CN110572837B

CN110572837B - Multi-hop relay configuration method, equipment and device

Info

Publication number: CN110572837B
Application number: CN201810576099.8A
Authority: CN
Inventors: 陈喆; 孙建成; 刘佳敏; 张大钧
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2018-06-06
Filing date: 2018-06-06
Publication date: 2021-06-08
Anticipated expiration: 2038-06-06
Also published as: WO2019233338A1; CN110572837A

Abstract

The invention discloses a multi-hop relay configuration method, equipment and a device, wherein the method comprises the following steps: when the first RN accesses the network through the second RN, the DgNB configures the second RN for the first RN and measures a third RN; after receiving a measurement report of a first RN, determining an active relay link path of the first RN according to channel quality between the first RN and a second RN and a third RN, as well as the load of the second RN and the load of the third RN, and taking other relay link paths as standby relay link paths; and informing the first RN of the configuration result of the relay link path. When the first RN accesses the network through the second RN, measuring according to the configuration of the DgNB; and the first RN receives the configuration result of the relay link path sent by the DgNB, activates the active relay link path according to the configuration, and takes other relay link paths as standby relay link paths. The invention provides a feasible technical scheme aiming at the multi-hop relay configuration process.

Description

Multi-hop relay configuration method, equipment and device

Technical Field

The present invention relates to the field of wireless communication technologies, and in particular, to a multi-hop relay configuration method, device, and apparatus.

Background

In the 5G system, a relay base station is introduced into 5G in order to extend network coverage. To further extend network coverage, multihop relay is also enabled. In the multihop Relay system, in order to select a low-latency path with high QoS (Quality of Service) to access to the Donor gNB (Donor base station; gNB: next generation base station), the Donor gNB needs to configure the path, and needs to reconfigure the RN (Relay node) when the path is interrupted.

However, the prior art is not sufficient in that there is no technical solution for the multi-hop relay configuration procedure.

Disclosure of Invention

The invention provides a multi-hop relay configuration method, equipment and a device, in particular to a multi-hop relay configuration method, a base station and a device, a measurement configuration method, RN and a device in multi-hop relay, and a multi-hop relay configuration method, RN and a device, which are used for solving the configuration problem in multi-hop relay.

The embodiment of the invention provides a multi-hop relay configuration method, which comprises the following steps:

when a first RN accesses the network through a second RN, a DgNB configures the second RN for the first RN and measures a third RN, wherein the second RN and the third RN are RNs capable of accessing the first RN into the network;

determining channel quality between the DgNB and the second RN, and channel quality between the DgNB and the third RN; after receiving a measurement report of the first RN, determining the channel quality between the first RN and the second RN and the channel quality between the first RN and the third RN according to the measurement report;

determining an active relay link path of the first RN according to the load of the second RN, the load of the third RN and the channel quality, and taking other relay link paths as standby relay link paths;

and informing the first RN of the configuration result of the relay link path.

In an implementation, the DgNB configures the first RN with measurements of the second RN and the third RN by RRC function.

In an implementation, when the path of the active relay link is interrupted, the method further includes:

instructing the first RN to activate a standby relay link path through the standby relay link path; and/or the presence of a gas in the gas,

and instructing the first RN to activate the standby relay link path according to the request of the first RN.

In an implementation, when there are at least two active relay link paths, the method further includes:

when the data transmitted on each active relay link path is the same, discarding the redundant data; and/or the presence of a gas in the gas,

and when the data transmitted on different activated relay link paths are different, combining and restoring the different data.

The embodiment of the invention provides a measurement configuration method in multi-hop relay, which comprises the following steps:

the second RN and/or the third RN search the peripheral first RN;

reporting the searched first RN to the DgNB, so that the DgNB configures a second RN and measures a third RN for the first RN when the first RN accesses the network through the second RN, wherein the second RN and the third RN are RNs capable of accessing the first RN to the network.

when a first RN accesses the network through a second RN, measuring according to the configuration of a DgNB, wherein the DgNB configures the first RN to measure the second RN and a third RN, and the second RN and the third RN are RNs which can access the first RN into the network;

the first RN sends a measurement report to the DgNB, wherein the measurement report comprises the channel quality between the first RN and the second RN and the channel quality between the first RN and the third RN;

and the first RN receives the configuration result of the relay link path sent by the DgNB, activates the active relay link path according to the configuration, and takes other relay link paths as standby relay link paths.

activating a backup relay link path; and/or the presence of a gas in the gas,

the active relay link path is deleted.

