CN110035510B

CN110035510B - Information sending and receiving method and device

Info

Publication number: CN110035510B
Application number: CN201810031342.8A
Authority: CN
Inventors: 刘星; 郝鹏; 毕峰
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2018-01-12
Filing date: 2018-01-12
Publication date: 2023-07-14
Anticipated expiration: 2038-01-12
Also published as: CN110035510A

Abstract

The invention provides an information sending and receiving method and device, wherein the information sending method comprises the following steps: carrying first system information in a Physical Broadcast Channel (PBCH) in a mode of joint coding with second system information, wherein the first system information is used for indicating resources which need to be subjected to rate matching or skipping when receiving Residual Minimized System Information (RMSI) to a terminal; and the PBCH is sent to the terminal, so that the problem that excessive inefficient rate matching needs to be introduced in the related technology is solved, and the resource utilization efficiency is improved.

Description

Information sending and receiving method and device

Technical Field

The present invention relates to the field of communications, and in particular, to a method and apparatus for sending and receiving information.

Background

With the continuous progress of radio technologies, various radio services are largely emerging, and spectrum resources supported by the radio services are limited, so that the situation that spectrum resources between 300MHz and 3GHz mainly used by traditional commercial communication are extremely tight is faced to the continuous increase of bandwidth requirements of people, and the requirements of future wireless communication cannot be met.

To ensure flexibility in data transmission, the relationship between the time domain positions of different synchronization signals/physical broadcast channel blocks (SS/PBCH blocks, synchronization signal/Physical broadcast channel block, abbreviated SSB) and the time domain positions of respective corresponding minimum system information (Remaining minimun System information, abbreviated RMSI) control resource sets (Control Resource Set, abbreviated CORESET) may be different, and how to effectively indicate the time domain positions of the RMSI common control resource sets without affecting PBCH combining reception must be considered. RMSI may also be referred to as SIB1 (System Information Block 1).

When the terminal receives the minimized system information RMSI, rate matching is required according to the minimum SSB transmission period. That is, assuming that there is an SSB transmission every 5ms, when the RMSI collides with the SSB described above, all potential SSB resources need to be reserved, and the RMSI around it is received in a rate-matched manner; accordingly, although most of the potential SSB resources do not actually transmit SSBs, the base station cannot utilize this portion of resources for the transmission of the co-ported RMSI. This is a huge waste of resources, which increases the transmission delay of RMSI and the blocking rate for normal data transmission, and even the RMSI transmission for all beam directions/ports cannot be completed within 20ms transmission period of RMSI. This is unacceptable in system design, and therefore, how to more efficiently configure the time domain location of RMSI CORESET, avoiding excessive unnecessary resource reservations is a matter of concern.

No solution has been proposed to solve the problem of the related art that too much inefficient rate matching needs to be introduced.

Disclosure of Invention

The embodiment of the invention provides an information sending and receiving method and device, which at least solve the problem that excessive low-efficiency rate matching needs to be introduced in the related technology.

According to an embodiment of the present invention, there is provided an information transmission method including:

carrying first system information in a Physical Broadcast Channel (PBCH) in a mode of joint coding with second system information, wherein the first system information is used for indicating resources which need to be subjected to rate matching or skipping when receiving Residual Minimized System Information (RMSI) to a terminal;

and sending the PBCH to the terminal.

Optionally, before the first system information is carried in the PBCH by being jointly encoded with the second system information, the method further includes:

setting a limiting condition and setting a corresponding relation between the limiting condition and one or more parameter values in the second system information; or,

and fixedly configuring one or more parameter values in the second system information.

Optionally, the setting the limiting condition includes one of:

setting the limiting condition according to the first system information, the position of the SSB where the PBCH is located in the RMSI transmission period, and the duration of the synchronous signal window group, wherein the duration of the synchronous signal window group is the duration of transmitting the SSB in one period, and the synchronous signal window group comprises a plurality of SSBs;

Setting the limiting condition according to the first system information, the position of the SSB where the PBCH is located in the RMSI transmission period, the subcarrier interval of the SSB and the maximum number of the SSB;

and setting the limiting conditions according to the first system information, the position of the SSB where the PBCH is located in the RMSI transmission period, the subcarrier interval of the SSB and the frequency range to which the SSB belongs.

Optionally, the setting a correspondence between the constraint condition and one or more parameter values in the second system information includes:

and setting the corresponding relation between the limiting condition and the time offset value in the search space configuration information of the RMSI physical downlink control channel (Physical Downlink Control Channel, PDCCH for short).

Optionally, the second system information includes at least one of:

SSB subcarrier offset indication information;

RMSI physical downlink control channel PDCCH configuration information.

Optionally, the RMSI PDCCH configuration information includes: RMSI control resource set configuration information and RMSI PDCCH search space configuration information.

Optionally, the RMSI control resource set configuration information includes at least one of: the RMSI controls the frequency domain location of the resource set, the RMSI controls the bandwidth of the resource set, the RMSI controls the duration of the resource set, and the RMSI controls the multiplexing pattern between the resource set and the SSB.

Optionally, the RMSI PDCCH search space configuration information includes at least one of:

a time offset, wherein the time offset is an offset between a start point of a first PDCCH monitoring window and a start boundary of an even radio frame;

the number of search spaces in a slot;

offset between adjacent PDCCH monitoring windows;

the starting symbol index of the search space within one slot.

Optionally, the first system information includes at least one of: the method comprises the steps of period information of a synchronous signal window group, quantity information of the synchronous signal window group in an RMSI transmission period, position pattern information of the synchronous signal window group in the RMSI transmission period, resource pattern information of RMSI transmission required rate matching or skipping in the RMSI transmission period and frame structure configuration information.

Optionally, the period information of the synchronization signal window group includes at least one of: and the value range information of the period of the synchronous signal window group is the value information of the period of the synchronous signal window group.

Optionally, the number of synchronization signal window groups in the RMSI transmission period includes at least one of: 1,2,4,8.

Optionally, the pattern of the positions of the synchronization signal window group in the RMSI transmission period includes at least one of the following:

Position pattern 1: the synchronous signal window group is transmitted once in the RMSI transmission period and is contained in any half frame;

position pattern 2: the synchronous signal window group is transmitted twice in the RMSI transmission period and is contained in a first field and a third field or in a second field and a fourth field;

position pattern 3: the synchronization signal window group is transmitted four times in the RMSI transmission period and is included in the first, second, third, and fourth half frames, respectively.

Optionally, the resource pattern information of rate matching or skipping required for RMSI transmission in the RMSI transmission period includes at least one of the following:

resource pattern 1: the resources needing rate matching or skipping are contained in any half frame in the RMSI transmission period;

resource pattern 2: the resources needing rate matching or skipping are contained in a first field and a third field or in a second field and a fourth field in the RMSI transmission period;

resource pattern 3: the resources that require rate matching or skipping are contained in all half frames within the RMSI transmission period.

Optionally, the frame structure configuration information includes at least one of the following information: and the frame structure is arranged in a period, the configuration patterns of different time slot types are arranged in the period of the frame structure, and the sub-carrier intervals corresponding to the frame structure are arranged.

Optionally, the resources include at least one of: resources occupied by the synchronous signal block, a guard interval symbol, an uplink time slot, an unknown time slot and an unknown symbol.

Optionally, when the RMSI overlaps with the resources that need to be rate-matched or skipped, the RMSI performs rate-matched based transmission around the resources that need to be rate-matched or skipped; or when the RMSI overlaps with the resources needing to be rate-matched or skipped, the RMSI skips the resources needing to be rate-matched or skipped.

According to another embodiment of the present invention, there is also provided an information receiving method including:

receiving a Physical Broadcast Channel (PBCH) sent by a base station, wherein the PBCH carries first system information and second system information in a joint coding mode;

and determining resources which need to be subjected to rate matching or skipping when receiving the Residual Minimized System Information (RMSI) according to the first system information.

Optionally, the second system information includes at least one of:

SSB subcarrier offset indication information;

RMSI physical downlink control channel PDCCH configuration information.

the number of search spaces in a slot;

offset between adjacent PDCCH monitoring windows;

the starting symbol index of the search space within one slot.

Optionally, when the RMSI and the resource needing rate matching or skipping are received by the RMSI based on rate matching at the resource needing rate matching or skipping; or when the RMSI and the resource needing rate matching or skipping are used, the RMSI skips the resource needing rate matching or skipping.

According to still another embodiment of the present invention, there is also provided an information transmitting apparatus including:

the bearing module is used for bearing the first system information in a Physical Broadcast Channel (PBCH) in a mode of joint coding with the second system information, wherein the first system information is used for indicating resources which need to be subjected to rate matching or skipping when receiving the Residual Minimized System Information (RMSI) to the terminal;

And the sending module is used for sending the PBCH to the terminal.

Optionally, the apparatus further comprises:

the setting module is used for setting a limiting condition and setting a corresponding relation between the limiting condition and one or more parameter values in the second system information; or,

and the configuration module is used for fixedly configuring the value of one or more parameters in the second system information.

Optionally, the setting module is further configured to perform a method including one of:

setting the limiting condition according to the first system information, the position of the SSB where the PBCH is located in the RMSI transmission period and the duration of the synchronous signal window group, wherein the duration of the synchronous signal window group is the duration of SSB in one transmission period;

According to still another embodiment of the present invention, there is also provided an information receiving apparatus including:

a receiving module, configured to receive a physical broadcast channel PBCH sent by a base station, where the PBCH carries first system information and second system information in a joint coding manner;

and the determining module is used for determining resources which need to be subjected to rate matching or skipping when receiving the Residual Minimized System Information (RMSI) according to the first system information.

