe number and frame number of the time domain start position of the SI window corresponding to the first SI message. index is the first offset. n is the order of the first SI messages in the first SI message list, m is the number of SI messages in the third SI message list, and j is the number of SI messages included in the first positioning SI message list.

If the network device is not configured with the first positioning SI message list, the existence of the parameter j need not be considered in the above formula.

The above formula works for n numbered from 1. If n is numbered from 0, the method for the terminal device to determine the starting position of the SI window of the first SI message is as follows:

1. Calculate y=index*w;

2. Calculate a=y mod 10;

3. Calculate SFN mod T=FLOOR(y/10);

In the above formula 1, index=m+j+n.

Wherein, a and SFN are the subframe number and frame number of the time domain start position of the SI window corresponding to the first SI message. index is the first offset. n is the sequence number of the first SI message in the first SI message list, m is the number of SI messages in the third SI message list, and j is the number of SI messages included in the first positioning SI message list.

If the network device is not configured with the first positioning SI message list, the existence of the parameter j does not need to be considered in the above formula, that is, j=0.

Embodiment three:

In the third embodiment, description is given by taking an example that the network device can send system messages for the first type terminal device and the second type terminal device at the same time. Among them, the SI message carrying the OSI and posSIB required by the first type terminal equipment, the corresponding related scheduling information can be carried through the first SIB1; the SI message carrying the OSI and posSIB required by the second type terminal equipment, the corresponding related scheduling information Information can be carried through the second SIB1. That is to say, the terminal device of the first type can determine the first SI message carrying the OSI and the first positioning SI message carrying the posSIB according to the first SIB1, and the terminal device of the second type can determine the second SI message carrying the OSI according to the second SIB1 and the second positioning SI message carrying the posSIB.

In the third embodiment, it is assumed that the first SI message list of the first SIB1 includes at least one SI message, the first positioning SI message list of the first SIB1 includes at least one positioning SI message; the second SI message list of the second SIB1 includes at least one positioning SI message; At least one SI message is included, and the second positioning SI message list of the second SIB1 includes at least one positioning SI message. The same positioning SI message may exist in the first positioning SI message list and the second positioning SI message list, and the positioning SI message is a positioning SI message received by the first type terminal device and the second type terminal device, and may be referred to as a common ( common) positioning SI message; different positioning SI messages may also exist in the first positioning SI message list and the second positioning SI message list, and these positioning SI messages may be referred to as specific (specific) positioning SI messages.

In the third embodiment, the network device may determine an offset for each positioning SI message in the first positioning SI message list. Assuming that the first positioning SI message list includes a first positioning SI message and a second positioning SI message, the first SIB1 may include a first offset and a second offset, and the first offset may be used to determine the first The offset of the positioning SI window of the first positioning SI message in the positioning SI message list, and the second offset is used to determine the starting position of the positioning SI window of the second positioning SI message. The following describes how to determine offsets for different positioning SI messages when both offsetToSI-Used in the first SIB1 and the second SIB1 have been configured.

Implementation mode 1, the first positioning SI message is located in the first positioning SI message list in the first SIB1, and the first positioning SI is located in the second positioning SI message list in the second SIB1, that is, the first positioning The SI message is a public positioning SI message, and the first offset may be a sequence number corresponding to the first positioning SI message in the first positioning SI message list according to the first positioning SI message, and the first positioning SI message is in the second positioning The corresponding sequence number in the SI message list is determined.

For example, the total number of all SI messages with a period of 80ms in the first SI message list is m1, and the total number of all SI messages with a period of 80ms in the second SI message list is m2, then the first offset Δ can be: Δ= m2−m1, or Δ=(m2−m1)×w, where w is the length of the first positioning SI window.

It should be noted that the above is just an example, and other methods can also be used to determine the first offset. It is only necessary to ensure that the first positioning SI window of the first positioning SI message determined according to the first offset is different from the second positioning SI window. Some or all of them overlap. The second positioning SI window is a window determined according to the second SIB1 for the first positioning SI message.