In an implementation, the active relay link path interruption is detected in a measurement performed in a configuration of the DgNB, and/or the active relay link path interruption is notified by the RN on the active relay link path.

In implementation, the first communication module is used for data transmission on the active relay link path, and the second communication module is used for data transmission when data transmission on the standby relay link path is needed.

In an implementation, after deleting the active relay link path, the method further includes:

and starting a cell selection process by using the first communication module, and using the selected relay link path as a standby relay link path.

transmitting the same data on each active relay link path; and/or the presence of a gas in the gas,

after the data is divided into different parts, the data is transmitted on different paths of the active relay link.

The embodiment of the invention provides a base station, which comprises:

a processor for reading the program in the memory, performing the following processes:

when a first RN accesses a network through a second RN, configuring the second RN for the first RN and measuring a third RN, wherein the second RN and the third RN are RNs capable of accessing the first RN to the network;

a transceiver for receiving and transmitting data under the control of the processor, performing the following processes:

and informing the first RN of the configuration result of the relay link path.

In an implementation, the first RN is configured with measurements of the second RN and the third RN by the RRC function.

The embodiment of the invention provides a RN, which comprises:

when the first RN is used as the second RN and/or the third RN, searching the peripheral first RN;

reporting the searched first RN to a DgNB (neighbor node B), so that the DgNB configures a second RN and measures a third RN for the first RN when the first RN accesses the network through the second RN, wherein the second RN and the third RN can access the first RN to the network;

a transceiver for receiving and transmitting data under the control of the processor.

The embodiment of the invention provides a RN, and when the RN is used as a first RN, the RN comprises the following steps:

sending a measurement report to the DgNB, wherein the measurement report comprises the channel quality between the first RN and the second RN and the channel quality between the first RN and the third RN;

receiving a relay link path configuration result sent by the DgNB, activating a relay link path according to the configuration, and taking other relay link paths as standby relay link paths;

activating a backup relay link path; and/or the presence of a gas in the gas,

the active relay link path is deleted.

The embodiment of the invention provides a multi-hop relay configuration device, which comprises:

a measurement configuration module, configured to configure a second RN and measure a third RN for the first RN when the first RN accesses the network through the second RN, where the second RN and the third RN are RNs capable of accessing the first RN to the network;

a relay link path determining module, configured to determine channel quality between the DgNB and the second RN, and channel quality between the DgNB and the third RN; after receiving a measurement report of the first RN, determining the channel quality between the first RN and the second RN and the channel quality between the first RN and the third RN according to the measurement report; determining an active relay link path of the first RN according to the load of the second RN, the load of the third RN and the channel quality, and taking other relay link paths as standby relay link paths;

and the notification module is used for notifying the relay link path configuration result to the first RN.

The embodiment of the invention provides a measurement configuration device in multi-hop relay, which comprises the following steps:

the searching module is used for searching the peripheral first RN when the first RN is used as the second RN and/or the third RN;

and a reporting module, configured to report the searched first RN to the DgNB, so that the DgNB configures a second RN for the first RN and measures a third RN when the first RN accesses the network through the second RN, where the second RN and the third RN are RNs capable of accessing the first RN to the network.

a measurement module, configured to measure, when serving as a first RN, according to the configuration of a DgNB when the first RN accesses the network through a second RN, where the DgNB configures the first RN to measure a second RN and a third RN, and the second RN and the third RN are RNs capable of accessing the first RN to the network;

a sending module, configured to send a measurement report to the DgNB, where the measurement report includes channel quality between the first RN and the second RN, and channel quality between the first RN and the third RN;

and the relay link path processing module is used for receiving the relay link path configuration result sent by the DgNB, activating the relay link path according to the configuration, and taking other relay link paths as standby relay link paths.

The invention has the following beneficial effects:

in the technical solution provided in the embodiment of the present invention, a feasible technical solution for a multi-hop relay configuration process is provided, in which a relay node searches for at least two links, an active link and a standby link in an initial network access process. In this way, the relay node can connect to and activate the standby link when the link is broken, and connect to the new node, updating the link configuration of the DgNB.