According to a further embodiment of the invention, there is also provided a storage medium having stored therein a computer program, wherein the computer program is arranged to perform the steps of any of the method embodiments described above when run.

According to a further embodiment of the invention there is also provided an electronic device comprising a memory having stored therein a computer program and a processor arranged to run the computer program to perform the steps of any of the method embodiments described above.

By the method and the device, the first system information and other information in the PBCH are jointly encoded, so that the position in the RMSI transmission period can be determined, and the RMSI transmission can be rate-matched based on the position of a more accurate synchronous signal window group, thereby solving the problem that excessive and inefficient rate matching is required to be introduced in the related technology and improving the resource utilization efficiency.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention. In the drawings:

fig. 1 is a block diagram of a hardware structure of a mobile terminal of an information receiving method according to an embodiment of the present invention;

fig. 2 is a flowchart of an information transmission method according to an embodiment of the present invention;

fig. 3 is a flowchart of an information receiving method according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of the structure of an SSB according to an embodiment of the invention;

FIG. 5 is a schematic diagram of RMSI multiplexing with SSB according to an embodiment of the invention;

FIG. 6 is a schematic diagram of potential locations of SSBs during a RMSI transmission period, according to an embodiment of the invention;

fig. 7 is a schematic diagram of a 20ms RMSI transmission period structure according to an embodiment of the present invention;

FIG. 8 is a schematic diagram I of a time domain mapping pattern of an SSB according to an embodiment of the invention;

FIG. 9 is a second schematic diagram of a time domain mapping pattern of an SSB according to an embodiment of the invention;

fig. 10 is a schematic diagram of RMSI transmission according to an embodiment of the present invention;

FIG. 11 is a schematic diagram of a typical cell specific frame structure according to an embodiment of the present invention;

Fig. 12 is a schematic structural diagram of RMSI transmission according to an embodiment of the present invention;

fig. 13 is a block diagram of an information transmission apparatus according to an embodiment of the present invention;

fig. 14 is a block diagram of an information receiving apparatus according to an embodiment of the present invention.

Detailed Description

The invention will be described in detail hereinafter with reference to the drawings in conjunction with embodiments. It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order.

Example 1

The method embodiment provided in the first embodiment of the present application may be executed in a mobile terminal, a computer terminal or a similar computing device. Taking the mobile terminal as an example, fig. 1 is a block diagram of a hardware structure of a mobile terminal of an information receiving method according to an embodiment of the present invention. As shown in fig. 1, the mobile terminal 10 may include one or more (only one is shown in fig. 1) processors 102 (the processor 102 may include, but is not limited to, a microprocessor MCU or a processing device such as a programmable logic device FPGA) and a memory 104 for storing data, and optionally a transmission device 106 for communication functions and an input-output device 108. It will be appreciated by those skilled in the art that the structure shown in fig. 1 is merely illustrative and not limiting of the structure of the mobile terminal described above. For example, the mobile terminal 10 may also include more or fewer components than shown in FIG. 1 or have a different configuration than shown in FIG. 1.

The memory 104 may be used to store a computer program, for example, a software program of an application software and a module, such as a computer program corresponding to a service transmission method in an optical transport network in an embodiment of the present invention, and the processor 102 executes the computer program stored in the memory 104, thereby performing various functional applications and data processing, that is, implementing the above-mentioned method. Memory 104 may include high-speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 104 may further include memory located remotely from the processor 102, which may be connected to the mobile terminal 10 via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.

The transmission means 106 is arranged to receive or transmit data via a network. The specific examples of networks described above may include wireless networks provided by the communication provider of the mobile terminal 10. In one example, the transmission device 106 includes a network adapter (Network Interface Controller, simply referred to as NIC) that can connect to other network devices through a base station to communicate with the internet. In one example, the transmission device 106 may be a Radio Frequency (RF) module, which is used to communicate with the internet wirelessly.

In future wireless communication, a carrier frequency higher than that adopted by a fourth generation (4G) communication system will be adopted for communication, for example, 28GHz, 45GHz and the like, and the high-frequency channel has the defects of larger free propagation loss, easy absorption by oxygen, large influence by rain degradation and the like, so that the coverage performance of the high-frequency communication system is seriously affected, and in order to ensure that the high-frequency communication has an approximate signal to interference plus noise ratio (Signal to Interference plus Noise Ratio, abbreviated as SINR) within the coverage of the LTE system, the antenna gain of the high-frequency communication needs to be ensured. Fortunately, because the carrier frequency corresponding to the high-frequency communication has shorter wavelength, more antenna elements can be contained in a unit area, and the more antenna elements mean that the antenna gain can be improved by adopting a beam forming method, so that the coverage performance of the high-frequency communication is ensured.

After the beam forming method is adopted, the transmitting end can concentrate the transmitting energy in a certain direction, and the energy in other directions is very small or none, that is, each beam has own directivity, each beam can only cover the terminal in a certain direction, and the transmitting end, namely the base station, can complete all-directional coverage by transmitting a plurality of beams. Typically, the number of beams is tens or even hundreds. In order to meet the access requirement of the terminal in each direction, the system broadcast message must be covered in all directions, the communication station needs to repeatedly send the same system broadcast message in each beam direction, and the problem that the "absolute overhead" of the system broadcast message becomes large for the communication station is also existed.

In the new generation wireless communication system NR, system information is classified into minimized system information (minimum SI) and other system information (other SI). Wherein the minimized system information is further divided into "master system information (MIB)" carried on a Physical Broadcast Channel (PBCH), and "remaining minimized system information (Remaining minimum SI, abbreviated RMSI)" carried on a physical downlink shared channel; the main system information is used to provide cell basic system parameters, and the remaining minimum system information is used to provide initial access related configuration information, such as initial access request transmission configuration, initial access response message reception configuration, and the like. Other system information that needs to be broadcast is referred to as other system information.

The RMSI is scheduled by a physical downlink control channel PDCCH and carried on a physical downlink shared channel PDSCH. The time-frequency domain location of the common control resource set CORESET where the RMSI scheduling information is located may be indicated in the PBCH.

In the NR system, the PBCH is carried and sent in SSBs, where one synchronization period includes multiple SSBs, and different SSBs may send synchronous broadcast signals in the same or different beam directions or ports, so as to jointly implement full coverage of the expected area. The PBCH of different beam directions or ports has a need for combining reception, so that the information content is ensured to be the same when considering the introduction of indication information into the PBCH.

In the related standard discussion, the transmission period of SSB supports the following six: 5ms,10ms,20ms,40ms,80ms and 160ms. The terminal cannot learn about the transmission period of the SSB until it receives the Remaining Minimum System Information (RMSI)/system information block 1 (SIB 1),

in this embodiment, an information sending method is provided, fig. 2 is a flowchart of the information sending method according to an embodiment of the present invention, and as shown in fig. 2, the flowchart includes the following steps:

step S202, carrying first system information in a Physical Broadcast Channel (PBCH) in a mode of joint coding with second system information, wherein the first system information is used for indicating resources which need to be subjected to rate matching or skipping when receiving Residual Minimized System Information (RMSI) to a terminal;

step S204, the PBCH is sent to the terminal.

Through the steps, the first system information and other information in the PBCH are subjected to joint coding, so that the position in the RMSI transmission period can be determined, and the transmission of the RMSI can be subjected to rate matching based on the position of a more accurate synchronous signal window group, thereby solving the problem that excessive and inefficient rate matching needs to be introduced in the related technology, and improving the resource utilization efficiency.

Optionally, the setting the limiting condition includes one of:

and setting the corresponding relation between the limiting condition and the time offset value in the PDCCH search space configuration information of the RMSI physical downlink control channel.

Optionally, the second system information includes at least one of:

SSB subcarrier offset indication information;

RMSI physical downlink control channel PDCCH configuration information.

the number of search spaces in a slot;

Offset between adjacent PDCCH monitoring windows;

the starting symbol index of the search space within one slot.

Example 2

In this embodiment, there is provided an information receiving method operating on the mobile terminal, and fig. 3 is a flowchart of the information receiving method according to an embodiment of the present invention, as shown in fig. 3, where the flowchart includes the following steps:

step S302, receiving a physical broadcast channel PBCH sent by a base station, wherein the PBCH carries first system information and second system information in a joint coding mode;

step S304, determining, according to the first system information, resources that need to be rate-matched or skipped when receiving the remaining minimized system information RMSI.

Optionally, the second system information includes at least one of:

SSB subcarrier offset indication information;

RMSI physical downlink control channel PDCCH configuration information.

the number of search spaces in a slot;

offset between adjacent PDCCH monitoring windows;

the starting symbol index of the search space within one slot.

Optionally, the resources include at least one of: resources occupied by the synchronous signal block, a guard interval symbol, an uplink time slot, an unknown time slot and an unknown symbol. The guard interval symbol refers to a symbol required for switching from downlink transmission to uplink transmission. The guard interval symbols may be contained within an unknown slot or range of unknown symbols.

