CN107205283B

CN107205283B - Method and device for establishing return channel

Info

Publication number: CN107205283B
Application number: CN201610156844.4A
Authority: CN
Inventors: 刁心玺; 王欣晖
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2016-03-18
Filing date: 2016-03-18
Publication date: 2022-06-17
Anticipated expiration: 2036-03-18
Also published as: WO2017157139A1; CN107205283A

Abstract

The invention discloses a method for establishing a return channel, which comprises the following steps: configuring a backhaul control channel on one or more antenna ports of a wireless node; transmitting or receiving backhaul path control information on the backhaul path control channel; and establishing a backhaul channel according to the backhaul path control information. The invention can reduce the time delay of the return path and improve the restructuring capability of the return path topological structure.

Description

Method and device for establishing return channel

Technical Field

The present invention relates to the field of radio communications, and in particular, to a method and an apparatus for establishing a backhaul channel.

Background

The wireless backhaul link has the advantages of simple construction, short laying time and flexible laying position, can be widely applied to indoor/outdoor environments, and particularly can become a transmission means in priority in occasions where optical fiber channels cannot be/are difficult to lay due to the influence of geographical environments.

At present, the microwave fixed access technology is already applied to backhaul transmission of base stations in a mature way, and in the subsequent development of cellular mobile communication networks and radio access networks, high-density deployment of base stations has the following new requirements for wireless backhaul: wireless backhaul channels need to accommodate large bandwidth fluctuations of data traffic, e.g., up to tens of times bandwidth fluctuations; the wireless backhaul needs to have low transmission delay, such as end-to-end delay less than 1 millisecond; the wireless backhaul needs to have high reliability and robustness, such as the transmission capability of the backhaul is not affected or the basic transmission capability is maintained in case of a few relay node failures;

existing wireless backhaul technologies include AD-HOC (infrastructure-free network/temporary build network) technology and MESH (wireless MESH network) technology, which are still under development, and existing transmission schemes thereof cannot meet the future requirements for wireless backhaul transmission capability.

In the face of the demand goal of wireless backhaul technology, the shortcomings of the wireless backhaul technology in the existing land mobile communication network are: the relay delay of the relay node is limited by TTI (Transmission Time Interval), and as the number of relay hops increases, the delay of a return path is accumulated hop by hop, and the end-to-end delay after multi-hop return is difficult to be less than 1 millisecond; in the prior art, the real-time alignment of a return beam is difficult to keep, so that the transmission efficiency is reduced; the prior art lacks a backhaul path reconfiguration method.

Disclosure of Invention

The technical problem to be solved by the present invention is to provide a method and an apparatus for establishing a backhaul channel, which can reduce the time delay of the backhaul path and improve the reconfiguration capability of the backhaul path topology structure.

The invention discloses a method for establishing a return channel, which comprises the following steps:

configuring a backhaul control channel on one or more antenna ports of a wireless node;

transmitting or receiving backhaul path control information on the backhaul path control channel;

and establishing a backhaul channel according to the backhaul path control information.

Optionally, the establishing a backhaul channel according to the backhaul path control information includes:

establishing a backhaul channel between at least one antenna port of the wireless node and an antenna port of at least one neighboring wireless node of the wireless node.

Optionally, the establishing a backhaul channel according to the backhaul path control information further includes:

establishing a radio frequency direct-release return path or a radio frequency variable-frequency amplification return path between a first type antenna port of the wireless node and a second type antenna port of the wireless node;

the first antenna port is an antenna port for backhaul transmission, and the second antenna port is an antenna port facing a wireless terminal.

Optionally, when a backhaul channel is established between two antenna ports of the wireless node and antenna ports of two adjacent wireless nodes of the wireless node, the establishing a backhaul channel according to the backhaul path control information further includes:

and establishing a radio frequency direct-amplification return path or a radio frequency variable-frequency amplification return path between two first-class antenna ports of the wireless node.

Optionally, establishing a radio frequency direct-ranging backhaul channel between two first-type antenna ports of the wireless node includes:

and connecting the receiving channel of at least one antenna port of the two first-class antenna ports with the transmitting channel of the other antenna port on corresponding frequency and bandwidth by using the frequency point and/or bandwidth information of the backhaul channel indicated by the backhaul path control channel.

Optionally, the establishing a radio frequency conversion amplification backhaul channel between two first-type antenna ports of the wireless node includes:

the receiving carrier frequency of at least one of the two first type antenna ports is converted to the transmitting carrier frequency of the other antenna port.

Optionally, establishing a radio frequency direct-amplifying return path between the first type of antenna port of the wireless node and the second type of antenna port of the wireless node includes:

and connecting a receiving channel of at least one antenna port of the first type of antenna port and the second type of antenna port with a transmitting channel of another antenna port on corresponding frequency and bandwidth by using frequency point and/or bandwidth information of a backhaul channel indicated by a backhaul path control channel.

