CN110475236B

CN110475236B - Time domain position information determining method and device

Info

Publication number: CN110475236B
Application number: CN201810448457.7A
Authority: CN
Inventors: 刘星; 毕峰; 邢卫民
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2018-05-11
Filing date: 2018-05-11
Publication date: 2022-01-25
Anticipated expiration: 2038-05-11
Also published as: CN110475236A; WO2019214670A1

Abstract

A method and an apparatus for determining time domain position information are disclosed. The time domain position information determining method comprises the following steps: determining the corresponding relation between the node attribute information and the time domain position of the synchronous signal block; and determining the time domain position of the synchronization signal block sent by the node according to the node attribute information of the node and the corresponding relation. The technical scheme can avoid resource conflict when the nodes in the multi-hop network transmit the synchronous signal blocks, thereby realizing the discovery of the adjacent nodes by detecting the synchronous signal blocks.

Description

Time domain position information determining method and device

Technical Field

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

Background

With the continuous progress of radio technology, various radio services emerge in large quantities, and the spectrum resources supported by the radio services are limited, so that the spectrum resources between 300MHz and 3GHz mainly used by the traditional commercial communication show a very tight situation in the face of the continuous increase of the bandwidth requirements of people, and the requirements of the future wireless communication cannot be met. The development history of mobile communication shows that cell splitting, larger bandwidth and higher spectrum efficiency are three major pillars of system capacity improvement.

The 4th Generation (abbreviated as 4G) communication system obtains cell splitting gain through a Heterogeneous Network (HetNet). In the HetNet network, low power Transmission Points (TPs) are deployed flexibly and sparsely within the coverage area of a Macro Cell base station (Macro Cell eNodeB or eNB), forming a multi-layer network composed of Macro cells and Small cells (Small cells). The HetNet can not only ensure the coverage, but also improve the flexibility of cell splitting and the system capacity, share the service pressure of the macro cell, and also can expand the coverage area of the macro cell. In the Relay (Relay) technology in the 3GPP release10 stage, a Relay Node (RN) is connected to a base station by radio to implement backhaul, and provides a service to a subordinate terminal by using the identity of the "base station". In the two-hop network, due to the limitations of RN self-interference, duplex mode and other factors, a "backhaul link from RN to base station" and an "access link from RN to terminal" are multiplexed in a time division manner. In the current standardization of 5th-Generation (5G) wireless communication systems, Integrated Access and Backhaul (IAB) technology is proposed, and multi-hop networks are expected to be supported in the 5G wireless communication systems.

Compared with the 4G system and the earlier communication system, in the fifth generation (5G) wireless communication system in the future, a higher carrier frequency is used for communication, such as 28GHz, 45GHz, and the like, such a high frequency channel has the disadvantages of large free propagation loss, easy oxygen absorption, large influence by rain attenuation, and the like, and the coverage performance of the high frequency communication system is seriously influenced. Because the carrier frequency corresponding to the high-frequency communication has shorter wavelength, more antenna elements can be contained in a unit area, and the more antenna elements mean that the antenna gain can be improved by adopting a beam forming method, so that the coverage performance of the high-frequency communication is ensured.

After the beam forming method is adopted, the transmitting end can concentrate the transmitting energy in a certain direction, and the energy in other directions is little or none, that is, each beam has own directivity, each beam can only cover the terminal in a certain direction, and the transmitting end, that is, the base station, needs to transmit a plurality of beams to complete the all-round coverage.

In the related art, a preliminary beam direction measurement and identification is generally performed during a process of initially accessing a network by a terminal, and with a structure as shown in fig. 1, each mesh is defined as a Synchronization Signal/Physical Broadcast Channel block (SS/PBCH) block, and in each Synchronization Signal/Physical Broadcast Channel block, a Synchronization Signal, system information, and a corresponding Demodulation Reference Signal (Demodulation Reference Signal, abbreviated as DMRS/port measurement Reference Signal, etc. may be transmitted on a plurality of beams or ports according to the number of radio frequency chains of a base station. The terminal identifies the preferred downlink transmitting beam or port by measuring the synchronous signal, acquiring the system information and measuring the optional measurement reference signal, acquires the cell basic information and accesses the configuration information, thereby accessing the network.

In a synchronous broadcast sending period (or called as a synchronization signal/physical broadcast channel window set periodicity), a plurality of synchronization signal/physical broadcast channel block resources are defined, the time domain positions of the synchronization signal/physical broadcast channel block resources are fixed, the base station can select part or all of the resources for actually transmitting the synchronization signal/physical broadcast channel block, and poll beams/ports transmitted by the base station side once in the period of one SS/PBCH burst set, so that the terminal can measure and identify a preferred beam or port and realize downlink synchronization with the network.

For a multi-hop network under the IAB technology, such as the two-hop network shown in fig. 2, a node having a wired backhaul link with a core network is called an IAB donor (or called an IAB host base station), and the IAB donor may obtain downlink data or send the uplink data to the core network. A station connected to the IAB donor (or to an upper node thereof) by radio is called an IAB node (IAB node). Since the IAB node does not have a direct link with the core network, its interaction with the core network needs to be forwarded one or more times and finally realized by means of the IAB donor.

In order to discover neighboring nodes, the IAB node needs to measure reference signals sent by the IAB node and the neighboring IAB node, and therefore, how to discover and measure the neighboring nodes in the IAB network is a problem to be considered.

Disclosure of Invention

The technical problem to be solved by the embodiments of the present invention is to provide a method and an apparatus for determining time domain position information, which can avoid resource conflict when a node in a multihop network transmits a synchronization signal block, thereby realizing that a neighboring node is found by detecting the synchronization signal block.

The embodiment of the invention provides a method for determining time domain position information, which comprises the following steps:

determining the corresponding relation between the node attribute information and the time domain position of the synchronous signal block;

and determining the time domain position of the synchronization signal block sent by the node according to the node attribute information of the node and the corresponding relation.