Because the first positioning SI window and the second positioning SI window partially or completely overlap, the network device can avoid repeatedly sending the first positioning SI multiple times, and the first type terminal device and the second type terminal device can receive the first positioning SI at the same time. resource utilization.

Implementation mode 2, the first positioning SI message is located in the first positioning SI message list in the first SIB1, and the first positioning SI message is not located in the second positioning SI message list in the second SIB1, that is, the first positioning SI message is not located in the second positioning SI message list in the second SIB1. A positioning SI message is a unique positioning SI message. At this time, the first offset is determined according to the number of positioning SI messages included in the second positioning SI message list.

For example, the sum of the total number of SI messages with a period of 80ms in the second SI message list and the total number of positioning SI messages in the second positioning SI message list is m3, then the first offset Δ may be: Δ=m3, or Δ =m3×w, w is the length of the first positioning SI window.

It should be noted that the above is just an example, and other methods can also be used to determine the first offset. It only needs to ensure that the first positioning SI window of the first positioning SI message determined according to the first offset is located at the end of the third window. position, or after the end position of the third window. The third positioning SI window is the window corresponding to the positioning SI message with the largest sequence number in the second positioning SI message list.

Since the first positioning SI window is located after the third positioning SI window, overlapping positioning SI windows of different positioning SI messages can be avoided, thereby avoiding interference caused by different positioning SI messages being sent in the same time period, and improving system efficiency.

Correspondingly, on the terminal device side, the terminal device determines, through the first positioning SI message list, the sequence number n of the first positioning SI message in the list, and the number m of SI messages with a period of 80ms in the first SI message list;

Next, the length of the first positioning SI window is w, and assuming that the positioning SI messages in the first positioning SI message list are numbered from 1, an integer value x=m×w+(n−1)×w is obtained.

Again, from the first offset Δ, and x, y is obtained, where y=x+Δ×w, or y=x+Δ.

Finally, the system frame number SFN and the time slot number a where the starting position of the first positioning SI window corresponding to the first positioning SI message is located can satisfy the following formula:

SFN mod T=FLOOR(y/N)...(3);

a=y mod N...(4);

Wherein, FLOOR( ) is a round-down operation, mod is a remainder operation, N is the number of time slots included in a radio frame, and T is the transmission period of the first positioning SI.

It should be noted that, in the above formula, it is assumed that the positioning SI messages in the first positioning SI message list are numbered from 0, then x=n×w.

Specifically, assuming that the terminal device is the first type of terminal device, the first SI message list to be received includes SI message 4 with a period of 80ms, and the first positioning SI message list to be received includes positioning SI message 2; the second type The list of second SI messages to be received by the terminal device includes SI message 1 and SI message 3 with a period of 80 ms, and the list of second positioning SI messages to be received includes positioning SI message 2. The lengths of the SI windows corresponding to the SI message 1 to the SI message 4 are all the same, and they are all w. If the prior art method is used, the positional relationship of the SI windows corresponding to the SI message 1 to the SI message 4 may be as shown in FIG. 8 . In Figure 8, SI 1 represents the SI window corresponding to SI message 1, SI 2 represents the SI window corresponding to SI message 2, SI 3 represents the SI window corresponding to SI message 3, and SI 4 represents the SI window corresponding to SI message 4.

In combination with the above example, according to the method provided by the embodiment of the present application, the network device may determine an offset for the positioning SI message 2 that needs to be received by the terminal device of the first type.

Specifically, the total number of all SI messages with a period of 80ms in the first SI message list is 1, and the total number of all SI messages with a period of 80ms in the second SI message list is 2, then the offset Δ corresponding to SI message 2 can be: Δ=2−1=1.