Optionally, the establishing a rf frequency conversion amplification backhaul channel between the first type of antenna port of the wireless node and the second type of antenna port of the wireless node includes:

and converting the receiving carrier frequency of at least one antenna port of the first type of antenna port and the second type of antenna port into the transmitting carrier frequency of the other antenna port.

Optionally, configuring a backhaul control channel on one or more antenna ports of the wireless node, comprising:

configuring an in-band backhaul path control channel on specified time-frequency resources of a millimeter wave backhaul frequency band used by one or more antenna ports of a wireless node; and/or the presence of a gas in the gas,

configuring an out-of-band backhaul control channel on specified time-frequency resources of a frequency band below 20GHz used by one or more antenna ports of a wireless node;

wherein the in-band backhaul path control channel transmits or receives using a millimeter wave beam having a half-power angle of less than or equal to 30 degrees;

wherein the out-of-band backhaul control channel transmits or receives using a beam having a half-power angle greater than 15 degrees and a frequency less than 20 GHz.

Optionally, the sending or receiving backhaul path control information on the backhaul path control channel includes:

and the wireless node transmits or receives the backhaul control information between the backhaul control channel and the single-hop adjacent wireless node thereof by using the backhaul control channel.

Optionally, establishing a backhaul channel between the antenna port of the wireless node and an antenna port of a neighboring wireless node of the wireless node includes:

the wireless node sends a request signal for establishing a backhaul channel through the backhaul path control channel on an antenna port; after receiving a response signal of a neighboring wireless node allowing to establish a backhaul channel, establishing the backhaul channel with the neighboring wireless node on a time-frequency resource indicated by the backhaul path control channel; or

After receiving an indication signal of an adjacent wireless node supporting a backhaul channel through the backhaul control channel on an antenna port, the wireless node sends a request signal for establishing the backhaul channel through the backhaul control channel; after receiving a response signal from the backhaul control channel that allows the neighboring wireless node to establish a backhaul channel, establishing a backhaul channel with the neighboring wireless node on the time-frequency resources indicated by the backhaul control channel.

Optionally, establishing a backhaul between the antenna port of the wireless node and an antenna port of an adjacent wireless node of the wireless node, further includes:

if the response signal which is sent by the adjacent wireless node and allows the establishment of the backhaul channel is not received within the preset time, the beam direction of the antenna port is adjusted, and the request signal for establishing the backhaul channel is sent again on the antenna port after the beam direction is adjusted; or

And if the indication signal of the wireless node supporting the backhaul channel is not received within the preset time, adjusting the beam direction of the antenna port, and re-receiving the indication signal of the wireless node supporting the backhaul channel at the antenna port after the beam direction is adjusted.

Optionally, after a backhaul channel is established between the first antenna port of the wireless node and the second antenna port of the neighboring wireless node of the wireless node according to the backhaul path control information, the method further includes:

a) the wireless node adjusts the transmission beam direction of the first antenna port by an angle adjustment amount theta;

b) the wireless node sends a amplitude-comparison direction-finding signal to a second antenna port of the adjacent wireless node by using an in-band or out-of-band backhaul control channel;

c) the second antenna port of the adjacent wireless node receives the amplitude comparison direction finding signal, measures the amplitude of the received signal and feeds back the measured amplitude value of the received signal to the wireless node;

d) the wireless node judges whether the amplitude value of the received signal fed back by the adjacent wireless node reaches a maximum value, if so, the adjustment of the transmission beam direction is finished, otherwise, the transmission beam direction is adjusted by a new angle adjustment quantity

Returning to the step b).

a) the wireless node adjusts the direction of the receiving wave beam of the first antenna port by an angle adjustment amount theta;

b) the wireless node receives a amplitude comparison direction-finding signal sent by a second antenna port of the adjacent wireless node by using an in-band or out-of-band return path control channel on a first antenna port, and measures the amplitude of the received signal;

c) the wireless node judges whether the amplitude value of the received signal reaches a maximum value, if so, the adjustment of the direction of the received wave beam is finished, otherwise, the direction of the received wave beam is adjusted by a new angle adjustment quantity

Returning to the step b).

Optionally, the wireless node comprises: a backhaul transmission relay node, a macro base station node, a micro base station node, or a wireless-to-wired transition node.

Optionally, the establishing a backhaul channel between at least one antenna port of the wireless node and an antenna port of at least one neighboring wireless node of the wireless node comprises:

establishing at least one backhaul channel from a first micro cell supported by a first wireless node to a first macro cell supported by a second wireless node, and/or establishing at least one backhaul channel from the first micro cell supported by the first wireless node to a second macro cell supported by a third wireless node;

the types of the backhaul from the micro cell to the macro cell include: a transmission channel of an air interface contained from the micro cell to the macro cell or a transmission channel of a wired-wireless interface unit contained from the micro cell to the macro cell;

the second wireless node and the third wireless node are both adjacent wireless nodes of the first wireless node.

