WO2019214670A1 - Method and apparatus for determining time domain location information - Google Patents

Abstract

Disclosed are a method and apparatus for determining time domain location information. The method for determining time domain location information comprises: determining a correlation between node attribute information and time domain locations of synchronization signal blocks; and determining, according to node attribute information of a node and the correlation, the time domain location of a synchronization signal block sent by the node.

Description

Method and device for determining time domain location information

The present application claims priority to Chinese Patent Application No. 20 181 044 845 7.7 filed on May 11, 2018, the entire disclosure of which is hereby incorporated by reference.

Technical field

The present application relates to the field of wireless communication technologies, and in particular, to a method and apparatus for determining time domain location information.

Background technique

With the continuous advancement of radio technology, a variety of radio services have emerged, and the spectrum resources supported by the radio service are limited. In the face of increasing demand for bandwidth, the traditional commercial communication mainly uses 300MHz to 3GHz. The spectrum resources between them show extremely tight conditions and are no longer able to meet the needs of future wireless communications. The history of mobile communications shows that cell splitting, greater bandwidth, and higher spectrum efficiency are the three pillars of system capacity improvement.

The fourth generation (4G) communication system obtains cell splitting gain through a Heterogeneous Network (HetNet). In the HetNet network, a low-power transmission point (TP) is flexibly and sparsely deployed within the coverage area of a macro cell eNodeB or eNB, forming a macro cell and a small cell (Small). Multi-layer network composed of Cell). HetNet can not only improve the flexibility of cell splitting and system capacity while ensuring coverage, but also share the service pressure of the macro cell and expand the coverage of the macro cell. In the 3GPP release10 phase relay (Relay) technology, a relay node (Relay Node, RN for short) is connected to the base station by wireless to implement the backhaul, and provides services to the downlink terminal in the identity of the “base station”. In this two-hop network, due to factors such as RN self-interference, duplex mode, etc., "the backhaul link between the RN and the base station" and the "Acess link between the RN and the terminal" Reuse by time division. In the current fifth-generation (5th-Generation, 5G) wireless communication system standardization discussion, the integrated access and backhaul (IAB) technology is proposed, which is expected to support multi-hop in 5G wireless communication systems. The internet.

Compared with 4G systems and earlier communication systems, in the future fifth-generation (5G) wireless communication systems, higher carrier frequencies will be used for communication, such as 28GHz, 45GHz, etc., which have the freedom of high-frequency channels. The transmission loss is large, it is easy to be absorbed by oxygen, and it is greatly affected by rain attenuation, which seriously affects the coverage performance of high-frequency communication systems. In order to ensure the coverage of high-frequency communication and LTE (Long Term Evolution) system coverage The SINR (Signal to Interference plus Noise Ratio) needs to ensure the antenna gain of high frequency communication. Since the carrier frequency corresponding to high-frequency communication has a shorter wavelength, it can ensure that more antenna elements can be accommodated per unit area, and more antenna elements mean that beamforming can be used to improve the antenna gain, thereby ensuring Coverage performance of high frequency communication.

After the beamforming method, the transmitting end can concentrate the transmitting energy in a certain direction, and the energy is small or absent in other directions, that is, each beam has its own directivity, and each beam can only cover To a terminal in a certain direction, the transmitting end, that is, the base station needs to transmit multiple beams to complete the full coverage.

In the related art, the initial beam direction is generally measured and identified during the initial access of the terminal. Using the structure shown in FIG. 1, each grid is defined as a synchronization signal/physical broadcast channel block (SS (Synchronization). Signal, Synchronization Signal)/PBCH (Physical Broadcast Channel) block, in each synchronization signal/physical broadcast channel block, according to the number of base station radio frequency chains, the synchronization signal can be transmitted on multiple beams or ports. The system information and the corresponding Demodulation Reference Signal (DMRS), optionally including a transmit beam/port measurement reference signal. The terminal identifies the preferred downlink transmit beam or port by measuring the synchronization signal, acquiring the system information, and measuring the optional measurement reference signal, and acquires the basic information of the cell and accesses the configuration information, thereby accessing the network.

In a synchronous broadcast transmission period (or SS/PBCH burst set periodicity), a plurality of synchronization signals/physical broadcast channel block resources are defined, and these synchronization signals/physical broadcast channel blocks are defined. The time domain location of the resource is fixed, and the base station may select some or all of these resources for actually transmitting the synchronization signal/physical broadcast channel block, and transmitting the base station side transmit beam/port wheel within a period of one SS/PBCH burst set Query once for the terminal to measure the preferred beam or port and implement downlink synchronization with the network.

For a multi-hop network under IAB technology, such as the two-hop network shown in FIG. 2, where a node having a wired backhaul link with the core network is called an IAB donor (or an IAB host base station), the IAB donor can obtain the downlink. The data or the uplink data is sent to the core network. A site that is connected wirelessly to an IAB donor (or to its upper node) is called an IAB node. Since the IAB node does not have a direct link to the core network, its interaction with the core network needs to be forwarded one or more times, and finally implemented by the IAB donor.

In order to realize the discovery of neighboring nodes, the IAB node needs to measure the reference signals sent by the IAB donor and the neighboring IAB nodes. Therefore, how to implement the discovery and measurement of neighboring nodes in the IAB network is a problem to be considered.

Summary of the invention

The technical problem to be solved by the embodiments of the present invention is to provide a method and a device for determining time domain location information, which can avoid resource conflicts when a node in a multi-hop network transmits a synchronization signal block, thereby realizing discovery of neighboring nodes by detecting a synchronization signal block. .

An embodiment of the present invention provides a method for determining time domain location information, including:

Determining a correspondence between node attribute information and a time domain position of the synchronization signal block;

Determining a time domain location of the synchronization signal block sent by the node according to the node attribute information of the node and the correspondence.

An embodiment of the present invention provides a time domain location information determining apparatus, including:

Corresponding relationship determining module, configured to determine a correspondence between node attribute information and a time domain location of the synchronization signal block;

The time domain location determining module is configured to determine a time domain location of the node to send the synchronization signal block according to the node attribute information of the node and the correspondence.

An embodiment of the present invention provides a time domain location information determining apparatus, including:

a memory, a processor, and a time domain location information determining program stored on the memory and operable on the processor, wherein the time domain location information determining program is implemented by the processor to implement the time domain location information determination The steps of the method.

An embodiment of the present invention provides a computer readable storage medium, where the computer readable storage medium stores a time domain location information determining program, and the time domain location information determining program is implemented by the processor to implement the time domain location information determining method. A step of.

Compared with the related art, a method and apparatus for determining time domain location information provided by an embodiment of the present invention determines a correspondence between node attribute information and a time domain location of a synchronization signal block, according to node attribute information of the node and the corresponding The relationship determining the time domain position of the node to send the synchronization signal block, the technical solution of the embodiment of the present invention can effectively avoid the problem that the adjacent node cannot be detected by the SSB detection caused by the transmission of the synchronization signal block (SSB) conflict between the nodes, and even The node can use SSB to realize the discovery and measurement of neighboring nodes, avoiding the introduction of other reference signals to increase the configuration complexity, and avoiding the extra resource overhead caused by transmitting other reference signals.

DRAWINGS

1 is a schematic diagram of a synchronization signal/physical broadcast channel window period in the related art;

2 is a schematic diagram of a multi-hop network under the IAB technology in the related art;

3 is a flowchart of a method for determining time domain location information according to Embodiment 1 of the present invention;

4(a) is a schematic diagram showing a time domain position of a synchronization signal block in Embodiment 1 of the present invention;

4(b) is a schematic diagram showing the time domain position of a synchronization signal block in Embodiment 1 of the present invention;

FIG. 5(a) is a schematic diagram of a mapping pattern of a synchronization signal block (SS/PBCH block, abbreviated as SSB) in a time slot according to Embodiment 1 of the present invention;

FIG. 5(b) is a schematic diagram of a mapping pattern of a synchronization signal block in a time slot according to Embodiment 1 of the present invention; FIG.