Correspondingly, on the side of the terminal device, for positioning the SI message 2, the terminal device determines that the sequence number of the SI message 2 in the list is n=1 through the first positioning SI message list, and all periods in the first SI message list are The total number of SI messages of 80ms, determine m=1;

Secondly, based on the first positioning SI window length w, an integer value x=m×w+(n−1)×w=w is obtained;

Thirdly, according to the offset Δ=1 and x corresponding to the positioning SI message 2, y=x+Δ×w=2w is determined.

Finally, according to the preceding formulas (3) and (4), the frame number SFN and the time slot number a where the starting position of the positioning SI window corresponding to the positioning SI message 2 is located can be determined.

Through the above method, the positional relationship of the positioning SI window corresponding to each positioning SI message is finally determined as shown in FIG. 9 . Compared with the original position in FIG. 8 , the positioning SI window corresponding to the positioning SI message 2 is shifted. 1 window length w, overlapping with the SI window corresponding to the positioning SI message in the second positioning SI message list.

In the previous embodiment, the network device indirectly indicates the starting position of the SI window of the first SI message through information such as the first offset. The time slot and radio frame where the starting position of the SI window is located.

Embodiment 4:

FIG. 10 is a schematic flowchart of a method according to an embodiment of the present application. Referring to Figure 10, the method includes:

Step 1001: The network device determines the radio frame and the time slot where the start position of the first SI window of the first SI message is located.

It should be noted that, for how the network device specifically determines the radio frame and the time slot where the starting position of the first SI window is located, reference may be made to the descriptions in the previous embodiments, which will not be repeated here.

Step 1002: The network device sends location indication information to the terminal device.

The location indication information is used to indicate the SFN of the radio frame and the time slot number of the time slot.

For example, the network device may send the location indication information to the terminal device through SIB1.

The network device sends the first offset and the first SI scheduling information to the terminal device, where the first SI scheduling information is the scheduling information of the SI messages in the first SI message list, and the first SI message list includes the first SI message.

In a possible implementation manner, the location indication information includes the SFN and the time slot number.

In another possible implementation manner, the position indication information is an integer value x, the integer value x is used to determine the SFN and the time slot number, and the integer value x is the starting position of the first SI window The system frame number SFN and time slot number a of the system where it is located can satisfy the following formula:

SFN mod T=FLOOR(x/N)...(5);

a=x mod N...(6);

Step 1003: The terminal device receives the location indication information from the network device.

Step 1004: The terminal device determines the start position of the first SI window of the first SI message, which is located in the time slot corresponding to the time slot number in the radio frame corresponding to the SFN.

Step 1005: The terminal device receives the first SI message within the first SI window.

Through the above method, it can be ensured that the starting position of the first SI window of the first SI message is indicated to the terminal device under any window length. Compared with the method for indicating the starting position of the SI window in the prior art, it can be more flexible. Indicates the starting position of the first SI window.

The various embodiments described herein may be independent solutions, or may be combined according to internal logic, and these solutions all fall within the protection scope of the present application.

It can be understood that, in the above method embodiments, the methods and operations implemented by the terminal device can also be implemented by components (such as chips or circuits) that can be used in the terminal device, and the methods and operations implemented by the network device can also be implemented by A component (eg, chip or circuit) implementation that can be used in a network device.

In the above embodiments provided by the present application, the methods provided by the embodiments of the present application are respectively introduced from the perspective of interaction between various devices. In order to implement the functions in the methods provided by the above embodiments of the present application, the terminal device and the network device may include hardware structures and/or software modules, and the above functions are implemented in the form of hardware structures, software modules, or hardware structures plus software modules. . A certain function in the above-mentioned functions is implemented in the form of a hardware structure, a software module, or a hardware structure plus a software module, depending on the specific application and design constraints of the technical solution.

The division of modules in the embodiments of the present application is schematic, and is only a logical function division, and there may be other division manners in actual implementation. In addition, each functional module in each embodiment of the present application may be integrated into one processor, or may exist physically alone, or two or more modules may be integrated into one module. The above-mentioned integrated modules can be implemented in the form of hardware, and can also be implemented in the form of software function modules.