Drawings

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

fig. 1 is a schematic flowchart of an implementation of a multi-hop relay configuration method on a DgNB side according to an embodiment of the present invention;

fig. 2 is a schematic flow chart illustrating an implementation of a measurement configuration method in a multi-hop relay on an RN side accessing an RN according to an embodiment of the present invention;

fig. 3 is a schematic flowchart illustrating an implementation process of a multi-hop relay configuration method of an RN side according to an embodiment of the present invention;

FIG. 4 is a diagram illustrating a network architecture according to an embodiment of the present invention;

FIG. 5 is a flow chart illustrating a path configuration process according to an embodiment of the present invention;

fig. 6 is a schematic flow chart of implementation of the method 1 in the case of link failure according to the embodiment of the present invention;

FIG. 7 is a flowchart illustrating implementation of scheme 1 of mode 2 in case of link failure according to an embodiment of the present invention;

FIG. 8 is a flow chart illustrating implementation of scheme 2 of mode 2 in case of link failure according to an embodiment of the present invention;

fig. 9 is a schematic diagram of an L3 relay implementation flow of scheme 2 of mode 2 in case of link failure according to an embodiment of the present invention;

FIG. 10 is a diagram illustrating a base station structure according to an embodiment of the present invention;

fig. 11 is a schematic diagram of an RN structure for providing access in an embodiment of the present invention;

fig. 12 is a schematic structural diagram of an access RN in an embodiment of the present invention;

fig. 13 is a schematic structural diagram of a multi-hop relay configuration apparatus according to an embodiment of the present invention;

fig. 14 is a schematic structural diagram of a measurement configuration apparatus in a multi-hop relay according to an embodiment of the present invention;

fig. 15 is a schematic structural diagram of a multi-hop relay configuration apparatus according to an embodiment of the present invention.

Detailed Description

In the process of accessing the relay node to the network, two modes are included: one is that the terminal selects the path by itself; one is the DgNB path selection. The solution provided by the embodiment of the present invention is directed to the latter, and more particularly, to a solution in which an IAB selects an access path and reports to a DgNB for management. The following describes embodiments of the present invention with reference to the drawings.

In the description process, the implementation of the RN side and the base station side of the access will be described separately, and then an example of the cooperative implementation of the two will be given to better understand the implementation of the scheme given in the embodiment of the present invention. Such an explanation does not mean that the two must be implemented together or separately, and actually, when the RN side of the access and the base station are implemented separately, the problems of the RN side and the base station side of the access are solved separately, and when the two are used in combination, a better technical effect is obtained.

In a 5G system, a relay node accesses path selection of a DgNB (Donor gNB, anchor base station), and a Donor gNB reconfiguration procedure when the path is interrupted. The relay node is called an Integrated Access Backhaul (IAB) node, and this name is also used in the embodiments of the present invention.

Fig. 1 is a schematic flowchart of an implementation of a multi-hop relay configuration method on a DgNB side, as shown in the figure, the implementation may include:

step 101, when a first RN accesses a network through a second RN, a DgNB configures the second RN for the first RN and measures a third RN, wherein the second RN and the third RN are RNs capable of accessing the first RN to the network;

step 102, determining the channel quality between the DgNB and the second RN, and the channel quality between the DgNB and the third RN; after receiving a measurement report of the first RN, determining the channel quality between the first RN and the second RN and the channel quality between the first RN and the third RN according to the measurement report;

step 103, determining an active relay link path of the first RN according to the load of the second RN, the load of the third RN and the channel quality, and taking other relay link paths as standby relay link paths;

and step 104, notifying the first RN of the relay link path configuration result.

Fig. 2 is a schematic diagram of an implementation flow of a measurement configuration method in a multi-hop relay on an RN side accessing an RN, where as shown in the figure, the method may include:

step 201, the second RN and/or the third RN search peripheral first RNs;

step 202, reporting the searched first RN to the DgNB, so that the DgNB configures a second RN and measures a third RN for the first RN when the first RN accesses the network through the second RN, wherein the second RN and the third RN are RNs capable of accessing the first RN to the network.