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

the corresponding relation determining module is used for determining the corresponding relation between the node attribute information and the time domain position of the synchronous signal block;

and the time domain position determining module is used for determining the time domain position of the synchronization signal block sent by the node according to the node attribute information of the node and the corresponding relation.

the time domain position information determining method comprises a memory, a processor and a time domain position information determining program which is stored on the memory and can run on the processor, wherein the time domain position information determining program realizes the steps of the time domain position information determining method when being executed by the processor.

An embodiment of the present invention provides a computer-readable storage medium, where a time domain position information determining program is stored on the computer-readable storage medium, and when the time domain position information determining program is executed by a processor, the steps of the time domain position information determining method are implemented.

Compared with the related art, the method and the device for determining the time domain position information provided by the embodiment of the invention determine the corresponding relation between the node attribute information and the time domain position of the synchronization signal block, and determine the time domain position of the synchronization signal block sent by the node according to the node attribute information of the node and the corresponding relation.

Drawings

FIG. 1 is a diagram illustrating a synchronization signal/physical broadcast channel window group period in the prior art;

fig. 2 is a schematic diagram of a multi-hop network under an IAB technology in the prior art;

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

fig. 4 (a) - (b) are schematic time domain position diagrams of the synchronization signal block in embodiment 1 of the present invention;

fig. 5(a) to fig. 5(e) are schematic diagrams of mapping patterns of a synchronization signal block (SS/PBCH block, abbreviated as SSB) in a timeslot according to embodiment 1 of the present invention;

fig. 6 is a time domain position of a timeslot including SSB transmission resources within a 5ms time window according to embodiment 1 of the present invention;

fig. 7 shows the time domain positions of the 5ms time window containing the SSB in the 20ms transmission period according to embodiment 1 of the present invention;

fig. 8 is a schematic diagram of a time domain position information determining apparatus according to embodiment 2 of the present invention;

FIG. 9 is a schematic diagram illustrating the time domain position of a half frame containing SSBs in a 20ms transmission period according to the cell group identifier in example 1 of the present invention;

fig. 10 is a schematic diagram of the hierarchical relationship of IAB nodes in a multihop network in example 3 of the present invention;

fig. 11 is a schematic diagram of the SSB transmission resource position corresponding to the SSB transmission resource actually used in the 5ms time window determined according to the cell group identifier in example 4 of the present invention;

fig. 12 is a schematic diagram of the slot positions occupied by the SSB transmission resources actually used within the 5ms time window determined according to the hierarchical relationship of the IAB nodes in example 5 of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.

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 the corresponding relation between the node attribute information and the time domain position of the synchronous signal block;

step S320, determining the time domain position of the synchronization signal block sent by the node according to the node attribute information of the node and the corresponding relation;

in one embodiment, the Synchronization Signal blocks are abbreviated Synchronization Signal/Physical Broadcast Channel (SS) blocks, and each Synchronization Signal block may include a Synchronization Signal and a Physical Broadcast Channel (and a corresponding demodulation reference Signal), or may include only a Synchronization Signal, or may include only a Physical Broadcast Channel (and a corresponding demodulation reference Signal).

In one embodiment, the node attribute information includes at least one of:

a cell identity of the node;

identifying the node in the cell group;

a hierarchy of nodes.

The cell identification (cell ID) of a node corresponds to a synchronization signal sequence one by one, wherein the synchronization signal includes a Primary Synchronization Signal (PSS) and a Secondary Synchronization Signal (SSS); the cell group identifiers of the nodes correspond to the primary synchronization signals one by one; the hierarchy of nodes may be used to describe the relative positions of the nodes in the network, and in a multi-hop network, the hierarchy of nodes having a wired connection to the core network is defined as one level; the hierarchy of the lower-layer node directly connected with the first-level node is defined as a second level; the hierarchy of the lower-layer node of the secondary node is defined as three levels, and so on; in this case, the level of the node may also be referred to as a hop level (hop level) of the node; alternatively, the hierarchy of nodes may be configured values that do not match the relative positions of the nodes in the network, e.g., the node is configured with its hierarchy by its upper nodes.

In one embodiment, the synchronization signal block time domain position comprises at least one of:

the node sends the position of a half-frame time window of a synchronous signal block;

the node actually sends a time slot occupied by a synchronous signal block in a half-frame time window;

and the node actually sends the synchronization signal block resources occupied by the synchronization signal blocks in the half-frame time window.

Wherein, the position of the half-frame time window for transmitting the synchronization signal block refers to: which field within the synchronization signal block transmission period (e.g., 20ms) transmits the synchronization signal block;

wherein, the synchronization signal block resource refers to: time-frequency domain resources for transmitting synchronization signal blocks, wherein, in the frequency domain, the synchronization signal blocks occupy 20 RBs (Resource Block) or 24 RBs; in the time domain, each synchronization signal block occupies four symbols, and as shown in fig. 5(a) -5 (e), a set of time domain resources potentially used for transmitting the synchronization signal block is predefined for different synchronization signal block subcarrier intervals.

In one embodiment, the correspondence between the node attribute information and the time domain position of the synchronization signal block is specified by a protocol or 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 one embodiment, the determining, according to the attribute information of the node and the correspondence, a time domain position of a synchronization signal block sent by the node includes at least one of:

determining the position of a half-frame time window of a synchronization signal block sent by a node according to the identification in the cell group of the node and the corresponding relation;

determining the position of a half-frame time window for the node to send a synchronous signal block according to the cell identifier of the node and the corresponding relation;

determining the position of a half-frame time window of a synchronization signal block sent by a node according to the level of the node and the corresponding relation;

determining the synchronous signal block resources occupied by the nodes for actually sending the synchronous signal blocks in a half-frame time window according to the cell group identifiers of the nodes and the corresponding relation;

determining the synchronous signal block resources occupied by the nodes for actually sending the synchronous signal blocks in a half-frame time window according to the cell identifiers of the nodes and the corresponding relation;

determining the synchronous signal block resources occupied by the nodes for actually sending the synchronous signal blocks in a half-frame time window according to the levels of the nodes and the corresponding relation;

determining the time slot occupied by the node for actually sending the synchronous signal block in a half-frame time window according to the cell group identification of the node and the corresponding relation;

determining the time slot occupied by the node for actually sending the synchronous signal block in a half-frame time window according to the cell identification of the node and the corresponding relation;

and determining the time slot occupied by the node for actually sending the synchronous signal block in the half-frame time window according to the hierarchy of the node and the corresponding relation.