Similar to the above concept, as shown in FIG. 11 , an embodiment of the present application further provides an apparatus 1100 for implementing the functions of the terminal device or the network device in the above method. For example, the apparatus may be a software module or a system-on-chip. In this embodiment of the present application, the chip system may be composed of chips, or may include chips and other discrete devices. The apparatus 1100 may include: a processing unit 1101 and a transceiver unit 1102 .

In the embodiments of the present application, the transceiver unit may also be referred to as a transceiver module or a communication module, and may include a sending module and/or a receiving module, respectively configured to perform the sending and receiving steps of the terminal device or the network device in the above method embodiments.

Hereinafter, the communication apparatus provided by the embodiments of the present application will be described in detail with reference to FIG. 11 to FIG. 12 . It should be understood that the description of the apparatus embodiment corresponds to the description of the method embodiment. Therefore, for the content not described in detail, reference may be made to the above method embodiment, which is not repeated here for brevity.

In a possible design, the apparatus 1100 may implement steps or processes corresponding to those performed by the terminal device or the network device in the above method embodiments, which will be described separately below.

Exemplarily, when the apparatus 1100 implements the function of the network device in the process shown in FIG. 2:

a processing unit for determining the first offset;

A transceiver unit, configured to send a first system information block SIB1 to a terminal device, where the first SIB1 includes the first offset and first SI scheduling information, where the first SI scheduling information is in the first SI message list Scheduling information of the SI message, the first SI message list includes the first system information SI message; the first offset and the first SI scheduling information are used to determine the starting position of the first SI window of the first SI message .

In an optional implementation manner, the first SI message is located in a first SI message list in the first SIB1, the first SI message list further includes a second SI message, the first SIB1 A second offset is also included, and the second offset is used to determine the starting position of the SI window of the second SI message.

In an optional implementation manner, the second offset is different from the first offset.

In an optional implementation manner, the first SI message list further includes a third SI message, and the first offset is further used to determine the starting position of the SI window of the third SI message.

In an optional implementation manner, the first SIB1 includes a first SI message list, a third SI message list, and a first positioning SI message list;

The first offset is determined according to the sum of the number of SI messages in the third SI message list;

Or, the first offset is determined according to the sum of the number of SI messages in the third SI message list and the first positioning SI message list;

Alternatively, the first offset is a preset value.

In an optional implementation manner, the system frame number SFN and the time slot number a where the starting position of the first SI window corresponding to the first SI message is located satisfy the following formula:

SFN mod T=FLOOR(y/N);

a=y mod N;

Wherein, y=x+Δ×w, or y=x+Δ; x is determined according to the first SI scheduling information, Δ is the first offset, and w is the length of the first SI window ; FLOOR() is a round-down operation, mod is a remainder operation, N is the number of time slots included in a radio frame, and T is the transmission period of the first SI message.

In an optional implementation manner, x=(n−1)×w, n is the sequence number of the first SI message in the first SI message list, and the SI in the first SI message list Messages are numbered from 1;

Or, x=n×w, n is the sequence number of the first SI message in the first SI message list, and the SI messages in the first SI message list are numbered from 0.

Exemplarily, when the apparatus 1100 implements the function of the terminal device in the process shown in FIG. 2:

A transceiver unit, configured to receive a first system information block SIB1 from a network device, where the first SIB1 includes a first offset and first SI scheduling information; the first SI scheduling information is the SI in the first SI message list scheduling information of the message, the first SI message list includes the first system information SI message;

a processing unit, configured to determine the starting position of the first SI window of the first SI message according to the first SI scheduling information and the first offset;

The transceiver unit is further configured to receive the first SI message within the first SI window.

In an optional implementation manner, the first SI message is located in a first SI message list in the first SIB1, the first SI message list further includes a second SI message, the first SIB1 A second offset is also included, and the second offset is used to determine the starting position of the SI window of the second SI message.

In an optional implementation manner, the second offset is different from the first offset.

