CN113133052B - Path selection method and device and IAB base station - Google Patents
Path selection method and device and IAB base station Download PDFInfo
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- H04W28/02—Traffic management, e.g. flow control or congestion control
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- H—ELECTRICITY
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- H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
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Abstract
The present disclosure provides a path selection method, a device and an IAB base station, wherein the method includes: receiving path selection information, the path selection information including at least one of: a path identification of the selected path; the identifier of the last hop IAB base station of the selected path; information of N-hop IAB base stations in the selected path, wherein the N-hop IAB base stations at least comprise the first IAB base station, and N is an integer greater than 0; at least one embodiment of the disclosure can enable the IAB base station receiving the path selection information to complete path selection quickly and efficiently, and can simplify information processing of each IAB base station.
Description
Technical Field
The present disclosure relates to the field of communications technologies, and in particular, to a path selection method and apparatus, and an IAB base station.
Background
The Integrated Access and Backhaul (IAB) refers to that a base station integrates a wireless Access link and a wireless Backhaul link, so as to reduce the burden of deploying a wired transmission network. The access link is a communication link between the terminal and the IAB base station, and the wireless return link is a communication link between the IAB base stations. Under the IAB architecture, an IAB-donor base station (home IAB base station) and an IAB base station (which may be understood as a non-home IAB base station) may have a relay-like function. The IAB donor base station provides a wireless backhaul function for the IAB base station and provides an interface between the terminal and a core network. The IAB base station includes a base station function and a Mobile-Termination (MT) function. The MT function is defined as a part of the functions of the mobile terminal, and is integrated in the IAB base station, and is connected with the IAB donor other IAB base stations through the wireless backhaul link.
In the existing IAB topology structure, from an IAB donor base station to a terminal, information transmission between the IAB donor base station and the terminal is realized through relay of a plurality of IAB base stations, that is, through a multi-hop (multi-hop). The link between the terminal and the upper level IAB base station is a wireless access link, the link between the IAB base stations and the link between the IAB base station and the IAB donor base station are wireless return links. The terminal side looks like that the IAB base station is a normal cell, and the terminal can complete cell selection through cell search and cell access processes. After the terminal completes cell access, the accessed IAB base station can upwards inform the information to the IAB donor base station through multi-hop, and when the subsequent data transmission needs, the IAB donor base station can transmit the data to the IAB base station accessed by the terminal through route selection and then transmit the data to the terminal. For example, as shown in fig. 1, terminal 1 accesses IAB6, IAB6 will transit through a plurality of intermediate IAB base stations, and notify IAB donor base station that terminal 1 accesses IAB6, and the IAB donor base station knows that terminal 1 can be found through IAB 6. When there is a data transmission demand, the IAB donor base station will transmit the data to the IAB6 through routing, and the IAB6 transmits the data to the terminal.
As described above, the IAB network can implement information interaction between the IAB donor base station and the destination IAB base station through multi-hop (relay among multiple IAB base stations).
Disclosure of Invention
At least one embodiment of the present disclosure provides a path selection method, an apparatus, and an IAB base station, which solve the problem in the prior art that information interaction can be realized only through multiple hops between a home IAB base station and a target IAB base station, but determination of path selection is ambiguous.
According to an aspect of the present disclosure, at least one embodiment provides a path selection method applied to a first access and backhaul integrated IAB base station, including:
receiving path selection information, the path selection information including at least one of:
a path identification of the selected path;
the identifier of the last hop IAB base station of the selected path;
and information of N-hop IAB base stations in the selected path, wherein the N-hop IAB base stations at least comprise the first IAB base station, and N is an integer greater than 0.
Further, according to at least one embodiment of the present disclosure, the information of the N-hop IAB base station in the selected path includes:
the method comprises the steps that the identifier of an N-hop IAB base station in a selected path and the identifier of a next-hop IAB base station of each IAB base station in the N-hop IAB base station are obtained;
or,
and the identifier of the next hop IAB base station of each IAB base station in the N hop IAB base stations.
Furthermore, according to at least one embodiment of the present disclosure, the path selection information is encapsulated by a home IAB base station, or the path selection information is encapsulated by any one of the M-hop IAB base stations of the first IAB base station; m is an integer greater than 0.
Further, according to at least one embodiment of the present disclosure, the receiving path selection information includes:
receiving a first Backhaul Adaptation Protocol (BAP) packet, wherein the first BAP packet comprises N bit groups, and one bit group is used for indicating information of a one-hop target inter-access point (IAB) base station; each bit group comprises at least one bit;
wherein a bit group comprises a first type of bit and a second type of bit; the first type bit is used for indicating the identification of a target IAB base station, and the second type bit is used for indicating the identification of a next hop IAB base station of the target IAB base station.
Further, according to at least one embodiment of the present disclosure, the receiving the path selection information includes:
receiving a second BAP packet, wherein the second BAP packet comprises a first data area and a second data area; the N bit groups of the first data area are respectively used for indicating the identifiers of the corresponding IAB base stations, and the N bit groups of the second data area are respectively used for indicating the identifiers of the next-hop IAB base stations of the IAB base stations; each bit group includes at least one bit.
Further, according to at least one embodiment of the present disclosure, the receiving the path selection information includes:
receiving a third BAP packet, wherein the third BAP packet at least comprises N bit groups, and one bit group is used for indicating an identifier of a next hop IAB base station of one hop IAB base station, and the identifier of the next hop IAB base station of each IAB base station in the N IAB base stations occupies the N bit groups of the third BAP packet according to a path selection sequence; each bit group includes at least one bit.
Further, according to at least one embodiment of the present disclosure, the receiving path selection information includes:
receiving a fourth BAP packet carrying the path selection information;
the method further comprises at least one of:
deleting the information of the first IAB base station in the fourth BAP packet;
and sending the deleted fourth BAP packet to a next-hop IAB base station of the first IAB base station.
According to another aspect of the present disclosure, at least one embodiment provides a path selection method applied to a second access and backhaul integrated IAB base station, including:
sending path selection information to a first IAB base station, wherein the path selection information comprises at least one of the following items:
a path identification of the selected path;
the identifier of the last hop IAB base station of the selected path;
and information of N-hop IAB base stations in the selected path, wherein the N-hop IAB base stations at least comprise the next-hop IAB base station of the first IAB base station, and N is an integer greater than 0.
Further, according to at least one embodiment of the present disclosure, the information of the N-hop IAB base station in the selected path includes:
the identifier of the N-hop IAB base station in the selected path and the identifier of the next-hop IAB base station of each IAB base station in the N-hop IAB base station;
or,
and the identifier of the next hop IAB base station of each IAB base station in the N hop IAB base stations.
