CN111066357A

CN111066357A - Information transmission system

Info

Publication number: CN111066357A
Application number: CN201780094789.3A
Authority: CN
Inventors: 刘星; 帕特里克·斯韦德曼; 郝鹏; 毕峰
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2017-09-11
Filing date: 2017-09-11
Publication date: 2020-04-24
Anticipated expiration: 2037-09-11
Also published as: CN111066357B; CN116915372A; WO2019047228A1

Abstract

A method of wireless communication, comprising: logically grouping transmission resources available for transmission of synchronization signal/physical broadcast channel blocks (SSBs) into a plurality of SSB groups; and sending information about the location of the actually transmitted SSB in a message comprising: a first field indicating the number of SSB groups; and a second field indicating a pattern of the actually transmitted SSBs within each SSB group containing the actually transmitted SSBs; wherein the index of the first group containing the actually transmitted SSBs depends on the system parameters.

Description

Information transmission system

Technical Field

This document relates to systems, devices and methods for wireless communication.

Background

Efforts are currently underway to define next generation wireless communication networks that provide greater deployment flexibility, support multiple devices and services, and different technologies for efficient bandwidth utilization. To make better use of bandwidth, techniques such as using multiple antennas for transmission and/or reception are also used.

Disclosure of Invention

This document describes, among other things, techniques for communicating and using timing information related to a wireless communication network.

In one example aspect, a method for wireless communication includes: logically grouping transmission resources available for transmission of synchronization signal/physical broadcast channel blocks (SSBs) into a plurality of SSB groups; and sending information about the location of the actually transmitted SSB in a message comprising: a first field indicating the number of SSB groups; and a second field indicating a pattern of the actually transmitted SSBs within each SSB group containing the actually transmitted SSBs; wherein the index of the first set of SSBs containing the SSBs actually transmitted depends on the system parameters.

In another example aspect, a method of wireless communication is disclosed. The method comprises the following steps: receiving information about the location of an actually transmitted synchronization signal/physical channel broadcast block (SSB) in a message, the message comprising: a first field indicating the number of SSB groups; and a second field indicating a pattern of SSBs within each SSB group containing actually transmitted SSBs; wherein all transmission resources available for transmitting SSBs are logically grouped into SSB groups; and determining an index of a first SSB group containing the actually transmitted SSBs using the system parameters.

In yet another example embodiment, a method of wireless communication is disclosed. The method comprises the following steps: logically grouping transmission resources available for transmission of synchronization signal/physical broadcast channel blocks (SSBs) into a plurality of SSB groups; and sending information about the location of the actually transmitted SSB in a message comprising: a first field indicating a pattern of an SSB group including an actually transmitted SSB; and a second field indicating the number of SSBs within each SSB group containing the actually transmitted SSBs; wherein the index of the first SSB within each SSB group containing the actually transmitted SSB depends on the system parameters.

In yet another example embodiment, a method of wireless communication is disclosed. The method comprises the following steps: receiving information about the location of an actually transmitted synchronization signal/physical channel broadcast block (SSB) in a message, the message comprising: a first field indicating a pattern of an SSB group including an actually transmitted SSB; and a second field indicating the number of SSBs within each SSB group containing the actually transmitted SSBs; wherein the index of the first SSB within each SSB group containing the actually transmitted SSB depends on the system parameters; and determining an index of the first SSB within each SSB group containing the actually transmitted SSB using the system parameters.

In yet another example embodiment, a method of wireless communication is disclosed. The method comprises the following steps: allocating transmission resources available for transmitting synchronization signal/physical broadcast channel blocks (SSBs) to a plurality of SSB transmissions; and sending information about the location of the actually transmitted SSB in a message comprising: a first field indicating the number of SSBs actually transmitted; and a second field indicating an interval between two adjacent actually transmitted SSBs; wherein the index of the first actually transmitted SSB depends on the system parameters.

In yet another example embodiment, a method of wireless communication is disclosed. The method comprises the following steps: receiving information about the location of an actually transmitted synchronization signal/physical broadcast channel block (SSB) in a message, the message comprising: a first field indicating the number of SSBs actually transmitted; and a second field indicating an interval between two adjacent actually transmitted SSBs; wherein the index of the SSB of the first actual transmission depends on the system parameters; and determining an index of the SSB of the first actual transmission using the system parameter.

In yet another example aspect, a wireless communications apparatus is disclosed that includes a memory and a processor. The memory is configured to store code executable by the processor. The processor is configured to read the code and implement the methods described herein.

In another example aspect, the various methods described herein may be embodied as processor-executable code and stored on a computer-readable program medium.

The details of one or more implementations are set forth in the accompanying drawings, and the description below. Other features will be apparent from the description and drawings, and from the claims.

Drawings

Fig. 1 illustrates an example scheme for transmitting a set of Synchronization Signal (SS) bursts (burst sets) in a multi-beam wireless system.

Fig. 2A illustrates an example bitmap for indicating information transport blocks in a wireless network.

Fig. 2B illustrates another example bitmap for indicating information transport blocks in a wireless network.

Fig. 2C illustrates another example bitmap for indicating information transport blocks in a wireless network.

Fig. 2D illustrates another example bitmap for indicating information transport blocks in a wireless network.

Fig. 3A illustrates another example bitmap for indicating information transport blocks in a wireless network.

Fig. 3B illustrates another example bitmap for indicating information transport blocks in a wireless network.

Fig. 4 illustrates another example bitmap for indicating information transport blocks in a wireless network.

Fig. 5 shows an example of an information transmission scheme in which cell-level information and beam-level information are transmitted through a wireless channel.

Fig. 6 is a flow diagram illustrating an example method for wireless communication.

Fig. 7 is a flow diagram illustrating an example method for wireless communication.

Fig. 8 is a flow diagram illustrating an example method for wireless communication.

Fig. 9 is a flow diagram illustrating an example method for wireless communication.

Fig. 10 is a flow diagram illustrating an example method for wireless communication.

Fig. 11 is a flow diagram illustrating an example method for wireless communication.

Fig. 12 is a block diagram of an example embodiment of a wireless communication device.