In the embodiment of the invention, one or more of the following downlink control information may be included in the control resource set CORESET: scheduling information of the remaining minimized system information (Remaining Minimum System Information, abbreviated RMSI), paging downlink control information, paging indication, scheduling information of other broadcasting system information (broadcast Other System Information, abbreviated broadcast OSI), scheduling information of a random access corresponding Msg2, authorization information of Msg3, scheduling information of Msg4, and the like. Because the information needs to realize the full coverage of the expected range, a certain CORESET sends common control information of a certain specific downlink port/downlink beam direction, and one or more CORESETs are included in a polling transmission period/CORESET monitoring period, and the common control information of one or more downlink ports/downlink beam directions is sent, so that the coverage of the expected range is realized.

Paging downlink control information (paging DCI) for indicating scheduling information of paging messages, also called paging scheduling downlink control information paging scheduling DCI;

in the new generation wireless communication system NR, system information is classified into minimized system information (minimum SI) and other system information (other SI). Wherein the minimized system information is further divided into "master system information (MIB)" carried on a Physical Broadcast Channel (PBCH), and "remaining minimized system information RMSI" carried on a physical downlink shared channel; the main system information is used to provide cell basic system parameters, and the remaining minimum system information is used to provide initial access related configuration information, such as initial access request transmission configuration, initial access response message reception configuration, and the like. Other system information that needs to be broadcast is called other system information (other SI).

The paging indicator is used for triggering the terminal to report the downlink preferred beam, and is also called paging packet indicator paging group indicator.

Synchronization signal/physical broadcast channel block SSB: for carrying synchronization signals, time-frequency and resources of access related signal channels such as physical broadcast channels (and corresponding demodulation reference signals (Demodulation Reference Signal, abbreviated as DMRS)), fig. 4 is a schematic diagram of an SSB according to an embodiment of the present invention, as shown in fig. 4, the SSB generally includes 4 symbols, a primary synchronization signal (Primary Synchronization Signal, abbreviated as PSS) and a secondary synchronization signal (SSS, secondary Synchronization Signal) are respectively carried on a first symbol and a third symbol, the synchronization signal sequences are respectively mapped on 127 Resource Elements (REs) in 12 physical resource blocks (physical resource block, abbreviated as PRBs), the physical broadcast channels PBCH are mapped on a second symbol, a third symbol and a fourth symbol in the SSB, and the number of occupied PRBs is exemplified by 20 PRBs on the second symbol and the fourth symbol, 4 PRBs on both sides of the secondary synchronization signal are occupied by the PBCH, and the center frequency of the synchronization signal is aligned with the PBCH under the above configuration, and the PBCH is inserted in the same density (3/RB) in each dmrb.

The synchronization signal/physical broadcast channel window group (SS/PBCH burst set) is composed of a plurality of SSBs, which are abbreviated as synchronization signal window groups. The maximum number of SSBs contained in the synchronous signal window group is different in different frequency band ranges. The above-described signal channels for different ports or beam directions may be transmitted within different SSBs.

Fig. 5 is a schematic diagram of multiplexing RMSI and SSB according to an embodiment of the present invention, and as shown in fig. 5, there are three multiplexing manners of RMSI and SSB:

pattern1: RMSI time division multiplexed with SSB;

pattern2: the common resource set CORESET of RMSI is time division multiplexed with SSB, RMSI PDSCH is frequency division multiplexed with SSB;

pattern3: RMSI (including CORESET and PDSCH) is frequency division multiplexed with SSB.

For multiplexing pattern1, each SSB corresponds to one RMSI PDCCH monitoring window, and the monitoring window duration is 1 or more slots (slots), typically a value of 2slots. Within each RMSI PDCCH monitoring window corresponding to an SSB, one or more RMSI CORESET potential configuration resources are contained, among which the base station selects one RMSI PDCCH for transmission corresponding to that SSB. The terminal finds RMSI PDCCH monitoring window corresponding to this SSB based on the selected SSB index and RMSI PDCCH configuration information. And blindly tests RMSI PDCCH on RMSI core potential configuration resources within the window. Wherein RMSI PDCCH configuration information includes RMSI core configuration information, and RMSI PDCCH search space configuration information (which may also be referred to as RMSI PDCCH monitoring window configuration information); further, the RMSI core configuration information includes at least one of the following: the frequency domain location of RMSI core, the bandwidth of RMSI core (e.g., 24 RBs, 48 RBs, 96 RBs, etc.), the duration of RMSI core (e.g., 1 OFDM (Orthogonal Frequency Division Multiplexing) symbol, or 2 OFDM symbols, or 3 OFDM symbols, etc.). The RMSI PDCCH search space configuration information includes at least one of: time offset: offset between the start of the first PDCCH monitoring window and the start boundary of the even radio frame; the number of search spaces in a slot; offset between adjacent PDCCH monitoring windows; the starting symbol index of the search space within one slot.

As shown in table 1, an example of the RMSIPDCCH search space configuration in the multiplexing mode pattern1 is a frequency range of 6GHz or less. Where O represents an offset between a first RMSI PDCCH monitoringwindow start point and an even numbered radio frame (i.e., a radio frame satisfying SFN mod2=0) start boundary, and the values include: 0ms,2ms,5ms,7ms. N represents the number of search spaces in a slot; m is an intermediate parameter, and has no physical significance; n x M represents the offset between adjacent RMSI PDCCH monitoring window, i.e. the number of slots offset between the N RMSI PDCCH monitoring window th start point and the n+1th RMSI PDCCH monitoring window th start point, or the number of offset search spaces, where slots correspond to the subcarrier spacing of RMSI.

Representing the number of symbols contained in CORESET. i is the SSB index.

The table 1 contains 16 configurations, corresponding to configuration indexes (index) of 0 to 15, indicating which configuration is currently used for RMSI PDCCH search space with 4 bits in PBCH.

TABLE 1

As shown in table 2, the frequency range is 6GHz or more, and RMSIPDCCH search space configuration example in multiplexing pattern2, i.e., the position indicated by RMSI PDCCH monitoring occasion, is indicated by 120kHz subcarrier spacing suitable for SSB, and 60kHz subcarrier spacing for rmsi. Wherein PDCCH monitoring occasions is configured in the same radio frame, the same time slot, i.e. SFN, as the corresponding SSB _C ＝SFN _SSB ，n _C ＝n _SSB Wherein, SFNC represents the system frame number of the radio frame where the RMSI common control resource set (CORESET) is located, SFNSSB represents the system frame number of the radio frame where the SSB is located; nc denotes the index of the slot in which the RMSI common control resource set (CORESET) is located, nsb denotes the index of the slot in which SSB is located. Further, the starting symbol index of RMSI PDCCH monitoring occasion relates to the number of symbols of the RMSI common resources set (CORESET):

when RMSI CORESET occupies 1 symbol (i.e

) When SSB indexes i=4k, i=4k+1, i=4k+2, and i= 4k+3,RMSI PDCCH monitoring occasion are respectively: 0,1,6,7. At this time, different CORESET occupy different symbols.

When RMSI CORESET occupies 2 symbols (i.e

) When SSB indexes i=4k, i=4k+1, i=4k+2, and i= 4k+3,RMSI PDCCH monitoring occasion are respectively: 0,0,6,6. At this point, one CORESET is shared by the RMSI PDCCH corresponding to two adjacent SSBs, and their corresponding RMSIPDCCH occupies different frequency domain resources within the CORESET when both SSBs are transmitted.

TABLE 2

As shown in table 3, the frequency range is 6GHz or more, the search space configuration of RMSIPDCCH in the multiplexing pattern2 is exemplified, the subcarrier spacing of SSB is 240kHz, and the subcarrier spacing of rmsi is 120kHz. Wherein PDCCH monitoring occasions is configured in the same time slot of the same radio frame as the corresponding SSB, or in the previous time slot of the same radio frame, i.e. SFN _C ＝SFN _SSB ，n _C ＝n _SSB Or n _C ＝n _SSB -1, wherein SFNC represents a system frame number of a radio frame where an RMSI common control resource set (CORESET) is located, and SFNSSB represents a system frame number of a radio frame where SSB is located; nc denotes the index of the slot in which the RMSI common control resource set (CORESET) is located, nsb denotes the index of the slot in which SSB is located. Further, the starting symbol index of RMSI core is related to the number of symbols of RMSI core:

when RMSI CORESET occupies 1 symbol (i.e

) When, for SSB index i=8k, i=8k+1, i=8k+2, i=8k+3, i=8k+6, i= 8k+7,RMSI CORESET is the same as the slot index where the corresponding SSB is located, i.e. n _C ＝n _SSB And RMSI CORESET start symbol indexes are respectively: 0,1,2,3,0,1; for SSB index i=8k+4, i= 8k+5,RMSI CORESET is the time slot preceding the time slot in which the corresponding SSB is located, i.e. n _C ＝n _SSB -1, and RMSI CORESET start symbol index is: 12,13. At this time, different CORESET occupy different symbols.

When RMSI CORESET occupies 2 symbols (i.e

) When, for SSB index i=8k, i=8k+1, i=8k+2, i=8k+3, i=8k+6, i= 8k+7,RMSI CORESET is the same as the slot index where the corresponding SSB is located, i.e. n _C ＝n _SSB And RMSI CORESET start symbol indexes are respectively: 0,0,2,2,0,0; for SSB index i=8k+4, i= 8k+5,RMSI CORESET is the time slot preceding the time slot in which the corresponding SSB is located, i.e. n _C ＝n _SSB -1, and RMSI CORESET start symbol indexThe primers are respectively as follows: 12,12. At this point, one CORESET is shared by the RMSI PDCCH corresponding to two adjacent SSBs, and their corresponding RMSI PDCCH occupies different frequency domain resources within the CORESET when both SSBs are transmitted.