In addition, according to at least one embodiment of the present disclosure, the path selection information is encapsulated by a home IAB base station, or the path selection information is encapsulated by the second IAB base station or any one of P-hop IAB base stations of the second IAB base station; p is an integer greater than 0.
Further, in accordance with at least one embodiment of the present disclosure, the method further comprises:
sending feedback information to the home IAB base station under the condition that the path selection information is encapsulated by the second IAB base station and the second IAB base station modifies the path selection information; the feedback information comprises at least one of:
the modified identifier of the N-hop IAB base station of the selected path;
the reason is modified.
Further, according to at least one embodiment of the present disclosure, the sending the path selection information to the first IAB base station includes:
sending a first Backhaul Adaptation Protocol (BAP) packet to a first inter-access point (IAB) base station, wherein the first BAP packet comprises N bit groups, and one bit group is used for indicating information of a one-hop target IAB base station; each bit group comprises at least one bit;
wherein a bit group comprises a first type of bit and a second type of bit; the first type bit is used for indicating the identification of the target IAB base station, and the second type bit is used for indicating the identification of the next hop IAB base station of the target IAB base station.
Further, according to at least one embodiment of the present disclosure, the sending the path selection information to the first IAB base station includes:
sending a second BAP packet to the first IAB base station, wherein the second BAP packet comprises a first data area and a second data area; the N bit groups of the first data area are respectively used for indicating the identifier of the corresponding IAB base station, and the N bit groups of the second data area are respectively used for indicating the identifier of the next-hop IAB base station of the IAB base station; each bit group includes at least one bit.
Further, according to at least one embodiment of the present disclosure, the sending the path selection information to the first IAB base station includes:
sending a third BAP packet to the first IAB base station, wherein the third BAP packet at least comprises N bit groups, one bit group is used for indicating the identifier of a next hop IAB base station of one hop IAB base station, and the identifier of the next hop IAB base station of each IAB base station in the N IAB base stations occupies the N bit groups of the third BAP packet according to a path selection sequence; each bit group includes at least one bit.
According to another aspect of the present disclosure, at least one embodiment provides a path selection apparatus, applied to a first IAB base station, including:
a receiving module, configured to receive path selection information, where the path selection information includes at least one of:
a path identification of the selected path;
the identifier of the last hop IAB base station of the selected path;
and information of N-hop IAB base stations in the selected path, wherein the N-hop IAB base stations at least comprise the first IAB base station, and N is an integer greater than 0.
According to another aspect of the present disclosure, at least one embodiment provides an access and backhaul integrated IAB base station, the IAB base station being a first IAB base station, comprising a processor and a transceiver, the transceiver receiving and transmitting data under control of the processor, the processor being configured to:
receiving path selection information, the path selection information including at least one of:
a path identification of the selected path;
the identifier of the last hop IAB base station of the selected path;
and information of N-hop IAB base stations in the selected path, wherein the N-hop IAB base stations at least comprise the first IAB base station, and N is an integer greater than 0.
According to another aspect of the present disclosure, at least one embodiment provides a path selection apparatus applied to a second IAB base station, including:
a sending module, configured to send path selection information to a first IAB base station, where the path selection information includes at least one of:
a path identification of the selected path;
the identifier of the last hop IAB base station of the selected path;
and information of N-hop IAB base stations in the selected path, wherein the N-hop IAB base stations at least comprise the next-hop IAB base station of the first IAB base station, and N is an integer greater than 0.
According to another aspect of the present disclosure, at least one embodiment provides an access and backhaul integrated IAB base station, the IAB base station being a second IAB base station, comprising a processor and a transceiver, the transceiver receiving and transmitting data under control of the processor, the processor being configured to:
sending path selection information to a first IAB base station, wherein the path selection information comprises at least one of the following items:
a path identification of the selected path;
the identifier of the last hop IAB base station of the selected path;
and information of N-hop IAB base stations in the selected path, wherein the N-hop IAB base stations at least comprise the next-hop IAB base station of the first IAB base station, and N is an integer greater than 0.
In accordance with another aspect of the disclosure, at least one embodiment provides an IAB base station comprising a memory, a processor, and a program stored on the memory and executable on the processor; wherein the processor implements the path selection method as described above when executing the program.
According to another aspect of the present disclosure, at least one embodiment provides a computer-readable storage medium on which a computer program is stored, which program, when executed by a processor, implements the steps in the path selection method as described above.
The technical scheme of the present disclosure at least has the following beneficial effects:
in the path selection method, the path selection device and the IAB base station of at least one embodiment of the present disclosure, the path selection information includes at least one of the path identifier of the selected path, the identifier of the last hop IAB base station of the selected path, and the information of the N hop IAB base station in the selected path, so that the IAB base station that receives the path selection information can complete path selection quickly and efficiently, and at the same time, information processing of each IAB base station can be simplified.
Drawings
FIG. 1 shows an example of a prior art IAB topology;
fig. 2 illustrates one of the steps of a path selection method provided by at least one embodiment of the present disclosure;
fig. 3 is a schematic diagram illustrating a first BAP packet in a path selection method according to at least one embodiment of the disclosure;
fig. 4 is a schematic diagram illustrating a second BAP packet in a path selection method according to at least one embodiment of the disclosure;
fig. 5 is a schematic diagram illustrating a third BAP packet in a path selection method according to at least one embodiment of the disclosure;
fig. 6 is a schematic diagram illustrating a transfer principle of a BAP packet in a path selection method according to at least one embodiment of the present disclosure;
fig. 7 is a second schematic diagram illustrating steps of a path selection method according to at least one embodiment of the disclosure;
fig. 8 is a schematic structural diagram of a path selection device according to at least one embodiment of the present disclosure;
fig. 9 is a schematic structural diagram of an IAB base station according to at least one embodiment of the present disclosure;
fig. 10 illustrates a second schematic structural diagram of a path selection device according to at least one embodiment of the present disclosure.
Detailed Description
To make the technical problems, technical solutions and advantages to be solved by the present disclosure clearer, the following detailed description is made with reference to the accompanying drawings and specific embodiments.
In the related art, the IAB network can realize information interaction between the IABdonor base station and the target IAB base station through multi-hop (relay among a plurality of IAB base stations). However, multiple paths are generally included between the IAB donor base station and the destination base station, and how each IAB base station performs path selection is an unsolved problem at present.