Fig. 3 is a schematic flowchart of an implementation of a multi-hop relay configuration method on an access RN side, as shown in the figure, the implementation may include:

step 301, when the first RN accesses the network through the second RN, performing measurement according to the configuration of the DgNB, where the DgNB configures the first RN to perform measurement on the second RN and measure a third RN, and the second RN and the third RN are RNs capable of accessing the first RN to the network;

step 302, the first RN sends a measurement report to the DgNB, where the measurement report includes channel quality between the first RN and the second RN, and channel quality between the first RN and the third RN;

step 303, the first RN receives the configuration result of the relay link path sent by the DgNB, activates the active relay link path according to the configuration, and uses the other relay link paths as the standby relay link paths.

Fig. 4 is a schematic diagram of a network structure, which is one of network architectures that can implement the solution provided in the embodiment of the present invention, and the implementation of the solution provided in the embodiment of the present invention is now described with reference to the structure for better understanding.

In this example, RN8 is the first RN, RN2 is the second RN, and RN7 is the third RN. It is easy to understand that RN8, RN2, and RN7 are specific examples, and it should be noted that, in this example, a second RN and a third RN are taken as examples for illustration, and actually, in the scheme, there may be a plurality of second RNs and third RNs, that is, in this case, there are a plurality of active relay link paths and a plurality of standby relay link paths, but in the case of knowing the implementation of one active relay link path and one standby relay link path, the implementation under the plurality of paths is also easy to know.

As shown in FIG. 4, in the process of adding RN8 to the network, the selected path may be RN8- > RN2- > Donor gNB, or RN8- > RN7- > Donor gNB. In the L2IAB architecture, RN2 and RN7 may report the load status through F1 signaling, including wireless load, hardware load, and transmission load. In the LAB architecture of L3, RN2 and RN7 may pass the load condition over the Ng interface. Meanwhile, DgNB knows the channel quality of RN7 and RN2, so DgNB can configure RN8 according to the channel quality of RN7 and RN2 and the load of RN7 and RN 2.

That is, in the implementation, at the DgNB side, the load of the second RN and/or the third RN is reported through the F1 signaling in the L2IAB architecture; and/or the presence of a gas in the gas,

the load of the second RN and/or the third RN is transferred through the Ng interface in the LAB architecture of L3.

It can also be seen that in step 102 implementation, the channel quality between the DgNB and the second RN, and the channel quality between the DgNB and the third RN are determined;

after receiving the measurement report of the first RN, determining the channel quality between the first RN and the second RN and the channel quality between the first RN and the third RN according to the measurement report;

there is no direct relationship between the four channel qualities and thus there is no timing relationship in determining them, which can be determined as desired in an implementation.

Since the IAB network is mainly used to extend network coverage, the assumed working scenario of the IAB node is one active link and one standby link. The IAB node automatically switches to the standby link when the active link is interrupted. The following will explain the procedures including link establishment and link handover.

Example 1:

in this example, an explanation will be made of an implementation of the link establishment procedure.

Fig. 5 is a schematic flow chart of a path configuration process, which may include:

step 501, the DgNB sends a path configuration command to RN8 via RN 7;

step 502, RN8 returns path configuration response to DgNB via RN 7.

The specific process may be as follows:

1: after the RN8 is powered on, the RN7 is selected to access the network as the UE, and in the process of accessing the network, the RN is selected to access the network according to the cell selection criterion.

2: since RN7 does not have a Radio Resource Control (RRC) function, the RRC of DgNB configures measurement for RN8, and RN8 reports the measurement to RN7 and RN 2. Namely: in an implementation, on the DgNB side, the DgNB may configure the first RN with measurements of the second RN and the third RN through the RRC function.

3: according to the channel quality of RN8- > RN7 and RN8- > RN2 reported by RN8, the load of RN7 and RN2, and the channel quality from RN7 and RN2 to DgNB, the DgNB assumes that RN8- > RN2- > DgNB is calculated to be the best path, that is, RN8- > RN2- > DgNB will be used as the active relay link path, and RN8- > RN7- > DgNB will be used as the standby relay link path.

4: DgNB sends RRC message through RN7 to configure access path RN8- > RN2- > DgNB.