Optionally, the backhaul path control information includes at least one of the following information:

the method comprises the steps of connection relation of return channels among wireless nodes, connection relation of return channels in the wireless nodes, bandwidth of the return channels, frequency points of the return channels, access guidance of the return channels, reconfiguration information of the return channels and beam alignment control information of the return channels.

The invention discloses a device for establishing a return channel, which comprises:

a backhaul control channel configuration module for configuring a backhaul control channel on one or more antenna ports of a wireless node;

a backhaul path control information transmission module, configured to send or receive backhaul path control information on the backhaul path control channel;

and the return channel establishing module is used for establishing a return channel according to the return path control information.

Optionally, the backhaul establishment module is configured to establish a backhaul according to the backhaul path control information, and includes:

Optionally, the backhaul channel establishing module is configured to establish a backhaul channel according to the backhaul path control information, and further includes: establishing a radio frequency direct-release return path or a radio frequency variable-frequency amplification return path between a first type antenna port of the wireless node and a second type antenna port of the wireless node;

Optionally, the backhaul establishment module is configured to establish a backhaul channel according to the backhaul path control information when a backhaul channel is established between two antenna ports of the wireless node and antenna ports of two adjacent wireless nodes of the wireless node, and the backhaul establishment module further includes:

Optionally, the backhaul establishing module is configured to establish a radio frequency direct-amplifying backhaul channel between two first-type antenna ports of the wireless node, and includes:

Optionally, the backhaul establishing module is configured to establish a radio frequency conversion amplification backhaul between two first antenna ports of the wireless node, and includes:

Optionally, the backhaul establishing module is configured to establish a radio frequency direct-amplifying backhaul channel between a first type antenna port of the wireless node and a second type antenna port of the wireless node, and includes:

and connecting the receiving channel of at least one antenna port of the first type of antenna port and the second type of antenna port with the transmitting channel of the other antenna port on corresponding frequency and bandwidth by using the frequency point and/or bandwidth information of the backhaul channel indicated by the backhaul path control channel.

Optionally, the backhaul establishing module is configured to establish a radio frequency variable-frequency amplification backhaul between a first type antenna port of the wireless node and a second type antenna port of the wireless node, and includes:

Optionally, the backhaul control channel configuring module is configured to configure a backhaul control channel on one or more antenna ports of the wireless node, and includes:

wherein the in-band backhaul control channel transmits or receives using a millimeter wave beam having a half-power angle of less than or equal to 30 degrees;

Optionally, the backhaul control information transmission module is configured to send or receive backhaul control information on the backhaul control channel, and includes:

Optionally, the backhaul establishing module is configured to establish a backhaul between an antenna port of the wireless node and an antenna port of an adjacent wireless node of the wireless node, and includes:

Optionally, the backhaul establishing module is configured to establish a backhaul between an antenna port of the wireless node and an antenna port of an adjacent wireless node of the wireless node, and further includes:

if a response signal which is sent by an adjacent wireless node and allows the establishment of a backhaul channel is not received within a preset time, adjusting the beam direction of the antenna port, and retransmitting a request signal for establishing the backhaul channel on the antenna port after the beam direction is adjusted; or

Optionally, the apparatus further comprises:

a beam alignment module, configured to perform the following processing after establishing a backhaul channel between a first antenna port of the wireless node and a second antenna port of an adjacent wireless node of the wireless node according to the backhaul path control information:

Returning to the step b).

Optionally, the apparatus further comprises: a beam alignment module, configured to perform the following processing after establishing a backhaul channel between a first antenna port of the wireless node and a second antenna port of an adjacent wireless node of the wireless node according to the backhaul path control information:

a) the wireless node adjusts the receiving wave beam direction of the first antenna port by an angle adjustment amount theta;

Returning to the step b).

Optionally, the backhaul establishing module is configured to establish a backhaul between at least one antenna port of the wireless node and an antenna port of at least one neighboring wireless node of the wireless node, and includes:

Compared with the prior art, the method and the device for establishing the backhaul channel provided by the invention have the advantages that the backhaul control channel is configured on one or more antenna ports of the wireless node, the backhaul control information is sent or received on the backhaul control channel, and the backhaul channel is established according to the backhaul control information. The invention can reduce the time delay of the return path, improve the reconfiguration capability of the return path topological structure and keep the real-time alignment of the return beam.

Drawings

Fig. 1 is a flowchart of a method for establishing a backhaul channel according to an embodiment of the present invention.

Fig. 2 is a schematic diagram of an apparatus for establishing a backhaul according to an embodiment of the present invention.

Fig. 3 is a schematic diagram of an apparatus for establishing a backhaul channel on a wireless node according to an embodiment of the present invention.