As shown in fig. 2, at least one embodiment of the present disclosure provides a path selection method, applied to a first access and backhaul integrated IAB base station, where the first IAB base station is any one IAB base station in a selected path, including:
a path identification (path ID) of the selected path;
an identifier of the last hop IAB base station of the selected path, for example, an Address of the last hop IAB base station, i.e., destination Address;
and information of N-hop IAB base stations in the selected path, wherein the N-hop IAB base stations at least comprise the first IAB base station, and N is an integer greater than 0.
It should be noted that, the path selection method provided by at least one embodiment of the present disclosure is applicable to both the uplink direction and the downlink direction, and is not limited herein. Wherein, the uplink direction and the downlink direction are relative to the home IAB base station.
Further, according to at least one embodiment of the present disclosure, the information of the N-hop IAB base station in the selected path includes:
the method comprises the steps that the identifier of an N-hop IAB base station in a selected path and the identifier of a next-hop IAB base station of each IAB base station in the N-hop IAB base station are obtained; for example, the information of the N-hop IAB base station includes: the identifier of the first-hop IAB base station, the identifier of the second-hop IAB base station, the identifier of the third-hop IAB base station, the identifier of the next-hop IAB base station of the first-hop IAB base station, the identifier of the next-hop IAB base station of the second-hop IAB base station and the identifier of the next-hop IAB base station of the third-hop IAB base station.
Or, the information of the N-hop IAB base station in the selected path includes:
an identifier of a next-hop IAB base station of each IAB base station in the N-hop IAB base stations; for example, the information of the N-hop IAB base station includes: the identifier of the next hop IAB base station of the first hop IAB base station, the identifier of the next hop IAB base station of the second hop IAB base station and the identifier of the next hop IAB base station of the third hop IAB base station.
Furthermore, according to at least one embodiment of the present disclosure, the path selection information is encapsulated by a home IAB base station, or the path selection information is encapsulated by any one of M-hop IAB base stations of the first IAB base station; m is an integer greater than 0.
For example, the IAB base station modifies the identity of the next at least one-hop IAB base station, and in this case, the path selection information is encapsulated by the IAB base station.
In addition, according to at least one embodiment of the present disclosure, the encapsulation of the path selection information may be accomplished through a Backhaul Adaptation Protocol (BAP). The path selection information may be carried in a routing table.
Further, according to at least one embodiment of the present disclosure, the receiving the path selection information includes:
receiving a first Backhaul Adaptation Protocol (BAP) packet, wherein the first BAP packet comprises N bit groups, and one bit group is used for indicating information of a one-hop target inter-access point (IAB) base station; each bit group comprises at least one bit;
wherein a bit group comprises a first type of bit and a second type of bit; the first type bit is used for indicating the identification of the target IAB base station, and the second type bit is used for indicating the identification of the next hop IAB base station of the target IAB base station.
For example, as shown in fig. 3, the path selection information includes information of N-hop IAB base stations. Xi bits (first type bit, containing at least one bit) and Yi bits (second type bit, containing at least one bit) form a bit group for indicating the information of IAB base station of the ith hop, i belongs to (1, 2,3, 4) \8230;). If the X1bits identifies the IAB base station A, the Y1bits in the path selection information identifies the IAB base station B; then the IAB base station a may know that its next hop IAB base station is the IAB base station B according to the path selection information. IAB base station a passes the BAP packet to IAB base station B. After the IAB base station determines the identifier of the IAB base station through the identifier of the X2bits in the path selection information, the identifier of the next hop IAB base station of the IAB base station B can be obtained through the corresponding Y2 bits. By analogy, this is not to be enumerated here.
Further, according to at least one embodiment of the present disclosure, the receiving the path selection information includes:
receiving a second BAP packet, wherein the second BAP packet comprises a first data area and a second data area; the N bit groups of the first data area are respectively used for indicating the identifiers of the corresponding IAB base stations, and the N bit groups of the second data area are respectively used for indicating the identifiers of the next-hop IAB base stations of the IAB base stations; each bit group includes at least one bit.
For example, as shown in fig. 4, the path selection information includes information of an N-hop IAB base station. A plurality of Xi bits are packaged in a first data area of the BAP package, a plurality of Yi bits are packaged in a second data area of the BAP package, the Xi bits and the Yi bits are used for indicating information of an IAB base station of the ith hop, and i belongs to (1, 2,3, 4) \8230;). After detecting the identifier of the IAB base station in the first data area, the IAB base station acquires the identifier of the next hop IAB base station in the second data area (i.e., yi bit) of the second BAP packet.
It should be noted that the path selection information in the first BAP packet or the second BAP packet may be encapsulated according to a routing order or a path selection order; or, the IAB base station is notified of the order in the path selection information in a pre-configured or network configured manner. For example, the IAB base station needs to know in advance which Xi bits corresponds to the current IAB base station.
Further, according to at least one embodiment of the present disclosure, the receiving the path selection information includes:
receiving a third BAP packet, wherein the third BAP packet at least comprises N bit groups, and one bit group is used for indicating an identifier of a next hop IAB base station of one hop IAB base station, and the identifier of the next hop IAB base station of each IAB base station in the N IAB base stations occupies the N bit groups of the third BAP packet according to a path selection sequence; each bit group includes at least one bit.
For example, as shown in fig. 5, the path selection information includes information of N-hop IAB base stations. The Yi bits are used for indicating information of the IAB base station, and each Yi bit is used for indicating the identifier of the next hop IAB base station of the current IAB base station as a plurality of Yi bits are packaged according to the path selection sequence; therefore, the identifier of the current IAB base station does not need to be indicated through the Xi bits.
Further, according to at least one embodiment of the present disclosure, the receiving path selection information includes:
receiving a fourth BAP packet carrying the path selection information; it should be noted that, the fourth BAP packet may be any one of the first BAP packet, the second BAP packet, and the third BAP packet, and a description thereof is not repeated here;
the method further comprises at least one of:
deleting the information of the first IAB base station in the fourth BAP packet;
and sending the fourth BAP packet after deletion to a next hop IAB base station of the first IAB base station.
The IAB base station receives the path selection information, and may delete its own/used IAB base station information in the path selection information. If the path selection information encapsulates information of the multi-hop IAB base stations according to the routing order or the path selection order, and each IAB base station receiving the path selection information deletes information of its own IAB base station when sending to the next-hop IAB base station, each IAB base station receiving the path selection information can determine that the information of the first IAB base station in the current path selection information is the IAB base station to be used by its next hop.