In an optional implementation manner, the first SI message list further includes a third SI message, and the first offset is further used to determine the starting position of the SI window of the third SI message.

In an optional implementation manner, the first SIB1 includes a first SI message list, a third SI message list, and a first positioning SI message list;

The first offset is determined according to the sum of the number of SI messages in the third SI message list;

Or, the first offset is determined according to the sum of the number of SI messages in the third SI message list and the first positioning SI message list;

Alternatively, the first offset is a preset value.

In an optional implementation manner, the system frame number SFN and the time slot number a where the starting position of the first SI window corresponding to the first SI message is located satisfy the following formula:

SFN mod T=FLOOR(y/N);

a=y mod N;

Wherein, y=x+Δ×w, or y=x+Δ; x is determined according to the first SI scheduling information, Δ is the first offset, and w is the length of the first SI window ; FLOOR() is a round-down operation, mod is a remainder operation, N is the number of time slots included in a radio frame, and T is the transmission period of the first SI message.

In an optional implementation manner, x=(n−1)×w, n is the sequence number of the first SI message in the first SI message list, and the SI in the first SI message list Messages are numbered from 1;

Or, x=n×w, n is the sequence number of the first SI message in the first SI message list, and the SI messages in the first SI message list are numbered from 0.

FIG. 12 shows an apparatus 1200 provided in this embodiment of the present application. The apparatus shown in FIG. 12 may be a hardware circuit implementation of the apparatus shown in FIG. 11 . The communication apparatus can be applied to the flowchart shown in FIG. 4 to perform the functions of the terminal device or the network device in the foregoing method embodiments. For convenience of explanation, FIG. 12 only shows the main components of the communication device.

The apparatus 1200 shown in FIG. 12 includes at least one processor 1220 , a communication interface 1210 and a memory 1230 . The processor 1220 is used to execute the instructions or programs stored in the memory 1230 . When the instructions or programs stored in the memory 1230 are executed, the processor 1220 is used to perform the operations performed by the processing unit 1101 in the above embodiments, and the communication interface 1210 is used to perform the operations performed by the transceiver unit 1102 in the above embodiments.

Memory 1230 for storing program instructions and/or data. Memory 1230 and processor 1220 are coupled. The coupling in the embodiments of the present application is an indirect coupling or communication connection between devices, units or modules, which may be in electrical, mechanical or other forms, and is used for information exchange between devices, units or modules. The processor 1220 may cooperate with the memory 1230. Processor 1220 may execute program instructions stored in memory 1230 . At least one of the at least one memory may be included in the processor.

As will be appreciated by those skilled in the art, the embodiments of the present application may be provided as a method, a system, or a computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, etc.) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to the present application. It will be understood that each flow and/or block in the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to the processor of a general purpose computer, special purpose computer, embedded processor or other programmable data processing device to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing device produce Means for implementing the functions specified in a flow or flow of a flowchart and/or a block or blocks of a block diagram.

These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory result in an article of manufacture comprising instruction means, the instructions The apparatus implements the functions specified in the flow or flow of the flowcharts and/or the block or blocks of the block diagrams.

Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims (32)