Fig. 4 is a diagram illustrating a backhaul configured between adjacent wireless nodes according to an embodiment of the present invention.

Detailed Description

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

Embodiment 1, an example of a method for establishing a reconfigurable low-latency backhaul

As shown in fig. 1, an embodiment of the present invention provides a method for establishing a backhaul channel, including the following steps:

step S101, configuring a backhaul control channel on one or more antenna ports of a wireless node;

step S102, sending or receiving backhaul control information on the backhaul control channel;

step S103, establishing a return channel according to the return path control information;

wherein the backhaul path control information includes at least one of: backhaul channel connection relation among wireless nodes, backhaul channel connection relation in wireless nodes, backhaul channel bandwidth, backhaul channel frequency point, backhaul channel access guidance, backhaul channel reconfiguration information, backhaul channel beam alignment control information;

wherein the establishing a backhaul channel according to the backhaul path control information includes:

establishing a backhaul channel between at least one antenna port of the wireless node and an antenna port of at least one neighboring wireless node of the wireless node;

wherein, the establishing a backhaul channel according to the backhaul path control information further includes:

the first antenna port is used for backhaul transmission;

the second type antenna port is an antenna port facing a wireless terminal;

wherein the wireless node comprises: a backhaul transmission relay node, a macro base station node, a micro base station node, or a wireless-to-wired transition node.

Wherein, when a backhaul channel is established between two antenna ports of the wireless node and antenna ports of two adjacent wireless nodes of the wireless node, the establishing a backhaul channel according to the backhaul path control information further includes:

Wherein configuring a backhaul control channel on one or more antenna ports of a wireless node comprises:

wherein the in-band backhaul control channel transmits or receives using a millimeter wave beam having a half-power angle of less than or equal to 30 degrees; preferably, the in-band backhaul path control channel transmits or receives using a millimeter wave beam having a half-power angle smaller than 15 degrees;

the out-of-band backhaul control channel transmits or receives by using a beam with a half-power angle larger than 15 degrees and a frequency lower than 20 GHz;

wherein sending or receiving backhaul path control information on the backhaul path control channel comprises:

the wireless node uses the return path control channel to send or receive return path control information between the wireless node and a single-hop adjacent wireless node thereof;

wherein establishing a backhaul channel between an antenna port of the wireless node and an antenna port of an adjacent one of the wireless nodes comprises:

After receiving an indication signal of an adjacent wireless node supporting a backhaul channel through the backhaul control channel on an antenna port, the wireless node sends a request signal for establishing the backhaul channel through the backhaul control channel; after receiving a response signal that allows the adjacent wireless node to establish a backhaul channel from the backhaul control channel, establishing a backhaul channel with the adjacent wireless node on a time-frequency resource indicated by the backhaul control channel;

wherein establishing a backhaul between an antenna port of the wireless node and an antenna port of an adjacent wireless node of the wireless nodes further comprises:

If the indication signal of the wireless node supporting the backhaul channel is not received within the preset time, adjusting the beam direction of the antenna port, and re-receiving the indication signal of the wireless node supporting the backhaul channel at the antenna port after the beam direction is adjusted;

wherein, establishing a radio frequency direct-amplifying return path between two first-class antenna ports of the wireless node comprises:

connecting a receiving channel of at least one antenna port of the two first-class antenna ports with a transmitting channel of the other antenna port on corresponding frequency and bandwidth by using frequency point and/or bandwidth information of a backhaul channel indicated by a backhaul path control channel;

wherein, establishing a radio frequency variable frequency amplification return channel between two first-class antenna ports of the wireless node comprises:

converting a receiving carrier frequency of at least one of the two first-type antenna ports into a transmitting carrier frequency of the other antenna port;

wherein establishing a radio frequency direct playback path between a first type of antenna port of the wireless node and a second type of antenna port of the wireless node comprises:

connecting a receiving channel of at least one antenna port of the first type of antenna port and the second type of antenna port with a transmitting channel of another antenna port on corresponding frequency and bandwidth by using frequency point and/or bandwidth information of a backhaul channel indicated by a backhaul path control channel;

wherein, establishing a radio frequency variable frequency amplification backhaul channel between a first type antenna port of the wireless node and a second type antenna port of the wireless node comprises:

converting a receiving carrier frequency of at least one of the first type of antenna port and the second type of antenna port to a transmitting carrier frequency of the other antenna port;

the transmitting carrier frequency of the second antenna port after radio frequency conversion is in a downlink frequency band used by a macro cell or a micro cell; the receiving carrier frequency of the second antenna port before radio frequency conversion is in an uplink frequency band used by a macro cell or a micro cell;

the receiving carrier wave of the first antenna port before radio frequency conversion is millimeter wave;

the millimeter waves used by the first antenna port for receiving the carrier wave before the radio frequency conversion are any one of the following:

the return channel is accessed to a carrier used by a wired transmission port;

the carrier wave output after up-conversion of the downlink carrier wave of the macro cell;

a carrier modulated by a macro cell downlink carrier.