As shown in fig. 6, the path selection information includes information of N-hop IAB base stations. The Yi bit indicates the identity of the next-hop IAB base station of the IAB base station a, the Y (i + 1) bit indicates the identity of the next-hop IAB base station of the IAB base station B, and the Y (i + 2) bit indicates the identity of the next-hop IAB base station of the IAB base station C. Because a plurality of Yi bits are packaged according to the routing sequence, when the current IAB base station sends the path selection information to the next-hop IAB base station, the identifier of the next-hop IAB base station is deleted, therefore, each IAB base station receives the path selection information, and the first group of Y bits of each IAB base station is the identifier of the next-hop IAB base station of the current IAB base station.
In summary, at least one embodiment of the present disclosure provides a path selection method, where the path selection information includes an identifier of a multi-hop IAB base station and an identifier of a next-hop IAB base station of a current IAB base station, or only includes an expression of the next-hop IAB base station of the current IAB base station; in at least one embodiment of the present disclosure, a sequence notification scheme is introduced, and after acquiring the identifier of the next hop IAB base station of each IAB base station, the identifier of the next hop IAB base station of each IAB base station may be deleted in the path selection information; at least one embodiment of the disclosure can complete path selection quickly and efficiently, and can simplify information processing of each IAB base station.
As shown in fig. 7, an embodiment of the present invention further provides a path selection method, which is applied to a second access and backhaul integrated IAB base station, where the second IAB base station is an last-hop IAB base station of a first IAB base station, and the first IAB base station and the second IAB base station are IAB base stations in a selected path, and the method includes:
a path identification (path ID) of the selected path;
an identifier of the last hop IAB base station of the selected path, for example, an Address of the last hop IAB base station, i.e., destination Address;
and information of N-hop IAB base stations in the selected path, wherein the N-hop IAB base stations at least comprise the next-hop IAB base station of the first IAB base station, and N is an integer greater than 0.
It should be noted that, the path selection method provided by at least one embodiment of the present disclosure is applicable to both the uplink direction and the downlink direction, and is not limited herein. The uplink direction and the downlink direction are relative to the home IAB base station.
Further, according to at least one embodiment of the present disclosure, the information of the N-hop IAB base station in the selected path includes:
the identifier of the N-hop IAB base station in the selected path and the identifier of the next-hop IAB base station of each IAB base station in the N-hop IAB base station; for example, the information of the N-hop IAB base station includes: the identifier of the first-hop IAB base station, the identifier of the second-hop IAB base station, the identifier of the third-hop IAB base station, the identifier of the next-hop IAB base station of the first-hop IAB base station, the identifier of the next-hop IAB base station of the second-hop IAB base station and the identifier of the next-hop IAB base station of the third-hop IAB base station.
Or, the information of the N-hop IAB base station in the selected path includes:
an identifier of a next-hop IAB base station of each IAB base station in the N-hop IAB base stations; for example, the information of the N-hop IAB base station includes: the identifier of the next hop IAB base station of the first hop IAB base station, the identifier of the next hop IAB base station of the second hop IAB base station and the identifier of the next hop IAB base station of the third hop IAB base station.
Furthermore, according to at least one embodiment of the present disclosure, the path selection information is encapsulated by a home IAB base station, or the path selection information is encapsulated by the second IAB base station or any one of the second IAB base stations of the last P-hop IAB base stations; p is an integer greater than 0.
For example, the IAB base station modifies the identity of the next at least one-hop IAB base station, and in this case, the path selection information is encapsulated by the IAB base station.
Further, in accordance with at least one embodiment of the present disclosure, the method further comprises:
sending feedback information to a home IAB base station under the condition that the path selection information is encapsulated by the second IAB base station and the second IAB base station modifies the path selection information; the feedback information comprises at least one of:
the modified identifier of the N-hop IAB base station of the selected path;
and modifying reasons such as path blocking, capacity balancing, link failure and the like.
In addition, according to at least one embodiment of the present disclosure, the encapsulation of the path selection information may be completed by a Backhaul Adaptation Protocol (BAP). The path selection information may be carried in a routing table.
Further, according to at least one embodiment of the present disclosure, the sending the path selection information to the first IAB base station includes:
sending a first Backhaul Adaptation Protocol (BAP) packet to a first inter-access node (IAB) base station, wherein the first BAP packet comprises N bit groups, and one bit group is used for indicating information of a one-hop target IAB base station; each bit group comprises at least one bit;
wherein a bit group comprises a first type of bit and a second type of bit; the first type bit is used for indicating the identification of a target IAB base station, and the second type bit is used for indicating the identification of a next hop IAB base station of the target IAB base station.
For example, as shown in fig. 3, the path selection information includes information of N-hop IAB base stations. Xi bits (first type of bits, containing at least one bit) and Yi bits (second type of bits, containing at least one bit) constitute a bit group for indicating information of IAB base station of ith hop, i e (1, 2,3,4 \8230;). If the X1bits identifies the IAB base station A, the Y1bits in the path selection information identifies the IAB base station B; then the IAB base station a may know that its next hop IAB base station is the IAB base station B according to the path selection information. IAB base station a passes the BAP packet to IAB base station B. After the IAB base station determines the identifier of the IAB base station through the identifier of the X2bits in the path selection information, the identifier of the next hop IAB base station of the IAB base station B can be obtained through the corresponding Y2 bits. And so on, it is not enumerated here.
Further, according to at least one embodiment of the present disclosure, the sending the path selection information to the first IAB base station includes:
sending a second BAP packet to the first IAB base station, wherein the second BAP packet comprises a first data area and a second data area; the N bit groups of the first data area are respectively used for indicating the identifier of the corresponding IAB base station, and the N bit groups of the second data area are respectively used for indicating the identifier of the next-hop IAB base station of the IAB base station; each bit group includes at least one bit.
For example, as shown in fig. 4, the path selection information includes information of an N-hop IAB base station. A plurality of Xi bits are packaged in a first data area of the BAP packet, a plurality of Yi bits are packaged in a second data area of the BAP packet, the Xi bits and the Yi bits are used for indicating information of an IAB base station of the ith hop, and i belongs to (1, 2,3, 4) \ 8230; \ 8230;). After detecting the identifier of the IAB base station in the first data area, the IAB base station acquires the identifier of the next hop IAB base station in the second data area (i.e., yi bit) of the second BAP packet.
It should be noted that the path selection information in the first BAP packet or the second BAP packet may be encapsulated according to a routing sequence or a path selection sequence; or, the IAB base station is informed of the sequence in the path selection information in a pre-configuration or network configuration mode. For example, the IAB base station needs to know in advance which Xi bits corresponds to the current IAB base station.