5: RN8 maintains a connection with RN7 while RN8 is connected to RN2 independently of another communication module for connecting RN7, and RN2 is configured as a main link and RN7 is a backup link. Namely: in implementation, on the accessed RN side, the first communication module may be used to perform data transmission on the active relay link path, and when data transmission on the standby relay link path is needed, the second communication module may be used to perform data transmission.

Example 2:

in this example, the implementation of the link recovery process will be described.

As described in example 1, RN8- > RN2- > DgNB is currently the active link and RN8- > RN7- > DgNB is the standby link.

Mode 1:

if RN8- > RN2 link is interrupted, RN8 initiates the activation of the standby link and activates the link deletion process.

That is, in an implementation, when the path of the active relay link is interrupted, the method may further include:

activating a backup relay link path; and/or the presence of a gas in the gas,

the active relay link path is deleted.

Fig. 6 is a schematic flowchart of an implementation of the method 1 in the case of a link failure, as shown in the figure, the method may include:

step 601, RN8 sends an active standby path request to DgNB via RN 7;

step 602, DgNB returns an active standby path acknowledgement to RN8 via RN 7.

In an implementation, the active relay link path interruption may be detected in measurements made in the configuration of the DgNB. Specifically, the DgNB configures measurement for RN8, and when RN8 measures the signal strength of RN2 using the configured measurement configuration, high frequency flash occurs, i.e., data transmission to RN2 is interrupted, and the RN7 is directly handed over. And simultaneously sending a switching request to activate the standby link. In this case, the IAB node initiates an active standby link request by itself, and the active standby link request includes (deletes) the disconnected active link. This allows for updating the maintenance of the IAB node link in the DgNB.

When RN7 becomes the active link, since another communication module connecting RN8 and RN2 is idle, this communication module initiates the cell selection procedure, selecting RN9 as the backup link. The link establishment procedure in embodiment 1 is then invoked to establish RN9 as a backup link. That is, in the implementation, on the RN side of the access, after the relay link path is deleted and activated, the method may further include:

Mode 2:

let RN2- > DgNB link down.

In an implementation, when the path of the active relay link is interrupted, the method may further include:

Specifically, when the RN2-DgNB link is broken, RN8 cannot obtain an indication to reestablish the link from the DgNB, since RN8 does not know that the RN2 and DgNB relay link have been broken, and the current relay node RN2 has no RRC function. Then there are two schemes that can trigger RN8 to switch links:

scheme 1: the DgNB initiates a standby link activation and a link update.

That is, on the DgNB side, the first RN is instructed to activate the backup relay link path through the backup relay link path.

Fig. 7 is a schematic flowchart of implementation of scheme 1 in mode 2 under a link failure condition, as shown in the figure, the implementation may include:

step 701, the DgNB sends an activate backup path command to RN8 via RN 7;

step 702, RN8 returns an active standby path response to DgNB via RN 7.

Specifically, since in the above embodiment 1, DgNB maintains the backup link path of RN8, DgNB can detect the link failure of RN2- > DgNB, and then DgNB can send a command to activate the backup path through backup path DgNB- > RN7- > RN 8. The scheme is suitable for an L2 relay architecture.

Scheme 2: RN8 initiates backup link activation and link update.

That is, on the DgNB side, the first RN is instructed to activate the standby relay link path according to the request of the first RN.

On the accessed RN side, the RN on the relay link path is activated to inform the interruption of the relay link path. Of course, after receiving the notification and knowing that the link is interrupted, the first RN activates the standby relay link path; and/or, deleting the active relay link path.

Fig. 8 is a schematic flow chart of implementation of scheme 2 in mode 2 under a link failure condition, as shown in the figure, the implementation may include:

step 801, RN2 sending link interruption indication to RN 8;

step 802, RN8 sends an active standby path request to DgNB via RN 7;

step 803, DgNB returns an active standby path acknowledgement to RN8 via RN 7.

Fig. 9 is a schematic diagram of an L3 relay implementation flow of scheme 2 in the case of link failure, where if the L3 relay is implemented, the message flow as shown in the figure may include:

step 901, RN2 sends link interruption indication to RN 8;

step 902, RN8 sends an activate backup path request to RN 7;

step 903, RN7 sends a request for activating the backup path to DgNB;

step 904, the DgNB returns an active standby path acknowledgement to RN 7;

step 905, RN7 returns an active alternate path acknowledgement to RN 8.