Wherein, after establishing a backhaul channel between a first antenna port of the wireless node and a second antenna port of an adjacent wireless node of the wireless node according to the backhaul path control information, the method further comprises:

b) the wireless node transmitting a ranging direction finding signal to a second antenna port of the neighboring wireless node using an in-band or out-of-band backhaul path control channel;

Returning to the step b).

And returning to the step b).

Wherein establishing backhaul channels between the two antenna ports of the first wireless node and the antenna ports of the second wireless node and the third wireless node, respectively, comprises: establishing a backhaul from a first micro cell supported by the first wireless node to a first macro cell supported by the second wireless node and a second macro cell supported by the third wireless node, specifically including performing any one of the following processes:

establishing a transmission channel from a first micro cell to an air interface contained in a first macro cell and a second macro cell supported by a first wireless node;

establishing a transmission channel from a first micro cell supported by a first wireless node to a wired-wireless interface unit contained in a first macro cell and a second macro cell;

establishing a transmission channel from a first micro cell supported by a first wireless node to an air interface contained in a first macro cell, and establishing a transmission channel from the first micro cell supported by the first wireless node to a wired-wireless interface unit contained in a second macro cell;

establishing a transmission channel from a first micro cell supported by a first wireless node to an air interface contained in a second macro cell, and establishing a transmission channel from the first micro cell supported by the first wireless node to a wired-wireless interface unit contained in the first macro cell;

the second wireless node and the third wireless node are both adjacent nodes of the first wireless node.

Embodiment 2, an example of a backhaul establishment apparatus capable of reconfiguring low latency

As shown in fig. 2, an embodiment of the present invention provides an apparatus for establishing a backhaul, including:

a backhaul control channel configuration module 201, configured to configure a backhaul control channel on one or more antenna ports of a wireless node;

a backhaul path control information transmission module 202, configured to send or receive backhaul path control information on the backhaul path control channel;

a backhaul channel establishing module 203, configured to establish a backhaul channel according to the backhaul path control information.

The backhaul channel establishing module 203 is configured to establish a backhaul channel according to the backhaul path control information, and includes:

The backhaul channel establishing module 203 is configured to establish a backhaul channel according to the backhaul path control information, and further includes: establishing a radio frequency direct-release return path or a radio frequency variable-frequency amplification return path between a first type antenna port of the wireless node and a second type antenna port of the wireless node;

Wherein the backhaul establishment module 203 is configured to establish a backhaul according to the backhaul path control information when a backhaul is established between two antenna ports of the wireless node and antenna ports of two adjacent wireless nodes of the wireless node, and further includes:

The backhaul channel establishing module 203 is configured to establish a radio frequency direct-amplifying backhaul channel between two first-type antenna ports of the wireless node, and includes:

The backhaul channel establishing module 203 is configured to establish a radio frequency variable frequency amplification backhaul channel between two first antenna ports of the wireless node, and includes:

The backhaul channel establishing module 203 is configured to establish a radio frequency direct-amplifying backhaul channel between a first type antenna port of the wireless node and a second type antenna port of the wireless node, and includes:

The backhaul channel establishing module 203 is configured to establish a radio frequency variable frequency amplification backhaul channel between a first type antenna port of the wireless node and a second type antenna port of the wireless node, and includes:

transforming a receiving carrier frequency of at least one of the first type of antenna port and the second type of antenna port to a transmitting carrier frequency of the other antenna port.

Wherein the backhaul control channel configuring module 201 is configured to configure a backhaul control channel on one or more antenna ports of a wireless node, and includes:

The backhaul path control information transmission module 202 is configured to send or receive backhaul path control information on the backhaul path control channel, and includes:

Wherein the backhaul establishing module 203 is configured to establish a backhaul between an antenna port of the wireless node and an antenna port of an adjacent wireless node of the wireless nodes, and includes:

Wherein the backhaul establishing module 203 is configured to establish a backhaul between an antenna port of the wireless node and an antenna port of an adjacent wireless node of the wireless nodes, and further includes:

if the response signal which is sent by the adjacent wireless node and allows the establishment of the backhaul channel is not received within the preset time, the beam direction of the antenna port is adjusted, and the request signal for establishing the backhaul channel is sent again on the antenna port after the beam direction is adjusted; or alternatively

Wherein the apparatus further comprises:

a beam alignment module 204, configured to, after establishing a backhaul channel between a first antenna port of the wireless node and a second antenna port of a neighboring wireless node of the wireless node according to the backhaul path control information, perform the following:

Returning to the step b).