determining a half-frame time window of a synchronization signal block sent by a node according to the identifier and the level in the cell group of the node and the corresponding relation;

determining the time slot occupied by the node for actually sending the synchronous signal block in a half-frame time window according to the identification and the level in the cell group of the node and the corresponding relation;

and determining the synchronization signal block resources occupied by the nodes for actually sending the synchronization signal blocks in the half-frame time window according to the cell group identifiers and the levels of the nodes and the corresponding relation.

determining a half-frame time window of a synchronization signal block sent by a node according to the cell identifier and the level of the node and the corresponding relation;

determining the time slot occupied by the node for actually sending the synchronous signal block in a half-frame time window according to the cell identification and the level of the node and the corresponding relation;

and determining the synchronization signal block resources occupied by the nodes for actually sending the synchronization signal blocks in the half-frame time window according to the cell identifiers and the levels of the nodes and the corresponding relation.

In one embodiment, the determining a half-frame time window position of a synchronization signal block sent by a node according to an intra-cell group identifier of the node and the correspondence includes:

when the identification in the cell group of the node is a numerical value a, determining to transmit the synchronous signal block in the b-th field in the synchronous signal block transmission period;

where a is 0,1,2, b is 1,2, M is the total number of all fields in a sync block transmission period.

The numerical value a and the numerical value b can be in a one-to-one correspondence relationship, that is, each numerical value a corresponds to a unique numerical value b; alternatively, the value a and the value b may be in a many-to-one relationship, that is, a plurality of different values a correspond to a unique value b; alternatively, the value a and the value b may be in a one-to-many relationship, that is, one value a corresponds to a plurality of values b.

For example, when the cell group identifier of the IAB node is 0, it is determined that the synchronization signal block is transmitted in the first half frame of the synchronization signal block transmission period; when the mark in the cell group of the IAB node is 1, determining to transmit the synchronous signal block in the second half frame in the synchronous signal block transmission period; when the cell group of the IAB node is marked as 3, the synchronous signal block is determined to be transmitted in the third half frame in the synchronous signal block transmission period.

In one embodiment, the determining, according to the cell identifier of the node and the correspondence, a half-frame time window position at which the node transmits a synchronization signal block includes:

when the cell identification of the node belongs to the c-th cell identification set, determining to transmit the synchronous signal block in the b-th half frame in the synchronous signal block transmission period;

where c is 1,2,., N, b is 1, 2., M, N is the total number of cell id sets, and M is the total number of all half frames in one synchronization signal block transmission period.

The numerical value c and the numerical value b can be in a one-to-one correspondence relationship, that is, each numerical value c corresponds to a unique numerical value b; alternatively, the value c and the value b may be in a many-to-one relationship, that is, a plurality of different values c correspond to a unique value b; alternatively, the value c and the value b may be in a one-to-many relationship, that is, one value c corresponds to a plurality of values b;

the cell identification set is formed by grouping a plurality of cell identifications, and each group of cell identifications corresponds to one cell identification 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 half frame of the synchronization signal block transmission period; when the cell identifier of the IAB node belongs to a second cell identifier set, determining to transmit the synchronous signal block in a second half frame in a synchronous signal block transmission period; when the cell identifier of the IAB node belongs to a third cell identifier set, determining to transmit the synchronous signal block in a third half frame in a synchronous signal block transmission period; when the cell identifier of the IAB node belongs to a fourth cell identifier set, determining to transmit the synchronous signal block in a fourth half frame in a synchronous signal block transmission period;

wherein the first set of cell identities may be {0,1,2 … 251}, the second set of cell identities may be {252,253,254 252,253,254 … 503}, the third set of cell identities may be {504,505,506 … 755}, and the fourth set of cell identities may be {756,757,758 … 1007 }.

In one embodiment, the determining a half-frame time window position of a synchronization signal block transmitted by a node according to a hierarchy of the node and the correspondence includes:

when the remainder is n after the node level modulo X, determining to send the synchronous signal block in the b-th half frame in the synchronous signal block transmission period;

where n is 0,1, 2., X-1, b is 1, 2., M, X is the total number of node level sets, and M is the total number of all half frames in a sync block transmission period.

The numerical value n and the numerical value b can be in a one-to-one correspondence relationship, that is, each numerical value n corresponds to a unique numerical value b; alternatively, the value n and the value b may be in a many-to-one relationship, that is, a plurality of different values n correspond to a unique value b; alternatively, the value n and the value b may be in a one-to-many relationship, that is, one value n corresponds to a plurality of values b.

The node level set is formed by grouping a plurality of node levels, and each group of node levels corresponds to one node level set; for example, there may be 9 node levels, and each node level set may contain 3 node levels.

For example, when the remainder is 1 after modulo 4 by the IAB node level of the IAB node, it is determined that the synchronization signal block is transmitted in the first half frame in the synchronization signal block transmission period; when the remainder is 2 after the IAB node level of the IAB node modulo 4, determining to transmit the synchronous signal block in the second half frame in the synchronous signal block transmission period; when the remainder is 3 after the IAB node level of the IAB node modulo 4, determining to transmit the synchronous signal block in the third half frame in the synchronous signal block transmission period; when the remainder is 0 after the IAB node level of the IAB node modulo 4, determining to transmit the synchronous signal block in the fourth half frame in the synchronous signal block transmission period; the IAB node hierarchy corresponds to an IAB donor (IAB host base station) when being a first level, the next level of the first level is a second level, the next level of the second level is a third level, and the next level of the third level is a fourth level.

In one embodiment, the determining, according to the cell group identifier of the node and the correspondence, a synchronization signal block resource occupied by the node for actually sending a synchronization signal block within a half-frame time window includes:

when the mark in the cell group of the node is a numerical value a, determining that the d-th synchronization signal block resource set is occupied in a half-frame time window to send the synchronization signal block;

where a is 0,1,2, D is the total number of all sets of resources of the synchronization signal block within the half-frame time window.