Specifically, after detecting the link with the DgNB, the RN2 sends a link failure indication to the RN8 because the link with the RN8 has not been broken, and after receiving the indication, the RN8 starts the backup path activation procedure.

Example 3:

in this embodiment, the UE has multiple active links at the same time, and the UE is free to select any link for transmission. I.e., in the case where there are multiple active relay link paths and multiple standby relay link paths. In this case:

on the DgNB side, when there are at least two relay link paths, the method further includes:

On the accessed RN side, when there are at least two active relay link paths, the method further includes:

Specifically, the RN may perform two kinds of transmission on multiple links:

1: the same duplicate packets are sent over multiple links.

For example, Data packets of PDCP (Packet Data Convergence Protocol) PDUs (Protocol Data Unit) 1, 2, and 3 are transmitted on the link 1, and the

PDCP PDUs

1, 2, and 3 are repeatedly transmitted on the link 2, so as to enhance reliable transmission. Thus, transmission on one link fails and transmission on the other link succeeds.

In this transmission scheme, the PDCP entity at the opposite end serves as an anchor point for duplicate transmission, and the receiving end discards the PDCP PDUs repeatedly received by using a PDCP SN (Sequence Number) as a duplicate detection identifier.

2: different data packets are sent over the multi-hop link.

For example, the data packets of the

PDCP PDUs

1, 2, 3 are transmitted on the link 1, and the data packets of the

PDCP PDUs

4, 5, 6 are transmitted on the link 2, so that the throughput can be increased.

Under the sending mode, the PDCP entity at the opposite end is responsible for a reordering entity received by the multi-hop path and carries out reordering according to the PDCP SN sequence number. For example, the PDCP SN numbers received from the two links are sequentially 1, 4, 2, 5, 6, 3, and then the reordering is performed according to the PDCP SNs.

Based on the same inventive concept, the embodiment of the present invention further provides a base station, an RN, a multi-hop relay configuration device, a measurement configuration device in multi-hop relay, and a multi-hop relay configuration device, and because the principle of solving the problem of these devices is similar to a multi-hop relay configuration method, a measurement configuration method in multi-hop relay, and a multi-hop relay configuration method, the implementation of these devices may refer to the implementation of the method, and the repeated parts are not repeated.

When the technical scheme provided by the embodiment of the invention is implemented, the implementation can be carried out as follows.

Fig. 10 is a schematic structural diagram of a base station, as shown in the figure, the base station includes:

the processor 1000, which is used to read the program in the memory 1020, executes the following processes:

a transceiver 1010 for receiving and transmitting data under the control of the processor 1000, performing the following processes:

and informing the first RN of the configuration result of the relay link path.

Where in fig. 10, the bus architecture may include any number of interconnected buses and bridges, with various circuits being linked together, particularly one or more processors represented by processor 1000 and memory represented by memory 1020. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 1010 may be a number of elements including a transmitter and a transceiver providing a means for communicating with various other apparatus over a transmission medium. The processor 1000 is responsible for managing the bus architecture and general processing, and the memory 1020 may store data used by the processor 1000 in performing operations.

Fig. 11 is a schematic structural diagram of an RN providing access, and as shown in the figure, the RN includes:

the processor 1100, which reads the program in the memory 1120, performs the following processes:

a transceiver 1110 for receiving and transmitting data under the control of the processor 1100.

Where in fig. 11, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 1100, and various circuits, represented by memory 1120, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 1110 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium. For different user devices, the user interface 1130 may also be an interface capable of interfacing with a desired device, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

The processor 1100 is responsible for managing the bus architecture and general processing, and the memory 1120 may store data used by the processor 1100 in performing operations.

Fig. 12 is a schematic structural diagram of an access RN, and as shown in the figure, the RN includes:

a processor 1200 for reading the program in the memory 1220 and executing the following processes:

a transceiver 1210 for receiving and transmitting data under the control of the processor 1200.

activating a backup relay link path; and/or the presence of a gas in the gas,

the active relay link path is deleted.

Where in fig. 12, the bus architecture may include any number of interconnected buses and bridges, with various circuits of one or more processors represented by processor 1200 and memory represented by memory 1220 being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 1210 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium. For different user devices, the user interface 1230 may also be an interface capable of interfacing with a desired device externally, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

The processor 1200 is responsible for managing the bus architecture and general processing, and the memory 1220 may store data used by the processor 1200 in performing operations.