TABLE 3 Table 3

In table 2 and table 3, the initial symbol configuration of RMSI PDCCH search space is different for different CORESET symbol numbers, but since the terminal can obtain the indication of CORESET symbol number in the RMSI CORESET configuration information, the terminal and the terminal can share the same search space configuration index, i.e., index0; two kinds of symbols may also be respectively configured with indexes, for example, for a wireless frame number where a CORESET, RMSI PDCCH search space of 1 symbol is located, a slot number, and a start symbol index in a slot corresponds to index0; for a radio frame number where CORESET, RMSI PDCCH of 2 symbols is located, a slot number, a starting symbol index within a slot corresponds to index1.

Fig. 6 is a schematic diagram of a potential location of an SSB in an RMSI transmission period according to an embodiment of the present invention, as shown in fig. 6, in a 20ms RMSI transmission period (the RMSI transmission period starts with a radio frame of SFN mod 2=0 and includes two radio frame lengths, the transmission period of the RMSI may be predefined to other values, for example, 40ms,80ms, etc., and in this embodiment, the description is given taking 20ms as an example, and other period configurations may be similar along the way). Specifically, SSBs may be configured within any 5ms within 20ms, and in the case where the maximum number of SSBs is 8 within the subcarrier spacing of SSBs 15kHz,SS burst set, the duration of the synchronization signal window group SS burst set is 4ms (i.e., SSBs occupy the first 4ms of 5 ms). The duration of SSBs may be different at different subcarrier spacings and different maximum numbers of SSBs. In the RMSI transmission period of 20ms, since the terminal does not have the SSB transmission period (which may also be called SS burst set periodicity, and has the value range of 5ms,10ms,20ms,40ms,80ms,160 ms) information when receiving the RMSI, it needs to make assumptions according to the minimum SSB transmission period, that is, each 5ms assumption contains SSB, and perform rate-matching-based RMSI reception around it. It can be seen that when the period of SS burst set is greater than 5ms, many potential SSB resources do not actually transmit SSB. But the transmission of RMSI cannot be occupied, which is a great resource waste.

To indicate to the terminal the resources that need to be rate matched or skipped when receiving RMSI, at least one of the following information may be indicated in the PBCH:

the method comprises the steps of period information of a synchronous signal window group, quantity information of the synchronous signal window group in an RMSI transmission period, position pattern information of the synchronous signal window group in the RMSI transmission period, resource pattern information of RMSI transmission required rate matching or skipping in the RMSI transmission period and frame structure configuration information.

Wherein the period information of the synchronization signal window group includes at least one of: the value range information of the period of the synchronous signal window group; and the specific value information of the period of the synchronous signal window group. The following values are taken in different periods:

when SS burst set periodicity is greater than or equal to 20ms, SSB transmissions comprising only one period within a 20ms RMSI transmission period;

when SS burst set periodicity =10 ms, SSB transmission including two periods within a 20ms RMSI transmission period;

when SS burst set periodicity =5 ms, SSB transmissions comprising four periods within a 20ms RMSI transmission period;

wherein the number of synchronization signal window groups in the RMSI transmission period includes at least one of: 1,2,4,8.

Wherein the position pattern of the synchronization signal window group in the RMSI transmission period includes at least one of the following:

position pattern 2: the synchronous signal window group is transmitted twice in the RMSI transmission period and is contained in a first field, a third field or a second field and a fourth field;

Wherein the resource pattern information of rate matching or skipping required for RMSI transmission in the RMSI transmission period includes at least one of the following:

Wherein the frame structure configuration information includes at least one of: the period of the frame structure, the configuration patterns of different time slot types in the period of the frame structure, and the subcarrier interval corresponding to the frame structure.

The transmission of at least one of the above information is additionally introduced into the PBCH, and the indication overhead of the information in the PBCH needs to be compressed without affecting the overall overhead of the PBCH, that is, the first system information and the other system information (second system information) in the PBCH are jointly encoded, and the indication overhead of the second system information is compressed.

One way is to define a constraint, and define a correspondence between the constraint and one or more parameter values in the second system information.

Wherein the second system information includes at least one of: synchronizing signal block subcarrier offset indication information; configuration information of a physical downlink control channel PDCCH of the RMSI; RMSI control resource set configuration information; RMSI physical downlink control channel searches for space configuration information.

Defining the limiting condition according to the position of the SSB where the PBCH is located in the RMSI transmission period and the duration of the synchronous signal window group according to the SS burst set period, wherein the duration of the synchronous signal window group is the duration of SSB in one transmission period; as shown in table 4, at least one of the following restrictions is defined:

The correspondence of the positions of the different 'constraints' and 'SSBs in the RMSI transmission period to the duration' of the synchronization signal window group under different SS burst set periods is given in table 4. For example, when the SS burst set period is greater than or equal to 20ms, the detected SSB belongs to the first half frame, and the SS burst set duration is less than or equal to a predefined threshold X, the constraint B is satisfied. That is, the terminal may determine the currently satisfied constraint according to the acquired SS burst set period information, the detected position information of the SSB in the RMSI transmission period, and the duration of the SS burst set.

TABLE 4 Table 4

In table 4, the first column (i.e., the first system information) may also be indicated by other information, such as the number of SS burst sets in the RMSI transmission period, or the location pattern of SS burst sets in the RMSI transmission period, or the resource pattern of rate matching or skipping required for RMSI transmission in the RMSI transmission period. According to the definition hereinbefore, there is a correspondence in table 5 between these parameters: i.e. the values of the individual parameters in the same row are equivalent. Therefore, when defining the constraint as described in table 4, the SS burst set period information may be replaced with any one of the other three information.

TABLE 5

In addition, due to the duration of SS Burst set, the subcarrier spacing (SCS) of SSB can be obtained by the current frequency range (F); alternatively, the maximum number (L) of SSBs within SS burst set may be obtained by SSB subcarrier spacing (SCS); for example, for the frequency band below 6GHz, SS burst duration is 2ms or less, equivalent to one of the following cases: "F is less than or equal to 3GHz, SCS=15 kHz or 30kHz"; alternatively, "F is greater than 3GHz and less than or equal to 6GHz, scs=30 kHz"; alternatively, "scs=30 khz, l=4 or 8"; alternatively, "scs=15khz, l=4". For the frequency band above 6GHz, SS burst set duration is 2.5ms or less, equivalent to scs=240 kHz.

Thus, the second column in Table 4 may also utilize the description in Table 6. I.e. the values of the individual parameters in the same row in table 6 are equivalent.

TABLE 6

Embodiments of the present invention will be described in detail below with specific examples.

Example 1

The embodiment describes a method for indicating resources that need to be rate matched or skipped during RMSI reception, and indicates, to a terminal, the resources that need to be rate matched or skipped during RMSI reception through the SS burst set period information, which is specifically described as follows:

Fig. 7 is a schematic diagram of a 20ms RMSI transmission period according to an embodiment of the present invention, which is divided into 4 fields, called a first field, a second field, a third field, and a fourth field, respectively, for convenience, in the 20ms RMSI transmission period as shown in fig. 7. The terminal can determine which half frame the current SSB belongs to by receiving the PBCH.

Specifically, the start of the RMSI transmission period is the start boundary of an even radio frame, such as radio frames 0,2,4, etc. A system frame number (system frame number, abbreviated as SFN) is indicated in the PBCH, and whether the current SSB belongs to a previous radio frame (even radio frame) or a later radio frame (odd radio frame) is judged through the parity of the SFN; further, whether the radio frame is the first half frame or the second half frame is determined according to the half frame indication in the PBCH. Further, the terminal can completely distinguish which half frame within 20ms the current SSB is in.

In this embodiment, the SS burst set periodicity information is jointly encoded with the PDCCH search space configuration information, where the joint encoding refers to that a plurality of pieces of information that are jointly encoded correspond to the same information indication field, and each value of the information indication field corresponds to a value combination of the plurality of pieces of information; the terminal determines the value of the group offset by judging the predefined condition according to the principle that PDCCH monitoring window avoids the time slot where the SSB is located as far as possible, predefines the condition corresponding to the value of the group offset, thereby saving the overhead for indicating the group offset and being used for indicating SS burst set periodicity information.

As shown in table 7, the following conditions (for a 6GHz band range or less) are predefined:

TABLE 7

The SS burst set period information is indicated in the RMSI PDCCH search space configuration information, and the terminal may further determine which constraint is satisfied under the corresponding SS burst set period by determining the relative position of the detected SSB in the 20ms RMSI transmission period (i.e., at which half frame), and the duration of the SS burst set.

As shown in Table 8, for different SS/PBCH burst set periods, RMSI PDCCH search space configurations are indicated, respectively, e.g., configuration index 0-4 is used to indicate RMSI PDCCH search space configurations of SS burst set periodicity +.20ms; configuration index 5-9 is used to indicate RMSI PDCCH search space configuration for SSburst set periodicity =10 ms; the configuration index10-14 is used to indicate the RMSI PDCCH search space configuration for SS burst set periodicity =5 ms. The RMSI PDCCH search space configuration of the last three columns in the table is merely an example.