The numerical value a and the numerical value d can be in a one-to-one correspondence relationship, that is, each numerical value a corresponds to a unique numerical value d; alternatively, the value a and the value d may be in a many-to-one relationship, that is, a plurality of different values a correspond to a unique value d; alternatively, the value a and the value d may be in a one-to-many relationship, that is, one value a corresponds to a plurality of values d.

For example, when the identifier in the cell group of the IAB node is 0, it is determined that the first synchronization signal block resource set is occupied in a field time window to transmit the synchronization signal block; when the mark in the cell group of the IAB node is 1, determining that a second synchronous signal block resource set is occupied in a half-frame time window to transmit the synchronous signal block; when the mark in the cell group of the IAB node is 2, determining to occupy a third synchronization signal block resource set in a half frame time window to transmit the synchronization signal block;

wherein the first set of synchronization signal block resources comprises a first synchronization signal block resource, a fourth synchronization signal block resource, and a seventh synchronization signal block resource; the second set of synchronization signal block resources comprises a second synchronization signal block resource, a fifth synchronization signal block resource, and an eighth synchronization signal block resource; the third set of synchronization signal block resources comprises 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 eight potential resources for transmitting the synchronization signal block, and are sequentially defined as the first synchronization signal block resource to the eighth synchronization signal block resource according to the time sequence.

In one embodiment, the determining, according to the cell identifier of the node and the correspondence, a synchronization signal block resource occupied by the node for actually sending a synchronization signal block within a half-frame time window includes:

when the cell identification of the node belongs to the f cell identification set, determining that the d synchronous signal block resource set is occupied in a half-frame time window to send the synchronous signal block;

wherein, F is 1,2,., F, D is 1,2,., D, F is the total number of the cell identification set, D is the total number of all the synchronization signal block resource sets within the half-frame time window;

the numerical values f and the numerical values d can be in a one-to-one correspondence relationship, that is, each numerical value f corresponds to a unique numerical value d; alternatively, the value f and the value d may be in a many-to-one relationship, that is, a plurality of different values f correspond to a unique value d; alternatively, the value f and the value d may be in a one-to-many relationship, that is, one value f corresponds to a plurality of values d.

In one embodiment, the determining, according to the hierarchy of the node and the correspondence, a synchronization signal block resource occupied by the node for actually transmitting a synchronization signal block within a half-frame time window includes:

when the remainder is n after the node level modulo Y, determining that the d-th synchronization signal block resource set is occupied in a half-frame time window to send the synchronization signal block;

wherein n is 0,1, 2., Y-1, D is 1, 2., D, Y is the total number of node level sets, D is the total number of all synchronization signal block resource sets within the half-frame time window;

the numerical value n and the numerical value d can be in a one-to-one correspondence relationship, that is, each numerical value n corresponds to a unique numerical value d; alternatively, the value n and the value d may be in a many-to-one relationship, that is, a plurality of different values n correspond to a unique value d; alternatively, the value n and the value d may be in a one-to-many relationship, that is, one value n corresponds to a plurality of values d;

in one embodiment, the determining, according to the cell group identifier of the node and the correspondence, a time slot occupied by the node for actually sending a synchronization signal block within a half-frame time window includes:

when the mark in the cell group of the node is a numerical value a, determining that the e-th time slot set is occupied in a half-frame time window to send the synchronous signal block;

where a is 0,1,2, E is the total number of all timeslot sets in the half-frame time window, and the value a and the value E have a one-to-one correspondence relationship.

The numerical value a and the numerical value e can be in a one-to-one correspondence relationship, that is, each numerical value a corresponds to a unique numerical value e; or, the value a and the value e may be in a many-to-one relationship, that is, a plurality of different values a correspond to a unique value e; alternatively, the value a and the value e may be in a one-to-many relationship, that is, one value a corresponds to a plurality of values e.

In one embodiment, the determining, according to the cell identifier of the node and the correspondence, a time slot occupied by the node for actually sending a synchronization signal block within a half-frame time window includes:

when the cell identification of the node belongs to the g cell identification set, determining that the e time slot set is occupied in a half frame time window to send the synchronous signal block;

where G1, 2,., G, E1, 2,., G is the total number of cell identification sets, and E is the total number of all timeslot sets within a half-frame time window.

The values g and the values e can be in a one-to-one correspondence relationship, that is, each value g corresponds to a unique value e; or, the value g and the value e may be in a many-to-one relationship, that is, a plurality of different values g correspond to a unique value e; alternatively, the value g and the value e may be in a one-to-many relationship, that is, one value g corresponds to a plurality of values e;

in one embodiment, the determining, according to the hierarchy of the node and the correspondence, a time slot occupied by the node for actually sending a synchronization signal block within a half-frame time window includes:

when the remainder is n after the node level modulo Z, determining that the e-th time slot set is occupied in a half-frame time window to send the synchronous signal block;

where n is 0,1, 2., Z-1, E is 1, 2., E, Z is the total number of node level sets, and E is the total number of all slot sets within the half-frame time window.

The numerical value n and the numerical value e can be in a one-to-one correspondence relationship, that is, each numerical value n corresponds to a unique numerical value e; or, the value n and the value e may be in a many-to-one relationship, that is, a plurality of different values n correspond to a unique value e; alternatively, the value n and the value e may be in a one-to-many relationship, that is, one value n corresponds to a plurality of values e.

For example, when the remainder is 1 after modulo 4 by the IAB node level of the IAB node, it is determined that the time slot 0 is occupied in the half-frame time window to transmit the synchronization signal block; when the remainder is 2 after the IAB node level of the IAB node modulo 4, determining that the time slot 1 is occupied in a half-frame time window to transmit the synchronous signal block; when the remainder is 3 after the IAB node level of the IAB node modulo 4, determining to occupy a time slot 2 in a half-frame time window to transmit the synchronous signal block; when the remainder is 0 after the IAB node level of the IAB node modulo 4, determining to occupy a time slot 3 in a half-frame time window to transmit the synchronous signal block;

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

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

Some physical concepts in the present embodiment are explained below.