FIG. 5(c) is a schematic diagram of a mapping pattern of a synchronization signal block in a time slot according to Embodiment 1 of the present invention; FIG.

FIG. 5(d) is a schematic diagram of a mapping pattern of a synchronization signal block in a time slot according to Embodiment 1 of the present invention;

FIG. 5(e) is a schematic diagram of a mapping pattern of a synchronization signal block in a time slot according to Embodiment 1 of the present invention; FIG.

6 is a time domain position of a time slot including an SSB transmission resource in a 5 ms time window according to Embodiment 1 of the present invention;

7 is a time domain position of a 5 ms time window including an SSB in a 20 ms transmission period according to Embodiment 1 of the present invention;

8 is a schematic diagram of a time domain location information determining apparatus according to Embodiment 2 of the present invention;

9 is a schematic diagram of determining a time domain location of a field containing an SSB in a 20 ms transmission period according to an identifier in a cell group according to an example 1 of the present invention;

10 is a schematic diagram showing a hierarchical relationship of an IAB node in a multi-hop network according to Example 3 of the present invention;

11 is a schematic diagram of determining, according to the intra-cell identifier, the SSB transmission resource corresponding to the SSB transmission resource in the 5 ms time window according to the identifier in the cell group;

FIG. 12 is a schematic diagram of determining a slot position occupied by an actually used SSB transmission resource in a 5 ms time window according to a hierarchical relationship of an IAB node in Example 5 of the present invention.

detailed description

In order to make the objects, technical solutions, and advantages of the present invention more comprehensible, the embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be noted that, in the case of no conflict, the features in the embodiments and the embodiments in the present application may be arbitrarily combined with each other.

Example 1

As shown in FIG. 3, an embodiment of the present invention provides a method for determining time domain location information, including:

Step S310, determining a correspondence between the node attribute information and the time domain position of the synchronization signal block.

Step S320, determining, according to the node attribute information of the node and the correspondence, the time domain location of the node to send the synchronization signal block.

In one embodiment, the synchronization signal block is an abbreviated form of a synchronization signal/physical broadcast channel block (SS (Synchronization Signal)/PBCH (Physical Broadcast Channel) block), and each synchronization signal block is within each synchronization signal block. And may include a synchronization signal and a physical broadcast channel (and corresponding demodulation reference signal), or, in some embodiments, only the synchronization signal, or, in some embodiments, only the physical broadcast channel (and corresponding solution) Adjust the reference signal).

In an embodiment, the node attribute information includes at least one of the following: a cell identifier of the node; an intra-cell group identifier of the node; a hierarchy of the node.

The cell identifier (cell ID) of the node is in one-to-one correspondence with the synchronization signal sequence, wherein the synchronization signal includes a primary synchronization signal (PSS, primary synchronization signal) and a secondary synchronization signal (SSS); The intra-group identifier is in one-to-one correspondence with the primary synchronization signal; the hierarchical level of the node may be used to describe the relative position of the node in the network, and in the multi-hop network, the node level defined to have a wired connection with the core network is defined as one level; The level of the lower node directly connected to the primary node is defined as the secondary level; the level of the lower node directly connected to the secondary node is defined as the third level, and so on; at this time, the level of the node is also It can be called the hop level of the node; or the level of the node can also be the configured value, and does not match the relative position of the node in the network, for example, the node is configured by the upper node of the node. Its level.

In an embodiment, the synchronization signal block time domain location includes at least one of the following: a half-frame time window position at which the node transmits the synchronization signal block; and the node actually transmits the time slot occupied by the synchronization signal block in the half-frame time window; The node actually transmits the sync block resource occupied by the sync signal block within the field time window.

Wherein, the field time window position of the transmission synchronization signal block refers to which half frame within the synchronization signal block transmission period (for example, 20 ms) transmits the synchronization signal block.

The synchronization signal block resource refers to: a time-frequency domain resource for transmitting a synchronization signal block, wherein, in the frequency domain, the synchronization signal block occupies 20 RBs (Resource Blocks) or 24 RBs; in the time domain, Each sync signal block occupies four symbols, as shown in Figures 5(a)-(e), for a different sync block subcarrier spacing, a set of time domain resources potentially used to transmit the sync signal block is predefined.

In an implementation manner, the correspondence between the node attribute information and the synchronization signal block time domain location is specified by a protocol, or is configured by an upper node of the node.

In one embodiment, the node is a converged access and backhaul IAB node in a multi-hop network.

In an embodiment, the determining, according to the attribute information of the node and the corresponding relationship, the time domain location of the node to send the synchronization signal block, including at least one of the following: a cell group identifier according to the node, and the corresponding relationship Determining, by the node, a field time window position of the synchronization signal block; determining, according to the cell identifier of the node and the correspondence, a frame time window position of the node to send the synchronization signal block; determining, according to the level of the node and the corresponding relationship Sending, by the node, a field time window position of the synchronization signal block; determining, according to the intra-cell group identifier and the correspondence relationship of the node, the synchronization signal block resource that the node actually transmits the synchronization signal block in the time frame of the field; The cell identifier and the corresponding relationship determine that the node actually transmits the synchronization signal block resource occupied by the synchronization signal block in the time frame of the field; determining, according to the level of the node and the correspondence, that the node is actually in the time frame of the field Transmitting a synchronization signal block resource occupied by the synchronization signal block; according to the intra-cell group identifier of the node and the corresponding correlation Determining, by the node, the time slot occupied by the synchronization signal block in the time frame of the field; determining, according to the cell identity of the node and the corresponding relationship, the time slot occupied by the node actually transmitting the synchronization signal block in the time frame of the field And determining, according to the level of the node and the correspondence, a time slot occupied by the node actually transmitting the synchronization signal block within a field time window.

In an embodiment, the determining, according to the attribute information of the node and the corresponding relationship, the time domain location of the node to send the synchronization signal block, including at least one of: according to the intra-cell group identity and level of the node, and the Determining, by the correspondence, a time frame of a subframe in which the node sends a synchronization signal block; determining, according to the identity and level of the cell group of the node, and the corresponding relationship, when the node actually uses the synchronization signal block to be occupied in the time frame of the field And determining, according to the identifier and the level of the cell group of the node, and the corresponding relationship, the synchronization signal block resource occupied by the node actually transmitting the synchronization signal block in the time frame of the field.

In an embodiment, the determining, according to the attribute information of the node and the corresponding relationship, the time domain location of the node to send the synchronization signal block, including at least one of: according to a cell identifier and a hierarchy of the node, and the corresponding relationship Determining, by the node, a field time window of the synchronization signal block; determining, according to the cell identifier and the level of the node, and the corresponding relationship, the time slot occupied by the node actually transmitting the synchronization signal block in the time frame of the field; The cell identity and level and the corresponding relationship jointly determine the synchronization signal block resource occupied by the node actually transmitting the synchronization signal block within the field time window.

In an implementation manner, the determining, by the intra-cell group identifier and the corresponding relationship of the node, a field time window position of the synchronization signal block sent by the node, where: when the identifier of the cell group of the node is a value a, Determining that the synchronization signal block is transmitted in the bth field within the synchronization signal block transmission period; wherein a=0, 1, 2, b=1, 2, ..., M, M is a synchronization signal block The total number of all fields in the transmission period.

Wherein, the value a and the value b may have a one-to-one correspondence, that is, each value a corresponds to a unique value b; or, the value a and the value b may also be a many-to-one relationship, that is, a plurality of different values a Corresponding to a unique value b; alternatively, the value a and the value b may also be a one-to-many relationship, that is, a value a corresponds to a plurality of values b.

For example, when the identifier of the cell group of the IAB node is 0, it is determined that the synchronization signal block is transmitted in the first field within the synchronization signal block transmission period; when the identifier of the cell group of the IAB node is 1, it is determined that Transmitting the synchronization signal block in a second field within a synchronization signal block transmission period; when the intra-cell group identifier of the IAB node is 3, determining to transmit the third field in a synchronization signal block transmission period Synchronization signal block.