Further, according to at least one embodiment of the present disclosure, the sending the path selection information to the first IAB base station includes:
sending a third BAP packet to the first IAB base station, wherein the third BAP packet at least comprises N bit groups, and one bit group is used for indicating the identifier of a next-hop IAB base station of one-hop IAB base stations, and the identifier of the next-hop IAB base station of each of the N IAB base stations occupies the N bit groups of the third BAP packet according to a path selection sequence; each bit group includes at least one bit.
For example, as shown in fig. 5, the path selection information includes information of N-hop IAB base stations. The Yi bits are used for indicating information of the IAB base station, and each Yi bit is used for indicating the identifier of the next hop IAB base station of the current IAB base station as a plurality of Yi bits are packaged according to the path selection sequence; therefore, the identifier of the current IAB base station does not need to be indicated through the Xi bits.
In summary, at least one embodiment of the present disclosure provides a path selection method, where the path selection information includes an identifier of a multi-hop IAB base station and an identifier of a next-hop IAB base station of a current IAB base station, or only includes an expression of the next-hop IAB base station of the current IAB base station. In at least one embodiment of the present disclosure, a sequence notification scheme is introduced, and after knowing the identifier of the next hop IAB base station, each IAB base station may delete the identifier of the next hop IAB base station in the path selection information; at least one embodiment of the disclosure can complete path selection quickly and efficiently, and can simplify information processing of each IAB base station.
As shown in fig. 8, an embodiment of the present invention further provides a path selection apparatus, which is applied to a first IAB base station, where the first IAB base station is any one IAB base station in a selected path, and the apparatus includes:
a receiving module 81, configured to receive path selection information, where the path selection information includes at least one of the following:
a path identification of the selected path;
the identifier of the last hop IAB base station of the selected path;
and information of N-hop IAB base stations in the selected path, wherein the N-hop IAB base stations at least comprise the first IAB base station, and N is an integer greater than 0.
Further, according to at least one embodiment of the present disclosure, the information of the N-hop IAB base station in the selected path includes:
the identifier of the N-hop IAB base station in the selected path and the identifier of the next-hop IAB base station of each IAB base station in the N-hop IAB base station;
or,
and the identifier of the next hop IAB base station of each IAB base station in the N hop IAB base stations.
Furthermore, according to at least one embodiment of the present disclosure, the path selection information is encapsulated by a home IAB base station, or the path selection information is encapsulated by any one of M-hop IAB base stations of the first IAB base station; m is an integer greater than 0.
Further, in accordance with at least one embodiment of the present disclosure, the receiving module includes:
the first receiving submodule is used for receiving a first Backhaul Adaptation Protocol (BAP) packet, the first BAP packet comprises N bit groups, and one bit group is used for indicating information of a one-hop target inter-access point (IAB) base station; each bit group comprises at least one bit;
wherein a bit group comprises a first type of bit and a second type of bit; the first type bit is used for indicating the identification of a target IAB base station, and the second type bit is used for indicating the identification of a next hop IAB base station of the target IAB base station.
Further, in accordance with at least one embodiment of the present disclosure, the receiving module includes:
the second receiving submodule is used for receiving a second BAP packet, and the second BAP packet comprises a first data area and a second data area; the N bit groups of the first data area are respectively used for indicating the identifier of the corresponding IAB base station, and the N bit groups of the second data area are respectively used for indicating the identifier of the next-hop IAB base station of the IAB base station; each bit group includes at least one bit.
Further, in accordance with at least one embodiment of the present disclosure, the receiving module includes:
a third receiving submodule, configured to receive a third BAP packet, where the third BAP packet includes at least N bit groups, and one bit group is used to indicate an identifier of a next-hop IAB base station of one-hop IAB base stations, and the identifier of the next-hop IAB base station of each of the N IAB base stations occupies the N bit groups of the third BAP packet according to a path selection sequence; each bit group includes at least one bit.
Further, in accordance with at least one embodiment of the present disclosure, the receiving module includes:
a fourth receiving submodule, configured to receive a fourth BAP packet carrying the path selection information;
the apparatus further comprises at least one of:
a deleting module, configured to delete the information of the first IAB base station in the fourth BAP packet;
and the processing module is used for sending the deleted fourth BAP packet to a next-hop IAB base station of the first IAB base station.
In summary, at least one embodiment of the present disclosure provides a path selection method, where the path selection information includes an identifier of a multi-hop IAB base station and an identifier of a next-hop IAB base station of a current IAB base station, or only includes an expression of the next-hop IAB base station of the current IAB base station. In at least one embodiment of the present disclosure, a sequence notification scheme is introduced, and after acquiring the identifier of the next hop IAB base station of each IAB base station, the identifier of the next hop IAB base station of each IAB base station may be deleted in the path selection information; at least one embodiment of the disclosure can complete path selection quickly and efficiently, and can simplify information processing of each IAB base station.
It should be noted that, the routing device provided in at least one embodiment of the present disclosure is a device capable of executing the routing method, and all embodiments of the routing method are applicable to the device and can achieve the same or similar beneficial effects.
As shown in fig. 9, at least one embodiment of the present disclosure further provides an access and backhaul integrated IAB base station, where the IAB base station is a first IAB base station, and includes a processor 900 and a transceiver 910, the transceiver 910 receives and transmits data under the control of the processor 900, and the processor 900 is configured to:
receiving path selection information, the path selection information including at least one of:
a path identification of the selected path;
the identifier of the last hop IAB base station of the selected path;
and information of N-hop IAB base stations in the selected path, wherein the N-hop IAB base stations at least comprise the first IAB base station, and N is an integer greater than 0.
Further, according to at least one embodiment of the present disclosure, the information of the N-hop IAB base station in the selected path includes:
the identifier of the N-hop IAB base station in the selected path and the identifier of the next-hop IAB base station of each IAB base station in the N-hop IAB base station;
or,
and the identifier of the next hop IAB base station of each IAB base station in the N hop IAB base stations.
Furthermore, according to at least one embodiment of the present disclosure, the path selection information is encapsulated by a home IAB base station, or the path selection information is encapsulated by any one of the M-hop IAB base stations of the first IAB base station; m is an integer greater than 0.
Further, in accordance with at least one embodiment of the present disclosure, the processor is further configured to:
receiving a first Backhaul Adaptation Protocol (BAP) packet, wherein the first BAP packet comprises N bit groups, and one bit group is used for indicating information of a one-hop target inter access node (IAB) base station; each bit group comprises at least one bit;
wherein a bit group comprises a first type of bit and a second type of bit; the first type bit is used for indicating the identification of the target IAB base station, and the second type bit is used for indicating the identification of the next hop IAB base station of the target IAB base station.