In this embodiment, a synchronization signal/physical broadcast channel block (SS/PBCH block, abbreviated as SSB) is used to carry time-frequency resources of access-related signal channels such as synchronization signals and/or physical broadcast channels (and corresponding demodulation reference signals DMRSs); each synchronization signal block may contain a synchronization signal and a physical broadcast channel (and a corresponding demodulation reference signal), or in some embodiments, only a synchronization signal, or in some embodiments, only a physical broadcast channel (and a corresponding demodulation reference signal).

Fig. 4 (a) and fig. 4 (b) are schematic diagrams of a Synchronization signal Block (SS/PBCH Block, abbreviated as SSB), where the Synchronization signal Block generally includes 4 symbols, and a primary Synchronization signal pss (primary Synchronization signal) and a secondary Synchronization signal SSs (secondary Synchronization signal) are respectively carried on the first and third symbols, and Synchronization signal sequences are respectively mapped on 127 Resource Elements (RE) in 12 Physical Resource Blocks (PRB). As shown in fig. 4 (a), in some configurations, the physical broadcast channel PBCH is carried only on the second and fourth symbols within the synchronization signal block, and occupies 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 within the synchronization signal block, and the number of occupied PRBs on each symbol is as follows: and on the second symbol and the fourth symbol, 20 PRBs are occupied, and on the third symbol, PBCH occupies 4 PRBs on both sides of the secondary synchronization signal, and the total number of the PRBs is 8. Under the above configuration, the synchronization signal is aligned with the center frequency of the PBCH. The synchronization signal block (SS/PBCH block) can also be extended to a time domain structure with more symbols, for example, adding one to two PBCH symbols on the basis of fig. 4 (a) and fig. 4 (b), so as to carry more broadcast information. The added symbols may be inserted anywhere in the existing 4-symbol synchronization signal block (SS/PBCH block) structure.

A plurality of synchronization signal blocks (SS/PBCH blocks) form a synchronization signal window group (SS/PBCH burst set), and the structure is a scanning (scanning) resource for transmitting synchronization signals and physical broadcast channels, wherein each synchronization signal block (SS/PBCH block) in the synchronization signal window group carries the synchronization signals of a specific beam/port (group), and the synchronization signal window group completes one beam scanning, namely completes the 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, a data channel, and other signals. Since a plurality of sync signal blocks are mapped to the same subframe, the offsets of different sync signal blocks relative to the subframe boundary are different, and terminals at different positions may successfully detect a sync signal in any one sync signal block, the terminal needs to know the time domain index (time index) information currently synchronized to the sync signal block in order to complete subframe timing.

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

case A: as shown in fig. 5(a), an SSB mapping pattern corresponding to 15kHz subcarrier spacing illustrates transmission resources of each SSB, and two SSBs are included in one 15kHz slot (i.e., 14 15kHz symbols (symbols)), each occupying 4 15kHz symbols, and are mapped on symbol 2-symbol 5 and symbol 8-symbol 11, respectively.

Case B: as shown in fig. 5(b), an SSB mapping pattern corresponding to 30kHz subcarrier spacing illustrates transmission resources of each SSB, which includes 4 SSBs in two 30kHz slots (slots) (i.e., 28 30kHz symbols (symbols)), each occupying 4 30kHz symbols, and is mapped to symbol 4-symbol 7, symbol 8-symbol 11 in the first slot and symbol 2-symbol 5, symbol 6-symbol 9 in the second slot, respectively.

Case C: as shown in fig. 5(c), another SSB mapping pattern corresponding to 30kHz subcarrier spacing illustrates transmission resources of each SSB, which includes 4 SSBs in two 30kHz slots (i.e., 28 30kHz symbols (symbols)), each occupying 4 30kHz symbols, and is mapped to symbol 2-symbol 5, symbol 8-symbol 11 in the first slot and symbol 2-symbol 5, symbol 8-symbol 11 in the second slot, respectively.

Case D: as shown in fig. 5(d), an SSB mapping pattern corresponding to 120kHz subcarrier spacing illustrates transmission resources of each SSB, which includes 4 SSBs in two 120kHz slots (i.e., 28 120kHz symbols (symbols)), each occupying 4 120kHz symbols, and is mapped to symbol 4-symbol 7, symbol 8-symbol 11 in the first slot and symbol 2-symbol 5, symbol 6-symbol 9 in the second slot, respectively.

Case E: as shown in fig. 5(e), an SSB mapping pattern corresponding to 240kHz subcarrier spacing illustrates transmission resources of each SSB, which includes 8 SSBs in two 120kHz slots (i.e., 56 240kHz symbols (symbols)), each occupying 4 240kHz symbols, and is mapped to symbol 8-symbol 11, symbol 12-symbol 15, symbol 16-symbol 19, symbol 20-symbol 23 of the first slot, and symbol 32-symbol 35, symbol 36-symbol 39, symbol 40-symbol 43, and symbol 44-symbol 47 of the second slot, respectively.

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

For different frequency band ranges, the maximum number of SSB transmission resources is different, and for the frequency range below 3GHz, the maximum number is 4; for the frequency range between 3GHz and 6GHz, the maximum number is 8; the maximum number is 64 for frequency ranges above 6 GHz. To support the above number of SSB transmission resources, the SSB mapping pattern will last for a number of slots. Specifically, as shown in fig. 6, all slots (slots) containing SSB transmission resources are concentrated within a 5ms time window. For a 15kHz subcarrier spacing, when the maximum SSB number L is 4, two slots of the 15kHz subcarrier spacing are needed to map 4 SSB transmission resources, i.e. occupy the first 2ms of a certain half frame (5 ms). The time domain position of the slot containing the SSB transmission resource within the 5ms time window is also given in the figure in turn for different combinations of subcarrier spacing and maximum number of SSBs ({15kHz, L-8 }, {30kHz, L-4 }, {30kHz, L-8 }, {120kHz, L-64 }, {240kHz, L-64 }).

The SSB mapping pattern is a potential location of SSB transmission, and the base station may select a required number of SSB transmission resources for actual transmission of SSBs, that is, the SSB transmission resources are the maximum value of the actual transmission number of SSBs in one period, and may select some or all of the transmission resources to actually transmit SSBs.