Fig. 13 is a block diagram of an example of a wireless communication system.

Like reference symbols in the various drawings indicate like elements.

Detailed Description

Section headings are used in this document to aid in ease of understanding and do not limit the scope of the disclosed technology to that section. A user equipment or terminal as used herein may be an electronic device capable of wireless transmission. Examples include mobile phones, laptops, tablets, loT devices, and the like.

Wireless communication products and services are evolving explosively as radio technology continues to advance. For growth, the wireless industry is seeking to address the problem of limited spectrum available for communication. As the demand for bandwidth increases, conventional commercial communications that use primarily the spectrum around 300MHz may not be able to meet the ever-increasing demand unless new technologies are introduced to improve spectrum usage.

In future wireless communications, communications may be conducted using carrier frequencies higher than those used by 4 generation (4G) communication systems. The new frequency band may be, for example, in the range of 28GHz, 45GHz, 70GHz, etc. Signal transmission at high frequencies suffers from significant propagation losses even through the atmosphere (e.g., due to absorption of energy by air molecules such as oxygen molecules). In addition, the presence of rain or other weather phenomena may also affect the available bandwidth at these frequencies. However, since the carrier frequency corresponding to high frequency communication has a shorter wavelength, more antenna elements can be accommodated per unit area, and more antenna elements means that beam forming can be used to improve antenna gain. Such techniques may thus ensure that the wireless network may provide significant throughput even at high frequencies.

Using the beamforming method, the transmitter can concentrate the transmitted energy in a particular direction while the energy is small or 0 in other directions, i.e., each beam has its own direction. Thus, each beam may cover only a specific direction of the terminal. The base station may thus provide full range coverage using a large number of transistors capable of transmitting beams in tens or even hundreds of directions. In some current networks, the measurement and identification of the initial beam direction is made during the initial access of the terminal to the network. To facilitate this, synchronization signal/physical broadcast channel blocks (SSB, SS/PHCH blocks) are used. In each SSB, synchronization signals, system information, and corresponding demodulation reference signals (DMRS) (optionally including beam/port measurement reference signals and other signals) may be transmitted on multiple beams or ports depending on the number of radio frequency chains of the base station. The terminal may perform measurements using the synchronization signals, acquire system information, and may perform measurements on the optional reference signals to identify preferred downlink transmit beams or ports and acquire cell basic information, access configuration information, etc. to access the network. In some wireless systems, multiple SSB resources are defined within a synchronous broadcast transmission period (or burst phase period), the time domain locations of which are fixed or predefined and with which the base station can transmit SSB signals. The base station may select some or all of the SSB resources for actual transmission of the SSBs. The base station may poll the terminal to identify the preferred base station side transmit beam/port used by the terminal.

The location information of the actually transmitted SSB may also be used for rate matching of the terminal at the time of data reception. For example, to this end, resources allocated to SSB transmission are removed on predetermined downlink data transmission resources, and the remaining resources are matched and received at the corresponding rates. On the other hand, the actual transmission of SSB information may also be used to indicate SSB-based measurements. Therefore, it is useful for a terminal that notifies the actually transmitted SSB location information.

Fig. 1 shows an example scenario in which a set of SS bursts includes multiple SSB transmissions, where each transmission corresponds to a different spatial direction or beam in which a terminal may be present in the network, as shown by an example radiation pattern below the SSB location.

In the prior art, for higher bandwidths above 6GHz, more SSB resources (e.g., 64) are used due to greater transmission loss. The base station may therefore send the SSB multiple times to ensure detection by the terminal, even if some transmission loss is incurred. Thus, the base station can make a trade-off between resource utilization and ensure that the terminal receives the SSB. For example, a subset of the total possible 64 potential SSB resources may actually be used for SSB transmissions. To help inform that SSB is actually being used and at the same time save on the informing overhead, some rules are defined for each cell, such as SSB grouping instructions, etc. The terminals in all cells will operate according to the same rules to determine the SSB locations and commands actually transmitted. One operational problem with this approach is: in a synchronous network, the actual transmissions of SSBs in different cells will suffer a large probability of collision, and interference between neighboring cells will reduce the SSB synchronization signal and degrade physical broadcast channel detection performance. In response to this problem, the current 3GPP standards do not propose an effective solution.

Some solutions to this problem have been proposed recently. These solutions make it possible to locate the position of the actual transmission SSB in the frequency band above 6 GHz. In the schemes described below, alt.2, alt.3, alt.4 refer to the selection of the starting index. For example, the start index in alt.2 and alt.4 refers to the SSB index in the SS/PBCH block group, and the start index in alt.3 refers to the SS/PBCH block group index. In these embodiments, the default first SSB resource is defined as the starting index of the SSB that is actually transmitted, with the result that the SSB collision probability will actually increase, thereby affecting the channel reception performance. According to alt.5, 6-bit signaling is used to indicate different SSB start indices that introduce a specific signaling overhead.

Above 6GHz, the indication is in compressed form and the indication method is selected from the following alternatives.

Alternative 1 (alt.l): Group-Bitmap + Bitmap in Group

Groups are defined as logical groupings of consecutive SS/PBCH blocks.

The bitmap in a group may indicate that the SS/PBCH is actually transmitted within a group, each group having the same pattern of SS/PBCH block transmissions, and the group-bitmap may indicate that the group is actually transmitted.

For example, the transmission would be [8] + [8] bits with 8 groups and 8 SS/PBCH blocks per group.

Alt.2: group-bitmap + number of SS/PBCH blocks actually transmitted in a group (with fixed start index of SS/PBCH blocks)

Groups are defined as consecutive SS/PBCH blocks.

The group-bitmap may indicate that actually a group is transmitted, the SS/PBCH blocks within the group are logically contiguous, the number of actually transmitted SS/PBCH blocks indicates how many logically contiguous SS/PBCH blocks are actually transmitted starting from the first index, and the number is typically applied to all transmitted groups.

For example, 8 + 3 bits in the case of 8 groups and 8 SS/PBCH blocks per group.

Alt.3: bitmap in group + number of groups actually transferred (with fixed group start index).