In an implementation manner, the determining, according to the cell identifier of the node, the corresponding relationship, the location of the time frame of the subframe in which the node sends the synchronization signal block, where: when the cell identifier of the node belongs to the cth cell identifier set, Determining that the synchronization signal block is transmitted in the bth field within the synchronization signal block transmission period; wherein c=1, 2, . . . , N, b=1, 2, . . . , M, N is The total number of cell identification sets, M is the total number of all fields in a synchronization signal block transmission period.

Wherein, the value c and the value b may have a one-to-one correspondence, that is, each value c corresponds to a unique value b; or, the value c and the value b may also be a many-to-one relationship, that is, a plurality of different values c Corresponding to a unique value b; alternatively, the value c and the value b may also be a one-to-many relationship, that is, a value c corresponds to a plurality of values b.

The cell identifier set is to group multiple cell identifiers, and each group of cell identifiers corresponds to one cell identifier set.

For example, when the cell identifier of the IAB node belongs to the first cell identifier set, it is determined that the synchronization signal block is transmitted in the first field within the synchronization signal block transmission period; when the cell identifier of the IAB node belongs to the second cell identifier set. Determining, in the second field within the synchronization signal block transmission period, transmitting the synchronization signal block; when the cell identifier of the IAB node belongs to the third cell identity set, determining the third in the synchronization signal block transmission period Transmitting the synchronization signal block in a field; determining, when the cell identifier of the IAB node belongs to the fourth cell identity set, transmitting the synchronization signal block in a fourth field within a synchronization signal block transmission period;

The first cell identifier set may be {0, 1, 2...251}, the second cell identifier set may be {252, 253, 254...503}, and the third cell identifier set may be {504, 505, 506...755}, the fourth cell identifier set. It can be {756,757,758...1007}.

In an implementation manner, the determining, according to the level of the node and the corresponding relationship, the location of the field time window of the node to send the synchronization signal block, including: determining, when the level of the node is modulo X, the remainder is n, determining Transmitting the synchronization signal block in the bth field within the synchronization signal block transmission period; wherein n=0, 1, 2, ..., X-1, b=1, 2, ..., M , X is the total number of node level sets, and M is the total number of all fields in a sync signal block transmission period.

Wherein, the value n and the value b may have a one-to-one correspondence, that is, each value n corresponds to a unique value b; or, the value n and the value b may also be a many-to-one relationship, that is, a plurality of different values n Corresponding to a unique value b; alternatively, the value n and the value b may also be a one-to-many relationship, that is, a value n corresponds to a plurality of values b.

The node level set is grouped into multiple node levels, and each set of node levels corresponds to a node level set; for example, there are 9 node levels, and each node level set may include 3 node levels.

For example, when the IAB node level of the IAB node is modulo 4 and the remainder is 1, it is determined that the synchronization signal block is transmitted in the first field within the synchronization signal block transmission period; when the IAB node level of the IAB node is 4 When the remainder after the modulo is 2, it is determined that the synchronization signal block is transmitted in the second field within the synchronization signal block transmission period; when the IAB node level of the IAB node is modulo 4, the remainder is 3, and the synchronization is determined. The synchronization signal block is transmitted in the third field within the signal block transmission period; when the IAB node level of the IAB node is modulo 4, the remainder is 0, and the fourth field in the synchronization signal block transmission period is determined. Transmitting the synchronization signal block; wherein, when the first level of the IAB node is the first level, it corresponds to the IAB donor (IAB host base station), the next level of the first level is the second level, and the next level of the second level is the third level. Level, the next level of the third level is the fourth level.

In an implementation manner, the determining, according to the intra-cell group identifier and the corresponding relationship of the node, the synchronization signal block resource that the node actually transmits the synchronization signal block in the time frame of the field, including: the cell group of the node When the internal identifier is the value a, it is determined that the synchronization signal block is transmitted by occupying the dth synchronization signal block resource set in the field time window; wherein a=0, 1, 2, d=1, 2, ..., D D is the total number of sets of all sync block resources within the half-frame time window.

Wherein, the value a and the value d may have a one-to-one correspondence, that is, each value a corresponds to a unique value d; or, the value a and the value d may also be a many-to-one relationship, that is, a plurality of different values a Corresponding to a unique value d; alternatively, the value a and the value d may also be a one-to-many relationship, that is, a value a corresponds to a plurality of values d.

For example, when the identifier of the cell group of the IAB node is 0, it is determined that the synchronization signal block is occupied by occupying the first synchronization signal block resource set in the field time window; when the identifier of the cell group of the IAB node is 1, it is determined that The second synchronization signal block resource set occupies the synchronization signal block in a half frame time window; when the intra-cell group identifier of the IAB node is 2, determining to occupy the third synchronization signal block resource set transmission in the half frame time window Synchronization signal block;

The first synchronization signal block resource set includes a first synchronization signal block resource, a fourth synchronization signal block resource, and a seventh synchronization signal block resource; the second synchronization signal block resource set includes a second synchronization signal block resource, a fifth synchronization signal block resource and an eighth synchronization signal block resource; the third synchronization signal block resource set includes a third synchronization signal block resource and a sixth synchronization signal block resource.

The first synchronization signal block resource to the eighth synchronization signal block resource are predefined resources for potentially transmitting the synchronization signal block, and are sequentially defined as the first synchronization signal block resource to the eighth synchronization signal in chronological order. Block resource.

In an embodiment, the determining, according to the cell identifier of the node, the corresponding relationship, the synchronization signal block resource that the node actually transmits the synchronization signal block in the time frame of the field, including: when the cell identifier of the node belongs to the Determining a set of cell identifiers, determining to occupy the d-th synchronization signal block resource set to transmit the synchronization signal block in a field time window; wherein, f=1, 2, . . . , F, d=1, 2, ..., D, F is the total number of cell identification sets, and D is the total number of all sync signal block resource sets within the half-frame time window.

Wherein, the value f and the value d may have a one-to-one correspondence, that is, each value f corresponds to a unique value d; or, the value f and the value d may also be a many-to-one relationship, that is, a plurality of different values f Corresponding to a unique value d; alternatively, the value f and the value d may also be a one-to-many relationship, that is, a value f corresponds to a plurality of values d.

In an implementation manner, the determining, according to the level of the node and the corresponding relationship, the synchronization signal block resource that the node actually transmits the synchronization signal block in the time frame of the field, including: when the level of the node is modulo Y When the remainder is n, it is determined that the synchronization signal block is transmitted by occupying the dth synchronization signal block resource set in the field time window; wherein n=0, 1, 2, ..., Y-1, d=1 , 2, ..., D, Y are the total number of node level sets, and D is the total number of all sync signal block resource sets in the field time window.

Wherein, the value n and the value d may have a one-to-one correspondence, that is, each value n corresponds to a unique value d; or, the value n and the value d may also be a many-to-one relationship, that is, a plurality of different values n Corresponding to a unique value d; alternatively, the value n and the value d may also be a one-to-many relationship, that is, a value n corresponds to a plurality of values d.

In an implementation manner, the determining, according to the intra-cell group identifier and the corresponding relationship of the node, the time slot that the node actually sends the synchronization signal block in the time frame of the field, including: When the value is a, it is determined that the synchronization signal block is transmitted by occupying the e-th slot set in the field time window; wherein a=0, 1, 2, e=1, 2, ..., E, E is The total number of all time slot sets in the half frame time window, the value a has a one-to-one correspondence with the value e.

Wherein, the value a and the value e may have a one-to-one correspondence, that is, each value a corresponds to a unique value e; or, the value a and the value e may also be a many-to-one relationship, that is, a plurality of different values a Corresponding to a unique value e; alternatively, the value a and the value e may also be a one-to-many relationship, that is, a value a corresponds to a plurality of values e.