Fig. 13 is a schematic structural diagram of a multi-hop relay configuration apparatus, as shown in the figure, the apparatus may include:

a measurement configuration module 1301, configured to configure a second RN and measure a third RN for the first RN when the first RN accesses the network through the second RN, where the second RN and the third RN are RNs that can access the first RN to the network;

a relay link path determining module 1302, configured to determine a channel quality between the DgNB and the second RN, and a channel quality between the DgNB and the third RN; after receiving a measurement report of the first RN, determining the channel quality between the first RN and the second RN and the channel quality between the first RN and the third RN according to the measurement report; determining an active relay link path of the first RN according to the load of the second RN, the load of the third RN and the channel quality, and taking other relay link paths as standby relay link paths;

a notifying module 1303, configured to notify the first RN of the relay link path configuration result.

The specific implementation may refer to the implementation of the multi-hop relay configuration method and the base station.

Fig. 14 is a schematic structural diagram of a measurement configuration apparatus in a multihop relay, as shown in the figure, the measurement configuration apparatus may include:

a searching module 1401, configured to search a peripheral first RN when serving as a second RN and/or a third RN;

a reporting module 1402, configured to report the searched first RN to the DgNB, so that the DgNB configures a second RN for the first RN and measures a third RN when the first RN accesses the network through the second RN, where the second RN and the third RN are RNs capable of accessing the first RN to the network.

Specific implementation can be seen in a measurement configuration method in multihop relay and implementation of RN providing access.

Fig. 15 is a schematic structural diagram of a multi-hop relay configuration apparatus, as shown in the figure, the apparatus may include:

a measurement module 1501, configured to measure, when serving as a first RN, according to the configuration of a DgNB when the first RN accesses the network through a second RN, where the DgNB configures the first RN to measure a second RN and measure a third RN, and the second RN and the third RN are RNs capable of accessing the first RN to the network;

a sending module 1502, configured to send a measurement report to the DgNB, where the measurement report includes a channel quality between the first RN and the second RN, and a channel quality between the first RN and the third RN;

a relay link path processing module 1503, configured to receive the relay link path configuration result sent by the DgNB, activate the active relay link path according to the configuration, and use the other relay link paths as standby relay link paths.

The specific implementation may refer to the implementation of the multi-hop relay configuration method and the access RN.

For convenience of description, each part of the above-described apparatus is separately described as being functionally divided into various modules or units. Of course, the functionality of the various modules or units may be implemented in the same one or more pieces of software or hardware in practicing the invention.

In summary, the present invention provides a scheme for link establishment and maintenance in a 5G relay network. In the scheme, the relay node searches two links, one active link and one standby link in the process of initially accessing the network. The relay node can connect to and activate the standby link when the link is interrupted, connect to the new node, and update the link configuration of the DgNB.

In the embodiment, specific implementation manners such as a scheme for selecting a link by the DgNB, a procedure for configuring a link by the DgNB, a procedure for establishing a relay link interruption, a procedure for relay activating a standby link, a procedure for relay initiating updating of the configuration of the DgNB link, a procedure for detecting a link interruption by the DgNB, a procedure for activating a standby link by the DgNB, and a procedure for initiating updating of the configuration of the DgNB link by the DgNB are further specifically provided.

As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams 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 diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory 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 memory 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.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A multi-hop relay configuration method, comprising:

when a first relay node RN accesses a network through a second RN, a donor base station DgNB configures the second RN for the first RN and measures a third RN, wherein the second RN and the third RN are RNs which can access the first RN into the network;

and notifying the configuration result of the relay link path to the first RN so that the first RN activates the active relay link path according to the configuration, activating the standby relay link path when the active relay link path of the first RN is interrupted, deleting the active relay link path, starting a cell selection process by using a first communication module, and taking the selected relay link path as the standby relay link path.

2. The method of claim 1, wherein the DgNB configures measurements for the first RN for the second RN and the third RN via a Radio Resource Control (RRC) function.