TABLE 8

The PBCH still indicates RMSI PDCCH the search space configuration to the terminal with 4 bits while the terminal also obtains part SS burst set periodicity of the information. And then the half frame containing the SS burst set is obtained, and when receiving the RMSI, more accurate rate matching can be carried out on the SSB resource only in the half frame containing the SS burst set.

Taking PDCCH search space configuration index=1 as an example, the current SSB transmission period (SS burst set periodicity) is 20ms, i.e. SSB transmission only including 1 period in the 20ms RMSI transmission period; for example, the terminal determines that the current sfn= 0110000110, i.e., the odd radio frame, is indicated as the first field according to the detection reception of the SSB, and further determines that the SSB is configured in the first field of the 20ms RMSI transmission period. The current frequency of SSB belongs to the frequency range of less than or equal to 3GHz, L=4; and because the subcarrier interval of the SSB corresponding to the frequency band (frequency band) to which the SSB belongs is 15kHz, the duration of the SS burst set is 2ms (less than or equal to a predefined threshold 2 ms). Condition2 is satisfied, so 'o=2' is determined, i.e., the start point of the first RMSI PDCCH monitoring window is offset from the even radio frame start boundary by 2ms. Thereby determining the specific configuration of the RMSI PDCCH search space. Since the 20ms RMSI transmission period includes only 1 period of SSB transmission, and the RMSI PDCCH monitoring window corresponding to the first SSB has skipped all SSBs in the period, the RMSI PDCCH monitoring window corresponding to the subsequent SSB is offset backward from the first monitoring window by a predefined interval, and therefore, RMSI PDCCH monitoring window corresponding to all SSBs will not overlap with SSBs, and no rate-configured transmission of SSBs is required.

If the base station indicates PDCCH monitoring window that index=6 is configured, and the other conditions are unchanged, since SS burst set periodicity =10 ms, in addition to the SSB currently detected by the terminal located in the first field, there is also an SSB of the same duration in the third field, i.e. an SSB transmission comprising two periods within the 20ms RMSI transmission period, at this time, when RMSIPDCCH monitoring window maps to the SSB resource of the third field, the transmission of RMSI needs to be rate matched around the SSB resource.

Example 2

The embodiment describes another indication method of resources that need rate matching or skipping in RMSI reception, and specifically describes the following:

in this embodiment, the resource pattern information that is required to be rate-matched or skipped for RMSI transmission in the RMSI transmission period is jointly encoded with PDCCH search space configuration information; the terminal determines the value of the group offset by judging the predefined condition according to the principle that PDCCH monitoring window avoids the time slot where the SSB is located as far as possible, predefines the condition corresponding to the value of the group offset, thereby saving the overhead for indicating the group offset and being used for indicating SS burst set periodicity information.

As shown in table 9, the following conditions are predefined:

TABLE 9

The terminal can determine the duration of the SSB through the subcarrier spacing of the SSB and the frequency range to which the SSB belongs, and determine the relative position of the detected SSB in the 20ms RMSI transmission period (i.e., in which half frame) through the half frame timing indicated in the PBCH and the SFN (system frame number) information.

Specifically, the current frequency band belongs to a frequency range greater than 6GHz, and the maximum number of SSBs l=64 in one SS burst set period, fig. 8 is a schematic diagram of a time domain mapping pattern of SSBs according to an embodiment of the present invention, as shown in fig. 8, and according to the time domain mapping pattern of SSBs of 120kHz, the time domain mapping pattern of SSBs needs to occupy 5ms for 64 SSBs. Fig. 9 is a second schematic diagram of a time domain mapping pattern of SSBs according to an embodiment of the present invention, as shown in fig. 9, 64 SSBs need to occupy 2.5ms according to a time domain mapping pattern of 240kHz SSBs (as shown in fig. 6).

As shown in table 10, for different resource patterns, RMSI PDCCH search space configurations are indicated respectively, e.g., configuration index 0-4 is used to indicate RMSI PDCCH search space configuration under resource pattern 1; configuration index 5-9 is used to indicate RMSI PDCCH search space configuration under resource pattern 2; configuration index 10-14 is used to indicate RMSIPDCCH search space configuration under resource pattern 3. The RMSI PDCCH search space configuration of the last three columns in the table is merely an example.

Table 10

The PBCH still indicates RMSI PDCCH the search space configuration to the terminal with 4 bits, while the terminal also acquires the resource pattern information. And further, the resource position actually containing the SSB is obtained, and more accurate rate matching can be performed based on the position information when the receiving of the RMSI is performed.

Taking PDCCH search space configuration index=1 as an example, it is currently resource pattern 1, i.e. SSB transmission only including 1 period in a 20ms RMSI transmission period; for example, the terminal determines that the current sfn= 0110000110, i.e., the odd radio frame, is indicated as the first field according to the detection reception of the SSB, and further determines that the SSB is configured in the first field of the 20ms RMSI transmission period. The current frequency of the SSB belongs to a frequency range greater than 6GHz, L=64; and because the subcarrier interval of the SSB corresponding to the frequency band (frequency band) to which the SSB belongs is 120kHz, the duration of the SS burst set is 5ms (more than a predefined threshold of 2.5 ms). Condition3 is satisfied, and thus 'o=5' is determined, i.e., the start point of the first RMSI PDCCH monitoring window is offset from the even radio frame start boundary by 5ms. Thereby determining the specific configuration of the RMSI PDCCH search space. Since the 20ms RMSI transmission period includes only 1 period of SSB transmission, and the RMSI PDCCH monitoring window corresponding to the first SSB has skipped all SSBs in the period, the RMSI PDCCH monitoring window corresponding to the subsequent SSB is offset backward from the first monitoring window by a predefined interval, and therefore, RMSI PDCCH monitoring window corresponding to all SSBs will not overlap with SSBs, and no rate-configured transmission of SSBs is required.

If the base station indicates that PDCCH search space configuration index=6, and other conditions are unchanged, since the current resource pattern is configuration 2, besides the SSB currently detected by the terminal and located in the first half frame, there is also an SSB with the same duration in the third half frame, that is, an SSB transmission including two periods in a 20ms RMSI transmission period, at this time, when RMSI PDCCH monitoring window is mapped to the SSB resource in the third half frame, the transmission of RMSI needs to be rate matched around the SSB resource.

Example 3

in this embodiment, the resources that need rate matching or skipping when receiving RMSI are indicated by SS burst set periodicity information, and the SS burst set periodicity information is encoded jointly with PDCCH search space configuration information; that is, the terminal can determine whether SSBs of other periods are contained in the 20ms RMSI transmission period or not, and the specific locations of the SSBs of other periods by directly introducing SS burst set periodicity information in the RMSI PDCCH search space configuration and acquiring the period information and the timing information of the SSBs that have been detected. At this time, the terminal only needs to perform rate matching for RMSI transmission on the resources actually including SSB, and the time slot requiring rate matching is greatly reduced, so the offset (group offset, o=0 ') between the first RMSI PDCCH monitoring window start point and the start point boundary of the even radio frame (i.e. the radio frame satisfying SFN mod 2=0) may be predefined as a fixed value, for example, ' o=0 '. I.e. the number of rate matching slots is not reduced by configuring different 'O'. The saved overhead indicating the group offset is used for indicating SS burst set periodicity information.

As shown in table 11, for frequency ranges less than or equal to 6GHz, for different SS/PBCH burst set periods, respectively indicating RMSI PDCCH search space configurations, for example, configuration index 0-4 is used to indicate RMSI PDCCH search space configurations with SS burst set periodicity being equal to or greater than 20 ms; configuration index 5-9 is used to indicate RMSI PDCCH search space configuration for SS burst set periodicity =10 ms; the configuration index 10-14 is used to indicate the RMSI PDCCH search space configuration for SS burst set periodicity =5 ms. The RMSI PDCCH search space configuration of the last three columns in the table is merely an example.

TABLE 11

The PBCH still indicates RMSI PDCCH the search space configuration with 4 bits to the terminal, which half frames contain SSBs, similar to

embodiments

1,2, based on the period, and the half frame in which the detected SSB is located; further, the terminal determines the duration of the SSB through the subcarrier interval of the SSB and the frequency range to which the subcarrier interval belongs, that is, determines the number of slots in the field, which need to be rate-configured. When RMSI PDCCH monitoring window collides with SSB resources, rate matching around SSB resources is required for the reception of RMSI.

Taking PDCCH search space configuration index=1 as an example, the current SSB transmission period (SS burst set periodicity) is 20ms, i.e. SSB transmission only including 1 period in the 20ms RMSI transmission period; for example, the terminal determines that the current sfn= 0110000110, i.e., the odd radio frame, is indicated as the first field according to the detection reception of the SSB, and further determines that the SSB is configured in the first field of the 20ms RMSI transmission period. The current frequency of SSB belongs to the frequency range of less than or equal to 3GHz, L=4; and because the subcarrier interval of the SSB corresponding to the frequency band (frequency band) to which the SSB belongs is 15kHz, the duration of the SS burst set is 2ms. In the case of the predefined 'o=0', the offset of the start point of the first RMSI PDCCH monitoring window from the even radio frame start boundary is 0ms. Since the 20ms RMSI transmission period contains only 1 period of SSB transmission, RMSI PDCCH monitoring window overlapping SSB resources in the first 2ms will perform rate-matching based RMSI transmission according to the RMSI PDCCH search space configuration of the last three columns.