In an implementation manner, the determining, according to the cell identifier of the node, the corresponding relationship, the time slot that the node actually sends the synchronization signal block in the time frame of the field, including: when the cell identifier of the node belongs to the gth When the cell identifier set is set, it is determined that the synchronization signal block is transmitted by occupying the e-th slot set in the field time window; wherein, g=1, 2, . . . , G, e=1, 2, . E, G is the total number of cell identification sets, and E is the total number of all time slot sets in the half-frame time window.

Wherein, the value g and the value e may have a one-to-one correspondence, that is, each value g corresponds to a unique value e; or, the value g and the value e may also be a many-to-one relationship, that is, a plurality of different values g Corresponding to a unique value e; alternatively, the value g and the value e may also be a one-to-many relationship, that is, a value g corresponds to a plurality of values e;

In an implementation manner, the determining, according to the level of the node and the corresponding relationship, the time slot occupied by the node actually transmitting the synchronization signal block in the time frame of the field, including: the remainder after the level of the node is modeled by Z When n, it is determined that the synchronization signal block is transmitted by occupying the e-th slot set in the field time window; wherein, n=0, 1, 2, ..., Z-1, e=1, 2,. .., E, Z is the total number of node level sets, and E is the total number of all time slot sets in the half frame time window.

Wherein, the value n and the value e may have a one-to-one correspondence, that is, each value n corresponds to a unique value e; or, the value n and the value e may also be a many-to-one relationship, that is, a plurality of different values n Corresponding to a unique value e; alternatively, the value n and the value e may also be a one-to-many relationship, that is, a value n corresponds to a plurality of values e.

For example, when the IAB node level of the IAB node is modulo 4 and the remainder is 1, it is determined that the synchronization signal block is occupied by occupying slot 0 in the field time window; when the IAB node level of the IAB node is modulo 4 When it is 2, it is determined that the synchronization signal block is occupied by occupying the time slot 1 in the field time window; when the IAB node level of the IAB node is modulo 4, the remainder is 3, and it is determined that the time slot 2 is occupied in the time frame of the field. Transmitting the synchronization signal block; when the IAB node level of the IAB node is modulo 4 and the remainder is 0, it is determined that the synchronization signal block is occupied by occupying the time slot 3 in the field time window;

Wherein, slot 0 is the first slot in the half-frame time window, slot 1 is the second slot in the half-frame time window, and slot 2 is the third slot in the half-frame time window. Time slot 3 is the fourth time slot within the field time window.

The above values of X, Y, and Z may be the same or different. The values of N, F, and G above may be the same or different. That is, the division of the node level set may be divided according to different requirements, and the division of the cell identification set may also be divided according to different requirements.

Some physical concepts in this embodiment will be described below.

In this embodiment, a synchronization signal/physical broadcast channel block (SS/PBCH block, abbreviated as SSB) is used to carry an access-related signal channel such as a synchronization signal and/or a physical broadcast channel (and a corresponding demodulation reference signal DMRS). Time-frequency resources; each synchronization signal block may include a synchronization signal and a physical broadcast channel (and corresponding demodulation reference signal), or, in some embodiments, only a synchronization signal, or, in some embodiments, Only the physical broadcast channel (and corresponding demodulation reference signal) is included.

4(a) and 4(b) are schematic diagrams of a sync signal block (SS/PBCH block, abbreviated as SSB). The sync signal block usually includes 4 symbols, and the first and third symbols respectively carry the main synchronization signal. PSS (Primary Synchronization Signal) and the secondary synchronization signal SSS (Secondary Synchronization Signal), the synchronization signal sequence is mapped to 127 resource elements (Resource Element, RE for short) in 12 physical resource blocks (PRBs). . As shown in FIG. 4(a), in some configurations, the physical broadcast channel PBCH is only carried on the second and fourth symbols in the sync signal block, occupying 24 PRBs, or as shown in FIG. 4(b). In other resource configurations, the physical broadcast channel PBCH is mapped on the second, third, and fourth symbols in the sync signal block. On each symbol, the number of occupied PRBs is as follows: in the second and fourth The symbol occupies 20 PRBs. On the third symbol, the PBCH occupies 4 PRBs on both sides of the secondary synchronization signal, for a total of 8 PRBs. In the above configuration, the sync signal is aligned with the center frequency of the PBCH. The synchronization signal block (SS/PBCH block) can also be extended to the time domain structure of more symbols. For example, one or two PBCH symbols are added on the basis of FIG. 4(a) and FIG. 4(b), thereby carrying more Broadcast information. The added symbols can be inserted anywhere in the existing 4-symbol sync block (SS/PBCH block) structure.

A plurality of synchronization signal blocks (SS/PBCH blocks) form a synchronization signal window group (SS/PBCH burst set), which is a sweeping resource for transmitting a synchronization signal and a physical broadcast channel, wherein the synchronization signal window Each synchronization signal block (SS/PBCH block) in the group carries a synchronization signal of a specific beam/port (group), and the synchronization signal window group completes one beam scanning, that is, completes transmission of all beams/ports. The synchronization signal block may further include a physical broadcast channel PBCH, a demodulation reference signal corresponding to the PBCH, other control channels, and other signals such as a data channel. Wherein, since multiple synchronization signal blocks are mapped into the same subframe, the offsets of different synchronization signal blocks with respect to the subframe boundary are different, and terminals at different positions may successfully detect the synchronization signal in any one of the synchronization signal blocks. In order to complete the subframe timing, the terminal needs to know the time index information currently synchronized to the sync signal block.

The mapping pattern of the synchronization signal block in the time slot may be different under different subcarrier intervals, including:

Case A: As shown in Figure 5(a), an SSB mapping pattern corresponding to a 15 kHz subcarrier spacing illustrates the transmission resources of each SSB, a 15 kHz slot (ie, 14 15 kHz symbols). It contains two SSBs, each occupying four 15 kHz symbols, and is mapped to symbol 2-symbol 5 and symbol 8-symbol 11, respectively.

Case B: As shown in Figure 5(b), an SSB mapping pattern corresponding to a 30 kHz subcarrier spacing illustrates the transmission resources of each SSB in two 30 kHz slots (ie, 28 30 kHz symbols (symbol) )) contains 4 SSBs, each occupying 4 30 kHz symbols, and respectively mapped symbol 4-symbol 7, symbol 8-symbol 11 in the first time slot and symbol 2-symbol 5 in the second time slot, Symbol 6-symbol 9.

Case C: As shown in Figure 5(c), another SSB mapping pattern corresponding to the 30 kHz subcarrier spacing illustrates the transmission resources of each SSB in two 30 kHz time slots (ie, 28 30 kHz symbols). Contains 4 SSBs, each occupying 4 30 kHz symbols, and respectively mapped symbol 2-symbol 5, symbol 8-symbol 11 in the first time slot, and symbol 2-symbol 5, symbol 8 in the second time slot. -symbol 11.

Case D: As shown in Figure 5(d), an SSB mapping pattern corresponding to a 120 kHz subcarrier spacing illustrates the transmission resources of each SSB in two 120 kHz time slots (ie, 28 120 kHz symbols). Contains 4 SSBs, each occupying 4 120 kHz symbols, and respectively mapped symbol 4-symbol 7 in the first time slot 7, symbol 8-symbol 11, and symbol 2-symbol 5 in the second time slot, symbol 6- Symbol 9.

Case E: As shown in Figure 5(e), an SSB mapping pattern corresponding to a 240 kHz subcarrier spacing illustrates the transmission resources of each SSB in two 120 kHz time slots (ie, 56 240 kHz symbols). Contains 8 SSBs, each occupying 4 240 kHz symbols, and respectively maps symbol 8-symbol 11, symbol 12-symbol 15, symbol 16-symbol 19, symbol 20-symbol 23, and the second in the first time slot. Symbol 32-symbol 35, symbol 36-symbol 39, symbol 40-symbol 43, symbol 44-symbol 47.