Further, in accordance with at least one embodiment of the present disclosure, the processor is further configured to:
receiving a second BAP packet, wherein the second BAP packet comprises a first data area and a second data area; the N bit groups of the first data area are respectively used for indicating the identifiers of the corresponding IAB base stations, and the N bit groups of the second data area are respectively used for indicating the identifiers of the next-hop IAB base stations of the IAB base stations; each bit group includes at least one bit.
Further, in accordance with at least one embodiment of the present disclosure, the processor is further configured to:
receiving a third BAP packet, wherein the third BAP packet at least comprises N bit groups, and one bit group is used for indicating an identifier of a next hop IAB base station of one hop IAB base station, and the identifier of the next hop IAB base station of each IAB base station in the N IAB base stations occupies the N bit groups of the third BAP packet according to a path selection sequence; each bit group includes at least one bit.
Further, in accordance with at least one embodiment of the present disclosure, the processor is further configured to:
receiving a fourth BAP packet carrying the path selection information;
deleting the information of the first IAB base station in the fourth BAP packet;
and sending the deleted fourth BAP packet to a next-hop IAB base station of the first IAB base station.
In summary, at least one embodiment of the present disclosure provides a path selection method, where the path selection information includes an identifier of a multi-hop IAB base station and an identifier of a next-hop IAB base station of a current IAB base station, or only includes an expression of the next-hop IAB base station of the current IAB base station. At least one embodiment of the present disclosure introduces a sequence notification scheme, and after knowing the identifier of the next hop IAB base station of each IAB base station, the identifier of the next hop IAB base station of each IAB base station can be deleted in the path selection information; at least one embodiment of the disclosure can complete path selection quickly and efficiently, and can simplify information processing of each IAB base station.
It should be noted that, the IAB base station provided in at least one embodiment of the present disclosure is an IAB base station capable of executing the path selection method, and all embodiments of the path selection method are applicable to the IAB base station and can achieve the same or similar beneficial effects.
As shown in fig. 10, at least one embodiment of the present disclosure further provides a path selection apparatus applied to a second IAB base station, where the second IAB base station is a last-hop IAB base station of a first IAB base station, and the first IAB base station and the second IAB base station are IAB base stations in a selected path, including:
a sending module 100, configured to send path selection information to a first IAB base station, where the path selection information includes at least one of the following:
a path identification of the selected path;
the identifier of the last hop IAB base station of the selected path;
and information of N-hop IAB base stations in the selected path, wherein the N-hop IAB base stations at least comprise the next-hop IAB base station of the first IAB base station, and N is an integer greater than 0.
Further, according to at least one embodiment of the present disclosure, the information of the N-hop IAB base station in the selected path includes:
the identifier of the N-hop IAB base station in the selected path and the identifier of the next-hop IAB base station of each IAB base station in the N-hop IAB base station;
or,
and the identifier of the next hop IAB base station of each IAB base station in the N hop IAB base stations.
In addition, according to at least one embodiment of the present disclosure, the path selection information is encapsulated by a home IAB base station, or the path selection information is encapsulated by the second IAB base station or any one of P-hop IAB base stations of the second IAB base station; p is an integer greater than 0.
Further, in accordance with at least one embodiment of the present disclosure, the apparatus further comprises:
a feedback module, configured to send feedback information to a home IAB base station when the path selection information is encapsulated by the second IAB base station and the second IAB base station modifies the path selection information; the feedback information comprises at least one of:
the modified identifier of the N-hop IAB base station of the selected path;
the reason for the modification.
Further, in accordance with at least one embodiment of the present disclosure, the transmitting module includes:
a first sending submodule, configured to send a first Backhaul Adaptation Protocol (BAP) packet to a first inter-access point (IAB) base station, where the first BAP packet includes N bit groups, and one bit group is used to indicate information of a one-hop target IAB base station; each bit group comprises at least one bit;
wherein a bit group comprises a first type of bit and a second type of bit; the first type bit is used for indicating the identification of a target IAB base station, and the second type bit is used for indicating the identification of a next hop IAB base station of the target IAB base station.
Further, in accordance with at least one embodiment of the present disclosure, the transmitting module includes:
the second sending submodule is used for sending a second BAP packet to the first IAB base station, wherein the second BAP packet comprises a first data area and a second data area; the N bit groups of the first data area are respectively used for indicating the identifiers of the corresponding IAB base stations, and the N bit groups of the second data area are respectively used for indicating the identifiers of the next-hop IAB base stations of the IAB base stations; each bit group includes at least one bit.
Further, according to at least one embodiment of the present disclosure, the transmitting module includes:
a third sending submodule, configured to send a third BAP packet to the first IAB base station, where the third BAP packet includes at least N bit groups, and one bit group is used to indicate an identifier of a next-hop IAB base station of the one-hop IAB base station, and the identifier of the next-hop IAB base station of each of the N IAB base stations occupies the N bit groups of the third BAP packet according to the path selection order; each bit group includes at least one bit.
In summary, at least one embodiment of the present disclosure provides a path selection method, where the path selection information includes an identifier of a multi-hop IAB base station and an identifier of a next-hop IAB base station of a current IAB base station, or only includes an expression of the next-hop IAB base station of the current IAB base station. At least one embodiment of the present disclosure introduces a sequence notification scheme, and after knowing the identifier of the next hop IAB base station of each IAB base station, the identifier of the next hop IAB base station of each IAB base station can be deleted in the path selection information; at least one embodiment of the disclosure can complete path selection quickly and efficiently, and can simplify information processing of each IAB base station.
It should be noted that, the path selection device provided in at least one embodiment of the present disclosure is a device capable of executing the path selection method, and all embodiments of the path selection method are applicable to the device and can achieve the same or similar beneficial effects.
As shown in fig. 9, at least one embodiment of the present disclosure provides an access and backhaul integrated IAB base station, where the IAB base station is a second IAB base station, and includes a processor 900 and a transceiver 910, where the transceiver 910 receives and transmits data under the control of the processor 900, and the processor 900 is configured to:
sending path selection information to a first IAB base station, wherein the path selection information comprises at least one of the following items:
a path identification of the selected path;
the identifier of the last hop IAB base station of the selected path;
and information of N-hop IAB base stations in the selected path, wherein the N-hop IAB base stations at least comprise the next-hop IAB base station of the first IAB base station, and N is an integer greater than 0.
Further, according to at least one embodiment of the present disclosure, the information of the N-hop IAB base station in the selected path includes:
the identifier of the N-hop IAB base station in the selected path and the identifier of the next-hop IAB base station of each IAB base station in the N-hop IAB base station;
or,
and the identifier of the next hop IAB base station of each IAB base station in the N hop IAB base stations.