If the base station indicates that PDCCH search space configuration index=6, and other conditions are unchanged, since SS burst set periodicity =10 ms, besides the SSB currently detected by the terminal and located in the first half frame, there is also an SSB with the same duration and the same mapping pattern in the third half frame, that is, SSB transmission including two periods in the 20ms RMSI transmission period, at this time, when RMSI PDCCH monitoring window maps to SSB resources of the first half frame and the third half frame, the transmission of RMSI needs to be rate matched around the SSB resources.

Example 4

similar to embodiment 3, in this embodiment, the SS burst set periodicity information is jointly encoded with PDCCH search space configuration information; by fixedly configuring the group offset 'O' (e.g., 'o=0'), overhead for indicating the group offset is saved and used for indicating SS burst set periodicity information. This embodiment is directed to a frequency range greater than 6 GHz.

As shown in Table 12, for different SS/PBCH burst set periods, RMSI PDCCH search space configurations are indicated, respectively, e.g., configuration index 0-4 is used to indicate RMSI PDCCH search space configurations of SS burst set periodicity +.20ms; configuration index 5-9 is used to indicate RMSI PDCCH search space configuration for SS burst set periodicity =10 ms; the configuration index 10-14 is used to indicate the RMSI PDCCH search space configuration for SS burst set periodicity =5 ms. The RMSI PDCCH search space configuration of the last three columns in the table is merely an example.

Table 12

The PBCH still indicates RMSI PDCCH the search space configuration with 4 bits to the terminal, which, similar to example 1,2, can determine which fields contain SSBs based on the period, and the fields in which the detected SSBs are located; further, the terminal determines the duration of the SSB through the subcarrier interval of the SSB and the frequency range to which the subcarrier interval belongs, that is, determines the number of slots in the field, which need to be rate-configured. When RMSI PDCCH monitoring window collides with SSB resources, rate matching around SSB resources is required for the reception of RMSI.

Taking PDCCH search space configuration index=1 as an example, the current SSB transmission period (SS burst set periodicity) is 20ms, i.e. SSB transmission only including 1 period in the 20ms RMSI transmission period; for example, the terminal determines that the current sfn= 0110000110, i.e., the odd radio frame, is indicated as the first field according to the detection reception of the SSB, and further determines that the SSB is configured in the first field of the 20ms RMSI transmission period. The current frequency of the SSB belongs to a frequency range greater than 6GHz, L=64; and because the subcarrier interval of the SSB corresponding to the frequency band (frequency band) to which the SSB belongs is 120kHz, the duration of the SS burst set is 5ms. The offset of the start of the first RMSI PDCCH monitoring window from the even radio frame start boundary is fixed to 0ms (or the start of the first RMSI PDCCH monitoring window is aligned with the even radio frame (the radio frame satisfying SFN mod2=0) start boundary). Thereby determining the specific configuration of the RMSI PDCCH search space. Since the 20ms RMSI transmission period contains only 1 period of SSB transmission, all RMSI PDCCH monitoring window overlapping SSBs in the first 5ms need to make rate-configured transmissions around SSBs.

If the base station indicates that PDCCH search space configuration index=6, and other conditions are unchanged, since SS burst set periodicity =10 ms, besides the SSB currently detected by the terminal and located in the first half frame, there is also an SSB with the same duration and the same mapping pattern in the third half frame, that is, SSB transmission including two periods in the 20ms RMSI transmission period, at this time, when RMSIPDCCH monitoring window maps to SSB resources of the first half frame and the third half frame, the transmission of RMSI needs to be rate matched around the SSB resources.

Example 5

in the methods described in examples 1 to 4, when RMSI PDCCH monitoring window overlaps with SSB resources, transmission and reception of RMSI are performed by rate matching around SSB resources. RMSI PDCCH monitoring window, skipping the slot where the SSB is located; for example, RMSI PDCCH monitoring window is two slots, which may also be defined as non-consecutive slots, and fig. 10 is a schematic diagram of RMSI transmission according to an embodiment of the present invention, where, as shown in fig. 10, SS burst set has a duration of 4ms, and one PDCCH monitoring window corresponds to one slot on both sides of a slot where SSB is located.

By adopting the slot mode where the SSB is skipped, the SSB resource does not need to be subjected to rate matching for all RMSI transmission. The terminal determines the field actually containing the SSB in any of the manners described in embodiments 1 to 4, and the duration of the SSB in the field, and skips the corresponding slot.

RMSI PDCCH the configuration table of the search space can multiplex the configurations in examples 1 to 4. Only the strategy in RMSI transmission is changed from "rate matching SSB resources" to "skipping slots corresponding to SSB resources".

Example 6

The embodiment describes another method for indicating resources that need rate matching or skipping during RMSI reception, where the indicated information is frame structure configuration information, and specifically described as follows:

the transmission of RMSI may also be rate matched based on other reserved resources, or skipped. For example, in a 20ms RMSI transmission period, part of the time-frequency resources are uplink time-frequency resources, e.g., part of slots are uplink slots, which slots are incapable of transmitting RMSI. The cell-specific frame structure (Cell specific frame structure) configuration information or the terminal-specific frame structure (UE specific frame structure) configuration information (UL-DL-configuration-common or UL-DL-configuration-allocated) may indicate the relevant information to the terminal. Below we Cell specific frame structure describe by way of example the method is the same for UE specific frame structure configuration information.

The frame structure configuration information includes at least one of the following information: the frame structure may be configured as a configuration pattern of different slot types (the frame structure may be configured as a downlink transmission resource, an unknown resource, and an uplink transmission resource) in the frame structure period. Fig. 11 is a schematic diagram of a typical cell specific frame structure according to an embodiment of the present invention, as shown in fig. 11, which is a typical cell specific frame structure, that is, a period is 2ms, and 4 slots of 30kHz are included in a structural period, and are sequentially configured as a downlink slot, a special slot (downlink symbol+guard interval symbol), and an uplink slot. Wherein the special time slot refers to a time slot containing Guard Period (GP) symbols (e.g., 3 symbols) required for the conversion from downlink transmission to uplink transmission.

When SSBs are mapped under this structure, part of SSB resources may collide with the frame structure, as shown in fig. 11, SSBs 6 and 7 are mapped on the uplink slots in the frame structure, and at this time, the two SSBs cannot be transmitted. .

As can be seen from fig. 11, when the SS burst set period is 5ms, SSBs cannot be transmitted due to collision with the frame structure in two adjacent SS burst set periods are not the same, i.e., SSB indexes that cannot be transmitted in the previous period are 6,7. The SSB index that cannot be transmitted in the latter period is 2,3.

When the actual transmission of SSB position information in the SS burst set period is indicated to the terminal in a bitmap form through RMSI or UE specific RRC signaling, for the former period, the 8 bits are sequentially 00xxxxx (00 corresponds to SSB6 and 7 respectively and indicates that SSB6 and 7 are not actually transmitted; xxxxxx corresponds to SSB5,4,3,2,1,0 and x is determined to have a value of 0 or 1 according to the actual transmission state of SSB0-5, wherein 0 represents that the corresponding SSB is not actually transmitted and 1 represents that the corresponding SSB is actually transmitted); for the latter period, the 8bit indication information is xxx00xx (00 corresponds to SSB3 and 2 respectively, and represents that SSB3 and 2 are not actually transmitted; xxxx xx corresponds to SSB7,6,5,4,1,0 and x is determined to be 0 or 1 according to the actual transmission state of SSB0 and 1,4-7, wherein 0 represents that the corresponding SSB is not actually transmitted, and 1 represents that the corresponding SSB is actually transmitted).

However, since the actually transmitted SSB location information is semi-statically changed, i.e. the indication information for adjacent periods needs to be kept consistent, the above configuration is obviously not supported.

When guaranteeing the same actual transmission of SSB location information, it is assumed that the UE detects SSB in the first period, but an indication bit corresponding to SSB6 or 7 may be indicated that SSB is actually transmitted. Such collisions will inevitably occur when there is no integer multiple relationship between 'SS burst set periodicity (e.g.5 ms)' and 'frame structure period (e.g.2 ms)'. That is, the actual transmission SSB location indicated by SSB-transmitted or SSB-transmitted-SIB1 will fall on the uplink transmission resources configured by UL-DL-configuration-common (or UL-DL-configuration-allocated).

The following assumptions of the UE in receiving SS/PBCH block need to be defined: for a set of symbols configured for uplink transmission by a higher layer parameter (UL-DL-configuration-common or UL-DL-configuration-decoded) within one slot, the terminal is not expected to be received by SSB-transmitted or SSB-transmitted-SIB1 configured SSB.

Specifically, the terminal needs to explain the understanding of the 8bit indication information:

when determining the position of actually transmitting SSB in a certain SS burst set period, the terminal needs to identify the SSB index that conflicts with the frame structure configuration information (i.e. which SSBs cannot be transmitted due to the conflict with the frame structure configuration in this period, for example, the resources indicated as uplink slots by the frame structure cannot be used for transmitting SSBs, etc.);

In the actually transmitted SSB location information indicated in the RMSI or UE specific RRC signaling, the terminal considers bits corresponding to SSBs that collide with the frame structure configuration information as invalid bits; i.e. whether or not the bits indicate that SSBs are actually transmitted, the terminal considers that the SSBs are not actually transmitted;

for the base station side, the following actual transmission SSB location indication principle is followed: the actual transmission SSB position indicated by the base station via the parameters SSB-transmitted or SSB-transmitted-SIB1 is valid only for SSBs that do not collide with the uplink transmission resources of the higher layer parameter UL-DL-configuration-common or higher layer parameter UL-DL-configuration-dedication configuration.