In the above description, the occupancy symbol case when the SSB is mapped in the same slot as its subcarrier is illustrated. When the SSB is mapped in a slot different from its subcarrier spacing, the absolute time position occupied by the SSB is unchanged, and the occupied symbol index needs to be transformed into a symbol index of the target subcarrier spacing.

For different frequency ranges, the maximum number of SSB transmission resources is different. For the frequency range below 3 GHz, the maximum number is 4; for the frequency range between 3 GHz and 6 GHz, the maximum number is 8; for the frequency range above 6 GHz, the maximum number is 64. In order to support the above number of SSB transmission resources, the mapping pattern of the SSB will continue for multiple time slots. Specifically, as shown in FIG. 6, all slots containing SSB transmission resources are concentrated in a 5 ms time window. For a 15 kHz subcarrier interval, when the maximum number of SSBs is L=4, two slots of 15 kHz subcarrier spacing are required to map 4 SSB transmission resources, that is, occupy the first 2 ms of a certain field (5 ms). The different combinations of subcarrier spacing and maximum SSB number are also given in Fig. 6 ({15 kHz, L=8}, {30 kHz, L=4}, {30 kHz, L=8}, {120 kHz, L=64}. , {240 kHz, L = 64}), the time domain position of the time slot containing the SSB transmission resource within the 5 ms time window.

The SSB mapping pattern is a potential location of the SSB transmission, and the base station can select a required number of SSB transmission resources for the actual transmission of the SSB, that is, the SSB transmission resource is the maximum value of the actual number of SSBs in a period, and some or all of the transmissions can be selected. The resource actually transmits the SSB.

In addition, the transmission period of the SSB includes the following values: 5ms, 10ms, 20ms, 40ms, 80ms, 160ms. For the carrier that supports the initial access, the terminal performs SSS detection and combined reception according to the SSS transmission period of 20 ms. Therefore, the actual transmission period of the SSB can only be less than or equal to 20 ms, for example, it can be 5 ms, 10 ms, and 20 ms. When the SSB transmission period is 20ms, the 5ms time window containing the SSB can be configured for any 5ms within the 20ms transmission period. As shown in FIG. 7, within 20 ms (ie, two adjacent radio frames), four half frames are included, and the SSB is configured in the first field. At this point, the SSB is also transmitted in the first field in other cycles. Similarly, the SSB can be configured in other identical fields within each cycle. When the SSB transmission period is 10 ms, the 5 ms time window containing the SSB can be configured in an odd field or an even field in a 20 ms transmission period. When the SSB transmission period is 5 ms, each field within the 20 ms transmission period contains the SSB.

Example 2

As shown in FIG. 8, the embodiment of the present invention provides a time domain location information determining apparatus, including: a correspondence determining module 801, configured to determine a correspondence between node attribute information and a time domain location of a synchronization signal block; a location determining module 802, configured to determine, according to node attribute information of the node and the correspondence, a time domain location of the node sending the synchronization signal block;

In an embodiment, the node attribute information includes at least one of the following: a cell identifier of the node; an intra-cell group identifier of the node; a hierarchy of the node.

In an embodiment, the synchronization signal block time domain location includes at least one of the following: a half-frame time window position at which the node transmits the synchronization signal block; and the node actually transmits the time slot occupied by the synchronization signal block in the half-frame time window; The node actually transmits the sync block resource occupied by the sync signal block within the field time window.

In an implementation manner, the correspondence between the node attribute information and the synchronization signal block time domain location is specified by a protocol, or is configured by an upper node of the node.

In one embodiment, the node is a converged access and backhaul IAB node in a multi-hop network.

In an embodiment, the time domain location determining module is configured to determine, according to the attribute information of the node and the correspondence, the time domain location of the synchronization signal block sent by the node according to the at least one of the following: Determining, by the identifier and the corresponding relationship, a time frame position of a subframe in which the node sends a synchronization signal block; determining, according to a cell identifier of the node and the corresponding relationship, a time frame window position of the synchronization signal block sent by the node; Determining, by the corresponding relationship, a time frame position of the subframe in which the node sends the synchronization signal block; determining, according to the identifier of the intra-cell group of the node and the corresponding relationship, synchronization of the synchronization signal block actually transmitted by the node in the time frame of the field a signal block resource; determining, according to the cell identifier of the node, the corresponding relationship, the synchronization signal block resource that the node actually transmits the synchronization signal block in the time frame of the field; determining the node according to the level of the node and the corresponding relationship The synchronization signal block resource occupied by the synchronization signal block is actually transmitted in the half frame time window; The internal identifier and the corresponding relationship determine a time slot occupied by the node actually transmitting the synchronization signal block in the time frame of the field; determining, according to the cell identifier of the node and the correspondence, that the node actually transmits the synchronization within the time frame of the field a time slot occupied by the signal block; determining, according to the level of the node and the corresponding relationship, the time slot occupied by the node actually transmitting the synchronization signal block within the time frame of the field.

a time domain location determining module, configured to determine, according to at least one of the following manners, a time domain location of the node to send the synchronization signal block according to the attribute information of the node and the corresponding relationship: according to the identity and level of the cell group in the node, and the corresponding The relationship jointly determines a time frame of the subframe in which the node sends the synchronization signal block; and jointly determines, according to the identity and level of the intra-cell group of the node, and the corresponding relationship, the time slot occupied by the node actually transmitting the synchronization signal block in the time frame of the field And determining, according to the identifier and level of the cell group of the node, and the corresponding relationship, the synchronization signal block resource occupied by the node actually transmitting the synchronization signal block in the time frame of the field.

In an embodiment, the time domain location determining module is configured to determine, according to the attribute information of the node and the correspondence, the time domain location of the node to send the synchronization signal block according to at least one of the following: according to the cell identifier of the node Determining, by the level and the corresponding relationship, a time frame of a subframe in which the node sends a synchronization signal block; determining, according to the cell identifier and the level of the node, and the corresponding relationship, that the node actually transmits the synchronization signal block in the time frame of the field The time slot is determined according to the cell identifier and the level of the node and the corresponding relationship, and the synchronization signal block resource occupied by the node actually transmitting the synchronization signal block in the time frame of the field is determined.

In an embodiment, the time domain location determining module is configured to determine, according to the intra-cell group identifier of the node and the corresponding relationship, a subframe time window position of the node sending the synchronization signal block: when the node group of the node When the internal identifier is the value a, it is determined that the synchronization signal block is transmitted in the bth field within the synchronization signal block transmission period; wherein, a=0, 1, 2, b=1, 2, ..., M M is the total number of all fields in a sync signal block transmission period.

In an embodiment, the time domain location determining module is configured to determine, according to the cell identifier of the node and the corresponding relationship, a subframe time window position at which the node sends the synchronization signal block: when the cell identifier of the node belongs to the When c sets of cell identifiers, it is determined that the synchronization signal block is transmitted in the bth field within the synchronization signal block transmission period; wherein c=1, 2, . . . , N, b=1, 2,. .., M, N is the total number of cell identification sets, and M is the total number of all fields in a synchronization signal block transmission period.

In an embodiment, the time domain location determining module is configured to determine, according to the hierarchical level of the node and the corresponding relationship, a subframe time window position at which the node sends the synchronization signal block: when the node level is modulo X When the remainder is n, it is determined that the synchronization signal block is transmitted in the bth field within the synchronization signal block transmission period; wherein n=0, 1, 2, ..., X-1, b=1, 2,...,M,X is the total number of node level sets, and M is the total number of all fields in a sync signal block transmission period.

In an embodiment, the time domain location determining module is configured to determine, according to the intra-cell group identifier and the corresponding relationship of the node, the synchronization signal block that the node actually transmits the synchronization signal block in the half-frame time window. Resource: when the identifier of the cell group of the node is the value a, it is determined that the synchronization signal block is transmitted by occupying the dth synchronization signal block resource set in the field time window; wherein, a=0, 1, 2, d=1 , 2, ..., D, D are the total number of all sync block resource sets within the half-frame time window.