3. The method of claim 1 or 2, wherein when the active relay link path is broken, further comprising:

4. The method of claim 1 or 2, wherein when there are at least two of the active relay link paths, further comprising:

5. A measurement configuration method in multihop relay is characterized by comprising the following steps:

the second RN and/or the third RN search the peripheral first RN;

reporting the searched first RN to a DgNB (neighbor node B), so that the DgNB configures the second RN and measures the third RN for the first RN when the first RN accesses the network through the second RN, determines the channel quality between the first RN and the second RN and the channel quality between the first RN and the third RN according to the measurement report, determines an active relay link path of the first RN according to the load of the second RN, the load of the third RN and the channel quality, and takes other relay link paths as standby relay link paths; notifying a relay link path configuration result to a first RN, so that the first RN activates an active relay link path according to configuration, activates a standby relay link path when the active relay link path of the first RN is interrupted, deletes the active relay link path, starts a cell selection process by using a first communication module, and takes the selected relay link path as the standby relay link path;

the second RN and the third RN are RNs which can access the first RN to the network.

6. A multi-hop relay configuration method, comprising:

the first RN receives a relay link path configuration result sent by the DgNB, activates a relay link path according to configuration, and takes other relay link paths as standby relay link paths;

and when the active relay link path of the first RN is interrupted, activating the standby relay link path, deleting the active relay link path, starting a cell selection process by using the first communication module, and taking the selected relay link path as the standby relay link path.

7. The method of claim 6, wherein an active relay link path outage is detected in measurements made in a configuration of the DgNB and/or the active relay link path outage is notified by the RN on the active relay link path.

8. The method of claim 6 or 7, wherein a first communication module is used for data transmission on the active relay link path and a second communication module is used for data transmission when data transmission on the standby relay link path is required.

9. The method of claim 6 or 7, wherein when there are at least two of the active relay link paths, further comprising:

10. A base station, comprising:

11. The base station of claim 10, wherein the measurements for the second RN and the third RN are configured for the first RN by RRC function.

12. The base station of claim 10 or 11, further comprising, when the active relay link path is broken:

13. The base station of claim 10 or 11, wherein when there are at least two of said active relay link paths, further comprising:

14. An RN, wherein the RN comprises:

the second RN and the third RN are RNs which can access the first RN into a network;

15. An RN, wherein when the RN is used as a first RN, the RN comprises:

when the path of the active relay link of the first RN is interrupted, activating a standby relay link path, deleting the active relay link path, starting a cell selection process by using a first communication module, and taking the selected relay link path as the standby relay link path;

16. The RN of claim 15, wherein an active relay link path interruption is detected in measurements made in a configuration of the DgNB and/or wherein an active relay link path interruption is notified by the RN on an active relay link path.

17. The RN according to claim 15 or 16, wherein a first communication module is used for data transmission on the active relay link path, and a second communication module is used for data transmission when data transmission on the standby relay link path is required.

18. The RN of claim 15 or 16, wherein when there are at least two of the active relay link paths, further comprising:

19. A multi-hop relay configuration apparatus, comprising:

and the notification module is used for notifying the configuration result of the relay link path to the first RN so that the first RN activates the active relay link path according to the configuration, activates the standby relay link path when the active relay link path of the first RN is interrupted, deletes the active relay link path, starts a cell selection process by using the first communication module, and takes the selected relay link path as the standby relay link path.

20. An apparatus for measurement configuration in multihop relay, comprising:

a reporting module, configured to report the searched first RN to a DgNB, so that the DgNB configures, when the first RN accesses the network through the second RN, the second RN and a third RN for the first RN to measure, and determines, according to a measurement report, a channel quality between the first RN and the second RN and a channel quality between the first RN and the third RN, and determines, according to a load of the second RN, a load of the third RN, and the channel qualities, an active relay link path of the first RN, and uses other relay link paths as standby relay link paths; notifying a relay link path configuration result to a first RN, so that the first RN activates an active relay link path according to configuration, activates a standby relay link path when the active relay link path of the first RN is interrupted, deletes the active relay link path, starts a cell selection process by using a first communication module, and takes the selected relay link path as the standby relay link path;

21. A multi-hop relay configuration apparatus, comprising:

the relay link path processing module is used for receiving a relay link path configuration result sent by the DgNB, activating a relay link path according to the configuration, and taking other relay link paths as standby relay link paths;