A method for transmitting a system information block, comprising: The network device determines the first offset; The network device sends a first system information block SIB1 to the terminal device, where the first SIB1 includes the first offset and first SI scheduling information, where the first SI scheduling information is the SI in the first SI message list The scheduling information of the message, the first SI message list includes the first system information SI message; the first offset and the first SI scheduling information are used to determine the starting position of the first SI window of the first SI message. The method according to claim 1, wherein the first SI message is located in a first SI message list in the first SIB1, the first SI message list further includes a second SI message, the The first SIB1 further includes a second offset, and the second offset is used to determine the starting position of the SI window of the second SI message. The method of claim 2, wherein the second offset is different from the first offset. The method according to claim 1, wherein the first SI message list further includes a third SI message, and the first offset is further used to determine the start of an SI window of the third SI message Location. The method according to claim 1, wherein the first SIB1 comprises a first SI message list, a third SI message list, and a first positioning SI message list; The first offset is determined according to the sum of the number of SI messages in the third SI message list; Or, the first offset is determined according to the sum of the number of SI messages in the third SI message list and the first positioning SI message list; Alternatively, the first offset is a preset value. The method according to any one of claims 1 to 5, wherein the system frame number SFN and the time slot number a where the starting position of the first SI window corresponding to the first SI message is located satisfy the following formula: SFN mod T=FLOOR(y/N); a=y mod N; Wherein, y=x+Δ×w, or y=x+Δ; x is determined according to the first SI scheduling information, Δ is the first offset, and w is the length of the first SI window ; FLOOR() is a round-down operation, mod is a remainder operation, N is the number of time slots included in a radio frame, and T is the transmission period of the first SI message. The method according to claim 6, wherein x=(n−1)×w, n is the sequence number of the first SI message in the first SI message list, and the first SI message SI messages in the list are numbered from 1; Or, x=n×w, n is the sequence number of the first SI message in the first SI message list, and the SI messages in the first SI message list are numbered from 0. A method for transmitting a system information block, comprising: The terminal device receives a first system information block SIB1 from a network device, where the first SIB1 includes a first offset and first SI scheduling information; the first SI scheduling information is the scheduling of SI messages in the first SI message list information, the first SI message list includes the first system information SI message; determining, by the terminal device, the starting position of the first SI window of the first SI message according to the first SI scheduling information and the first offset; The terminal device receives the first SI message within the first SI window. The method according to claim 8, wherein the first SI message is located in a first SI message list in the first SIB1, the first SI message list further includes a second SI message, the The first SIB1 further includes a second offset, where the second offset is further used to determine the starting position of the SI window of the second SI message. The method of claim 9, wherein the second offset is different from the first offset. The method according to claim 8, wherein the first SI message list further includes a third SI message, and the first offset is used to determine a starting position of an SI window of the third SI message . The method according to claim 8, wherein the first SIB1 comprises a first SI message list, a third SI message list, and a first positioning SI message list; The first offset is determined according to the sum of the number of SI messages in the third SI message list; Or, the first offset is determined according to the sum of the number of SI messages in the third SI message list and the first positioning SI message list; Alternatively, the first offset is a preset value. The method according to any one of claims 8 to 12, wherein the system frame number SFN and the time slot number a where the starting position of the first SI window corresponding to the first SI message is located satisfy the following formula: SFN mod T=FLOOR(y/N); a=y mod N; Wherein, y=x+Δ×w, or y=x+Δ; x is determined according to the first SI scheduling information, Δ is the first offset, and w is the length of the first SI window ; FLOOR() is a round-down operation, mod is a remainder operation, N is the number of time slots included in a radio frame, and T is the transmission period of the first SI message. The method according to claim 13, wherein x=(n−1)×w, n is the sequence number of the first SI message in the first SI message list, and the first SI message SI messages in the list are numbered from 1; Or, x=n×w, n is the sequence number of the first SI message in the first SI message list, and the SI messages in the first SI message list are numbered from 0. A communication device, comprising: a processing unit for determining the first offset; A transceiver unit, configured to send a first system information block SIB1 to a terminal device, where the first SIB1 includes the first offset and first SI scheduling information, where the first SI scheduling information is in the first SI message list Scheduling information of the SI message, the first SI message list includes the first system information SI message; the first offset and the first SI scheduling information are used to determine the starting position of the first SI window of the first SI message . The communication device