In addition, the transmission period of the SSB includes the following values: 5ms, 10ms, 20ms, 40ms, 80ms, 160 ms. For the carrier supporting the initial access, the terminal performs SSB detection and combined reception according to the SSB transmission period of 20ms, so that the actual transmission period of the SSB can only be less than or equal to 20ms, for example, 5ms, 10ms, or 20 ms. When the SSB transmission period is 20ms, the 5ms time window containing the SSB may be configured within any 5ms of the 20ms transmission period. As shown in fig. 7, in 20ms (i.e. two adjacent radio frames), 4 half frames are included, and the SSB is configured in the first half frame. At this time, the SSB is also transmitted in the first half frame in other periods. Similarly, SSBs may be arranged in other identical fields in each period. When the SSB transmission period is 10ms, the 5ms time window containing the SSB may be configured as an odd field, or an even field within the 20ms transmission period. When the SSB transmission period is 5ms, each half frame within the 20ms transmission period contains an SSB.

Example 2

As shown in fig. 8, an embodiment of the present invention provides a time domain position information determining apparatus, including:

a correspondence determining module 801, configured to determine a correspondence between node attribute information and a time domain position of a synchronization signal block;

a time domain position determining module 802, configured to determine, according to node attribute information of a node and the correspondence, a time domain position of a synchronization signal block sent by the node;

in one embodiment, the node attribute information includes at least one of:

a cell identity of the node;

identifying the node in the cell group;

a hierarchy of nodes.

In an embodiment, the time domain position determining module is configured to determine, according to the attribute information of the node and the correspondence, a time domain position of a synchronization signal block sent by the node in at least one of the following manners:

A time domain position determining module, configured to determine, according to the attribute information of the node and the correspondence, a time domain position of a synchronization signal block sent by the node in at least one of the following manners:

In an embodiment, the time domain position determining module is configured to determine, according to the intra-cell group identifier of the node and the correspondence, a half-frame time window position of a synchronization signal block sent by the node according to the following manner:

In an embodiment, the time domain position determining module is configured to determine, according to a cell identifier of a node and the correspondence, a half-frame time window position of a synchronization signal block sent by the node according to the following manner:

In one embodiment, the time domain position determining module is configured to determine, according to a hierarchy of a node and the correspondence, a half-frame time window position of a synchronization signal block sent by the node according to the following manner:

In one embodiment, the time domain position determining module is configured to determine, according to the cell group identifier of the node and the correspondence, a synchronization signal block resource occupied by a synchronization signal block actually sent by the node within a half-frame time window by using the following method:

In an embodiment, the time domain position determining module is configured to determine, according to a cell identifier of a node and the correspondence, a synchronization signal block resource occupied by a synchronization signal block actually sent by the node within a half-frame time window by using the following method:

where F is 1,2,., F, D is 1,2,., D, F is the total number of the cell identification set, and D is the total number of all the synchronization signal block resource sets within the half-frame time window.

In an embodiment, the time domain position determining module is configured to determine, according to a hierarchy of a node and the correspondence, a synchronization signal block resource occupied by the node for actually sending a synchronization signal block within a half-frame time window by using the following method:

where n is 0,1, 2., Y-1, D is 1, 2., D, Y is the total number of node level sets, and D is the total number of all sets of synchronization signal block resources within the half-frame time window.

In an embodiment, the time domain position determining module is configured to determine, according to the cell group identifier of the node and the correspondence, a time slot occupied by the node for actually sending the synchronization signal block within the half-frame time window by using the following method:

where a is 0,1,2, E is the total number of all timeslot sets within a half-frame time window.

In an embodiment, the time domain position determining module is configured to determine, according to a cell identifier of a node and the correspondence, a time slot occupied by the node for actually sending a synchronization signal block within a half-frame time window by using the following method:

In an embodiment, the time domain position determining module is configured to determine, according to a hierarchy of a node and the correspondence, a time slot occupied by the node for actually sending a synchronization signal block within a half-frame time window by using the following method:

Example 3

The embodiment of the invention provides a time domain position information determining device, which comprises:

a memory, a processor, and a time-domain position information determining program stored in the memory and operable on the processor, wherein the time-domain position information determining program, when executed by the processor, implements the steps of the time-domain position information determining method described in embodiment 1 above.

Example 4

An embodiment of the present invention provides a computer-readable storage medium, where a time domain position information determining program is stored on the computer-readable storage medium, and when the time domain position information determining program is executed by a processor, the steps of the time domain position information determining method described in embodiment 1 above are implemented.

The time domain position information determination method of the present application is further described below by some examples.

Example 1

To achieve staggering of transmission resources for synchronization signal blocks (SS/PBCH blocks, abbreviated SSBs) between adjacent IAB nodes, this example describes a method of determining the SSB transmission time domain position from the primary synchronization signal (i.e., intra-cell group ID).

The primary synchronization signal comprises three sequences of length 127 corresponding to different "Intra-cell group identifiers" (Intra-cell group IDs)

Each sequence corresponds to a different half frame in the 20ms SSB transmission period, as shown in fig. 9, with the intra-cell group flag being 0, i.e., the sequence is identified as a single-frame transmission

When, the SSB is carried in the first half frame of the 20ms transmission period (i.e., the first 5ms of the 20ms starting with the even radio frame start boundary); identification in cell group

Corresponding to the SSB being carried in the second half of the 20ms transmission period (i.e., the 6 th ms to the 10 th ms of the 20ms starting from the even radio Frame start boundary (e.g., SFN (System Frame Number) ═ 0)); identification in cell group

Corresponding to SSBs being carried in the third half of the 20ms transmission period (i.e., 11ms to 15ms within 20ms starting at an even radio frame start boundary). In fig. 9, the Initial BWP refers to a BWP (bandwidth part) carrying an Initial access-related channel signal, wherein the Initial access-related channel signal at least includes Remaining Minimum System Information (RMSI), which is also referred to as system information block 1(SIB1, system information block 1).

The correspondence between the identifier in the Cell group and the half frame in the 20ms transmission period may be specified by a protocol, or configured by an upper node of the IAB node to the IAB node, where the above correspondence is merely an example, and other correspondences are also supported.

The IAB node determines the time domain resource for sending the SSB (i.e., in which half frame the SSB is sent) by combining the cell ID of the IAB node according to the correspondence.