Groups are defined as consecutive SS/PBCH blocks.

The bitmap in a group may indicate which SS/PBCH blocks are actually transmitted within a group, each group having the same pattern of SS/PBCH block transmissions, and the number of groups actually transmitted indicates how many consecutive groups are actually transmitted starting from the first group.

For example, 8 + 3 bits in the case of 8 groups and 8 SS/PBCH blocks per group.

Alt.4: group-bitmap + number of SS/PBCH blocks actually transmitted in each group

Groups are defined as consecutive SS/PBCH blocks.

The group-bitmap may indicate which group is actually transmitted, the SS/PBCH blocks within a group are logically contiguous, and the number of SS/PBCH blocks actually transmitted for each group indicates how many logically contiguous SS/PBCH blocks are actually transmitted starting from the first index.

The minimum is [8] + [3] bits and the maximum is [8] + [3] bits in the case of 8 groups and 8 SS/PBCH blocks per group.

Alt.5: number of actually transmitted SS/PBCH blocks + starting index + interval between two consecutive SS/PBCH blocks

For example, the [6] + [6] + [6] bits are transmitted.

Alt.6: group-bitmap

Groups are defined as consecutive SS/PBCH blocks.

The group-bitmap may indicate which group is actually transmitted and virtually all SS/PBCH blocks within the transmitted group are transmitted.

For example, 8 bits in the case of 8 groups and 8 SS/PBCH blocks per group.

Among other things, techniques for sending time domain location information for control signal transmissions from a base station are provided.

Various methods are described below with respect to the system. There are L resources defined as potential SS/PBCH block (SSB) transmission resources. For example, L-64. The gNB may select the portion of the resources that are actually transmitted. In some embodiments, the actual transmitted SSB location (e.g., time of transmission) may be indicated to the UE by an example of the following method:

the method comprises the following steps:

the potential SSBs are logically divided into a plurality of SSB groups. The bitmap is used to indicate the set of SSBs actually transmitted.

The number of actually transmitted SSBs in each SSB group containing the actually transmitted SSBs may also be indicated to the UE. In the depicted example, different sets of SSBs share the same pattern of SSBs that are actually transmitted. In general, however, different sets of SSBs may have different patterns.

Then, system parameters, such as the cell ID of the cell in which the UE is operating, will be further introduced for calculating the starting index of the actually transmitted SSB in each SSB group containing the actually transmitted SSB (e.g., the index of the first actually transmitted SSB in each SSB group containing the actually transmitted SSB). In general, other system parameters known a priori by the UE (e.g., a portion of the MAC address of the base station) may be used.

For example, consider the potential SSB with N-8 in the SSB group and a total of 64 potential SSBs as an example. As shown in fig. 2A, 8 bits are used to indicate the actually transmitted SSB groups in the form of a bitmap, e.g., 10100011, meaning that there are 4 SSB groups (first, third, seventh, and eighth SSB groups) that will contain the actually transmitted SSBs.

The other 3 bits are used to indicate the number of SSBs actually transmitted within the SSB group. For example, 011 means that M ═ 3 SSBs will actually be transmitted in one group.

Then, the UE calculates a start index of the SSB actually transmitted in the SSB group. For example, the UE calculates a start index of the SSB actually transmitted in the group using 'Ncell _ ID modX'. Where, 'Ncell _ ID' denotes a cell ID, and 'X' denotes the number of different start indexes of SSBs actually transmitted in a group. In this embodiment, 'Ncell _ ID' is 580, and in case of actually transmitting 3 SSBs in one group, there are 'X ═ 6' different starting indexes of the SSBs actually transmitted in the SSB group, i.e., the candidate starting indexes of the SSBs in the SSB group are { SSB0, SSB2, SSB3, SSB4, SSB5 }. The value of 'X' is calculated using the following formula: X-N-M + 1-8-3 + 1-6. As described above, N represents the number of potential SSBs in the SSB group, and M represents the number of SSBs actually transmitted in the SSB group.

580mod 6 — 4, which means that the starting index of the SSBs actually transmitted in each actually transmitted SSB group is SSB4, i.e., the fifth SSB and consecutive 3 SSBs (i.e., SSBs 4, SSBs 5, SSBs 6) in each group will actually be transmitted.

In summary, the indication information of the SSB position actually transmitted is '10100011011', and 11 bits in total. The first 8 bits are used to indicate, in a bitmap manner, SSB groups containing actually transmitted SSBs, and the lower (last) three bits are used to indicate the number of actually transmitted SSBs per SSB group containing actually transmitted SSBs. In an alternative embodiment, the position of the information bits may be changed and may be known to the UE without limiting the above manner.

According to the above description, the SSB of the actual transmission is: { SSB4, SSB5, SSB6, SSB20, SSB21, SSB22, SSB52, SSB53, SSB54, SSB60, SSB61, SSB62 }.

For determining the value of 'X' above (the number of different starting indices of SSBs actually transmitted in a group), the following assumptions have been made: the contiguous SSB resources are occupied by the SSBs actually transmitting within one SSB group. In this case, the value of 'X' is a function of 'N' and 'M', i.e., X ═ N-M +1, where N denotes the number of potential SSBs in the SSB group and M denotes the number of SSBs actually transmitted in the SSB group.

The following method may also be used to determine the value of 'X':

the method A comprises the following steps: 'X' is equal to 'N'. In this case, the start index may also be via the formula' N_{cell_ID}mod X'. When there are not enough consecutive SSB resources in the SSB group, the initial SSB resources continue to be mapped in the same SSB group. As shown in FIG. 2D, assume N_{cell_ID}582 and X ═ N ═ 8, then N_{cell_ID} mod X582 mod 8 6, i.e., the starting SSB is the seventh SSB resource (the starting index of group 0 is 6). Assume that there are 3 SSBs actually transmitted in one SSB group. The three SSBs are SSB6, SSB7, SSB 0.