according to claim 15, wherein the first SI message is located in a first SI message list in the first SIB1, the first SI message list further includes a second SI message, and the The first SIB1 further includes a second offset, where the second offset is used to determine the starting position of the SI window of the second SI message. The communication device of claim 16, wherein the second offset is different from the first offset. The communication device according to claim 15, wherein the first SI message list further includes a third SI message, and the first offset is further used to determine the start of an SI window of the third SI message start position. The communication device according to claim 15, wherein the first SIB1 comprises a first SI message list, a third SI message list, and a first positioning SI message list; The first offset is determined according to the sum of the number of SI messages in the third SI message list; Or, the first offset is determined according to the sum of the number of SI messages in the third SI message list and the first positioning SI message list; Alternatively, the first offset is a preset value. The communication device according to any one of claims 15 to 19, wherein the system frame number SFN and the time slot number a where the starting position of the first SI window corresponding to the first SI message is located satisfy the following formula : SFN mod T=FLOOR(y/N); a=y mod N; Wherein, y=x+Δ×w, or y=x+Δ; x is determined according to the first SI scheduling information, Δ is the first offset, and w is the length of the first SI window ; FLOOR() is a round-down operation, mod is a remainder operation, N is the number of time slots included in a radio frame, and T is the transmission period of the first SI message. The communication device according to claim 20, wherein x=(n−1)×w, n is the sequence number of the first SI message in the first SI message list, and the first SI message SI messages in the message list are numbered from 1; Or, x=n×w, n is the sequence number of the first SI message in the first SI message list, and the SI messages in the first SI message list are numbered from 0. A communication device, comprising: A transceiver unit, configured to receive a first system information block SIB1 from a network device, where the first SIB1 includes a first offset and first SI scheduling information; the first SI scheduling information is the SI in the first SI message list scheduling information of the message, the first SI message list includes the first system information SI message; a processing unit, configured to determine the starting position of the first SI window of the first SI message according to the first SI scheduling information and the first offset; The transceiver unit is further configured to receive the first SI message within the first SI window. The communication device according to claim 22, wherein the first SI message is located in a first SI message list in the first SIB1, the first SI message list further includes a second SI message, and the The first SIB1 further includes a second offset, where the second offset is used to determine the starting position of the SI window of the second SI message. The communication device of claim 23, wherein the second offset is different from the first offset. The communication device according to claim 22, wherein the first SI message list further includes a third SI message, and the first offset is further used to determine the start of an SI window of the third SI message start position. The communication device according to claim 22, wherein the first SIB1 comprises a first SI message list, a third SI message list, and a first positioning SI message list; The first offset is determined according to the sum of the number of SI messages in the third SI message list; Or, the first offset is determined according to the sum of the number of SI messages in the third SI message list and the first positioning SI message list; Alternatively, the first offset is a preset value. The communication device according to any one of claims 22 to 26, wherein the system frame number SFN and the time slot number a where the starting position of the first SI window corresponding to the first SI message is located satisfy the following formula : SFN mod T=FLOOR(y/N); a=y mod N; Wherein, y=x+Δ×w, or y=x+Δ; x is determined according to the first SI scheduling information, Δ is the first offset, and w is the length of the first SI window ; FLOOR() is a round-down operation, mod is a remainder operation, N is the number of time slots included in a radio frame, and T is the transmission period of the first SI message. The communication device according to claim 27, wherein x=(n−1)×w, n is the sequence number of the first SI message in the first SI message list, and the first SI message SI messages in the message list are numbered from 1; Or, x=n×w, n is the sequence number of the first SI message in the first SI message list, and the SI messages in the first SI message list are numbered from 0. A communication device, comprising a processor and a memory: The processor, for executing the computer program or instruction stored in the memory, when the processor executes the computer program or instruction, as described in any one of claims 1 to 7 or 8 to 14 method is executed. A readable storage medium, characterized by comprising a computer program or instruction, when the communication device executes the computer program or instruction, the method according to any one of claims 1 to 7 or 8 to 14 is performed. A chip or chip system, characterized by comprising a processor, which is coupled to a memory for executing computer programs or instructions stored in the memory, and when the processor executes the computer program or instructions , the method of any one of claims 1 to 7 or 8 to 14 is performed. A communication system, characterized by comprising the communication device described in any one of claims 15 to 21 and the communication device described in any one of claims 22 to 28 .

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