In addition, according to at least one embodiment of the present disclosure, the path selection information is encapsulated by a home IAB base station, or the path selection information is encapsulated by the second IAB base station or any one of P-hop IAB base stations of the second IAB base station; p is an integer greater than 0.
Further, in accordance with at least one embodiment of the present disclosure, the processor is further configured to:
sending feedback information to a home IAB base station under the condition that the path selection information is encapsulated by the second IAB base station and the second IAB base station modifies the path selection information; the feedback information comprises at least one of:
the modified identifier of the N-hop IAB base station of the selected path;
the reason for the modification.
Further, in accordance with at least one embodiment of the present disclosure, the processor is further configured to:
sending a first Backhaul Adaptation Protocol (BAP) packet to a first inter-access node (IAB) base station, wherein the first BAP packet comprises N bit groups, and one bit group is used for indicating information of a one-hop target IAB base station; each bit group comprises at least one bit;
wherein a bit group comprises a first type of bit and a second type of bit; the first type bit is used for indicating the identification of the target IAB base station, and the second type bit is used for indicating the identification of the next hop IAB base station of the target IAB base station.
Further, in accordance with at least one embodiment of the present disclosure, the processor is further configured to:
sending a second BAP packet to the first IAB base station, wherein the second BAP packet comprises a first data area and a second data area; the N bit groups of the first data area are respectively used for indicating the identifiers of the corresponding IAB base stations, and the N bit groups of the second data area are respectively used for indicating the identifiers of the next-hop IAB base stations of the IAB base stations; each bit group includes at least one bit.
Further, in accordance with at least one embodiment of the present disclosure, the processor is further configured to:
sending a third BAP packet to the first IAB base station, wherein the third BAP packet at least comprises N bit groups, one bit group is used for indicating the identifier of a next hop IAB base station of one hop IAB base station, and the identifier of the next hop IAB base station of each IAB base station in the N IAB base stations occupies the N bit groups of the third BAP packet according to a path selection sequence; each bit group includes at least one bit.
In summary, at least one embodiment of the present disclosure provides a path selection method, where the path selection information includes an identifier of a multi-hop IAB base station and an identifier of a next-hop IAB base station of a current IAB base station, or only includes an expression of the next-hop IAB base station of the current IAB base station. At least one embodiment of the present disclosure introduces a sequence notification scheme, and after knowing the identifier of the next hop IAB base station of each IAB base station, the identifier of the next hop IAB base station of each IAB base station can be deleted in the path selection information; at least one embodiment of the disclosure can complete path selection quickly and efficiently, and can simplify information processing of each IAB base station.
It should be noted that, the IAB base station provided in at least one embodiment of the present disclosure is an IAB base station capable of executing the path selection method, and all embodiments of the path selection method are applicable to the IAB base station and can achieve the same or similar beneficial effects.
At least one embodiment of the present disclosure further provides an IAB base station, including a memory, a processor, and a computer program stored in the memory and capable of running on the processor, where the processor implements each process in the above-described embodiment of the path selection method when executing the program, and can achieve the same technical effect, and details are not repeated here to avoid repetition.
At least one embodiment of the present disclosure further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the processes in the path selection method embodiments described above, and can achieve the same technical effects, and in order to avoid repetition, the computer program is not described herein again. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-readable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block or blocks.
These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While the foregoing is directed to the preferred embodiment of the present disclosure, it will be appreciated by those skilled in the art that various changes and modifications may be made therein without departing from the principles of the disclosure, and it is intended that such changes and modifications be covered by the appended claims.
Claims (14)
1. A path selection method is applied to a first access and backhaul integrated IAB base station, and is characterized by comprising the following steps:
receiving path selection information, the path selection information comprising:
a path identification of the selected path;
the identifier of the last hop IAB base station of the selected path;
information of N-hop IAB base stations in the selected path, wherein the N-hop IAB base stations at least comprise the first IAB base station, and N is an integer greater than 0;
the receiving path selection information includes:
receiving a first Backhaul Adaptation Protocol (BAP) packet, wherein the first BAP packet comprises N bit groups, and one bit group is used for indicating information of a one-hop target inter-access point (IAB) base station; each bit group comprises at least two bits;
wherein a bit group comprises a first type of bit and a second type of bit; the first type bit is used for indicating the identification of a target IAB base station, and the second type bit is used for indicating the identification of a next hop IAB base station of the target IAB base station;
or receiving a second BAP packet, wherein the second BAP packet comprises a first data area and a second data area; the N bit groups of the first data area are respectively used for indicating the identifiers of the corresponding IAB base stations, and the N bit groups of the second data area are respectively used for indicating the identifiers of the next-hop IAB base stations of the IAB base stations; each bit group includes at least one bit.
2. The method of claim 1, wherein the information of the N-hop IAB base stations in the selected path comprises:
the identifier of the N-hop IAB base station in the selected path and the identifier of the next-hop IAB base station of each IAB base station in the N-hop IAB base station;
or,
and the identifier of the next hop IAB base station of each IAB base station in the N hop IAB base stations.
3. The method of claim 1, wherein the path selection information is encapsulated by a home IAB base station, or wherein the path selection information is encapsulated by any one of M-hop IAB base stations of the first IAB base station; m is an integer greater than 0.
4. The method of claim 1, wherein receiving path selection information comprises:
receiving a fourth BAP packet carrying the path selection information;
the method further comprises at least one of:
deleting the information of the first IAB base station in the fourth BAP packet;
and sending the fourth BAP packet after deletion to a next hop IAB base station of the first IAB base station.
5. A path selection method is applied to a second access and backhaul integrated IAB base station, and is characterized by comprising the following steps:
sending path selection information to a first IAB base station, wherein the path selection information comprises:
a path identification of the selected path;
the identifier of the last hop IAB base station of the selected path;
information of N-hop IAB base stations in the selected path, wherein the N-hop IAB base stations at least comprise the next-hop IAB base station of the first IAB base station, and N is an integer greater than 0;
the sending the path selection information to the first IAB base station includes:
sending a first Backhaul Adaptation Protocol (BAP) packet to a first inter-access point (IAB) base station, wherein the first BAP packet comprises N bit groups, and one bit group is used for indicating information of a one-hop target IAB base station; each bit group comprises at least two bits;
wherein a bit group comprises a first type of bit and a second type of bit; the first type bit is used for indicating the identification of a target IAB base station, and the second type bit is used for indicating the identification of a next hop IAB base station of the target IAB base station;
or sending a second BAP packet to the first IAB base station, wherein the second BAP packet comprises a first data area and a second data area; the N bit groups of the first data area are respectively used for indicating the identifiers of the corresponding IAB base stations, and the N bit groups of the second data area are respectively used for indicating the identifiers of the next-hop IAB base stations of the IAB base stations; each bit group includes at least one bit.