The method B comprises the following steps: 'X' is equal to 'N'. In this case, the start index may also be via the formula' N_{cell_ID}mod X'. When there are not enough consecutive SSB resources in the SSB group, the initial SSB resources continue to be mapped in the next SSB group. As shown in FIG. 2B, assume N_{cell_ID}582 and X ═ N ═ 8, then N_{cell_ID} mod X582 mod 8 6. I.e., the starting SSB is the seventh SSB resource (starting index of set 0 is 6). Assume that there are 3 SSBs actually transmitted in one SSB group. The three SSBs are SSB6, SSB7, SSB 8.

When the SSB group is the last group, then the initial SSB resources of the first SSB group will also be mapped. As shown in FIG. 2C, assume N_{cell_ID}582 and X ═ N ═ 8, then N_{cell_ID} mod X582 mod 8 6. I.e., the starting SSB is the seventh SSB resource (SSB group 7 starting index is 62). Assume that there are 3 SSBs actually transmitted in one SSB group. The three SSBs are SSB62, SSB63, SSB 0.

The method 2 comprises the following steps:

the potential SSBs are divided into SSB groups. The bitmap is used to indicate the SSBs actually transmitted in the SSB group. The number of SSB groups containing the actually transmitted SSBs may also be indicated to the UE. Different sets of SSBs share the same pattern of SSBs actually transmitted.

The cell ID (or another system parameter) will then also be used to calculate the starting index of the SSB group that is actually transmitted.

Embodiments may use as an example N-8 potential SSBs in the SSB group and a total of 64 potential SSBs. This gives a set of 8 SSBs with P. As shown in fig. 3A, 8 bits are used to indicate the SSB location actually transmitted in the SSB group in a bitmap manner, e.g., 10100011, meaning that there are actually 4 SSBs to be transmitted, e.g., the first, third, seventh, and eighth SSBs (including the bit of entry "1").

The other 3 bits are used to indicate the number of SSB groups containing the SSBs actually transmitted. For example, 100 means Q-4 SSB groups containing real transmitted SSBs. Different sets of SSBs share the same pattern of SSBs actually transmitted.

Then, the UE calculates the start index of the SSB group actually transmitted. For example, the UE uses' N_{cell_ID}mod Y' calculates the starting index of the SSB group that is actually transmitted. Wherein' N_{cell_ID}' denotes a cell ID, and ' Y ' denotes the number of different start indexes of an actually transmitted SSB group. In this embodiment,' N_{cell_ID}'is 581, and in case that 4 SSB groups are actually transmitted, there are 5' different start indexes of the actually transmitted SSB groups, i.e. the candidate start indexes of the SSB groups are { SSB group 0, SSB group 1, SSB group 2, SSB group 3, SSB group 4 }. The value of 'Y' is calculated using the following formula: Y-P-Q + 1-8-4 + 1-5. As described above, P denotes the total number of SSB groups, and Q denotes the number of SSB groups containing the actually transmitted SSB.

Thus, 581mod 5 is 1, meaning that the starting index of the SSB group actually transmitted is SSB group 1, i.e., the second SSB group, and 4 consecutive SSB groups (i.e., SSB group 1, SSB group 2, SSB group 3, SSB group 4) will be actually transmitted.

The indication of the actual transmitted SSB position in this case is '10100011100', for a total of 11 bits. In this case, the least significant 3 bits combined with the cell ID, which are used to indicate the number of SSB groups containing the actual transmitted SSBs, may be used to determine which SSB groups contain the actual transmitted SSBs. The first 8 bits are used to indicate which SSBs are actually transmitted in each SSB group containing the actually transmitted SSBs. The position of the information bits may vary without limiting the manner described above.

In the above example, the SSB of the actual transmission is: { SSB8, SSB10, SSB14, SSB15, SSB16, SSB18, SSB22, SSB23, SSB24, SSB26, SSB30, SSB31, SSB32, SSB34, SSB38, SSB39 }.

For determining the value of the above-mentioned 'Y' (which refers to the number of different starting indices of the SSB group actually transmitted), the following assumptions have been made: the contiguous set of SSBs is occupied by the SSBs actually transmitted. In this case, the value of 'Y' is a function of 'P' and 'Q', i.e., Y ═ P-Q +1, where 'P' denotes the number of SSB groups, and 'Q' denotes the number of SSB groups containing the actually transmitted SSBs.

The following method may also be used to determine the value of 'Y':

the method A comprises the following steps: 'Y' is equal to 'P'. In this case, the starting index of the SSB Group containing the SSBs of the actual transmission may also be via the formula' N_{cell_ID}mod Y'. When there are not enough consecutive SSB groups, the initial SSB group continues to be mapped. As shown in FIG. 3B, assume N_{cell_ID}582 and Y P8, then N_{cell_ID} mod Y582 mod 8 6. I.e., the starting SSB group is the seventh SSB group (starting index is SSB group 6). Assume that there are 5 SSB groups containing the SSBs actually transmitted. Then the 5 SSB groups are SSB group 6, SSB group 7, SSB group 0, SSB group 1, SSB group 2.

The method 3 comprises the following steps:

the number of SSBs actually transmitted + the starting index + the interval between two adjacent SSBs. The number of SSBs actually transmitted is used to indicate the SSBs actually transmitted.

The interval may also be communicated to the UE for indicating the amount of SSB resources between two adjacent actually transmitted SSBs. The cell ID (or another system parameter) will then be used to calculate the starting index of the SSB of the actual transmission.

For example, a total of 64 potential SSBs may be used as an example embodiment. As shown in fig. 4, 6 bits are required to indicate the number of SSBs actually transmitted, e.g., 001011, meaning that 11 SSBs will be actually transmitted.

Another 6 bits are needed to indicate Gap (interval) between two consecutive transmission SSBs. E.g., 000010, means that 2 SSBs will be skipped between two adjacent actually transmitted SSBs. It is worth pointing out that the interval here indicates the interval of a plurality of potential SSB Resources (Resources), but not absolute time, and although the interval between two adjacent actually transmitted SSBs is two SSBs, the absolute time interval is not necessarily equal. As shown in fig. 4, the absolute time interval between the first actual transmitted SSB (SSB1) and the second actual transmitted SSB (SSB4) is different from the absolute time interval between the second actual transmitted SSB (SSB4) and the third actual transmitted SSB (SSB 7).

On the receiving side, the UE calculates the starting index of the actual transmission SSB. Using' N_{cell_ID}mod Z' computes the starting index of the actual transmit SSB group. The value of Z may be predefined in the specification or configured to the UE through signaling. E.g. N_{cell_ID}581 and Z4. So 581mod 4 equals 1, meaning that the start index of the actual transmission SSB is SSB1, i.e. the second SSB.

The SSB of the actual transmission is: { SSB1, SSB4, SSB7, SSB10, SSB13, SSB16, SSB19, SSB22, SSB25, SSB28, SSB3 }.

The method 4 comprises the following steps:

potential SSBs are divided into SSB groups. The actual transmitted SSB location is indicated by the number of SSB groups containing the actual transmitted SSB and the number of SSBs within each group containing the actual transmitted SSB.

Wherein the index of the first group containing the actually transmitted SSBs depends on the system parameters, or the index of the first SSBs within each SSB group containing the actually transmitted SSBs depends on the system parameters, or both the index of the first SSBs within each SSB group containing the actually transmitted SSBs and the index of the first group containing the actually transmitted SSBs depend on the system parameters.

In the case where the index of the first actual transmitted SSB within each SSB group containing an actual transmitted SSB depends on system parameters, the method for determining the index of the first actual transmitted SSB within each SSB group containing an actual transmitted SSB is consistent with method 1. The index of the first SSB group containing the actually transmitted SSBs may then be predefined in the specification or configured to the UE by signaling.

In the case where the index of the first SSB group containing the actually transmitted SSBs depends on system parameters, the method for determining the index of the first SSB group containing the actually transmitted SSBs is consistent with method 2. The index of the first SSB within the SSB group containing the actually transmitted SSB may then be predefined in the specification or configured to the UE by signaling.

The case where the index of the first actual transmitted SSB within each SSB group containing the actual transmitted SSB and the index of the first SSB group containing the actual transmitted SSB both depend on system parameters is a combined method of determining the index of the first SSB group containing the actual transmitted SSB described in method 2 and determining the index of the first actual transmitted SSB within each SSB group containing the actual transmitted SSB described in method 1.

It should be noted in example 1, example 2, and example 3 that the cell index is used to implicitly indicate the starting index information, or that the system may pre-define the starting index (e.g., default nth SSB as the starting SSB or similar), or pre-define signaling instructions to determine the starting index (e.g., 6-bit signaling explicitly indicating which SSB is the starting SSB, etc.).

The method 5 comprises the following steps:

both the IDLE and CONNECTED UEs may be informed of the one or more locations of the actually transmitted SSBs by one or more of: physical Broadcast Channel (PBCH), Remaining Minimum System Information (RMSI), other system information (other SI), UE Level RRC signaling (UE-specific RRC signaling). The relevant indication information may be used to configure SSB-based mobility measurements to the terminal or to perform rate matching at the terminal data reception. For example, since the downstream data is not mapped to the resources occupied by the actually transmitted SSB, the terminal will perform rate matching-based data reception around the resources actually occupied by the SSB.

When the network side wishes to indicate to the terminal the location of the actually transmitted SSB information, it may use different schemes for indicating such information through different signaling/channels. The one or more locations of the SSBs of the indicated transmission may be the same or different. Embodiment example 4 uses a combination of potential instructions.

In this embodiment, the one or more location information of the SSB actually transmitted is indicated by the RMSI and UE-specific RRC signaling.

The information indicated in the RMSI may be used by the IDLE terminal and the CONNECTED terminal. When the number of RMSI information bits is limited, methods 1 to 3 described in this document may be considered as "compression methods". Since the UE-specific RRC signaling may accommodate a large number of bits, the one or more location information of the transmitted SSB may be indicated by the UE-specific RRC signaling in a full bitmap manner. The full bitmap is used to indicate that each potential SSB resource corresponds to a 1-bit, respectively, indicating whether an independent potential SSB is actually transmitted. At this time, when there are 64 potential SSBs, 64 bits are needed to indicate.

In this embodiment, one of

embodiments

1, 2 and 3 may be used in the RMSI to indicate 'compressed' instruction information, for example, in the manner of example method 2, this information is '10100011100', meaning SSB8, SSB10, SSB14, SSB15, SSB16, SSB18, SSB22, SSB23, SSB24, SSB26, SSB30, SSB31, SSB32, SSB34, SSB38, SSB39 are actually transmitted. This information can be seen as the set of SSBs actually transmitted in the cell by each transmitting and receiving node (TRP). For example, in a multi-TRP cell scenario, the RMSI is used to indicate that the SSBs are actually transmitted at the cell level (i.e., the SSBs actually transmitted by the cell), and the SSBs actually transmitted by each TRP belonging to a cell are a subset of the SSBs actually transmitted by that cell. First, all TRPs belonging to the cell indicate the same information, i.e. '10100011100', in their corresponding RMSI. And then each TRP belonging to that cell will also indicate the SSB information actually transmitted by itself (i.e. the TRP level at which the SSB was actually transmitted) through UE-specific RRC signaling. The full bitmap of SSBs within the SSB set actually transmitted at the cell level will be used for UE-specific RRC signaling indication.

In this case, the number of bits of the UE-specific RRC signaling is equal to or greater than the number of SSBs in the SSB set actually transmitted at the cell level.

For UE-specific RRC signaling, the following form of RRC parameters (i.e., information elements) may be defined. The number of CHOICEs per (4, 8, 16, 64) is only an example:

BitmapOfActuallyTransmittedSSblocks CHOICE{

BitmapOfActuallyTransmittedSSblocks4 BIT STRING(SIZE(4))，

BitmapOfActuallyTransmittedSSblocks8 BIT STRING(SIZE(8))，

BitmapOfActuallyTransmittedSSblocks16 BIT STRING(SIZE(16))，

BitmapOfActuallyTransmittedSSblocks64 BIT STRING(SIZE(64))，}

when the number of actually transmitted SS blocks is 4 or less as indicated by RMSI, then the first option may be used in UE-specific RRC signaling. The second option may be used in UE-specific RRC signaling when the number of actually transmitted SS blocks, as indicated by RMSI, is greater than 4 but equal to or less than 8. Similarly, when the number of actually transmitted SS blocks as indicated by RMSI is greater than 8 but equal to or less than 16, a third option may be used in UE-specific RRC signaling, etc. This means that the meaning of the bitmap in the UE-specific RRC signaling depends directly on the indication in the RMSI.

As shown in fig. 5, the RMSI indicates that 16 cell-level actually transmitted SSBs are shown in a grid (cross-hatched pattern), and that the cell has no actually transmitted SSBs are not shown. In this case, the number of bits of the UE-specific RRC signaling is equal to the number of SSBs actually transmitted by the cell. The TRP will select CHOICE 3, i.e. BIT STRING (SIZE (16)) indicating the SSB of the TRP level actually transmitted. For the actual transmitted SSB at TRP level (as shown in the black box resource): for TRP1, the 16-bit full bitmap '0111010101010101' also indicates which SSB was actually transmitted by TRP 1; for TRP2, the 16-bit full bitmap '1110111011101110' also indicates which SSB was actually transmitted by TRP 2. In this way, the UE-specific RRC signaling indicates that only 16 bits are needed. The method described in this embodiment can significantly reduce the signaling overhead compared to a full bitmap of all 64 potential SSBs.

For the case where the number of SSBs actually transmitted at the cell level indicated by the RMSI is not equal to the number given in the CHOICE IE, for example, there are 12 SSBs actually transmitted at the cell level indicated in the RMSI. Because 8<12<16, TRP will also select CHOICE 3, i.e. BIT STRING (SIZE (16)), to indicate the SSB of the TRP level actual transmission. A portion of the 16 bits (e.g., the first 12 bits) will be used to indicate the location of the SSB where the TRP level is actually transmitted. The remaining bits (e.g., the last 4 bits) will be invalidated.

It should be understood that technical features in various embodiments may be used in one embodiment without conflict, as described in this document. Each embodiment is merely an example embodiment of the corresponding disclosed technology.

As described, various embodiments and techniques herein provide time domain positioning information transmission methods and systems. Some embodiments include:

[1] use of a cell ID implicit instruction to start an index start index, wherein the start index comprises one of: SSB group SSB Start SSB index, SSB Start index, SSB group Start index. (methods described in method 1, method 2 and method 3)

[2] Various instructions are given to collectively indicate the actual transmission method of the SSB.

Some embodiments may provide two actual indication SSB positioning indication information: first indication information (cell-level actually transmitted SSB) and second indication information (TRP-level actually transmitted SSB), wherein the first indication information is indicated by broadcast information, and the broadcast information includes PBCH, RMSI, other SI, and the broadcast information is represented by a 'compressed method' (as shown in

methods

1, 2, and 3).

The second indication information is indicated by UE-specific RRC signaling and the second indication information is indicated in a full bitmap pattern. The full bitmap is an indication of the full bitmap within the SSB of the actual transmission indicated by the first indication information.

Example advantages

The disclosed techniques may be used to implement embodiments that provide time domain positioning information from one network device (e.g., a base station) to another network device (terminal). By this scheme, the collision probability of actual transmissions of synchronization signal blocks between cells can be reduced, compared to current methods that require signaling to start indexing, so that interference between cells can be reduced. Thus, the signaling overhead in the UE-level RRC signaling command pattern is effectively reduced by combining the various SSB indication patterns.

Fig. 6 is a flow diagram illustrating an example method 600 for wireless communication. The method 600 comprises: logically grouping transmission resources available for transmission of synchronization signal/physical broadcast channel blocks (SSBs) into a plurality of SSB groups (602); and transmitting (604) information about the location of the actually transmitted SSBs in a message comprising a first field indicating the number of SSB groups and a second field indicating the pattern of the actually transmitted SSBs within each group, wherein the index of the first group containing the actually transmitted SSBs depends on the system parameters.

Fig. 7 is a flow diagram illustrating an example method 700 for wireless communication. The method 700 comprises: receiving (702) information about the location of the actually transmitted synchronization signal/physical channel broadcast block (SSB) in a message comprising a first field indicating the number of SSB groups and a second field indicating a pattern of SSBs within each SSB group containing the actually transmitted SSB, wherein all transmission resources available for transmitting SSBs are logically grouped into SSB groups; and determining (704) an index of a first SSB group containing the actually transmitted SSBs using the system parameters.

Some example embodiments of messages used in method 600 or method 700 are described with respect to fig. 3A and 3B.

Fig. 8 is a flow diagram illustrating an example method 800 for wireless communication. The method 800 comprises: logically grouping transmission resources available for transmission of synchronization signal/physical broadcast channel blocks (SSBs) into a plurality of SSB groups (802); and sending (804) information about the location of the actually transmitted SSBs in a message comprising a first field indicating a pattern of SSB groups containing the actually transmitted SSBs and a second field indicating the number of SSBs within each SSB group containing the actually transmitted SSBs, wherein the index of the first SSB within each SSB group containing the actually transmitted SSB depends on the system parameters.

Fig. 9 is a flow diagram illustrating an example method 900 for wireless communication. The method 900 includes: receiving (902) information about a location of an actually transmitted synchronization signal/physical channel broadcast block (SSB) in a message, the message comprising a first field indicating a pattern of SSB groups containing actually transmitted SSBs and a second field indicating a number of SSBs within each SSB group containing actually transmitted SSBs, wherein an index of a first SSB within each SSB group containing actually transmitted SSBs depends on a system parameter; and determining (904) an index of a first SSB within each SSB group containing the actually transmitted SSB using the system parameters.

Some example embodiments of the message used in method 600 or method 700 are described with respect to fig. 2A-2D.

Fig. 10 is a flow diagram illustrating an example method 1000 for wireless communication. The method 1000 includes: allocating (1002) transmission resources available for transmitting synchronization signal/physical broadcast channel blocks (SSBs) to a plurality of SSB transmissions; and sending (1004) information about the location of the actually transmitted SSBs in a message comprising a first field indicating the number of actually transmitted SSBs and a second field indicating the interval between two adjacent actually transmitted SSBs, wherein the index of the first actually transmitted SSB depends on a system parameter.

Fig. 11 is a flow diagram illustrating an example method 1100 for wireless communication. The method 1100 comprises: receiving (1101) information about a location of an actually transmitted synchronization signal/physical broadcast channel block (SSB) in a message, the message comprising a first field indicating a number of actually transmitted SSBs and a second field indicating an interval between two adjacent actually transmitted SSBs, wherein an index of a first actually transmitted SSB depends on a system parameter; and determining (1103) an index of the SSB of the first actual transmission using the system parameters.

Some example embodiments of messages used in method 600 or method 700 are described with respect to fig. 4.

In some embodiments, a method of wireless communication may comprise: sending first information about the actually transmitted SSB in a message using a method recited in any of method 600, method 800, and method 1000; and sending second information about the actually transmitted SSB in another message using the full bitmap of the actually transmitted SSB indicated in the first information.

In some embodiments, a method of wireless communication may comprise: receiving a message as set forth in any of method 600, method 800, or method 1000; carrying first information about a synchronization signal/physical broadcast channel block (SSB) actually transmitted; and receiving another message carrying a full bitmap of the actually transmitted SSBs indicated in the first information.

Some example embodiments of messages used in the above method are described with reference to fig. 5.

In some embodiments, the system parameter in the above methods 600 through 1100 may be a cell-specific unique identifier, such as a cell _ id or a medium access address (MAC) address or another unique identifier of a base station. In some embodiments, the SSB groups described with respect to methods 600 through 1100 may all have the same number of SSBs. Alternatively, at least some of the SSB groups may have a different number of SSBs.

Fig. 12 is a block diagram of an example of a wireless communication apparatus 1001. The apparatus 1001 includes: a processor 1010 that may be configured to implement one of the techniques described herein, transceiver electronics 1015 that may transmit signals or receive signals using one or more antennas 1020, and one or more memories 1005 that may be used to store instructions and/or data storage that may be executed by the processor 1010.

Fig. 13 illustrates an example wireless communication network 1150. Network 1100 includes a base station BS 1102 and a multi-user device 1106 that may communicate with each other over a transmission medium 1104. Transmissions from BS 1102 to device 1106 are commonly referred to as downlink transmissions or downlinks. Transmissions from device 1106 to BS 1102 are commonly referred to as uplink transmissions or uplinks. The transmission medium 1104 is typically a wireless (air) medium. BS 1102 can also be communicatively coupled with other base stations or other devices in the network via a backhaul or access network connection 1112.

It should be appreciated that a number of techniques are disclosed for indicating the transmission resources from a set of transmission resources actually used (specified for carrying information from a sending device to one or more receiving devices). While SSB is used as an example of such information, the described methods may be used to indicate and carry other information between a base station and one or more user terminals. For example, in some embodiments, whether a bitmap or code division multiplexing is used to transmit a block of information may be constructed and transmitted using the disclosed techniques for control information (such as reference signal location). For example, the disclosed techniques may be used to indicate the actual used transmission resources for control information (including information common at the cell level and information specific to each TRP). The control information may be grouped into control information blocks, and the actual transmitted control information block from all possible control information block transmissions may be indicated by the sending device and received and determined by the receiving device using any of the techniques described with respect to fig. 2A-5. It will also be appreciated that the disclosed techniques may also provide for a reduction in the total number of bits used to transmit this information.

The embodiments and other embodiments, modules, and functional operations described in this document may be implemented in digital electronic circuitry, or in computer software, firmware, or hardware, including the structures disclosed in this document and their structural equivalents, or in combinations of one or more of them. The disclosed embodiments and other embodiments may be implemented as one or more computer program products, i.e., one or more modules of computer program instructions encoded on a computer-readable medium (for execution by, or to control the operation of, data processing apparatus). The computer readable medium can be a machine-readable storage device, a machine-readable storage substrate, a memory device, a composition of matter effecting a machine-readable propagated signal, or a combination of one or more of them. The term "data processing apparatus" encompasses all apparatus, devices, and machines for processing data, including by way of example a programmable processor, a computer, or multiple processors or computers. The apparatus can include, in addition to hardware, code discussed to create an execution environment for a computer program, e.g., code that constitutes processor firmware, a protocol stack, a database management system, an operating system, or a combination of one or more of them. A propagated signal is an artificially generated signal, e.g., a machine-generated electrical, optical, or electromagnetic signal, that is generated to encode information for transmission to suitable receiver apparatus.

A computer program (also known as a program, software application, script, or code) can be written in any form of programming language, including compiled or interpreted languages, and it can be deployed in any form, including as a stand-alone program or as a module, component, subroutine, or other unit suitable for use in a computing environment. The computer program does not necessarily correspond to a file in a file system. A program can be stored in a portion of a file that holds other programs or data (e.g., one or more scripts stored in a markup language file), in a single file dedicated to the program in question, or in multiple coordinated files (e.g., files that store one or more modules, sub programs, or portions of code). A computer program can be deployed to be executed on one computer or on multiple computers that are located at one site or distributed across multiple sites and interconnected by a communication network.

The processes and logic flows described in this document can be performed by one or more programmable processors implementing one or more computer programs to perform functions by operating on input data and generating output. The processes and logic flows can also be performed by, and apparatus can also be implemented as, special purpose logic circuitry, e.g., an FPGA (field programmable gate array) or an ASIC (application-specific integrated circuit).

Processors suitable for the implementation of a computer program include, by way of example, both general and special purpose microprocessors, and any one or more processors of any kind of digital computer. Generally, a processor will receive instructions and data from a read-only memory or a random access memory or both. The essential elements of a computer are a processor for executing instructions and one or more memory devices for storing instructions and data. Generally, a computer will also include, or be operatively coupled to receive data from or transfer data to, or both, one or more mass storage devices (e.g., magnetic, magneto-optical disks, or optical disks). However, a computer need not have such devices. Computer-readable media suitable for storing computer program instructions and data include all forms of non-volatile memory, media and memory devices, including by way of example semiconductor memory devices (e.g., EPROM, EEPROM, and flash memory devices); magnetic disks (e.g., internal hard disks or removable disks); magneto-optical disks; and CD ROM and DVD-ROM hard disks. The processor and the memory can be supplemented by, or incorporated in, special purpose logic circuitry.

While this document contains many specifics, these should not be construed as limitations on the scope of the invention as claimed or of what may be claimed, but rather as descriptions of features specific to particular embodiments. Certain features that are described in this document in the context of separate embodiments can also be implemented in combination in a single embodiment. Conversely, various features that are described in the context of a single embodiment can also be implemented in multiple embodiments separately or in any suitable subcombination. Furthermore, although features may be described above as acting in certain combinations and even initially claimed as such, one or more features from a claimed combination can in some cases be excised from the combination, and the claimed combination may be directed to a subcombination or variation of a subcombination. Similarly, while operations are depicted in the drawings in a particular order, this should not be understood as requiring that such operations be performed in the particular order shown or in sequential order, or that all illustrated operations be performed, to achieve desirable results.

Only a few examples and embodiments are disclosed. Variations, modifications and enhancements to the examples and embodiments described, as well as other embodiments, may be made based on the disclosure.

Claims

1. A method of wireless communication, comprising:

logically grouping transmission resources available for transmission of synchronization signal/physical broadcast channel blocks (SSBs) into a plurality of SSB groups; and

sending information about the location of the actually transmitted SSB in a message comprising: a first field indicating the number of SSB groups; and a second field indicating a pattern of actual transmitted SSBs within each SSB group containing the actual transmitted SSBs; wherein the index of the first set of SSBs containing the SSBs actually transmitted depends on the system parameters.

2. A method of wireless communication, comprising:

receiving information about the location of an actually transmitted synchronization signal/physical channel broadcast block (SSB) in a message, the message comprising: a first field indicating the number of SSB groups; and a second field indicating a pattern of SSBs within each SSB group containing actually transmitted SSBs; wherein all transmission resources available for transmitting SSBs are logically grouped into SSB groups; and

the index of the first SSB group containing the actually transmitted SSBs is determined using the system parameters.

3. A method of wireless communication, comprising:

sending information about the location of the actually transmitted SSB in a message comprising: a first field indicating a pattern of an SSB group including an actually transmitted SSB; and a second field indicating the number of actual transmitting SSBs within each SSB group containing the actual transmitting SSBs; wherein the index of the first SSB within each SSB group containing the actually transmitted SSB depends on the system parameters.

4. A method of wireless communication; it includes:

receiving information on the location of an actually transmitted synchronization signal/physical channel broadcast block (SSB) in a message comprising: a first field indicating a pattern of an SSB group including an actually transmitted SSB; and a second field indicating the number of actual transmitting SSBs within each SSB group containing the actual transmitting SSBs; wherein the index of the first SSB within each SSB group containing the actually transmitted SSB depends on the system parameters; and

the index of the first SSB within each SSB group containing the actually transmitted SSB is determined using the system parameters.

5. A method of wireless communication, comprising:

allocating transmission resources available for synchronization signal/physical broadcast channel block (SSB) transmissions to a plurality of SSB transmissions; and

sending information about the location of the actually transmitted SSB in a message comprising: a first field indicating the number of SSBs actually transmitted; and a second field indicating an interval between two adjacent actually transmitted SSBs; wherein the index of the first actually transmitted SSB depends on the system parameters.

6. A method of wireless communication, comprising:

transmitting information about the location of an actually transmitted synchronization signal/physical broadcast channel block (SSB) in a message, the message comprising: a first field indicating the number of SSBs actually transmitted; and a second field indicating an interval between two adjacent actually transmitted SSBs; wherein the index of the first actually transmitted SSB depends on the system parameters; and

the index of the first actually transmitted SSB is determined using the system parameters.

7. A method of wireless communication, comprising:

sending information about the location of the actually transmitted SSB in a message comprising: a first field indicating the number of SSB groups; and a second field indicating the number of actually transmitted SSBs within each group containing actually transmitted SSBs; wherein a first index of a first SSB group containing actually transmitted SSBs depends on system parameters, or a second index of a first SSB within each SSB group containing actually transmitted SSBs depends on system parameters, or both the first index and the second index depend on system parameters.

8. A method of wireless communication, comprising:

receiving information about the location of an actually transmitted synchronization signal/physical channel broadcast block (SSB) in a message, the message comprising: a first field indicating the number of SSB groups containing SSBs actually transmitted; and a second field indicating the number of SSBs within each SSB group containing the actually transmitted SSBs; wherein all transmission resources available for transmitting SSBs are logically grouped into SSB groups; and

using the system parameters to determine: a first index of a first SSB group containing actually transmitted SSBs, or a second index of a first SSB within each SSB group containing actually transmitted SSBs, or both the first index and the second index.

9. A method of wireless communication, comprising:

sending first information about the actually transmitted SSB in a message using the method of any of claims 1, 3 or 5; and

sending second information about the actually transmitted SSB in another message using the full bitmap of the actually transmitted SSB indicated in the first information.

10. A method of wireless communication, comprising:

receiving a message as claimed in any one of claims 1, 3 or 5, the message carrying first information on an actually transmitted synchronization signal/physical broadcast channel block (SSB); and

receiving another message carrying a complete bitmap of the SSBs of the actual transmission indicated in the first information.

11. The method of any one of claims 1 to 10, wherein the system parameter is a cell identity.

12. The method of any of claims 1-10, wherein each SSB group comprises an equal number of SSBs.

13. The method of claims 1 to 8, wherein the pattern of SSBs within each SSB group is the same.

14. The method of claims 1-8, wherein the index of the first SSB depends on a modulus value of the system parameter.

15. A computing device configured to implement the method of any of claims 1 to 14.

16. A computer program product comprising a computer readable program medium code stored thereon which, when executed by a processor, causes the processor to carry out the method of any one of claims 1 to 14.