Specifically, the actual transmission SSB location information indicated to the terminal by RMSI or UE specific RRC signaling (SSB-transmitted-SIB 1 or SSB-transmitted), where the indication information includes two types of indication information bits:

the first type indicates information bits: the corresponding SSB is allowed to be transmitted only in a part of SS burst set period without conflict with the frame structure configuration, and the first type of indication information bit is valid only for the SS burst set period in which the corresponding SSB is allowed to be transmitted;

The second type of indication information bits: its corresponding SSB is allowed to transmit without collision with the frame structure configuration in all SS burst set periods, the second type of indication information bits being valid for all SS burst set periods.

Specifically, in the configuration shown in fig. 11, for example, 8bit indication information xxxx xxxx corresponds to SSB0 to SSB7, respectively. Wherein, the 3 rd, 4 th, 7 th and 8 th bits belong to the second type of indication information bits, and are valid for the actual transmission conditions of SSB5, SSB4, SSB2 and SSB1 in two periods; the other bits belong to a first type of indication information bits, wherein the 5 th bit and the 6 th bit are only valid for the first period, namely indicate the actual transmission condition of SSB2 and SSB 3 in the first period; the 1 st and 2 nd bits are valid only for the second period, i.e. indicate the actual transmission of SSBs 6,7 in the first period.

The frame structure configuration and the collision situation with the SSB are only schematic, and for other frame structure configurations, other collision situations, indication methods are used.

In order to achieve the purpose of more accurately configuring RMSI transmission resources, cell specific frame structure configuration information and RMSI PDCCH search space information may be jointly encoded, so that the terminal can learn which resources need rate matching or skip. These resources that need to be skipped or rate matched include at least one of: guard interval symbols, uplink time slots, unknown symbols. Wherein, the unknown slot (unknown slot) refers to a slot in which the current network side does not determine the data transmission direction; unknown symbols (unknown symbols) refer to symbols whose data transmission direction is not determined by the current network side, and the unknown time slots and the unknown symbols can be partly or entirely rewritten into at least one of the following by subsequent signaling: uplink time slot, downlink time slot, uplink symbol, and downlink symbol. For example, several cell specific frame structure configurations are predefined (subordinate configurations are only examples, and the scheme is how to find an uplink slot by using the configuration information, and is not limited to a specific structure configuration of a cell specific frame structure):

Configuration 1: the DDDU configuration, namely 3 downlink slots+1 uplink slot structures, takes the structure as a cycle (for example, takes a 30kHz subcarrier interval as a reference, and takes a cycle of 2 ms) to appear in a circulating way;

configuration 2: the DU configuration, namely 1 downlink slot+1 uplink slot structure, takes the structure as a cycle (for example, takes a 30kHz subcarrier interval as a reference, and the cycle is 1 ms) to appear in a circulating way;

configuration 3: the DDUUU configuration, i.e. 2 downlink slots+3 uplink slots, is cyclically present with this as a period (e.g. with a 30kHz subcarrier spacing as reference, with a period of 2.5 ms).

The cell specific frame structure information and the PDCCH search space configuration information are jointly coded; that is, the cell specific frame structure information is directly introduced into the RMSI PDCCH search space configuration, and when the terminal determines RMSI PDCCH monitoring window the time domain position after obtaining the configuration information, the uplink slot under the corresponding configuration is skipped.

In this embodiment, the offset (group offset, o=0 ') between the first RMSI PDCCH monitoring window start point and the start point boundary of the even radio frame (i.e. the radio frame satisfying SFN mod2=0) may be predefined as a fixed value, for example, ' o=0 '. I.e. the number of rate matching slots is not reduced by configuring different 'O'. The saved overhead indicating the group offset is used for indicating the cell specific frame structure information.

As shown in table 13, for different cell specific frame structure configurations, RMSI PDCCH search space configurations are indicated, respectively, e.g., configuration index 0-4 is used to indicate RMSI PDCCH search space configuration under cell specific frame structure configuration 1; configuration index 5-9 is used to indicate RMSI PDCCH search space configuration under cell specific frame structure configuration 2; configuration index 10-14 is used to indicate RMSI PDCCH search space configuration under cell specific frame structure configuration 3. The RMSI PDCCH search space configuration of the last three columns in the table is merely an example.

TABLE 13

The PBCH still indicates RMSI PDCCH the search space configuration and the cell specific frame structure information to the terminal with 4 bits, and the terminal can determine which slots in 20ms RMSI PDCCH monitoring window are uplink slots according to the cell specific frame structure and skip. Fig. 12 is a schematic structural diagram of RMSI transmission according to an embodiment of the present invention, as shown in fig. 12, according to the current cell specific frame structure configuration (configuration 1), in the 20ms RMSI transmission period, there is an uplink slot of 30kHz at the end of every 2ms, and when RMSI PDCCH monitoring window encounters the uplink slot, this uplink slot will be skipped and the next slot is occupied.

Since RMSI PDCCH monitoring window contains multiple PDCCH transmission opportunities, the uplink slots can be contained within RMSI PDCCH monitoring window, i.e. RMSI PDCCH monitoring window still occupies two consecutive slots, but RMSI PDCCH will not transmit on the uplink slots. The terminal does not need to perform blind detection RMSI PDCCH on the uplink slot.

In this embodiment, since no relevant information for determining SS burst set position is indicated to the terminal, the terminal will assume SS burst set periodicity to be 5ms and the transmission of RMSI will rate match all the resources that may transmit SSB.

Example 7

The present embodiment describes a method for jointly encoding first system information and synchronization signal block subcarrier offset indication information.

The first system information is resource pattern information which is matched with or skipped by a rate required by RMSI transmission in a RMSI transmission period, and three resource patterns are defined as follows:

The subcarrier offset indication information of the synchronizing signal block needs to indicate 0-23 in the frequency band below 6GHz, and the total number of the subcarrier offset indication information is 24; as shown in table 14, the two combinations have 72 states in total, and therefore 7bit indication is required, and the index reservation is configured left.

TABLE 14

In order to save configuration overhead, some configuration combinations can be removed, so that the number of the configuration combinations is not more than 64, and the joint indication of the two information can be completed with 6 bits.

The subcarrier offset indication information of the synchronous signal block needs to indicate 0-11 in the frequency band above 6GHz, and the total number of the subcarrier offset indication information is 12; as shown in table 15, the two combinations have 36 states in total, and therefore a 6bit indication is required, leaving configuration index reservation.

TABLE 15

In order to save configuration overhead, some configuration combinations can be removed, so that the number of the configuration combinations is not more than 32, and the joint indication of two information can be completed with 5 bits.

In this application, features of various embodiments may be used in combination in one embodiment without conflict. Each example is merely a preferred embodiment of the present application.

Example 3

The embodiment also provides an information sending device, which is used for implementing the above embodiment and the preferred implementation manner, and is not described in detail. As used below, the term "module" may be a combination of software and/or hardware that implements a predetermined function. While the means described in the following embodiments are preferably implemented in software, implementation in hardware, or a combination of software and hardware, is also possible and contemplated. Fig. 13 is a block diagram of an information transmission apparatus according to an embodiment of the present invention, as shown in fig. 13, including:

a carrying module 132, configured to carry first system information in a physical broadcast channel PBCH in a manner of jointly encoding with second system information, where the first system information is used to indicate to a terminal resources that need to be rate-matched or skipped when receiving remaining minimum system information RMSI;

and a sending module 134, configured to send the PBCH to the terminal.

Optionally, the apparatus further comprises:

Optionally, the second system information includes at least one of:

SSB subcarrier offset indication information;

RMSI physical downlink control channel PDCCH configuration information.

the number of search spaces in a slot;

offset between adjacent PDCCH monitoring windows;

the starting symbol index of the search space within one slot.

It should be noted that each of the above modules may be implemented by software or hardware, and for the latter, it may be implemented by, but not limited to: the modules are all located in the same processor; alternatively, the above modules may be located in different processors in any combination.

Example 4

In this embodiment, an information receiving apparatus is further provided, and the apparatus is used to implement the foregoing embodiments and preferred embodiments, and will not be described in detail. As used below, the term "module" may be a combination of software and/or hardware that implements a predetermined function. While the means described in the following embodiments are preferably implemented in software, implementation in hardware, or a combination of software and hardware, is also possible and contemplated. Fig. 14 is a block diagram of an information receiving apparatus according to an embodiment of the present invention, as shown in fig. 14, including:

a receiving module 142, configured to receive a physical broadcast channel PBCH sent by a base station, where the PBCH carries first system information and second system information in a joint coding manner;

a determining module 144, configured to determine, according to the first system information, resources that need to be rate matched or skipped when receiving the remaining minimized system information RMSI.

Optionally, the second system information includes at least one of:

SSB subcarrier offset indication information;

RMSI physical downlink control channel PDCCH configuration information.

the number of search spaces in a slot;

offset between adjacent PDCCH monitoring windows;

the starting symbol index of the search space within one slot.

Example 4

An embodiment of the invention also provides a storage medium having a computer program stored therein, wherein the computer program is arranged to perform the steps of any of the method embodiments described above when run.