Wherein the beam alignment module 204 is configured to, after establishing a backhaul channel between the first antenna port of the wireless node and the second antenna port of the neighboring wireless node of the wireless node according to the backhaul path control information, perform the following processing:

b) the wireless node receives a amplitude comparison direction finding signal sent by a second antenna port of the adjacent wireless node by using an in-band or out-of-band return path control channel on a first antenna port, and measures the amplitude of the received signal;

Returning to the step b).

Wherein the backhaul establishing module 203 is configured to establish a backhaul between at least one antenna port of the wireless node and an antenna port of at least one neighboring wireless node of the wireless node, and includes:

Wherein the backhaul path control information includes at least one of:

Embodiment 3 example of a reconfigurable low latency wireless backhaul transmission system

An example of a reconfigurable low-latency wireless backhaul transmission system according to an embodiment of the present invention is shown in fig. 3 and 4, and the system includes:

a backhaul path control device 300 supporting the wireless node 200a/b/c of the wireless backhaul control channel (in fig. 4, in order to implement indoor and outdoor radio signal transmission, a first antenna port module 211 of the wireless node is disposed outdoors, a third antenna port module 213 for terminal communication is disposed indoors, and backhaul signal transmission is implemented between the first antenna port module 211 and the third antenna port module 213 through a radio frequency cable 301); wherein the content of the first and second substances,

the backhaul control apparatus 300 is configured to control at least one of a backhaul path, a backhaul channel time-frequency parameter, a wireless node backhaul service data selection, and a wireless node backhaul channel detection item through a wireless backhaul control channel supported by a wireless node 200a/b/c, and includes: a return path control information sending module and/or a return path control information receiving module;

the wireless node 200a/b/c supporting the wireless backhaul control channel is configured to establish a backhaul channel from a first micro cell to a first macro cell and a second macro cell under the control of the backhaul path control apparatus 300, and includes: a return path control channel configuration module, a return path control information transceiver module and a return path configuration module; wherein the content of the first and second substances,

the backhaul control channel configuring module 230 is configured to configure a backhaul control channel of an antenna port of the wireless node 200 facing the first and/or second direction, and includes a time-frequency position determining sub-module of the backhaul control channel;

the backhaul control information transceiver module 240 is configured to send and/or receive backhaul control information on the backhaul control channel, where the backhaul control information includes at least one of information about inter-wireless node/intra-backhaul connection relationship, backhaul bandwidth, backhaul frequency point, backhaul access guidance, backhaul reconfiguration, and backhaul beam alignment control, and the module includes a backhaul control information sending and/or receiving sub-module;

the backhaul channel configuration module 260, using the backhaul path control information, performs at least one of the following operations:

establishing a backhaul channel between an antenna port 211 of said wireless node 200 facing a first direction and an antenna port of a first neighboring wireless node 281 of said wireless node;

establishing a backhaul channel between an antenna port 212 of the wireless node 200 facing in a second direction and an antenna port of a second neighboring wireless node 282 of the wireless node;

establishing a radio frequency direct amplification channel or a radio frequency variable frequency amplification channel between an antenna port 211 facing a first direction of the wireless node 200 and an antenna port 212 facing a second direction of the wireless node;

establishing a radio frequency direct amplification channel or a radio frequency variable frequency amplification channel between an antenna port 211 facing a first direction of the wireless node 200 and a third antenna port 213 facing a wireless terminal 291/292 of the wireless node;

establishing a radio frequency direct amplification channel or a radio frequency variable frequency amplification channel between the antenna port 212 of the wireless node 200 facing the second direction and the third antenna port 213 of the wireless node facing the wireless terminal 291/292; and the number of the first and second groups,

specifically, the first micro cell is an area covered by the antenna port module 213 facing the wireless terminal of the wireless node 200 a; the first macro cell is an area covered by a first macro base station 340; the second macro cell is an area covered by the second macro base station 330.

The system of the present embodiment, wherein,

the wireless node 200a/b/c supporting the wireless backhaul control channel is configured to, under the control of the backhaul path control apparatus 300, establish a backhaul channel from the first micro cell to the first macro cell and/or the second macro cell, and includes at least one of the following steps:

establishing a transmission channel from a first micro cell supported by the first wireless node 200a to an air interface contained in the first macro cell and/or the second macro cell; specifically, the first wireless node 200a accesses the air interface 341 supported by the first macrocell antenna 340 through the beam 350 to the second wireless node 200b via the third antenna port module 213 facing the base station included in the second wireless node 200 b; and the first wireless node 200a accesses the air interface 331 supported by the second macrocell antenna 330 through the beam 360 to the third wireless node 200c via the third antenna port module 213 facing the base station comprised by the third wireless node 200 c;

establishing a transmission channel from a first micro cell supported by a first wireless node to a wired-wireless interface unit contained in a first macro cell and/or a second macro cell; specifically, the first wireless node 200a accesses the wired transmission channel included in the first macro cell through the second wireless node 200b and the antenna module 310 of the wireless-wired interface unit by the beam 350 to the second wireless node 200 b; and the first wireless node 200a accesses the wired transmission channel included in the second macro cell through the third wireless node 200c and the antenna module 320 of the wireless-wired interface unit by means of the beam 360 to the third wireless node 200 c;