6. The method of claim 5, wherein the information of the N-hop IAB base stations in the selected path comprises:
the identifier of the N-hop IAB base station in the selected path and the identifier of the next-hop IAB base station of each IAB base station in the N-hop IAB base station;
or,
and the identifier of the next hop IAB base station of each IAB base station in the N hop IAB base stations.
7. The method of claim 5, wherein the path selection information is encapsulated by a home IAB base station, or wherein the path selection information is encapsulated by the second IAB base station or any one of the second IAB base stations or a last P-hop IAB base station of the second IAB base station; p is an integer greater than 0.
8. The method of claim 7, further comprising:
sending feedback information to the home IAB base station under the condition that the path selection information is encapsulated by the second IAB base station and the second IAB base station modifies the path selection information; the feedback information comprises at least one of:
the modified identifier of the N-hop IAB base station of the selected path;
the reason for the modification.
9. A path selection apparatus applied to a first IAB base station, comprising:
a receiving module, configured to receive path selection information, where the path selection information includes:
a path identification of the selected path;
the identifier of the last hop IAB base station of the selected path;
information of N-hop IAB base stations in the selected path, wherein the N-hop IAB base stations at least comprise the first IAB base station, and N is an integer greater than 0;
the receiving module includes:
a first receiving submodule, configured to receive a first Backhaul Adaptation Protocol (BAP) packet, where the first BAP packet includes N bit groups, and one bit group is used to indicate information of a one-hop target inter-access node (IAB) base station; each bit group comprises at least two bits;
wherein a bit group comprises a first type of bit and a second type of bit; the first type bit is used for indicating the identification of a target IAB base station, and the second type bit is used for indicating the identification of a next hop IAB base station of the target IAB base station;
or, the second receiving submodule is configured to receive a second BAP packet, where the second BAP packet includes a first data area and a second data area; the N bit groups of the first data area are respectively used for indicating the identifier of the corresponding IAB base station, and the N bit groups of the second data area are respectively used for indicating the identifier of the next-hop IAB base station of the IAB base station; each bit group includes at least one bit.
10. An access and backhaul integrated IAB base station, the IAB base station being a first IAB base station and comprising a processor and a transceiver, the transceiver receiving and transmitting data under the control of the processor, wherein the processor is configured to:
receiving path selection information, the path selection information comprising:
a path identification of the selected path;
the identifier of the last hop IAB base station of the selected path;
information of N-hop IAB base stations in the selected path, wherein the N-hop IAB base stations at least comprise the first IAB base station, and N is an integer greater than 0;
the processor is further configured to:
receiving a first Backhaul Adaptation Protocol (BAP) packet, wherein the first BAP packet comprises N bit groups, and one bit group is used for indicating information of a one-hop target inter access node (IAB) base station; each bit group comprises at least two bits;
wherein a bit group comprises a first type of bit and a second type of bit; the first type bit is used for indicating the identification of a target IAB base station, and the second type bit is used for indicating the identification of a next hop IAB base station of the target IAB base station;
or receiving a second BAP packet, wherein the second BAP packet comprises a first data area and a second data area; the N bit groups of the first data area are respectively used for indicating the identifier of the corresponding IAB base station, and the N bit groups of the second data area are respectively used for indicating the identifier of the next-hop IAB base station of the IAB base station; each bit group includes at least one bit.
11. A path selection apparatus applied to a second IAB base station, comprising:
a sending module, configured to send path selection information to a first IAB base station, where the path selection information includes:
a path identification of the selected path;
the identifier of the last hop IAB base station of the selected path;
information of N-hop IAB base stations in the selected path, wherein the N-hop IAB base stations at least comprise the next-hop IAB base station of the first IAB base station, and N is an integer greater than 0;
the sending module comprises:
a first sending submodule, configured to send a first Backhaul Adaptation Protocol (BAP) packet to a first inter-access point (IAB) base station, where the first BAP packet includes N bit groups, and one bit group is used to indicate information of a one-hop target IAB base station; each bit group comprises at least two bits;
wherein a bit group comprises a first type of bit and a second type of bit; the first type bit is used for indicating the identification of a target IAB base station, and the second type bit is used for indicating the identification of a next hop IAB base station of the target IAB base station;
or, the second sending submodule is configured to send a second BAP packet to the first IAB base station, where the second BAP packet includes a first data area and a second data area; the N bit groups of the first data area are respectively used for indicating the identifier of the corresponding IAB base station, and the N bit groups of the second data area are respectively used for indicating the identifier of the next-hop IAB base station of the IAB base station; each bit group includes at least one bit.
12. An integrated access and backhaul IAB base station, the IAB base station being a second IAB base station and comprising a processor and a transceiver, the transceiver receiving and transmitting data under control of the processor, wherein the processor is configured to:
sending path selection information to a first IAB base station, wherein the path selection information comprises:
a path identification of the selected path;
the identifier of the last hop IAB base station of the selected path;
information of N-hop IAB base stations in the selected path, wherein the N-hop IAB base stations at least comprise the next-hop IAB base station of the first IAB base station, and N is an integer greater than 0;
the processor is further configured to:
sending a first Backhaul Adaptation Protocol (BAP) packet to a first inter-access node (IAB) base station, wherein the first BAP packet comprises N bit groups, and one bit group is used for indicating information of a one-hop target IAB base station; each bit group comprises at least two bits;
wherein a bit group comprises a first type of bit and a second type of bit; the first type bit is used for indicating the identification of a target IAB base station, and the second type bit is used for indicating the identification of a next hop IAB base station of the target IAB base station;
or sending a second BAP packet to the first IAB base station, wherein the second BAP packet comprises a first data area and a second data area; the N bit groups of the first data area are respectively used for indicating the identifiers of the corresponding IAB base stations, and the N bit groups of the second data area are respectively used for indicating the identifiers of the next-hop IAB base stations of the IAB base stations; each bit group includes at least one bit.
13. An IAB base station comprising a memory, a processor, and a program stored on the memory and executable on the processor; wherein the processor, when executing the program, implements a path selection method as claimed in any one of claims 1 to 4; alternatively, the processor, when executing the program, implements the path selection method according to any one of claims 5 to 8.
14. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the path selection method according to any one of claims 1 to 4; alternatively, the program when executed by a processor implements the steps in a path selection method according to any of claims 5-8.
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