In an embodiment, the time domain location determining module is configured to determine, according to the cell identifier of the node and the corresponding relationship, the synchronization signal block resource that the node actually transmits the synchronization signal block in the field time window: When the cell identifier of the node belongs to the fth cell identifier set, it is determined that the synchronization signal block is generated by occupying the dth synchronization signal block resource set in the field time window; wherein, f=1, 2, . . . , F , d=1, 2, . . . , D, F is the total number of cell identifier sets, and D is the total number of all sync signal block resource sets in the field time window.

In an embodiment, the time domain location determining module is configured to determine, according to the hierarchical level of the node and the corresponding relationship, the synchronization signal block resource that the node actually transmits the synchronization signal block in the field time window: When the level of the node is modulo Y and the remainder is n, it is determined that the synchronization signal block is transmitted by occupying the d-th synchronization signal block resource set in the field time window; wherein, n=0, 1, 2, ..., Y-1, d=1, 2, ..., D, Y are the total number of node level sets, and D is the total number of all sync signal block resource sets in the field time window.

In an embodiment, the time domain location determining module is configured to determine, according to the intra-cell group identity of the node and the corresponding relationship, a time slot occupied by the node actually transmitting the synchronization signal block in a field time window: When the identifier of the cell group of the node is the value a, it is determined that the synchronization signal block is transmitted by occupying the e-th slot set in the field time window; wherein, a=0, 1, 2, e=1, 2,. .., E, E is the total number of all time slot sets in the half frame time window.

In an embodiment, the time domain location determining module is configured to determine, according to the cell identifier of the node and the corresponding relationship, a time slot occupied by the node actually transmitting the synchronization signal block in a field time window: when the node When the cell identifier belongs to the gth cell identifier set, it is determined that the synchronization signal block is transmitted by occupying the e-th slot set in the field time window; wherein, g=1, 2, . . . , G, e=1 , 2, ..., E, G are the total number of cell identification sets, and E is the total number of all time slot sets in the half-frame time window.

In an embodiment, the time domain location determining module is configured to determine, according to the hierarchical level of the node and the corresponding relationship, the time slot occupied by the node in the half frame time window by the synchronization signal block: when the node When the level is z after modulo-modulo, it is determined that the synchronization signal block is transmitted by occupying the e-th slot set in the field time window; wherein, n=0, 1, 2, ..., Z-1, e = 1, 2, ..., E, Z is the total number of node level sets, and E is the total number of all time slot sets in the half frame time window.

Example 3

An embodiment of the present invention provides a time domain location information determining apparatus, including: a memory, a processor, and a time domain location information determining program stored on the memory and operable on the processor, the time domain location The step of implementing the time domain location information determining method described in Embodiment 1 above when the information determining program is executed by the processor.

Example 4

An embodiment of the present invention provides a computer readable storage medium, where the computer readable storage medium stores a time domain location information determining program, and the time domain location information determining program is executed by the processor to implement the foregoing Embodiment 1. The step of determining the time domain location information determining method.

The time domain location information determining method of the present application is further illustrated by some examples.

Example 1

In order to achieve the staggering of the transmission resources of the synchronization signal block (SS/PBCH block, abbreviated as SSB) between adjacent IAB nodes, this example describes a method for determining the time domain location of the SSB transmission according to the primary synchronization signal (ie, the intra-cell ID).

The primary synchronization signal includes three sequences of length 127, corresponding to different "intra-cell identity" (cell group ID), each sequence corresponding to a different field within a 20 ms SSB transmission period, as shown in FIG. Indicate that the identifier in the cell group is =0, that is,

When the SSB is carried in the first field within the 20ms transmission period (that is, the first 5ms within 20ms starting from the start point of the even radio frame);

Corresponding to the SSB being carried in the second field within the 20ms transmission period (ie, starting from the beginning of the even-numbered radio frame boundary (for example, SFN (System Frame Number) = 0) within 6ms of the 6ms to 10ms); identification within the cell group

Corresponding to the SSB bearer in the third field within the 20ms transmission period (ie, 11ms to 15ms within 20ms starting from the start point of the even radio frame). In FIG. 9, the Initial BWP is a BWP (bandwidth part) that carries an initial access-related channel signal, where the initial access-related channel signal includes at least Remaining minimum system information (RMSI). The RMSI is also referred to as System Information Block 1 (SIB1).

The correspondence between the identifier in the Cell group and the field in the 20ms transmission period may be specified by the protocol, or configured by the upper node of the IAB node to the IAB node. The corresponding relationship is only an example, and other correspondences are also supported.

The IAB node determines the time domain resource for which the SSB is transmitted according to the above correspondence, in combination with its own cell ID (ie, in which field to send the SSB).

In this embodiment, the SSB transmission location is bound to the identifier in the cell group. Because the neighboring IAB nodes are generally configured with different intra-cell group identifiers during network planning, the neighboring IAB nodes may be in different fields. The respective SSBs are transmitted internally, so that the SSB transmission resources can be effectively staggered, thereby supporting the IAB node to utilize the SSB as a measurement reference signal discovered by the neighboring nodes.

Example 2

In order to realize the staggering of the transmission resources of the synchronization signal block (SS/PBCH block, abbreviated as SSB) between adjacent IAB nodes, this example describes that the cell ID is in one-to-one correspondence with the synchronization signal sequence, and the synchronization signal includes the main synchronization signal. And the secondary synchronization signal, which together determine the cell ID) method for determining the time domain location of the SSB transmission.

The IAB node determines the correspondence between the cell ID and the time domain location of the transmission SSB (ie, the correspondence between the half frames in the 20 ms transmission period) according to the provisions in the protocol or the configuration of the upper IAB node (or IAB donor). For example, the following correspondence is predefined: the cell ID is divided into N groups, and each group of cell IDs corresponds to an SSB time domain location. Specifically, 1008 cell IDs can be divided into 4 groups, where

The cell IDs 0 to 251 correspond to the SSB being carried in the first field within the 20 ms transmission period (ie, the first 5 ms within 20 ms starting from the start point of the even radio frame);

The cell IDs 252-503 correspond to the SSB being carried in the second field within the 20 ms transmission period (ie, 6 ms to 10 ms within 20 ms starting from the start point of the even radio frame);

The cell IDs 504-755 correspond to the SSB being carried in the third field within the 20 ms transmission period (ie, 11 ms to 15 ms within 20 ms starting from the start point of the even radio frame);

The cell IDs 756 - 1007 correspond to the SSB being carried in the fourth field within the 20 ms transmission period (ie, the last 5 ms within 20 ms starting with the start of the even radio frame start).

The correspondence rule between the above cell ID and the SSB transmission time domain location is only an example, and other correspondences are also supported.

The IAB node determines the time domain resource for which the SSB is transmitted according to the above correspondence, in combination with its own cell ID (ie, in which field to send the SSB).

Example 3

In order to realize the staggering of the transmission resources of the synchronization signal block (SS/PBCH block, abbreviated as SSB) between adjacent IAB nodes, this example describes a method of determining the time domain location of the SSB transmission according to the hierarchy of the IAB node.

As shown in FIG. 10, there may be a transit of multiple IAB nodes from the IAB donor to the UE. The time domain resources of the transmitting SSB are determined according to the levels of these IAB nodes (including the IAB donor and the IAB node). For example, the IAB donor is defined as the first layer IAB node, and the IAB donor is defined downward as the second layer IAB node (ie, IAB node 1 in FIG. 10), and the third layer IAB node (ie, IAB node 2 in FIG. 10). And so on, the Nth layer IAB node (ie IAB node N-1 in Figure 10).

The correspondence between the IAB node level and the position of the 5ms SSB time window in the 20ms transmission period is defined, for example, as shown in Table 1 below.

Table 1

When an IAB node1 is powered on, it will be discovered as a terminal and access to the IAB donor or other IAB node. The IAB donor or other IAB node to which the IAB node1 is connected will be the parent IAB node of the IAB node1 (the parent IAB node, ie the upper IAB). Node), and the parent IAB node indicates its own level to the IAB node1, and the IAB node1 adds one of the above indicated levels to obtain its own IAB node level. For example, if IAB node1 is connected to another IAB node2, and the level of IAB node2 is two, the level of IAB node1 is three. The manner in which the IAB node informs its IAB node of its level may be notified by broadcast information or by RRC dedicated signaling. Or implicitly indicated.

In the implicit indication mode, for example, the time domain position of the SSB transmitted according to the upper layer IAB node is the second field in the 20 ms transmission period. Therefore, according to the correspondence relationship of Table 1, the IAB node 1 determines that the level of the upper node is satisfied. "N mod 4=2", the level of IAB node1 should satisfy "N mod 4=3", thereby determining that the SSB should be transmitted in the third field within the 20ms transmission period.

The IAB node1 may also determine the time domain location of the SSB according to the time domain location of the SSB transmitted by the upper IAB node without determining the level of the upper IAB node. For example, the time domain location of the SSB according to the upper IAB node is In the second field of the 20ms transmission period, the time domain position of the ISB node1 transmission SSB is the third field in the 20ms transmission period.

The corresponding relationship between the foregoing IAB node level and the SSB time domain location is only an example, and the corresponding relationship specified in other protocols, or the corresponding relationship indicated by the upper layer IAB node, can be used for determining the time domain location of the ISB node SSB.

Example 4

When different IAB nodes transmit synchronization signal blocks (SS/PBCH block, abbreviated as SSB) within the same 5 ms time window, resource offsets at the slot level or SSB level may be performed. This example describes a method of determining the time domain location of an SSB transmission based on a primary synchronization signal (ie, an intra-cell ID).

The primary synchronization signal includes three sequences of length 127, corresponding to different "intra-cell identity". Define the correspondence between the identifiers in different cell groups and the SSB transmission resources. As shown in FIG. 11, the case where the subcarrier spacing is 15 kHz and the number of SSB transmission resources in one cycle is 8, the identifier in the cell group is =0.

Select the 1, 4, and 7 SSB transmission resources for SSB transmission;

Select the 2nd, 5th, and 8th SSB transmission resources for SSB transmission;

When the third and sixth SSB transmission resources are selected for SSB transmission.

The correspondence between the identifiers in the cell group and the SSB transmission resources may be specified by the protocol, or configured by the upper node of the IAB node to the IAB node. The corresponding relationship is only an example, and other correspondences are also supported.

The IAB node determines the time domain resources (ie, which SSB transmission resources are actually sent by the SSB) based on the above correspondence, combined with its own cell ID.

In this example, the SSB transmission location is bound to the intra-cell identity. Since the neighboring IAB nodes are generally configured with different intra-cell IDs during network planning, the neighboring IAB nodes may be in the same field. The SSBs are transmitted in the same slot or different SSB transmission resources. Therefore, the SSB transmission resources can be effectively staggered, thereby supporting the IAB node to use the SSB as the measurement reference signal discovered by the neighboring nodes.

Example 5

When different IAB nodes transmit synchronization signal blocks (SS/PBCH block, abbreviated as SSB) within the same 5 ms time window, resource offsets at the slot level or SSB level may be performed. This example describes a method of determining the time domain location of an SSB transmission based on the hierarchy of IAB nodes.

As shown in FIG. 10, there may be a transit of multiple IAB nodes from the IAB donor to the UE. The time domain resources of the transmitting SSB are determined according to the hierarchy of these IAB nodes (including the IAB donor and the IAB node). For example, the IAB donor is defined as the first layer IAB node, and the IAB donor is defined downward as the second layer IAB node (ie, IAB node 1 in FIG. 10), and the third layer IAB node (ie, IAB node 2 in FIG. 10). And so on, the Nth layer IAB node (ie IAB node N-1 in Figure 10).

As shown in FIG. 12, a case where the subcarrier spacing is 15 kHz and the number of SSB transmission resources in one cycle is 8 (a total of 4 slots) is taken as an example, and the correspondence between the IAB node level and the SSB transmission resource is defined. ,As shown in table 2.

Table 2

When an IAB node1 is powered on, it will be discovered as a terminal and access to the IAB donor or other IAB node. The IAB donor or other IAB node to which the IAB node1 is connected will be the parent IAB node of the IAB node1 (the parent IAB node, ie the upper IAB). Node), and the parent IAB node indicates its own level to the IAB node1, and the IAB node1 adds one of the above indicated levels to obtain its own IAB node level. For example, if IAB node1 is connected to another IAB node2, and the level of IAB node2 is two, the level of IAB node1 is three. The manner in which the IAB node informs its IAB node of its level may be notified by broadcast information or by RRC dedicated signaling. Or implicitly indicated.

In the implicit indication mode, for example, the time domain location of the SSB transmitted according to the upper layer IAB node is the second time slot. Therefore, according to the correspondence relationship of Table 2, the IAB node1 determines that the hierarchy of the upper node satisfies "N mod 4= 2", then the level of IAB node1 should satisfy "N mod 4=3" to determine that the SSB should be transmitted in the third time slot.

The IAB node1 may also determine the time domain location of the SSB according to the time domain location of the SSB transmitted by the upper IAB node without determining the level of the upper IAB node. For example, the time domain location of the SSB according to the upper IAB node is In the second time slot, the time domain location of the ISB node 1 transmission SSB is the third time slot.

The correspondence between the foregoing IAB node level and the SSB time domain location is only an example, and the corresponding relationship specified in other protocols, or the corresponding relationship indicated by the upper IAB node, can be used for determining the time domain location of the ISB node.

Example 6

In order to realize the staggering of the transmission resources of the synchronization signal block (SS/PBCH block, abbreviated as SSB) between adjacent IAB nodes, the time domain location of the SSB transmission may also be determined according to the cell ID and the IAB level.

For example, the 5 ms time window of the transmission SSB (ie, which half of the 20 ms SSB transmission period is transmitted) is determined according to the cell ID; and it is further determined according to the IAB level which SSB transmission resources within 5 ms are used to transmit the SSB.

For another example, the 5 ms time window for transmitting the SSB (ie, which half of the 20 ms SSB transmission period is transmitted) is determined according to the IAB level; and further, according to the cell ID, which SSB transmission resources within 5 ms are used to transmit the SSB.

Alternatively, the 5 ms time window of the transmission SSB (ie, which half of the 20 ms SSB transmission period is transmitted in the SSB) is determined according to the cell ID and the IAB level.

Alternatively, according to the cell ID and the IAB level, it is determined which SSB transmission resources within 5 ms are used to transmit the SSB transmission SSB.

It should be noted that various other embodiments and modifications may be made by those skilled in the art without departing from the spirit and scope of the application, Corresponding changes and modifications are intended to fall within the scope of the appended claims.

Claims (22)

1. A method for determining time domain location information, comprising:

   Determining a correspondence between node attribute information and a time domain position of the synchronization signal block;

   Determining a time domain location of the synchronization signal block sent by the node according to the node attribute information of the node and the correspondence.
2. The method of claim 1, wherein the node attribute information comprises at least one of the following:

   The cell ID of the node;

   The identifier of the cell group of the node;

   The level of the node.
3. The method of claim 2, wherein the synchronization signal block time domain location comprises at least one of the following:

   The half-frame time window position at which the node transmits the synchronization signal block;

   The node actually transmits the time slot occupied by the synchronization signal block within the field time window;

   The node actually transmits the sync block resource occupied by the sync signal block within the field time window.
4. The method of claim 3, wherein the determining, according to the attribute information of the node and the correspondence, the time domain location of the node to send the synchronization signal block, comprising at least one of the following:

   Determining, according to the intra-cell group identifier of the node and the corresponding relationship, a field time window position at which the node sends the synchronization signal block;

   Determining, according to the cell identifier of the node and the corresponding relationship, a field time window position at which the node sends the synchronization signal block;

   Determining, according to a level of the node and the corresponding relationship, a time frame position of the field in which the node sends the synchronization signal block;

   Determining, according to the identifier of the cell group in the node and the corresponding relationship, the synchronization signal block resource that the node actually transmits the synchronization signal block in the time frame of the field;

   Determining, according to the cell identifier of the node, the corresponding relationship, the synchronization signal block resource that the node actually transmits the synchronization signal block in the time frame of the field;

   Determining, according to the level of the node and the corresponding relationship, the synchronization signal block resource that the node actually transmits the synchronization signal block in the time frame of the field;

   Determining, according to the identifier of the cell group in the node and the corresponding relationship, a time slot occupied by the node actually transmitting the synchronization signal block in a field time window;

   Determining, according to the cell identifier of the node and the corresponding relationship, a time slot occupied by the node actually transmitting the synchronization signal block in a field time window;

   Determining, according to the level of the node and the corresponding relationship, the time slot occupied by the node actually transmitting the synchronization signal block within the field time window.
5. The method of claim 3, wherein the determining, according to the attribute information of the node and the correspondence, the time domain location of the node to send the synchronization signal block, comprising at least one of the following:

   Determining, according to the identifier and level of the cell group of the node, and the corresponding relationship, a field time window of the node transmitting the synchronization signal block;

   Determining, according to the identity and level of the cell group in the node, and the corresponding relationship, the time slot occupied by the node actually transmitting the synchronization signal block in the time frame of the field;

   Determining, according to the identity and level of the cell group of the node, the synchronization signal block resource that the node actually transmits the synchronization signal block in the time frame of the subframe.
6. The method of claim 3, wherein the determining, according to the attribute information of the node and the correspondence, the time domain location of the node to send the synchronization signal block, comprising at least one of the following:

   Determining, according to the cell identity and the level of the node, and the corresponding relationship, a field time window of the node transmitting the synchronization signal block;

   Determining, according to the cell identifier and the level of the node, and the corresponding relationship, the time slot occupied by the node actually transmitting the synchronization signal block in the time frame of the field;

   Determining, according to the cell identity and the level of the node, and the corresponding relationship, the synchronization signal block resource occupied by the node actually transmitting the synchronization signal block in the time frame of the field.
7. The method of claim 4, wherein the determining, according to the intra-cell group identifier and the corresponding relationship of the node, the location of the field time window in which the node sends the synchronization signal block comprises:

   When the value of the node a is identified as a value a, it is determined that the synchronization signal block is transmitted in the bth field within the synchronization signal block transmission period;

   Where a=0, 1, 2, b is at least one integer from 1 to M, and M is the total number of all fields in a synchronization signal block transmission period.
8. The method of claim 4, wherein the determining, according to the cell identifier of the node and the correspondence, the location of a field time window in which the node sends the synchronization signal block comprises:

   When the cell identifier of the node belongs to the c-th cell identifier set, determining to transmit the synchronization signal block in the b-th field within the synchronization signal block transmission period;

   Where c = 1, 2, ..., N, b is at least one integer from 1 to M, N is the total number of cell identification sets, and M is the total number of all fields in a synchronization signal block transmission period.
9. The method of claim 4, wherein the determining, according to the level of the node and the correspondence, the location of the field time window in which the node transmits the synchronization signal block comprises:

   In a case where the remainder of the node is modulo X, the remainder is n, and it is determined that the synchronization signal block is transmitted in the bth field within the synchronization signal block transmission period;

   Where n=0,1,2,...,X-1,b is at least one integer from 1 to M, X is the total number of node level sets, and M is all fields in a synchronization signal block transmission period total.
10. The method according to claim 4, wherein the determining, according to the intra-cell group identifier and the corresponding relationship of the node, the synchronization signal block resource that the node actually transmits the synchronization signal block in the time frame of the field, including:

    When the value of the node a is identified as a value a, it is determined that the d-th synchronization signal block resource set transmission synchronization signal block is occupied in the field time window;

    Where a=0, 1, 2, d is at least one integer from 1 to D, and D is the total number of all synchronization signal block resource sets in the half-frame time window.
11. The method according to claim 4, wherein the determining, according to the cell identifier of the node and the corresponding relationship, the synchronization signal block resource that the node actually transmits the synchronization signal block in the time frame of the field, including:

    When the cell identifier of the node belongs to the fth cell identifier set, determining to occupy the dth synchronization signal block resource set transmission synchronization signal block in the field time window;

    Wherein f=1, 2, . . . , F, d is at least one integer from 1 to D, F is the total number of cell identification sets, and D is the total number of all synchronization signal block resource sets in the field time window.
12. The method of claim 4, wherein the determining, according to the level of the node and the correspondence, the synchronization signal block resource that the node actually transmits the synchronization signal block in the time frame of the field, includes:

    In the case that the remainder of the node is modulo Y and the remainder is n, it is determined that the d-th synchronization signal block resource set transmission synchronization signal block is occupied in the half-frame time window;

    Where n=0,1,2,...,Y-1,d is at least one integer from 1 to D, Y is the total number of node level sets, and D is all sync block resources in the field time window The total number of collections.
13. The method of claim 4, wherein the determining, according to the intra-cell group identifier and the corresponding relationship of the node, the time slot occupied by the node actually transmitting the synchronization signal block in the time frame of the field, comprising:

    In the case that the value is a in the cell group of the node, it is determined that the synchronization signal block is transmitted by occupying the e-th slot set in the field time window;

    Where a=0, 1, 2, e is at least one integer from 1 to E, and E is the total number of all time slot sets in the field time window.
14. The method of claim 4, wherein the determining, according to the cell identifier of the node and the corresponding relationship, the time slot that the node actually transmits the synchronization signal block in the time frame of the field, including:

    When the cell identifier of the node belongs to the gth cell identifier set, determining to occupy the e-th slot set to send the synchronization signal block in the field time window;

    Where g = 1, 2, ..., G, e is at least one integer from 1 to E, G is the total number of cell identification sets, and E is the total number of all time slot sets in the field time window.
15. The method of claim 4, wherein the determining, according to the level of the node and the corresponding relationship, the time slot that the node actually transmits the synchronization signal block within the time frame of the field, includes:

    In the case that the remainder of the node is modulo Z after the modulo is n, it is determined that the e-th slot set is used to transmit the synchronization signal block in the field time window;

    Where n = 0, 1, 2, ..., Z-1, e is at least one integer from 1 to E, Z is the total number of node level sets, and E is the set of all time slots in the half frame time window total.
16. The method of any of claims 1 to 15, wherein

    The correspondence between the node attribute information and the time domain location of the synchronization signal block is specified by a protocol, or is configured by an upper node of the node.
17. The method of any of claims 1 to 15, wherein the node is a fused access and backhaul IAB node in a multi-hop network.
18. A time domain location information determining apparatus includes:

    Corresponding relationship determining module is configured to determine a correspondence between node attribute information and a time domain position of the synchronization signal block;

    The time domain location determining module is configured to determine a time domain location of the node to send the synchronization signal block according to the node attribute information of the node and the correspondence.
19. The device of claim 18, wherein

    The node attribute information includes at least one of the following:

    The cell ID of the node;

    The identifier of the cell group of the node;

    The level of the node;

    The synchronization signal block time domain location includes at least one of the following:

    The half-frame time window position at which the node transmits the synchronization signal block;

    The node actually transmits the time slot occupied by the synchronization signal block within the field time window;

    The node actually transmits the sync block resource occupied by the sync signal block within the field time window.
20. The device according to claim 18 or 19, wherein

    The node is a converged access and backhaul IAB node in a multi-hop network.
21. A time domain location information determining apparatus includes:

    a memory, a processor, and a time domain location information determining program stored on the memory and operable on the processor, the time domain location information determining program being executed by the processor to implement the above claims 1-17 The time domain location information determining method according to any one of the preceding claims.
22. A computer readable storage medium storing a time domain location information determining program, the time domain location information determining program being executed by a processor to implement any of the above claims 1-17 Time domain location information determination method.

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