establishing a transmission channel from a first micro cell supported by a first wireless node to an air interface contained in a first macro cell and establishing a transmission channel from the first micro cell supported by the first wireless node to a wired-wireless interface unit contained in a second macro cell; specifically, the first wireless node 200a accesses the air interface 341 supported by the first macrocell antenna 340 through the beam 350 to the second wireless node 200b via the third antenna port module 213 facing the base station comprised by the second wireless node 200 b; and the first wireless node 200a accesses the wired transmission channel included in the second macro cell through the third wireless node 200c and the antenna module 320 of the wireless-wired interface unit by the beam 360 to the third wireless node 200 c;

establishing a transmission channel from a first micro cell supported by a first wireless node to an air interface contained in a first macro cell and establishing a transmission channel from the first micro cell supported by the first wireless node to a wired-wireless interface unit contained in the first macro cell; the first wireless node 200a accesses an air interface 341 supported by the first macrocell antenna 340 through a beam 350 to the second wireless node 200b via a third antenna port module 213 facing the base station comprised by the second wireless node 200 b; and, the first wireless node 200a accesses the wired transmission channel included in the first macro cell via the second wireless node 200b and the antenna module 310 of the wireless-wired interface unit through the beam 350 to the second wireless node 200 b.

In fig. 4, the indoor antenna port module 213 provides a service data transmission channel to the wireless terminal 306 through an air interface signal from the first macro base station/an optical fiber transmission channel from the first macro base station via a first/second backhaul path (the first backhaul path is from the first wireless node 200a to the second wireless node 200b to the first macro base station antenna 340, or the second backhaul path is from the first wireless node 200a to the second wireless node 200b to the antenna module 310 of the wireless-wired interface unit), a frequency of an air interface 342 providing the service data transmission channel to the wireless terminal 306 is f2, a frequency of an air interface 341 of the first macro base station is f1, and f1 and f2 have equal or unequal frequency values; meanwhile, the indoor antenna port module 213 up-converts an air interface signal from the second macro base station through the third wireless node 200c and transmits the up-converted signal to the first wireless node 200a through a third backhaul path (the third backhaul path is from the first wireless node 200a to the third wireless node 200c to the second macro base station antenna 330), the first wireless node 200a uses the third antenna port module 213 to send the up-converted signal to the wireless terminal 305, the frequency of the air interface 332 sending the up-converted signal to the wireless terminal 305 is f3, and the frequency of the air interface 331 of the second macro base station is f 3;

further, when the frequency of the air interface 342 providing a traffic data transmission channel to the wireless terminal 306 is f2, the frequency of the air interface 332 transmitting signals to the wireless terminal 305 is f3, and f2 and f3 are adjacent frequencies, introducing the air interface signal 331 from the second macro base station antenna port 330 using the third antenna port module 213 of the third wireless node and properly amplifying it as the air interface 332 transmitting to the wireless terminal 305 improves the signal strength of the air interface signal 331 indoors, thereby improving the ability of the wireless terminal 305 to combat out-of-band leakage interference of the air interface 342 (frequency f2) when receiving the air interface 332 at f 3.

In the method and apparatus for establishing a backhaul channel provided in the foregoing embodiments, a backhaul control channel is configured on one or more antenna ports of a wireless node, backhaul control information is sent or received on the backhaul control channel, and a backhaul channel is established according to the backhaul control information. The invention can reduce the time delay of the return path, improve the reconfiguration capability of the return path topological structure and keep the real-time alignment of the return beam.

It will be understood by those skilled in the art that all or part of the steps of the above methods may be implemented by instructing the relevant hardware through a program, and the program may be stored in a computer readable storage medium, such as a read-only memory, a magnetic or optical disk, and the like. Alternatively, all or part of the steps of the foregoing embodiments may also be implemented by using one or more integrated circuits, and accordingly, each module/unit in the foregoing embodiments may be implemented in the form of hardware, and may also be implemented in the form of a software functional module. The present invention is not limited to any specific form of combination of hardware and software.

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

Claims

1. A method for establishing a backhaul channel comprises the following steps:

establishing a return channel according to the return path control information;

2. The method of claim 1, wherein:

the establishing a backhaul channel according to the backhaul path control information further includes:

3. The method of claim 1, wherein:

when a backhaul is established between two antenna ports of the wireless node and antenna ports of two adjacent wireless nodes of the wireless node, the establishing a backhaul according to the backhaul control information further includes:

and establishing a radio frequency direct-release return path or a radio frequency variable-frequency amplification return path between two first-class antenna ports of the wireless node.