In this embodiment, the SSB transmission position is bound to the intra-cell group identifier, and since the neighboring IAB nodes are generally configured with different intra-cell group identifiers during network planning, in the above manner, the neighboring IAB nodes can transmit their respective SSBs in different half frames, thereby effectively implementing SSB transmission resource staggering, and supporting the IAB nodes to use the SSBs as measurement reference signals found by the neighboring nodes.

Example 2

In order to implement staggering of transmission resources of synchronization signal blocks (SS/PBCH blocks, abbreviated as SSBs) between adjacent IAB nodes, this example describes a method for determining a SSB transmission time domain position according to a cell identification cell ID (cell IDs correspond to synchronization signal sequences one to one, and synchronization signals include a primary synchronization signal and a secondary synchronization signal, which together determine the cell IDs).

The IAB node determines the correspondence between the cell ID and the time domain position of the transmission SSB (i.e., the correspondence of a half frame in a 20ms transmission period) according to the specification in the protocol or the configuration of the upper IAB node (or IAB node). For example, the following correspondence is predefined: the cell IDs are divided into N groups, each group of cell IDs corresponding to an SSB time domain location. Specifically, 1008 cell IDs may be divided into 4 groups, wherein,

cell IDs 0-251 correspond to SSBs carried in the first half-frame of a 20ms transmission period (i.e., the first 5ms of the 20ms starting at an even radio frame starting boundary);

cell IDs 252-503 are carried in the second half frame of the 20ms transmission period corresponding to SSB (i.e., the 6 th ms to the 10 th ms within 20ms starting from the even radio frame starting point boundary);

cell IDs 504-755 correspond to SSBs carried in the third half frame of the 20ms transmission period (i.e., 11ms to 15ms within 20ms starting at the even radio frame start boundary);

the cell IDs 756-1007 correspond to SSBs carried in the fourth half frame of a 20ms transmission period (i.e., the last 5ms of the 20ms starting with an even radio frame start boundary).

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

Example 3

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

As shown in fig. 10, relay from the IAB node to the UE may be via multiple IAB nodes. The time domain resource for transmitting the SSB is determined according to the hierarchy of the IAB nodes (including the IAB donor and the IAB node). For example, IAB nodor is defined as a first layer IAB node, and is defined as a second layer IAB node (i.e., IAB node1 in the figure), a third layer IAB node (i.e., IAB node2 in the figure), and so on, an nth layer IAB node (i.e., IAB node N-1 in the figure).

A correspondence between the IAB node level and the location of the 5ms SSB time window within the 20ms transmission period is defined, for example, as shown in table 1 below.

TABLE 1

One of the IAB nodes 1 is powered on, the terminal identity is used to discover and access the IAB node or other IAB nodes, the IAB node or other IAB node accessed by the IAB node1 is used as a parent IAB node (i.e., an upper IAB node) of the IAB node1, the parent IAB node indicates its own hierarchy to the IAB node1, and the IAB node1 adds one to the indicated hierarchy to obtain its own IAB node hierarchy. For example, IAB node1 has access to another IAB node2, and the IAB node2 is at level two, then the IAB node1 is at level three. The way in which an IAB node informs its tier to an IAB node accessing it may be by broadcast information notification, or by RRC dedicated signaling. Or implicitly indicated.

In the implicit indication manner, for example, according to the time domain position of the upper IAB node transmitting the SSB is the second half frame in the 20ms transmission period, therefore, according to the correspondence relationship in table 1, the IAB node1 determines that the level of the upper node thereof satisfies "N mod 4 ═ 2", and then the level of the IAB node1 satisfies "N mod 4 ═ 3", so as to determine that the SSB should be transmitted in the third half frame in the 20ms transmission period.

The IAB node1 may also determine the time domain position of the SSB transmitted by itself according to the time domain position of the SSB transmitted by the upper IAB node without determining the level of the upper IAB node, for example, if the time domain position of the SSB transmitted by the upper IAB node is the second half frame in the 20ms transmission period, the time domain position of the SSB transmitted by the IAB node1 is the third half frame in the 20ms transmission period.

The correspondence between the IAB node hierarchy and the SSB time domain location is only an example, and the correspondence specified in other protocols or the correspondence indicated by the upper IAB node may be used as a basis for determining the SSB time domain location of the IAB node.

Example 4

The slot level or SSB level resource staggering may be performed when different IAB nodes transmit a synchronization signal block (SS/PBCH block, abbreviated SSB) within the same 5ms time window. This example describes a method of determining the SSB transmission time domain location from the primary synchronization signal (i.e., the intra-cell group ID).

The master synchronization signal comprises three sequences of length 127, corresponding to different "intracell markers"

And defining the corresponding relation between the identifiers in different cell groups and the SSB transmission resources. As shown in fig. 11, taking the case that the subcarrier spacing is 15kHz and the number of SSB transmission resources in one period is 8 as an example, the flag in the cell group is 0, that is, the flag is 0

Selecting 1 st, 4th and 7 th SSB transmission resources to carry out SSB transmission; identification in cell group

Selecting 2 nd, 5th and 8 th SSB transmission resources to carry out SSB transmission; identification in cell group

And then, selecting the 3 rd and 6 th SSB transmission resources for SSB transmission.

The correspondence between the identifier in the Cell group and the SSB transmission resource may be specified by a protocol, or configured to the IAB node by an upper node of the IAB node, where the above correspondence is merely an example, and other correspondences are also supported.

The IAB node determines the time domain resource for sending the SSB (i.e. which SSB transmission resource is occupied to actually send the SSB) by combining the cell ID of the IAB node according to the correspondence.

In this example, the SSB transmission position is bound to the intra-cell group identifier, and since the neighboring IAB nodes generally configure different intra-cell group identifiers during network planning, in the above manner, the neighboring IAB nodes can transmit their respective SSBs in different time slots of the same half frame or different SSB transmission resources, so that the SSB transmission resource staggering can be effectively achieved, thereby supporting the IAB nodes to use the SSBs as measurement reference signals discovered by the neighboring nodes.

Example 5

The slot level or SSB level resource staggering may be performed when different IAB nodes transmit a synchronization signal block (SS/PBCH block, abbreviated SSB) within the same 5ms time window. This example describes a method of determining SSB transmission time domain locations according to the hierarchy of IAB nodes.

As shown in fig. 12, taking the case that the number of SSB transmission resources in one period is 8 (occupying 4 slots) at a subcarrier interval of 15kHz as an example, the corresponding relationship between the IAB node level and the SSB transmission resources is defined, as shown in table 2.

IAB node level N	Time slot for transmitting SSB
		N mod
4＝1	Slot 0
		N mod 4＝2	Slot 1
N mod 4＝3	Slot 2
		N mod 4＝0	Slot 3

TABLE 2

In the implicit indication manner, for example, the time domain position where the upper IAB node transmits the SSB is the second time slot, and therefore, according to the correspondence relationship in table 2, the IAB node1 determines that the hierarchy of the upper node thereof satisfies "N mod 4 ═ 2", and then the hierarchy of the IAB node1 should satisfy "N mod 4 ═ 3", so as to determine that the SSB should be transmitted in the third time slot.

The IAB node1 may also determine the time domain position of the SSB transmitted by itself according to the time domain position of the SSB transmitted by the upper IAB node without determining the level of the upper IAB node, for example, if the time domain position of the SSB transmitted by the upper IAB node is the second time slot, the time domain position of the SSB transmitted by the IAB node1 is the third time slot.

Example 6

In order to realize the staggering of transmission resources of synchronous signal blocks (SS/PBCH blocks, abbreviated as SSBs) between adjacent IAB nodes, the SSB transmission time domain position can also be determined jointly according to the cell ID and the IAB level.

For example, the 5ms time window for transmitting the SSB (i.e., which half frame within the 20ms SSB transmission period transmits the SSB) is determined from the cell ID; and further determines which SSB transmission resources within 5ms are occupied for transmitting SSBs according to the IAB level.

As another example, the 5ms time window for transmitting SSBs (i.e., which half frame within a 20ms SSB transmission period to transmit SSBs) is determined according to the IAB level; and further determining which SSB transmission resources within 5ms are occupied to send the SSB according to the cell ID.

Alternatively, the 5ms time window for transmitting SSBs (i.e., which half frame within a 20ms SSB transmission period transmits SSBs) is determined jointly by the cell ID and the IAB level.

Or, determining which SSB transmission resources occupying within 5ms to send the SSB transmission SSB jointly according to the cell ID and the IAB level.

It should be noted that the present invention can be embodied in other specific forms, and various changes and modifications can be made by those skilled in the art without departing from the spirit and scope of the invention.

Claims

1. A method of time domain location information determination, comprising:

determining the time domain position of a synchronization signal block sent by a node according to the node attribute information of the node and the corresponding relation;

the determining the time domain position of the synchronization signal block sent by the node according to the attribute information of the node and the corresponding relation comprises at least one of the following steps:

determining the time slot occupied by the node for actually sending the synchronous signal block in a half-frame time window according to the level of the node and the corresponding relation;

the determining the position of the half-frame time window of the synchronization signal block sent by the node according to the cell group identifier of the node and the corresponding relation comprises the following steps:

2. The method of claim 1, wherein:

the node attribute information includes at least one of:

a cell identity of the node;

identifying the node in the cell group;

a hierarchy of nodes.

3. The method of claim 1, wherein:

the synchronization signal block time domain position comprises at least one of:

4. The method of claim 1, wherein:

5. The method of claim 1, wherein:

6. The method of claim 1, wherein:

the determining the position of the half-frame time window of the synchronization signal block sent by the node according to the cell identifier of the node and the corresponding relation comprises:

7. The method of claim 1, wherein:

the determining the position of the half-frame time window of the synchronization signal block sent by the node according to the hierarchy of the node and the corresponding relation comprises:

8. The method of claim 1, wherein:

the determining the synchronization signal block resource occupied by the node for actually sending the synchronization signal block in the half-frame time window according to the cell group identifier of the node and the corresponding relation comprises the following steps:

9. The method of claim 1, wherein:

the determining, according to the cell identifier of the node and the correspondence, a synchronization signal block resource occupied by the node for actually sending a synchronization signal block within a half-frame time window includes:

10. The method of claim 1, wherein:

the determining, according to the hierarchy of the node and the correspondence, a synchronization signal block resource occupied by the node for actually sending a synchronization signal block within a half-frame time window includes:

11. The method of claim 1, wherein:

the determining the time slot occupied by the node for actually sending the synchronous signal block in the half-frame time window according to the cell group identification of the node and the corresponding relation comprises the following steps:

12. The method of claim 1, wherein:

the determining, according to the cell identifier of the node and the correspondence, a time slot occupied by the node for actually sending the synchronization signal block within the half-frame time window includes:

13. The method of claim 1, wherein:

the determining, according to the hierarchy of the node and the correspondence, a time slot occupied by the node for actually sending the synchronization signal block within the half-frame time window includes:

14. The method of any one of claims 1-13, wherein:

the correspondence between the node attribute information and the time domain position of the synchronization signal block is specified by a protocol or configured by an upper node of the node.

15. The method of any one of claims 1-13, wherein:

the node is a converged access and backhaul IAB node in a multi-hop network.

16. A time domain location information determination apparatus, comprising:

a time domain position determining module, configured to determine, according to node attribute information of a node and the correspondence, a time domain position of a synchronization signal block sent by the node;

17. The apparatus of claim 16, wherein:

the node attribute information includes at least one of:

a cell identity of the node;

identifying the node in the cell group;

a hierarchy of nodes;

18. The apparatus of claim 16 or 17, wherein:

the node is a converged access and backhaul IAB node in a multi-hop network.

19. A time domain location information determination apparatus, comprising:

a memory, a processor and a temporal location information determination program stored on the memory and executable on the processor, the temporal location information determination program when executed by the processor implementing the steps of the temporal location information determination method of any of the preceding claims 1-15.

20. A computer-readable storage medium having stored thereon a time-domain position information determination program which, when executed by a processor, implements the steps of the time-domain position information determination method of any one of claims 1-15 above.