Alternatively, in the present embodiment, the above-described storage medium may be configured to store a computer program for performing the steps of:

S11, carrying first system information in a Physical Broadcast Channel (PBCH) in a mode of joint coding with second system information, wherein the first system information is used for indicating resources which need to be subjected to rate matching or skipping when receiving Residual Minimized System Information (RMSI) to a terminal;

and S12, the PBCH is sent to the terminal.

Alternatively, in the present embodiment, the above-described storage medium may be further configured to store a computer program for performing the steps of:

s21, receiving a Physical Broadcast Channel (PBCH) sent by a base station, wherein the PBCH carries first system information and second system information in a joint coding mode;

s22, determining resources which need to be subjected to rate matching or skipping when receiving the Residual Minimized System Information (RMSI) according to the first system information.

Alternatively, in the present embodiment, the storage medium may include, but is not limited to: a usb disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a removable hard disk, a magnetic disk, or an optical disk, or other various media capable of storing a computer program.

An embodiment of the invention also provides an electronic device comprising a memory having stored therein a computer program and a processor arranged to run the computer program to perform the steps of any of the method embodiments described above.

Optionally, the electronic device may further include a transmission device and an input/output device, where the transmission device is connected to the processor, and the input/output device is connected to the processor.

Alternatively, in the present embodiment, the above-described processor may be configured to execute the following steps by a computer program:

and S12, the PBCH is sent to the terminal.

Optionally, in this embodiment, the above processor may be further configured to execute the following steps by a computer program:

Alternatively, specific examples in this embodiment may refer to examples described in the foregoing embodiments and optional implementations, and this embodiment is not described herein.

It will be appreciated by those skilled in the art that the modules or steps of the invention described above may be implemented in a general purpose computing device, they may be concentrated on a single computing device, or distributed across a network of computing devices, they may alternatively be implemented in program code executable by computing devices, so that they may be stored in a memory device for execution by computing devices, and in some cases, the steps shown or described may be performed in a different order than that shown or described, or they may be separately fabricated into individual integrated circuit modules, or multiple modules or steps within them may be fabricated into a single integrated circuit module for implementation. Thus, the present invention is not limited to any specific combination of hardware and software.

The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An information transmission method, comprising:

sending the PBCH to the terminal;

wherein the second system information includes at least one of: SSB subcarrier offset indication information, RMSIPDCCH configuration information; the RMSIPDCCH configuration information includes: RMSI control resource set configuration information and RMSIPDCCH search space configuration information; the RMSI control resource set configuration information includes at least one of: the RMSI controls the frequency domain location of the resource set, the RMSI controls the bandwidth of the resource set, the RMSI controls the duration of the resource set, and the RMSI controls the multiplexing pattern between the resource set and the SSB.

2. The method of claim 1, wherein prior to carrying the first system information in the PBCH by jointly encoding with the second system information, the method further comprises:

setting a limiting condition met by the second system information, and setting a corresponding relation between the limiting condition and one or more parameter values in the second system information; or,

3. The method of claim 2, wherein the setting the constraint comprises one of:

setting the limiting conditions according to the first system information, the position of the synchronization signal/physical broadcast channel block SSB where the PBCH is located in the RMSI transmission period, and the duration of a synchronization signal window group, where the duration of the synchronization signal window group is the duration of transmitting SSBs in one synchronization signal window group period, and the synchronization signal window group includes a plurality of SSBs;

4. The method of claim 2, wherein the setting the correspondence between the constraint and the one or more parameter values in the second system information includes:

5. The method of claim 1, wherein the RMSI PDCCH search space configuration information comprises at least one of:

the number of search spaces in a slot;

offset between adjacent PDCCH monitoring windows;

the starting symbol index of the search space within one slot.

6. The method according to any one of claims 1 to 4, wherein the first system information comprises at least one of: the method comprises the steps of period information of a synchronous signal window group, quantity information of the synchronous signal window group in an RMSI transmission period, position pattern information of the synchronous signal window group in the RMSI transmission period, resource pattern information of RMSI transmission required rate matching or skipping in the RMSI transmission period and frame structure configuration information.

7. The method of claim 6, wherein the period information of the synchronization signal window group includes at least one of: and the value range information of the period of the synchronous signal window group is the value information of the period of the synchronous signal window group.

8. The method of claim 6, wherein the number of synchronization signal window groups within the RMSI transmission period includes at least one of: 1,2,4,8.

9. The method of claim 6, wherein the pattern of locations of the set of synchronization signal windows within the RMSI transmission period includes at least one of:

10. The method of claim 6, wherein the resource pattern information for rate matching or skipping required for RMSI transmission within the RMSI transmission period includes at least one of:

11. The method of claim 6, wherein the frame structure configuration information comprises at least one of: and the frame structure is arranged in a period, the configuration patterns of different time slot types are arranged in the period of the frame structure, and the sub-carrier intervals corresponding to the frame structure are arranged.

12. The method according to any one of claims 1 to 4, wherein the resources comprise at least one of: resources occupied by the synchronous signal block, a guard interval symbol, an uplink time slot, an unknown time slot and an unknown symbol.

13. The method of claim 12, wherein the step of determining the position of the probe is performed,

when the RMSI overlaps with the resource needing to be subjected to rate matching or skipping, the RMSI performs rate matching-based transmission around the resource needing to be subjected to rate matching or skipping; or when the RMSI overlaps with the resources needing to be rate-matched or skipped, the RMSI skips the resources needing to be rate-matched or skipped.

14. An information receiving method, comprising:

determining resources which need to be subjected to rate matching or skipped when receiving the Residual Minimized System Information (RMSI) according to the first system information;

15. The method of claim 14, wherein the RMSI PDCCH search space configuration information comprises at least one of:

The number of search spaces in a slot;

offset between adjacent PDCCH monitoring windows;

the starting symbol index of the search space within one slot.

16. The method according to any one of claims 14 to 15, wherein the first system information comprises at least one of: the method comprises the steps of period information of a synchronous signal window group, quantity information of the synchronous signal window group in an RMSI transmission period, position pattern information of the synchronous signal window group in the RMSI transmission period, resource pattern information of RMSI transmission required rate matching or skipping in the RMSI transmission period and frame structure configuration information.

17. The method of claim 16, wherein the period information of the synchronization signal window group includes at least one of: and the value range information of the period of the synchronous signal window group is the value information of the period of the synchronous signal window group.

18. The method of claim 16, wherein the number of synchronization signal window groups within the RMSI transmission period includes at least one of: 1,2,4,8.

19. The method of claim 16, wherein the pattern of locations of the set of synchronization signal windows within the RMSI transmission period includes at least one of:

20. The method of claim 16, wherein the resource pattern information for rate matching or skipping required for RMSI transmission within the RMSI transmission period includes at least one of:

21. The method of claim 16, wherein the frame structure configuration information comprises at least one of: and the frame structure is arranged in a period, the configuration patterns of different time slot types are arranged in the period of the frame structure, and the sub-carrier intervals corresponding to the frame structure are arranged.

22. The method according to any one of claims 14 to 15, wherein the resources comprise at least one of: resources occupied by the synchronous signal block, a guard interval symbol, an uplink time slot, an unknown time slot and an unknown symbol.

23. The method of claim 22, wherein the step of determining the position of the probe is performed,

when the RMSI and the resource needing to be subjected to rate matching or skipping are received based on the rate matching, the RMSI receives the resource needing to be subjected to rate matching or skipping; or when the RMSI and the resource needing rate matching or skipping are used, the RMSI skips the resource needing rate matching or skipping.

24. An information transmitting apparatus, comprising:

A sending module, configured to send the PBCH to the terminal;

25. The apparatus of claim 24, wherein the apparatus further comprises:

the setting module is used for setting the limiting conditions met by the second system information and setting the corresponding relation between the limiting conditions and one or more parameter values in the second system information; or,

26. The apparatus of claim 25, wherein the setup module is further configured to perform one of:

setting the limiting conditions according to the first system information, the position of the synchronization signal/physical broadcast channel block SSB where the PBCH is located in the RMSI transmission period, and the duration of a synchronization signal window group, wherein the duration of the synchronization signal window group is the duration of transmitting SSB in one period, and the synchronization signal window group comprises a plurality of SSBs;

Defining the limiting condition according to the first system information, the position of the SSB where the PBCH is located in the RMSI transmission period, the subcarrier interval of the SSB and the maximum number of the SSB;

and defining the limiting condition according to the first system information, the position of the SSB where the PBCH is located in the RMSI transmission period, the subcarrier interval of the SSB and the frequency range to which the SSB belongs.

27. An information receiving apparatus, comprising:

a determining module, configured to determine, according to the first system information, resources that need to be rate-matched or skipped when receiving remaining minimum system information RMSI;

wherein the second system information includes at least one of: SSB subcarrier offset indication information, RMSI PDCCH configuration information; the RMSI PDCCH configuration information includes: RMSI control resource set configuration information and RMSIPDCCH search space configuration information; the RMSI control resource set configuration information includes at least one of: the RMSI controls the frequency domain location of the resource set, the RMSI controls the bandwidth of the resource set, the RMSI controls the duration of the resource set, and the RMSI controls the multiplexing pattern between the resource set and the SSB.

28. A storage medium having a computer program stored therein, wherein the computer program is arranged to perform the method of any of claims 1 to 13, 14 to 23 when run.

29. An electronic device comprising a memory and a processor, characterized in that the memory has stored therein a computer program, the processor being arranged to run the computer program to perform the method of any of the claims 1 to 13, 14 to 23.