4. The method of claim 3, wherein:

establishing a radio frequency direct playback path between two first-class antenna ports of the wireless node, comprising:

5. The method of claim 3, wherein:

establishing a radio frequency conversion amplification return channel between two first-class antenna ports of the wireless node, wherein the radio frequency conversion amplification return channel comprises the following steps:

6. A method according to claim 1 or 3, characterized by:

establishing a radio frequency direct playback ranging channel between a first type of antenna port of the wireless node and a second type of antenna port of the wireless node, comprising:

7. A method according to claim 1 or 3, characterized by:

establishing a radio frequency variable frequency amplification backhaul channel between a first type antenna port of the wireless node and a second type antenna port of the wireless node, comprising:

8. The method of claim 1, wherein:

configuring a backhaul control channel on one or more antenna ports of a wireless node, comprising:

9. The method of claim 1, wherein:

transmitting or receiving backhaul path control information on the backhaul path control channel, including:

10. The method of claim 2, wherein:

establishing a backhaul channel between an antenna port of the wireless node and an antenna port of a neighboring wireless node of the wireless node, comprising:

11. The method of claim 10, wherein:

establishing a backhaul channel between an antenna port of the wireless node and an antenna port of a neighboring wireless node of the wireless node, further comprising:

12. The method of claim 2, wherein:

after establishing a backhaul channel between a first antenna port of the wireless node and a second antenna port of an adjacent wireless node of the wireless node according to the backhaul path control information, the method further comprises:

Returning to the step b).

13. The method of claim 2, wherein:

Returning to the step b).

14. The method of claim 2, wherein:

the wireless node comprises: a backhaul transmission relay node, a macro base station node, a micro base station node, or a wireless-to-wired transition node.

15. The method of claim 14, wherein:

said establishing a backhaul channel between at least one antenna port of said wireless node and an antenna port of at least one neighboring wireless node of said wireless node, comprising:

16. The method of any one of claims 1-5, wherein:

the backhaul path control information includes at least one of the following information:

17. An apparatus for establishing a backhaul channel, comprising:

a backhaul channel establishing module, configured to establish a backhaul channel according to the backhaul path control information, including:

18. The apparatus of claim 17, wherein:

a backhaul channel establishing module, configured to establish a backhaul channel according to the backhaul path control information, further including:

19. The apparatus of claim 17, wherein:

a backhaul establishment module, configured to establish a backhaul between two antenna ports of the wireless node and two antenna ports of two neighboring wireless nodes of the wireless node, where the backhaul is established according to the backhaul control information, and the backhaul establishment module further includes:

20. The apparatus of claim 19, wherein:

a backhaul channel establishing module, configured to establish a radio frequency direct-amplifying backhaul channel between two first-type antenna ports of the wireless node, including:

21. The apparatus of claim 19, wherein:

a backhaul channel establishing module, configured to establish a radio frequency variable frequency amplification backhaul channel between two first antenna ports of the wireless node, including:

22. The apparatus of claim 17 or 19, wherein:

a backhaul channel establishing module, configured to establish a radio frequency direct-amplifying backhaul channel between a first antenna port of the wireless node and a second antenna port of the wireless node, including:

23. The apparatus of claim 17 or 19, wherein:

a backhaul channel establishing module, configured to establish a radio frequency variable frequency amplification backhaul channel between a first antenna port of the wireless node and a second antenna port of the wireless node, including:

24. The apparatus of claim 17, wherein:

a backhaul path control channel configuration module for configuring a backhaul path control channel on one or more antenna ports of a wireless node, comprising:

25. The apparatus of claim 17, wherein:

a backhaul path control information transmission module, configured to send or receive backhaul path control information on the backhaul path control channel, including:

26. The apparatus of claim 18, wherein:

a backhaul channel establishing module configured to establish a backhaul channel between an antenna port of the wireless node and an antenna port of an adjacent wireless node of the wireless node, comprising:

27. The apparatus of claim 26, wherein:

a backhaul channel establishing module, configured to establish a backhaul channel between an antenna port of the wireless node and an antenna port of an adjacent wireless node of the wireless node, further comprising:

28. The apparatus of claim 18, further comprising:

Returning to the step b).

29. The apparatus of claim 18, further comprising:

a beam alignment module to perform the following after establishing a backhaul channel between a first antenna port of the wireless node and a second antenna port of a neighboring wireless node of the wireless node according to the backhaul path control information:

Returning to the step b).

30. The apparatus of claim 18, wherein:

the wireless node comprises: backhaul transmission relay nodes, macro base station nodes, micro base station nodes, or wireless-to-wired transition nodes.

31. The apparatus of claim 30, wherein:

a backhaul establishment module for establishing a backhaul between at least one antenna port of the wireless node and an antenna port of at least one neighboring wireless node of the wireless node, comprising:

32. The apparatus of any one of claims 17-21, wherein: