WO2017157140A1 - Backhaul transmission method and device - Google Patents

Abstract

Disclosed are a backhaul transmission method and device. The backhaul transmission method comprises: configuring a backhaul path main-control channel on an antenna port contained in a first-type antenna port group of a wireless node; configuring a backhaul path auxiliary-control channel on at least one antenna port contained in a first-type antenna port group of a wireless node; configuring a backhaul service transmission channel between two first-type antenna port groups and/or between a first-type antenna port group and a second-type antenna port group of a wireless node.

Description

Backhaul transmission method and device Technical field

This document relates to, but is not limited to, the field of radio communication technologies, and in particular, to a backhaul transmission method and apparatus.

Background technique

At present, microwave fixed access technology has been maturely applied to the backhaul transmission of base stations. In the subsequent development of cellular mobile communication networks and wireless access networks, high-density deployment of base stations has the following new requirements for wireless backhaul: 1) wireless backhaul channels Need to adapt to the large bandwidth fluctuations of data services, such as up to tens of times the bandwidth fluctuations; 2) wireless backhaul channels need to have the ability to efficiently use the spectrum and avoid interference, such as using the spectrum in a flexible space division; 3) wireless backhaul channels It is necessary to overcome the adverse effects of NLOS (Not-Line-of-Sight) channels, such as flexible avoidance of NLOS paths; 4) Wireless backhaul channels need to have high reliability and robustness, such as in a small number of relays. The transmission capability of the backhaul channel is not affected or maintains the basic transmission capability in the event of a node failure.

Among them, the medium-term (2015-2020) requirements for wireless backhaul include: 1) the capacity of macro base stations in urban dense environments is 1G or several Gbit/s, and the distance from optical fibers to 200 meters to 1km; 2) urban dense environment The capacity of the micro base station is tens to hundreds of megabits, the distance from the micro base station to the optical fiber is less than 200 meters to 1km; 3) the capacity of the suburban macro station is several megabytes to several hundred megabytes, and the distance from the optical fiber to several kilometers to 15 kilometers Kilometers; 4) Front-Haul (forward return) capacity is 1-10 Gbit/s per sector and requires low latency. The long-term (2020-2030) demand for wireless backhaul (5G expected indicators) includes: 1) user plane delay in the 1ms range; 2) million connections per square kilometer; 3) peak rate tens of Gbit/s; The user's basic data transmission rate is 1 Gbit/s; 5) The transmission capacity per square kilometer is Tbytes/s. The evolution indicators of LTE-A (Evolution of LTE) include: 1) a delay of 5-10 times reduction; 2) a 10-100 times increase in the number of simultaneous connections per square kilometer; 3) a peak rate increase of 10-50 times; 4) The user data rate is increased by 10-100 times; 5) the transmission capacity per square kilometer is increased by 100 to 1000 times; among them, the UDN (Ultra Dense Network) wireless backhaul requirements include: transmission capacity of 1 Gbit/s to tens Gbit/s; NLOS wireless backhaul requirements include: NLOS propagation is limited to 6G or less; (Line-of-Sight, line of sight) can be used up to 10G.

The wireless backhaul technology in the existing land mobile communication network limits the use efficiency of the spectrum and the backhaul network resources because the peak traffic that can be supported is limited by the bandwidth of a single wireless or wired backhaul channel, and the ability to use the backhaul channel resources of the non-hotspot area is poor. The flexibility of the backhaul path configuration is limited, which limits the flexibility of the backhaul path topology and the overall performance of the backhaul network.

Existing wireless backhaul technologies include AD-HOC (no infrastructure network/temporary network construction) technology, MESH (wireless mesh network) technology, and these technologies are still under development, and their existing transmission solutions cannot meet the future wireless Backhaul transmission capability requirements. Faced with the demand goal of wireless backhaul technology, the shortcomings of the wireless backhaul technology in the existing land mobile communication network are: less available backhaul path, small dynamic range of backhaul traffic, low efficiency of backhaul nodes and their spectrum resources, and reconfigurability of backhaul path topology Poor, the backhaul node data forwarding delay is large.

Summary of invention

The following is an overview of the topics detailed in this document. This Summary is not intended to limit the scope of the claims.

This paper provides a backhaul transmission method and device, which can increase the number of backhaul paths, expand the dynamic range of backhaul traffic, improve the backhaul path topology reorganization capability, and the spectrum resource usage efficiency of the backhaul nodes.

The embodiment of the invention provides a backhaul transmission method, including:

Configuring a backhaul path main control channel on an antenna port included in the first type of antenna port group of the wireless node;

Configuring a backhaul path secondary control channel on at least one antenna port included in the first type of antenna port group of the wireless node;

A backhaul traffic transmission channel is configured between two sets of first type antenna port groups of the wireless node and/or between the first type of antenna port group and the second type of antenna port group.

Optionally, the backhaul path main control channel is used for establishing and maintaining a primary backhaul path between the wireless node and its single-hop adjacent wireless node;

The backhaul path auxiliary control channel is used to newly establish or delete a backhaul path other than the main backhaul path between the wireless node and its single-hop adjacent wireless node;

At least one of the backhaul path primary control channel and the backhaul path secondary control channel transmits at least one of the following information:

Backhaul path control information, backhaul channel bandwidth, backhaul channel frequency, backhaul channel access guidance, backhaul channel reconfiguration information, backhaul channel beam alignment control information, and interference detection information of the wireless node on the candidate backhaul frequency band.

Optionally, configuring a backhaul path main control channel on one antenna port included in the first type of antenna port group of the wireless node, including:

Configuring an in-band backhaul path primary control channel in the same frequency band as the backhaul traffic transmission channel operating band; and/or,

The outband backhaul path main control channel is configured in a frequency band different from the backhaul service transmission channel operating band.

Optionally, configuring a backhaul path auxiliary control channel on the at least one antenna port included in the first type of antenna port group of the wireless node, including:

Obtaining time-frequency resource location information of the backhaul path auxiliary control channel transmitted through the backhaul path main control channel;

Configuring the backhaul path auxiliary control channel by using time-frequency resource location information of the backhaul path auxiliary control channel;

The backhaul path secondary control channel includes: an inband backhaul path secondary control channel in the same frequency band as the backhaul service transmission channel and/or an outband backhaul path secondary control channel in a different frequency band from the backhaul service transmission channel.

Optionally, configuring a backhaul service transmission channel between the two sets of the first type of antenna port groups of the wireless node, including:

Configuring one-to-one, one-to-many, many-to-one or many-to-many between two sets of first-class antenna port groups of the wireless node according to backhaul path control information acquired from the backhaul path main control channel or the secondary control channel The backhaul service transmission channel includes configuration in any of the following a)-d):

a) configuring a radio frequency transmission distribution network between the two sets of first type antenna port groups of the wireless node, the shot The frequency transmission distribution network transmits signals from one antenna port receiving channel of one group of first type antenna port groups to one or more antennas of another group of first type antenna port groups by radio frequency direct amplification and/or radio frequency frequency conversion Port transmission channel;

b) configuring a radio frequency transmission distribution network between the two sets of first type antenna port groups of the wireless node, the radio frequency transmission distribution network transmitting multiple antennas from a group of first type antenna port groups by radio frequency direct amplification and/or radio frequency conversion The signal of the port receiving channel is sent to one or more antenna port transmitting channels of another group of antenna port groups of the first type;

c) configuring a radio frequency transmission network and a baseband processing unit between the two sets of first type antenna port groups of the wireless node, the baseband processing unit demodulating signals from one antenna port receiving channel of a group of first type antenna port groups After modulation, sent to one or more antenna port transmission channels in another group of antenna port groups of the first type;

d) configuring a radio frequency transmission network and a baseband processing unit between the two sets of first type antenna port groups of the wireless node, the baseband processing unit demodulating signals of the plurality of antenna port receiving channels from a group of first type antenna port groups And modulated to one or more antenna port transmit channels in another set of first type antenna port groups.

Optionally, configuring a backhaul service transmission channel between the first type of antenna port group and the second type of antenna port group of the wireless node, including:

The one-to-one, one-to-many, many-to-one or more between the first type of antenna port group and the second type of antenna port group of the wireless node according to the backhaul path control information acquired from the backhaul path main control channel or the secondary control channel Configure the backhaul service transport channel in a multi-mode manner, including using any of the following methods a)-d):

a) Configuring a radio frequency transmission distribution network between the first type of antenna port group and the second type of antenna port group of the wireless node, the radio frequency transmission distribution network will be from the first type of antenna port group by radio frequency direct amplification and/or radio frequency conversion One antenna port receiving channel signal is sent to one or more antenna port transmitting channels of the second type antenna port group;

b) configuring a radio frequency transmission distribution network between the first type of antenna port group and the second type of antenna port group of the wireless node, the radio frequency transmission distribution network adopting radio frequency direct amplification and/or radio frequency frequency conversion to bring the antenna port group from the first type Signals of multiple antenna port receiving channels are sent to the second type of antenna port group One or more antenna port transmit channels;

c) configuring a radio frequency transmission network and a baseband processing unit between the first type of antenna port group and the second type of antenna port group of the wireless node, the baseband processing unit receiving signals of the channel from one antenna port of the first type of antenna port group Demodulating and modulating and transmitting to one or more antenna port transmission channels in the second type of antenna port group;

d) configuring a radio frequency transmission network and a baseband processing unit between the first type of antenna port group and the second type of antenna port group of the wireless node, the baseband processing unit receiving channels for the plurality of antenna ports from the first type of antenna port group The signal is demodulated and modulated and sent to one or more antenna port transmit channels in the second type of antenna port group.

Optionally, the method further includes:

The establishment and maintenance of the main backhaul path between the wireless node and its single-hop adjacent wireless node by using the backhaul path main control channel includes performing the following processing:

The first wireless node and the second wireless node acquire time-frequency resource information of the first backhaul service transmission channel included in the primary backhaul path between the first wireless node and the second wireless node from the backhaul path management unit by using the backhaul path main control channel And wireless node connection relationship information;

The first wireless node and the second wireless node determine an antenna port pair according to the acquired wireless node connection relationship on the time-frequency resource corresponding to the first backhaul service transmission channel, and establish the first antenna pair by using the determined antenna port pair. Backhaul service transmission channel;

After the first backhaul service transmission channel is established, the first wireless node sends an access request or an access guide signal for establishing the first backhaul service transmission channel to the second wireless node by using a backhaul path main control channel; Or the second wireless node sends an access request or an access guide signal for establishing the first backhaul service transmission channel to the first wireless node by using a backhaul path main control channel;

The first wireless node or the second wireless node sends first backhaul service transmission channel establishment completion indication information to the backhaul path management unit through a backhaul path main control channel.

Optionally, the method further includes:

The backhaul path auxiliary control channel is used to newly establish a backhaul path other than the main backhaul path between the wireless node and its single-hop adjacent wireless node, including performing the following processing:

The first wireless node and the second wireless node corresponding to the newly established backhaul path acquire the time-frequency resource used by the newly added backhaul service transmission channel and/or the backhaul path auxiliary control channel corresponding to the newly established backhaul service transmission channel through the backhaul path main control channel. Information and connection information between wireless nodes;

And establishing, by the first wireless node and the second wireless node, the newly established backhaul service transmission channel and/or the backhaul path auxiliary control corresponding to the newly established backhaul service transmission channel according to the time-frequency resource information and the wireless node connection relationship information. channel.

Optionally, the method further includes:

Deleting a backhaul path other than the main backhaul path between the wireless node and its one-hop adjacent wireless node by using the backhaul path auxiliary control channel includes performing the following processing:

The first wireless node and the second wireless node corresponding to the backhaul path to be deleted acquire the indication information for deleting the specified backhaul path by using the backhaul path main control channel, where the indication information includes the path number information to be deleted and/or the path to be deleted. Antenna port information;

And releasing, by the first wireless node and the second wireless node, the time-frequency occupied by the backhaul service transmission channel of the backhaul path to be deleted and/or the backhaul path auxiliary control channel corresponding to the backhaul service transmission channel to be deleted according to the indication information Resources.

Optionally, the method further includes:

The initial wireless node and the destination wireless node of the backhaul path acquire configuration information of the measurement time-frequency window configured by the backhaul path management unit on the candidate backhaul transmission frequency band through the primary backhaul path;

The initiating wireless node and the destination wireless node of the backhaul path measure the amplitude or power of the radio frequency signal or the radio frequency interference in the measured time-frequency window, and report to the backhaul path management unit through the main backhaul path in the measurement time-frequency window. Measurement data or measurement results.

Optionally, after the backhaul service transmission channel is established between the first antenna port of the wireless node and the second antenna port of the neighboring wireless node, the method further includes:

a) the wireless node points the transmit beam of the first antenna port to adjust an angle adjustment amount θ;

b) the wireless node transmitting a specific direction finding signal to a second antenna port of the neighboring wireless node using a backhaul path control channel or a backhaul traffic transmission channel;

c) the second antenna port of the neighboring wireless node receives the specific amplitude direction finding signal and measures the connection Receiving the amplitude of the signal, and feeding back the measured amplitude value of the received signal to the wireless node;

d) the wireless node determines whether the amplitude value of the received signal fed back by the neighboring wireless node reaches a maximum value, and ends the adjustment of the direction of the transmit beam; otherwise, the transmit beam is directed to adjust a new angle adjustment

, return to step b).

Optionally, after the backhaul service transmission channel is established between the first antenna port of the wireless node and the second antenna port of the neighboring wireless node, the method further includes:

a) the wireless node points the receiving beam of the first antenna port to adjust an angle adjustment amount θ;

b) the wireless node receives a specific amplitude-finding signal sent by the second antenna port of the adjacent wireless node by using a backhaul path control channel or a backhaul service transmission channel on the first antenna port, and measuring the amplitude of the received signal;

c) the wireless node determines whether the amplitude value of the received signal reaches a maximum value, and ends the adjustment of the direction of the receive beam; otherwise, the receive beam is directed to adjust a new angle adjustment

, return to step b).

The embodiment of the invention further provides a backhaul transmission device, including:

a backhaul path main control channel configuration module, configured to configure a backhaul path main control channel on an antenna port included in the first type of antenna port group of the wireless node;

a backhaul path auxiliary control channel configuration module, configured to configure a backhaul path auxiliary control channel on at least one antenna port included in the first type of antenna port group of the wireless node;

The backhaul service transport channel configuration module is configured to configure a backhaul service transport channel between the two sets of first type antenna port groups of the wireless node and/or between the first type of antenna port group and the second type of antenna port group.

Optionally, the backhaul path main control channel is used for establishing and maintaining a primary backhaul path between the wireless node and its single-hop adjacent wireless node;

The backhaul path auxiliary control channel is used to newly establish or delete a backhaul path other than the main backhaul path between the wireless node and its single-hop adjacent wireless node;

At least one of the backhaul path primary control channel and the backhaul path secondary control channel transmits the following information At least one of the information:

Backhaul path control information, backhaul channel bandwidth, backhaul channel frequency, backhaul channel access guidance, backhaul channel reconfiguration information, backhaul channel beam alignment control information, and interference detection information of the wireless node on the candidate backhaul frequency band.

Optionally, the backhaul path main control channel configuration module is configured to configure the backhaul path main control channel on one antenna port included in the first type of antenna port group of the wireless node in the following manner:

Configuring an in-band backhaul path primary control channel in the same frequency band as the backhaul traffic transmission channel operating band; and/or,

The outband backhaul path main control channel is configured in a frequency band different from the backhaul service transmission channel operating band.

Optionally, the backhaul path auxiliary control channel configuration module is configured to configure the backhaul path auxiliary control channel on the at least one antenna port included in the first type of antenna port group of the wireless node in the following manner:

Obtaining time-frequency resource location information of the backhaul path auxiliary control channel transmitted through the backhaul path main control channel;

Configuring the backhaul path auxiliary control channel by using time-frequency resource location information of the backhaul path auxiliary control channel;

The backhaul path secondary control channel includes: an inband backhaul path secondary control channel in the same frequency band as the backhaul service transmission channel and/or an outband backhaul path secondary control channel in a different frequency band from the backhaul service transmission channel.

Optionally, the backhaul service transport channel configuration module is configured to configure a backhaul service transport channel between the two sets of first type antenna port groups of the wireless node in the following manner:

Configuring one-to-one, one-to-many, many-to-one or many-to-many between two sets of first-class antenna port groups of the wireless node according to backhaul path control information acquired from the backhaul path main control channel or the secondary control channel The backhaul service transmission channel includes configuration in any of the following a)-d):

a) configuring a radio frequency transmission distribution network between the two sets of first type antenna port groups of the wireless node, the radio frequency transmission distribution network transmitting one antenna port from a group of first type antenna port groups by radio frequency direct amplification and/or radio frequency conversion The signal of the receiving channel is sent to one of the other group of antenna ports of the first type One or more antenna port transmit channels;

b) configuring a radio frequency transmission distribution network between the two sets of first type antenna port groups of the wireless node, the radio frequency transmission distribution network transmitting multiple antennas from a group of first type antenna port groups by radio frequency direct amplification and/or radio frequency conversion The signal of the port receiving channel is sent to one or more antenna port transmitting channels of another group of antenna port groups of the first type;

c) configuring a radio frequency transmission network and a baseband processing unit between the two sets of first type antenna port groups of the wireless node, the baseband processing unit demodulating signals from one antenna port receiving channel of a group of first type antenna port groups After modulation, sent to one or more antenna port transmission channels in another group of antenna port groups of the first type;

d) configuring a radio frequency transmission network and a baseband processing unit between the two sets of first type antenna port groups of the wireless node, the baseband processing unit demodulating signals of the plurality of antenna port receiving channels from a group of first type antenna port groups And modulated to one or more antenna port transmit channels in another set of first type antenna port groups.

Optionally, the backhaul service transmission channel configuration module is configured to configure a backhaul service transmission channel between the first type of antenna port group and the second type of antenna port group of the wireless node in the following manner:

The one-to-one, one-to-many, many-to-one or more between the first type of antenna port group and the second type of antenna port group of the wireless node according to the backhaul path control information acquired from the backhaul path main control channel or the secondary control channel Configure the backhaul service transport channel in a multi-mode manner, including using any of the following methods a)-d):

a) Configuring a radio frequency transmission distribution network between the first type of antenna port group and the second type of antenna port group of the wireless node, the radio frequency transmission distribution network will be from the first type of antenna port group by radio frequency direct amplification and/or radio frequency conversion One antenna port receiving channel signal is sent to one or more antenna port transmitting channels of the second type antenna port group;

b) configuring a radio frequency transmission distribution network between the first type of antenna port group and the second type of antenna port group of the wireless node, the radio frequency transmission distribution network adopting radio frequency direct amplification and/or radio frequency frequency conversion to bring the antenna port group from the first type The signals of the plurality of antenna port receiving channels are sent to one or more antenna port transmitting channels of the second type of antenna port group;

c) Configuring radio frequency transmission between the first type of antenna port group and the second type of antenna port group of the wireless node a transmission network and baseband processing unit that demodulates and modulates signals from one antenna port receiving channel of the first type of antenna port group and transmits them to one or more antenna port transmissions of the second type of antenna port group aisle;

d) configuring a radio frequency transmission network and a baseband processing unit between the first type of antenna port group and the second type of antenna port group of the wireless node, the baseband processing unit receiving channels for the plurality of antenna ports from the first type of antenna port group The signal is demodulated and modulated and sent to one or more antenna port transmit channels in the second type of antenna port group.

Optionally, the device further includes:

The primary backhaul path setup and hold module is configured to use the backhaul path primary control channel to establish and maintain a primary backhaul path between the wireless node and its single-hop adjacent wireless node, including performing the following processing:

The first wireless node and the second wireless node acquire time-frequency resource information of the first backhaul service transmission channel included in the primary backhaul path between the first wireless node and the second wireless node from the backhaul path management unit by using the backhaul path main control channel And wireless node connection relationship information;

The first wireless node and the second wireless node determine an antenna port pair according to the acquired wireless node connection relationship on the time-frequency resource corresponding to the first backhaul service transmission channel, and establish the first antenna pair by using the determined antenna port pair. Backhaul service transmission channel;

After the first backhaul service transmission channel is established, the first wireless node sends an access request or an access guide signal for establishing the first backhaul service transmission channel to the second wireless node by using a backhaul path main control channel; Or the second wireless node sends an access request or an access guide signal for establishing the first backhaul service transmission channel to the first wireless node by using a backhaul path main control channel;

The first wireless node or the second wireless node sends first backhaul service transmission channel establishment completion indication information to the backhaul path management unit through a backhaul path main control channel.

Optionally, the device further includes:

The establishment module of the other backhaul path is configured to use the backhaul path auxiliary control channel to newly establish a backhaul path other than the main backhaul path between the wireless node and its single-hop adjacent wireless node, including performing the following processing:

The first wireless node and the second wireless node corresponding to the newly established backhaul path acquire the time-frequency resource used by the newly added backhaul service transmission channel and/or the backhaul path auxiliary control channel corresponding to the newly established backhaul service transmission channel through the backhaul path main control channel. Information and connection information between wireless nodes;

And establishing, by the first wireless node and the second wireless node, the newly established backhaul service transmission channel and/or the backhaul path auxiliary control corresponding to the newly established backhaul service transmission channel according to the time-frequency resource information and the wireless node connection relationship information. channel.

Optionally, the device further includes:

The deletion module of the other backhaul path is configured to use the backhaul path auxiliary control channel to delete the backhaul path except the main backhaul path between the wireless node and its single-hop adjacent wireless node, including performing the following processing:

The first wireless node and the second wireless node corresponding to the backhaul path to be deleted acquire the indication information for deleting the specified backhaul path by using the backhaul path main control channel, where the indication information includes the path number information to be deleted and/or the path to be deleted. Antenna port information;

And releasing, by the first wireless node and the second wireless node, the time-frequency occupied by the backhaul service transmission channel of the backhaul path to be deleted and/or the backhaul path auxiliary control channel corresponding to the backhaul service transmission channel to be deleted according to the indication information Resources.

Optionally, the device further includes:

The radio frequency measurement module, the initiating wireless node and the destination wireless node configured as the backhaul path acquire configuration information of the measurement time-frequency window configured by the backhaul path management unit on the candidate backhaul transmission frequency band by using the main backhaul path;

The initiating wireless node and the destination wireless node of the backhaul path measure the amplitude or power of the radio frequency signal or the radio frequency interference in the measured time-frequency window, and report to the backhaul path management unit through the main backhaul path in the measurement time-frequency window. Measurement data or measurement results.

Optionally, the device further includes:

The beam alignment module is configured to perform the following processing after the backhaul service transmission channel is established between the first antenna port of the wireless node and the second antenna port of the adjacent wireless node:

a) the wireless node points the transmit beam of the first antenna port to adjust an angle adjustment amount θ;

b) the wireless node transmitting a specific direction finding signal to a second antenna port of the neighboring wireless node using a backhaul path control channel or a backhaul traffic transmission channel;

c) the second antenna port of the adjacent wireless node receives the specific amplitude direction finding signal and 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 determines whether the amplitude value of the received signal fed back by the neighboring wireless node reaches a maximum value, and ends the adjustment of the direction of the transmit beam; otherwise, the transmit beam is directed to adjust a new angle adjustment

, return to step b).

Optionally, the device further includes:

The beam alignment module is configured to perform the following processing after the backhaul service transmission channel is established between the first antenna port of the wireless node and the second antenna port of the adjacent wireless node:

a) the wireless node points the receiving beam of the first antenna port to adjust an angle adjustment amount θ;

b) the wireless node receives a specific amplitude-finding signal sent by the second antenna port of the adjacent wireless node by using a backhaul path control channel or a backhaul service transmission channel on the first antenna port, and measuring the amplitude of the received signal;

c) the wireless node determines whether the amplitude value of the received signal reaches a maximum value, and ends the adjustment of the direction of the receive beam; otherwise, the receive beam is directed to adjust a new angle adjustment

, return to step b).

The embodiment of the invention further provides a computer readable storage medium storing computer executable instructions, which are implemented when executed by a processor.

Compared with the related art, a backhaul transmission method and apparatus provided by an embodiment of the present invention configures a backhaul path main control channel on an antenna port included in a first type of antenna port group of a wireless node, and is in a first class of a wireless node. Configuring a backhaul path secondary control channel on at least one antenna port included in the antenna port group, configuring between two sets of first type antenna port groups of the wireless node and/or between the first type of antenna port group and the second type of antenna port group Backhaul service transmission channel. The embodiment of the invention can increase the number of backhaul paths, expand the dynamic range of the backhaul traffic, improve the backhaul path topology reorganization capability, and the spectrum resource usage efficiency of the backhaul node.

Other aspects will be apparent upon reading and understanding the drawings and detailed description.

BRIEF abstract

FIG. 1 is a flowchart of a backhaul transmission method according to an embodiment of the present invention.

FIG. 2 is a schematic diagram of a backhaul transmission apparatus according to an embodiment of the present invention.

Detailed

The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that, in the case of no conflict, the features in the embodiments and the embodiments in the present application may be arbitrarily combined with each other.

The data that the future wireless backhaul needs to bear has the following characteristics: 1) large transmission bandwidth; 2) large data traffic fluctuation, the fluctuation range can reach an order of magnitude. Therefore, it is necessary to consider a wireless backhaul structure that can share spectrum and share transmission channels.

Embodiment 1, an example of a multiple input multiple output backhaul transmission method

As shown in FIG. 1 , an embodiment of the present invention provides a backhaul transmission method, including the following steps:

Step S110, configuring a backhaul path main control channel on one antenna port included in the first type of antenna port group of the wireless node;

Step S120, configuring a backhaul path auxiliary control channel on at least one antenna port included in the first type of antenna port group of the wireless node;

Step S130, configuring a backhaul service transmission channel between two sets of first type antenna port groups of the wireless node and/or between the first type antenna port group and the second type antenna port group;

Wherein the first type of antenna port group is a radio antenna port group for backhaul transmission;

Wherein the second type of antenna port group is a radio antenna port group for radio terminal access;

Wherein the first type of antenna port group is one or more groups;

The first type of antenna port group includes at least two antenna ports;

The backhaul path main control channel is used for establishing and maintaining a primary backhaul path between the wireless node and its single-hop adjacent wireless node;

The backhaul path auxiliary control channel is used to newly establish or delete a backhaul path other than the main backhaul path between the wireless node and its single-hop adjacent wireless node;

The at least one of the backhaul path primary control channel and the backhaul path secondary control channel transmits at least one of the following information:

Backhaul path control information, backhaul channel bandwidth, backhaul channel frequency, backhaul channel access guidance, backhaul channel reconfiguration information, backhaul channel beam alignment control information, and interference detection information of the wireless node on the candidate backhaul band;

The backhaul path main control channel is configured on an antenna port included in the first type of antenna port group of the wireless node, including:

Configuring an in-band backhaul path primary control channel in the same frequency band as the backhaul traffic transmission channel operating band; and/or,

Configuring an outband backhaul path main control channel in a frequency band different from a working frequency band of the backhaul service transmission channel;

The backhaul path auxiliary control channel is configured on the at least one antenna port included in the first type of antenna port group of the wireless node, including:

Obtaining time-frequency resource location information of the backhaul path auxiliary control channel transmitted through the backhaul path main control channel;

Configuring the backhaul path auxiliary control channel by using time-frequency resource location information of the backhaul path auxiliary control channel;

The backhaul path secondary control channel includes: an inband backhaul path auxiliary control channel in the same frequency band as the backhaul service transmission channel and/or an outband backhaul path auxiliary control channel in a different frequency band from the backhaul service transmission channel;

The time-frequency resource location information includes at least one of a frequency location and a time window location used by the backhaul path secondary control channel; the frequency location includes a center of a frequency resource block used by the backhaul path secondary control channel The position of the frequency and/or the width of the frequency resource block.

Wherein, a backhaul service transmission channel is configured between two sets of first type antenna port groups of the wireless node, include:

Configuring one-to-one, one-to-many, many-to-one or many-to-many between two sets of first-class antenna port groups of the wireless node according to backhaul path control information acquired from the backhaul path main control channel or the secondary control channel The backhaul service transmission channel includes configuration in any of the following a)-d):

a) configuring a radio frequency transmission distribution network between the two sets of first type antenna port groups of the wireless node, the radio frequency transmission distribution network transmitting one antenna port from a group of first type antenna port groups by radio frequency direct amplification and/or radio frequency conversion The signal of the receiving channel is sent to one or more antenna port transmitting channels of another group of antenna port groups of the first type;

b) configuring a radio frequency transmission distribution network between the two sets of first type antenna port groups of the wireless node, the radio frequency transmission distribution network transmitting multiple antennas from a group of first type antenna port groups by radio frequency direct amplification and/or radio frequency conversion The signal of the port receiving channel is sent to one or more antenna port transmitting channels of another group of antenna port groups of the first type;

c) configuring a radio frequency transmission network and a baseband processing unit between the two sets of first type antenna port groups of the wireless node, the baseband processing unit demodulating signals from one antenna port receiving channel of a group of first type antenna port groups After modulation, sent to one or more antenna port transmission channels in another group of antenna port groups of the first type;

d) configuring a radio frequency transmission network and a baseband processing unit between the two sets of first type antenna port groups of the wireless node, the baseband processing unit demodulating signals of the plurality of antenna port receiving channels from a group of first type antenna port groups And modulating and transmitting to one or more antenna port transmission channels of another group of first type antenna port groups;

The backhaul service transmission channel is configured between the first type of antenna port group and the second type of antenna port group of the wireless node, including:

The one-to-one, one-to-many, many-to-one or more between the first type of antenna port group and the second type of antenna port group of the wireless node according to the backhaul path control information acquired from the backhaul path main control channel or the secondary control channel Configure the backhaul service transport channel in a multi-mode manner, including using any of the following methods a)-d):

a) configuring a radio frequency transmission distribution network between the first type of antenna port group and the second type of antenna port group of the wireless node, the radio frequency transmission distribution network will be derived from radio frequency direct amplification and/or radio frequency conversion Signals of one antenna port receiving channel of the first type of antenna port group are sent to one or more antenna port transmitting channels of the second type of antenna port group;

b) configuring a radio frequency transmission distribution network between the first type of antenna port group and the second type of antenna port group of the wireless node, the radio frequency transmission distribution network adopting radio frequency direct amplification and/or radio frequency frequency conversion to bring the antenna port group from the first type The signals of the plurality of antenna port receiving channels are sent to one or more antenna port transmitting channels of the second type of antenna port group;

c) configuring a radio frequency transmission network and a baseband processing unit between the first type of antenna port group and the second type of antenna port group of the wireless node, the baseband processing unit receiving signals of the channel from one antenna port of the first type of antenna port group Demodulating and modulating and transmitting to one or more antenna port transmission channels in the second type of antenna port group;

d) configuring a radio frequency transmission network and a baseband processing unit between the first type of antenna port group and the second type of antenna port group of the wireless node, the baseband processing unit receiving channels for the plurality of antenna ports from the first type of antenna port group The signal is demodulated and modulated and sent to one or more antenna port transmit channels in the second type of antenna port group;

The method further includes: using the backhaul path main control channel to establish and maintain a primary backhaul path between the wireless node and its single-hop adjacent wireless node, including performing the following processing:

The first wireless node and the second wireless node acquire time-frequency resource information of the first backhaul service transmission channel included in the primary backhaul path between the first wireless node and the second wireless node from the backhaul path management unit by using the backhaul path main control channel And wireless node connection relationship information;

The first wireless node and the second wireless node determine an antenna port pair according to the acquired wireless node connection relationship on the time-frequency resource corresponding to the first backhaul service transmission channel, and establish the first antenna pair by using the determined antenna port pair. Backhaul service transmission channel;

After the first backhaul service transmission channel is established, the first wireless node sends an access request or an access guide signal for establishing the first backhaul service transmission channel to the second wireless node by using a backhaul path main control channel; Or the second wireless node sends an access request or an access guide signal for establishing the first backhaul service transmission channel to the first wireless node by using a backhaul path main control channel;

Transmitting, by the first wireless node or the second wireless node, the The backhaul path management unit sends the first backhaul service transmission channel establishment completion indication information;

The backhaul path management unit is a network device or a network unit, and manages the number and bandwidth of the backhaul channels between the wireless nodes, similar to the base station management in the GSM (Global System for Mobile Communication) system. Device.

The method further includes:

The backhaul path auxiliary control channel is used to newly establish a backhaul path other than the main backhaul path between the wireless node and its single-hop adjacent wireless node, including performing the following processing:

The first wireless node and the second wireless node corresponding to the newly established backhaul path acquire the time-frequency resource used by the newly added backhaul service transmission channel and/or the backhaul path auxiliary control channel corresponding to the newly established backhaul service transmission channel through the backhaul path main control channel. Information and connection information between wireless nodes;

And establishing, by the first wireless node and the second wireless node, the newly established backhaul service transmission channel and/or the backhaul path auxiliary control corresponding to the newly established backhaul service transmission channel according to the time-frequency resource information and the wireless node connection relationship information. channel.

The method further includes:

Deleting a backhaul path other than the main backhaul path between the wireless node and its one-hop adjacent wireless node by using the backhaul path auxiliary control channel includes performing the following processing:

The first wireless node and the second wireless node corresponding to the backhaul path to be deleted acquire the indication information for deleting the specified backhaul path by using the backhaul path main control channel, where the indication information includes the path number information to be deleted and/or the path to be deleted. Antenna port information;

And releasing, by the first wireless node and the second wireless node, the time-frequency occupied by the backhaul service transmission channel of the backhaul path to be deleted and/or the backhaul path auxiliary control channel corresponding to the backhaul service transmission channel to be deleted according to the indication information Resources.

The method further includes:

The initial wireless node and the destination wireless node of the backhaul path acquire configuration information of the measurement time-frequency window configured by the backhaul path management unit on the candidate backhaul transmission frequency band through the primary backhaul path;

The starting wireless node and the destination wireless node of the backhaul path measure the amplitude or power of the radio frequency signal or the radio frequency interference in the measured time-frequency window, and go to the backhaul path management list through the main backhaul path The measurement data or measurement result in the time-frequency window is measured by the yuan;

The method further includes: after the backhaul service transmission channel is established between the first antenna port of the wireless node and the second antenna port of the neighboring wireless node, the method further includes:

a) the wireless node points the transmit beam of the first antenna port to adjust an angle adjustment amount θ;

b) the wireless node transmitting a specific direction finding signal to a second antenna port of the neighboring wireless node using a backhaul path control channel or a backhaul traffic transmission channel;

c) the second antenna port of the adjacent wireless node receives the specific amplitude direction finding signal and 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 determines whether the amplitude value of the received signal fed back by the neighboring wireless node reaches a maximum value, and ends the adjustment of the direction of the transmit beam; otherwise, the transmit beam is directed to adjust a new angle adjustment

, returning to step b);

Or the method further includes: after the backhaul service transmission channel is established between the first antenna port of the wireless node and the second antenna port of the neighboring wireless node, the method further includes:

a) the wireless node points the receiving beam of the first antenna port to adjust an angle adjustment amount θ;

b) the wireless node receives a specific amplitude-finding signal sent by the second antenna port of the adjacent wireless node by using a backhaul path control channel or a backhaul service transmission channel on the first antenna port, and measuring the amplitude of the received signal;

c) the wireless node determines whether the amplitude value of the received signal reaches a maximum value, and ends the adjustment of the direction of the receive beam; otherwise, the receive beam is directed to adjust a new angle adjustment

, return to step b).

Embodiment 2, an example of a multiple input multiple output backhaul transmission device

As shown in FIG. 2, an embodiment of the present invention provides a backhaul transmission apparatus, including:

The backhaul path main control channel configuration module 210 is configured to configure a backhaul path main control channel on one antenna port included in the first type of antenna port group of the wireless node;

The backhaul path auxiliary control channel configuration module 220 is configured to configure a backhaul path auxiliary control channel on at least one antenna port included in the first type of antenna port group of the wireless node;

The backhaul traffic transport channel configuration module 230 is configured to configure a backhaul traffic transport channel between the two sets of first type antenna port groups of the wireless node and/or between the first type of antenna port group and the second type of antenna port group.

The backhaul path main control channel is used for establishing and maintaining a primary backhaul path between the wireless node and its single-hop adjacent wireless node;

The backhaul path auxiliary control channel is used to newly establish or delete a backhaul path other than the main backhaul path between the wireless node and its single-hop adjacent wireless node;

At least one of the backhaul path primary control channel and the backhaul path secondary control channel transmits at least one of the following information:

Backhaul path control information, backhaul channel bandwidth, backhaul channel frequency, backhaul channel access guidance, backhaul channel reconfiguration information, backhaul channel beam alignment control information, and interference detection information of the wireless node on the candidate backhaul frequency band.

The backhaul path main control channel configuration module 210 is configured to configure a backhaul path main control channel on one antenna port included in the first type of antenna port group of the wireless node in the following manner:

Configuring an in-band backhaul path primary control channel in the same frequency band as the backhaul traffic transmission channel operating band; and/or,

The outband backhaul path main control channel is configured in a frequency band different from the backhaul service transmission channel operating band.

The backhaul path auxiliary control channel configuration module 220 is configured to configure a backhaul path auxiliary control channel on at least one antenna port included in the first type of antenna port group of the wireless node in the following manner:

Obtaining time-frequency resource location information of the backhaul path auxiliary control channel transmitted through the backhaul path main control channel;

Configuring the backhaul path auxiliary control channel by using time-frequency resource location information of the backhaul path auxiliary control channel;

The time-frequency resource location information includes at least one of a frequency location and a time window location used by the backhaul path secondary control channel; the frequency location includes a center of a frequency resource block used by the backhaul path secondary control channel The location of the frequency and/or the width of the frequency resource block;

The backhaul path secondary control channel includes: an inband backhaul path secondary control channel in the same frequency band as the backhaul service transmission channel and/or an outband backhaul path secondary control channel in a different frequency band from the backhaul service transmission channel.

The backhaul service transmission channel configuration module 230 is configured to configure a backhaul service transmission channel between the two sets of the first type of antenna port groups of the wireless node in the following manner:

Configuring one-to-one, one-to-many, many-to-one or many-to-many between two sets of first-class antenna port groups of the wireless node according to backhaul path control information acquired from the backhaul path main control channel or the secondary control channel The backhaul service transmission channel includes configuration in any of the following a)-d):

a) configuring a radio frequency transmission distribution network between the two sets of first type antenna port groups of the wireless node, the radio frequency transmission distribution network transmitting one antenna port from a group of first type antenna port groups by radio frequency direct amplification and/or radio frequency conversion The signal of the receiving channel is sent to one or more antenna port transmitting channels of another group of antenna port groups of the first type;

b) configuring a radio frequency transmission distribution network between the two sets of first type antenna port groups of the wireless node, the radio frequency transmission distribution network transmitting multiple antennas from a group of first type antenna port groups by radio frequency direct amplification and/or radio frequency conversion The signal of the port receiving channel is sent to one or more antenna port transmitting channels of another group of antenna port groups of the first type;

c) configuring a radio frequency transmission network and a baseband processing unit between the two sets of first type antenna port groups of the wireless node, the baseband processing unit demodulating signals from one antenna port receiving channel of a group of first type antenna port groups After modulation, sent to one or more antenna port transmission channels in another group of antenna port groups of the first type;

d) configuring a radio frequency transmission network and a baseband processing unit between the two sets of first type antenna port groups of the wireless node, the baseband processing unit demodulating signals of the plurality of antenna port receiving channels from a group of first type antenna port groups And modulated to one or more antenna port transmit channels in another set of first type antenna port groups.

The backhaul service transmission channel configuration module 230 is configured to adopt the following manner in the wireless section. A backhaul service transmission channel is configured between the first type of antenna port group of the point and the second type of antenna port group:

The one-to-one, one-to-many, many-to-one or more between the first type of antenna port group and the second type of antenna port group of the wireless node according to the backhaul path control information acquired from the backhaul path main control channel or the secondary control channel Configure the backhaul service transport channel in a multi-mode manner, including using any of the following methods a)-d):

a) Configuring a radio frequency transmission distribution network between the first type of antenna port group and the second type of antenna port group of the wireless node, the radio frequency transmission distribution network will be from the first type of antenna port group by radio frequency direct amplification and/or radio frequency conversion One antenna port receiving channel signal is sent to one or more antenna port transmitting channels of the second type antenna port group;

b) configuring a radio frequency transmission distribution network between the first type of antenna port group and the second type of antenna port group of the wireless node, the radio frequency transmission distribution network adopting radio frequency direct amplification and/or radio frequency frequency conversion to bring the antenna port group from the first type The signals of the plurality of antenna port receiving channels are sent to one or more antenna port transmitting channels of the second type of antenna port group;

c) configuring a radio frequency transmission network and a baseband processing unit between the first type of antenna port group and the second type of antenna port group of the wireless node, the baseband processing unit receiving signals of the channel from one antenna port of the first type of antenna port group Demodulating and modulating and transmitting to one or more antenna port transmission channels in the second type of antenna port group;

d) configuring a radio frequency transmission network and a baseband processing unit between the first type of antenna port group and the second type of antenna port group of the wireless node, the baseband processing unit receiving channels for the plurality of antenna ports from the first type of antenna port group The signal is demodulated and modulated and sent to one or more antenna port transmit channels in the second type of antenna port group.

Wherein, the device further comprises:

The primary backhaul path setup and hold module 240 is configured to use the backhaul path primary control channel to establish and maintain a primary backhaul path between the wireless node and its single-hop adjacent wireless node, including performing the following processing:

The first wireless node and the second wireless node acquire time-frequency resource information of the first backhaul service transmission channel included in the primary backhaul path between the first wireless node and the second wireless node from the backhaul path management unit by using the backhaul path main control channel And wireless node connection relationship information;

The first wireless node and the second wireless node determine an antenna port pair according to the acquired wireless node connection relationship on the time-frequency resource corresponding to the first backhaul service transmission channel, and establish the first antenna pair by using the determined antenna port pair. Backhaul service transmission channel;

After the first backhaul service transmission channel is established, the first wireless node sends an access request or an access guide signal for establishing the first backhaul service transmission channel to the second wireless node by using a backhaul path main control channel; Or the second wireless node sends an access request or an access guide signal for establishing the first backhaul service transmission channel to the first wireless node by using a backhaul path main control channel;

The first wireless node or the second wireless node sends first backhaul service transmission channel establishment completion indication information to the backhaul path management unit through a backhaul path main control channel.

Wherein, the device further comprises:

The other backhaul path establishing module 250 is configured to perform, by using the backhaul path auxiliary control channel, a new backhaul path other than the main backhaul path between the wireless node and its single-hop adjacent wireless node, including performing the following processing:

The first wireless node and the second wireless node corresponding to the newly established backhaul path acquire the time-frequency resource used by the newly added backhaul service transmission channel and/or the backhaul path auxiliary control channel corresponding to the newly established backhaul service transmission channel through the backhaul path main control channel. Information and connection information between wireless nodes;

And establishing, by the first wireless node and the second wireless node, the newly established backhaul service transmission channel and/or the backhaul path auxiliary control corresponding to the newly established backhaul service transmission channel according to the time-frequency resource information and the wireless node connection relationship information. channel.

Wherein, the device further comprises:

The deletion module 260 of the other backhaul path is configured to perform the deletion of the backhaul path except the main backhaul path between the wireless node and the one-hop adjacent wireless node by using the backhaul path auxiliary control channel, including performing the following processing:

The first wireless node and the second wireless node corresponding to the backhaul path to be deleted acquire the indication information for deleting the specified backhaul path by using the backhaul path main control channel, where the indication information includes the path number information to be deleted and/or the path to be deleted. Antenna port information;

The first wireless node and the second wireless node release the backhaul to be deleted according to the indication information The time-frequency resource occupied by the backhaul service transmission channel of the path and/or the backhaul path auxiliary control channel corresponding to the backhaul service transmission channel to be deleted.

Wherein, the device further comprises:

The radio frequency measurement module 270, the initiating wireless node and the destination wireless node configured as the backhaul path acquire configuration information of the measurement time-frequency window configured by the backhaul path management unit on the candidate backhaul transmission frequency band by using the main backhaul path;

The initiating wireless node and the destination wireless node of the backhaul path measure the amplitude or power of the radio frequency signal or the radio frequency interference in the measured time-frequency window, and report to the backhaul path management unit through the main backhaul path in the measurement time-frequency window. Measurement data or measurement results.

Wherein, the device further comprises:

The beam alignment module 280 is configured to perform the following processing after the backhaul service transmission channel has been established between the first antenna port of the wireless node and the second antenna port of the adjacent wireless node:

a) the wireless node points the transmit beam of the first antenna port to adjust an angle adjustment amount θ;

b) the wireless node transmitting a specific direction finding signal to a second antenna port of the neighboring wireless node using a backhaul path control channel or a backhaul traffic transmission channel;

c) the second antenna port of the adjacent wireless node receives the specific amplitude direction finding signal and 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 determines whether the amplitude value of the received signal fed back by the neighboring wireless node reaches a maximum value, and ends the adjustment of the direction of the transmit beam; otherwise, the transmit beam is directed to adjust a new angle adjustment

, return to step b).

Alternatively, the device further comprises:

The beam alignment module 280 is configured to perform the following processing after the backhaul service transmission channel has been established between the first antenna port of the wireless node and the second antenna port of the adjacent wireless node:

a) the wireless node points the receiving beam of the first antenna port to adjust an angle adjustment amount θ;

b) the wireless node uses a backhaul path control channel or backhaul service on the first antenna port The transmission channel receives a specific amplitude direction signal sent by the second antenna port of the neighboring wireless node, and measures the amplitude of the received signal;

c) the wireless node determines whether the amplitude value of the received signal reaches a maximum value, and ends the adjustment of the direction of the receive beam; otherwise, the receive beam is directed to adjust a new angle adjustment

, return to step b).

The backhaul transmission method and apparatus provided by the foregoing embodiment are configured to configure a backhaul path main control channel on one antenna port included in the first type antenna port group of the wireless node, and at least one included in the first type antenna port group of the wireless node. A backhaul path secondary control channel is configured on the antenna port, and a backhaul service transmission channel is configured between the two sets of the first type of antenna port groups of the wireless node and/or between the first type of antenna port group and the second type of antenna port group. The embodiment of the invention can increase the number of backhaul paths, expand the dynamic range of the backhaul traffic, improve the backhaul path topology reorganization capability, and the spectrum resource usage efficiency of the backhaul node.

Industrial applicability

According to the technical solution provided by the embodiment of the present invention, the backhaul path main control channel is configured on one antenna port included in the first type of antenna port group of the wireless node, and is configured on at least one antenna port included in the first type of antenna port group of the wireless node. The backhaul path secondary control channel configures a backhaul traffic transport channel between the two sets of first type antenna port groups of the wireless node and/or between the first type of antenna port group and the second type of antenna port group. The technical solution can increase the number of backhaul paths, expand the dynamic range of the backhaul traffic, improve the reconfiguration capability of the backhaul path, and use the spectrum resources of the backhaul nodes.

Claims (24)

1. A backhaul transmission method includes:

   Configuring a backhaul path main control channel on an antenna port included in the first type of antenna port group of the wireless node;

   Configuring a backhaul path secondary control channel on at least one antenna port included in the first type of antenna port group of the wireless node;

   A backhaul traffic transmission channel is configured between two sets of first type antenna port groups of the wireless node and/or between the first type of antenna port group and the second type of antenna port group.
2. The method of claim 1 wherein:

   The backhaul path main control channel is used for establishing and maintaining a primary backhaul path between the wireless node and its single-hop adjacent wireless node;

   The backhaul path auxiliary control channel is used to newly establish or delete a backhaul path other than the main backhaul path between the wireless node and its single-hop adjacent wireless node;

   At least one of the backhaul path primary control channel and the backhaul path secondary control channel transmits at least one of the following information:

   Backhaul path control information, backhaul channel bandwidth, backhaul channel frequency, backhaul channel access guidance, backhaul channel reconfiguration information, backhaul channel beam alignment control information, and interference detection information of the wireless node on the candidate backhaul frequency band.
3. The method of claim 1 wherein:

   Configuring a backhaul path main control channel on an antenna port included in the first type of antenna port group of the wireless node, including:

   Configuring an in-band backhaul path primary control channel in the same frequency band as the backhaul traffic transmission channel operating band; and/or,

   The outband backhaul path main control channel is configured in a frequency band different from the backhaul service transmission channel operating band.
4. The method of claim 1 wherein:

   Configuring a backhaul path secondary control channel on at least one antenna port included in the first type of antenna port group of the wireless node, including:

   Obtaining time-frequency resource location information of the backhaul path auxiliary control channel transmitted through the backhaul path main control channel;

   Configuring the backhaul path auxiliary control channel by using time-frequency resource location information of the backhaul path auxiliary control channel;

   The backhaul path secondary control channel includes: an inband backhaul path secondary control channel in the same frequency band as the backhaul service transmission channel and/or an outband backhaul path secondary control channel in a different frequency band from the backhaul service transmission channel.
5. The method of claim 1 wherein:

   Configuring a backhaul service transmission channel between two sets of first type antenna port groups of the wireless node, including:

   Configuring one-to-one, one-to-many, many-to-one or many-to-many between two sets of first-class antenna port groups of the wireless node according to backhaul path control information acquired from the backhaul path main control channel or the secondary control channel The backhaul service transmission channel includes configuration in any of the following a)-d):

   a) configuring a radio frequency transmission distribution network between the two sets of first type antenna port groups of the wireless node, the radio frequency transmission distribution network transmitting one antenna port from a group of first type antenna port groups by radio frequency direct amplification and/or radio frequency conversion The signal of the receiving channel is sent to one or more antenna port transmitting channels of another group of antenna port groups of the first type;

   b) configuring a radio frequency transmission distribution network between the two sets of first type antenna port groups of the wireless node, the radio frequency transmission distribution network transmitting multiple antennas from a group of first type antenna port groups by radio frequency direct amplification and/or radio frequency conversion The signal of the port receiving channel is sent to one or more antenna port transmitting channels of another group of antenna port groups of the first type;

   c) configuring a radio frequency transmission network and a baseband processing unit between the two sets of first type antenna port groups of the wireless node, the baseband processing unit demodulating signals from one antenna port receiving channel of a group of first type antenna port groups After modulation, sent to one or more antenna port transmission channels in another group of antenna port groups of the first type;

   d) configuring a radio frequency transmission network and a baseband processing unit between the two sets of first type antenna port groups of the wireless node, the baseband processing unit receiving the plurality of antenna ports from a group of the first type of antenna port groups The signals of the channel are demodulated and modulated and sent to one or more antenna port transmit channels of another set of antenna port groups of the first type.
6. The method of claim 1 wherein:

   Configuring a backhaul service transmission channel between the first type of antenna port group and the second type of antenna port group of the wireless node, including:

   The one-to-one, one-to-many, many-to-one or more between the first type of antenna port group and the second type of antenna port group of the wireless node according to the backhaul path control information acquired from the backhaul path main control channel or the secondary control channel Configure the backhaul service transport channel in a multi-mode manner, including using any of the following methods a)-d):

   a) Configuring a radio frequency transmission distribution network between the first type of antenna port group and the second type of antenna port group of the wireless node, the radio frequency transmission distribution network will be from the first type of antenna port group by radio frequency direct amplification and/or radio frequency conversion One antenna port receiving channel signal is sent to one or more antenna port transmitting channels of the second type antenna port group;

   b) configuring a radio frequency transmission distribution network between the first type of antenna port group and the second type of antenna port group of the wireless node, the radio frequency transmission distribution network adopting radio frequency direct amplification and/or radio frequency frequency conversion to bring the antenna port group from the first type The signals of the plurality of antenna port receiving channels are sent to one or more antenna port transmitting channels of the second type of antenna port group;

   c) configuring a radio frequency transmission network and a baseband processing unit between the first type of antenna port group and the second type of antenna port group of the wireless node, the baseband processing unit receiving signals of the channel from one antenna port of the first type of antenna port group Demodulating and modulating and transmitting to one or more antenna port transmission channels in the second type of antenna port group;

   d) configuring a radio frequency transmission network and a baseband processing unit between the first type of antenna port group and the second type of antenna port group of the wireless node, the baseband processing unit receiving channels for the plurality of antenna ports from the first type of antenna port group The signal is demodulated and modulated and sent to one or more antenna port transmit channels in the second type of antenna port group.
7. The method of claim 2 wherein:

   The method further includes:

   The establishment and maintenance of the main backhaul path between the wireless node and its single-hop adjacent wireless node by using the backhaul path main control channel includes performing the following processing:

   The first wireless node and the second wireless node acquire time-frequency resource information of the first backhaul service transmission channel included in the primary backhaul path between the first wireless node and the second wireless node from the backhaul path management unit by using the backhaul path main control channel And wireless node connection relationship information;

   The first wireless node and the second wireless node determine an antenna port pair according to the acquired wireless node connection relationship on the time-frequency resource corresponding to the first backhaul service transmission channel, and establish the first antenna pair by using the determined antenna port pair. Backhaul service transmission channel;

   After the first backhaul service transmission channel is established, the first wireless node sends an access request or an access guide signal for establishing the first backhaul service transmission channel to the second wireless node by using a backhaul path main control channel; Or the second wireless node sends an access request or an access guide signal for establishing the first backhaul service transmission channel to the first wireless node by using a backhaul path main control channel;

   The first wireless node or the second wireless node sends first backhaul service transmission channel establishment completion indication information to the backhaul path management unit through a backhaul path main control channel.
8. The method of claim 2 wherein:

   The method further includes:

   The backhaul path auxiliary control channel is used to newly establish a backhaul path other than the main backhaul path between the wireless node and its single-hop adjacent wireless node, including performing the following processing:

   The first wireless node and the second wireless node corresponding to the newly established backhaul path acquire the time-frequency resource used by the newly added backhaul service transmission channel and/or the backhaul path auxiliary control channel corresponding to the newly established backhaul service transmission channel through the backhaul path main control channel. Information and connection information between wireless nodes;

   And establishing, by the first wireless node and the second wireless node, the newly established backhaul service transmission channel and/or the backhaul path auxiliary control corresponding to the newly established backhaul service transmission channel according to the time-frequency resource information and the wireless node connection relationship information. channel.
9. The method of claim 2 wherein:

   The method further includes:

   Deleting a backhaul path other than the main backhaul path between the wireless node and its one-hop adjacent wireless node by using the backhaul path auxiliary control channel includes performing the following processing:

   The first wireless node and the second wireless node corresponding to the backhaul path to be deleted acquire the indication information for deleting the specified backhaul path by using the backhaul path main control channel, where the indication information includes the path number information to be deleted and/or the path to be deleted. Antenna port information;

   And releasing, by the first wireless node and the second wireless node, the time-frequency occupied by the backhaul service transmission channel of the backhaul path to be deleted and/or the backhaul path auxiliary control channel corresponding to the backhaul service transmission channel to be deleted according to the indication information Resources.
10. The method of claim 2 wherein:

    The method further includes:

    The initial wireless node and the destination wireless node of the backhaul path acquire configuration information of the measurement time-frequency window configured by the backhaul path management unit on the candidate backhaul transmission frequency band through the primary backhaul path;

    The initiating wireless node and the destination wireless node of the backhaul path measure the amplitude or power of the radio frequency signal or the radio frequency interference in the measured time-frequency window, and report to the backhaul path management unit through the main backhaul path in the measurement time-frequency window. Measurement data or measurement results.
11. The method of claim 2 wherein:

    After the backhaul service transmission channel is established between the first antenna port of the wireless node and the second antenna port of the neighboring wireless node, the method further includes:

    a) the wireless node points the transmit beam of the first antenna port to adjust an angle adjustment amount θ;

    b) the wireless node transmitting a specific direction finding signal to a second antenna port of the neighboring wireless node using a backhaul path control channel or a backhaul traffic transmission channel;

    c) the second antenna port of the adjacent wireless node receives the specific amplitude direction finding signal and 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 determines whether the amplitude value of the received signal fed back by the neighboring wireless node reaches a maximum value, and ends the adjustment of the direction of the transmit beam; otherwise, the transmit beam is directed to adjust a new angle adjustment

    

    Go back to step b).
12. The method of claim 2 wherein:

    After the backhaul service transmission channel is established between the first antenna port of the wireless node and the second antenna port of the neighboring wireless node, the method further includes:

    a) the wireless node points the receiving beam of the first antenna port to adjust an angle adjustment amount θ;

    b) the wireless node receives a specific amplitude-finding signal sent by the second antenna port of the adjacent wireless node by using a backhaul path control channel or a backhaul service transmission channel on the first antenna port, and measuring the amplitude of the received signal;

    c) the wireless node determines whether the amplitude value of the received signal reaches a maximum value, and ends the adjustment of the direction of the receive beam; otherwise, the receive beam is directed to adjust a new angle adjustment

    

    Go back to step b).
13. A backhaul transmission device includes:

    a backhaul path main control channel configuration module, configured to configure a backhaul path main control channel on an antenna port included in the first type of antenna port group of the wireless node;

    a backhaul path auxiliary control channel configuration module, configured to configure a backhaul path auxiliary control channel on at least one antenna port included in the first type of antenna port group of the wireless node;

    The backhaul service transport channel configuration module is configured to configure a backhaul service transport channel between the two sets of first type antenna port groups of the wireless node and/or between the first type of antenna port group and the second type of antenna port group.
14. The apparatus of claim 13 wherein:

    The backhaul path main control channel is used for establishing and maintaining a primary backhaul path between the wireless node and its single-hop adjacent wireless node;

    The backhaul path auxiliary control channel is used to newly establish or delete a backhaul path other than the main backhaul path between the wireless node and its single-hop adjacent wireless node;

    At least one of the backhaul path primary control channel and the backhaul path secondary control channel transmits at least one of the following information:

    Return path control information, backhaul channel bandwidth, backhaul channel frequency, backhaul channel access guidance, Backhaul channel reconfiguration information, backhaul channel beam alignment control information, and interference detection information of the wireless node on the candidate backhaul frequency band.
15. The apparatus of claim 13 wherein:

    The backhaul path main control channel configuration module is configured to configure the backhaul path main control channel on one antenna port included in the first type of antenna port group of the wireless node in the following manner:

    Configuring an in-band backhaul path primary control channel in the same frequency band as the backhaul traffic transmission channel operating band; and/or,

    The outband backhaul path main control channel is configured in a frequency band different from the backhaul service transmission channel operating band.
16. The apparatus of claim 13 wherein:

    The backhaul path auxiliary control channel configuration module is configured to configure a backhaul path secondary control channel on at least one antenna port included in the first type of antenna port group of the wireless node in the following manner:

    Obtaining time-frequency resource location information of the backhaul path auxiliary control channel transmitted through the backhaul path main control channel;

    Configuring the backhaul path auxiliary control channel by using time-frequency resource location information of the backhaul path auxiliary control channel;

    The backhaul path secondary control channel includes: an inband backhaul path secondary control channel in the same frequency band as the backhaul service transmission channel and/or an outband backhaul path secondary control channel in a different frequency band from the backhaul service transmission channel.
17. The apparatus of claim 13 wherein:

    The backhaul service transmission channel configuration module is configured to configure a backhaul service transmission channel between the two sets of the first type of antenna port groups of the wireless node in the following manner:

    Configuring one-to-one, one-to-many, many-to-one or many-to-many between two sets of first-class antenna port groups of the wireless node according to backhaul path control information acquired from the backhaul path main control channel or the secondary control channel The backhaul service transmission channel includes configuration in any of the following a)-d):

    a) configuring a radio frequency transmission distribution network between the two sets of first type antenna port groups of the wireless node, the shot The frequency transmission distribution network transmits signals from one antenna port receiving channel of one group of first type antenna port groups to one or more antennas of another group of first type antenna port groups by radio frequency direct amplification and/or radio frequency frequency conversion Port transmission channel;

    b) configuring a radio frequency transmission distribution network between the two sets of first type antenna port groups of the wireless node, the radio frequency transmission distribution network transmitting multiple antennas from a group of first type antenna port groups by radio frequency direct amplification and/or radio frequency conversion The signal of the port receiving channel is sent to one or more antenna port transmitting channels of another group of antenna port groups of the first type;

    c) configuring a radio frequency transmission network and a baseband processing unit between the two sets of first type antenna port groups of the wireless node, the baseband processing unit demodulating signals from one antenna port receiving channel of a group of first type antenna port groups After modulation, sent to one or more antenna port transmission channels in another group of antenna port groups of the first type;

    d) configuring a radio frequency transmission network and a baseband processing unit between the two sets of first type antenna port groups of the wireless node, the baseband processing unit demodulating signals of the plurality of antenna port receiving channels from a group of first type antenna port groups And modulated to one or more antenna port transmit channels in another set of first type antenna port groups.
18. The apparatus of claim 13 wherein:

    The backhaul service transmission channel configuration module is configured to configure a backhaul service transmission channel between the first type of antenna port group and the second type of antenna port group of the wireless node in the following manner:

    The one-to-one, one-to-many, many-to-one or more between the first type of antenna port group and the second type of antenna port group of the wireless node according to the backhaul path control information acquired from the backhaul path main control channel or the secondary control channel Configure the backhaul service transport channel in a multi-mode manner, including using any of the following methods a)-d):

    a) Configuring a radio frequency transmission distribution network between the first type of antenna port group and the second type of antenna port group of the wireless node, the radio frequency transmission distribution network will be from the first type of antenna port group by radio frequency direct amplification and/or radio frequency conversion One antenna port receiving channel signal is sent to one or more antenna port transmitting channels of the second type antenna port group;

    b) configuring a radio frequency transmission distribution network between the first type of antenna port group and the second type of antenna port group of the wireless node, the radio frequency transmission distribution network will be derived from radio frequency direct amplification and/or radio frequency conversion Signals of the plurality of antenna port receiving channels of the first type of antenna port group are sent to one or more antenna port transmitting channels of the second type of antenna port group;

    c) configuring a radio frequency transmission network and a baseband processing unit between the first type of antenna port group and the second type of antenna port group of the wireless node, the baseband processing unit receiving signals of the channel from one antenna port of the first type of antenna port group Demodulating and modulating and transmitting to one or more antenna port transmission channels in the second type of antenna port group;

    d) configuring a radio frequency transmission network and a baseband processing unit between the first type of antenna port group and the second type of antenna port group of the wireless node, the baseband processing unit receiving channels for the plurality of antenna ports from the first type of antenna port group The signal is demodulated and modulated and sent to one or more antenna port transmit channels in the second type of antenna port group.
19. The apparatus of claim 14 wherein:

    The device also includes:

    The primary backhaul path setup and hold module is configured to use the backhaul path primary control channel to establish and maintain a primary backhaul path between the wireless node and its single-hop adjacent wireless node, including performing the following processing:

    The first wireless node and the second wireless node acquire time-frequency resource information of the first backhaul service transmission channel included in the primary backhaul path between the first wireless node and the second wireless node from the backhaul path management unit by using the backhaul path main control channel And wireless node connection relationship information;

    The first wireless node and the second wireless node determine an antenna port pair according to the acquired wireless node connection relationship on the time-frequency resource corresponding to the first backhaul service transmission channel, and establish the first antenna pair by using the determined antenna port pair. Backhaul service transmission channel;

    After the first backhaul service transmission channel is established, the first wireless node sends an access request or an access guide signal for establishing the first backhaul service transmission channel to the second wireless node by using a backhaul path main control channel; Or the second wireless node sends an access request or an access guide signal for establishing the first backhaul service transmission channel to the first wireless node by using a backhaul path main control channel;

    The first wireless node or the second wireless node sends first backhaul service transmission channel establishment completion indication information to the backhaul path management unit through a backhaul path main control channel.
20. The apparatus of claim 14 wherein:

    The device also includes:

    The establishment module of the other backhaul path is configured to use the backhaul path auxiliary control channel to newly establish a backhaul path other than the main backhaul path between the wireless node and its single-hop adjacent wireless node, including performing the following processing:

    The first wireless node and the second wireless node corresponding to the newly established backhaul path acquire the time-frequency resource used by the newly added backhaul service transmission channel and/or the backhaul path auxiliary control channel corresponding to the newly established backhaul service transmission channel through the backhaul path main control channel. Information and connection information between wireless nodes;

    And establishing, by the first wireless node and the second wireless node, the newly established backhaul service transmission channel and/or the backhaul path auxiliary control corresponding to the newly established backhaul service transmission channel according to the time-frequency resource information and the wireless node connection relationship information. channel.
21. The apparatus of claim 14 wherein:

    The device also includes:

    The deletion module of the other backhaul path is configured to use the backhaul path auxiliary control channel to delete the backhaul path except the main backhaul path between the wireless node and its single-hop adjacent wireless node, including performing the following processing:

    The first wireless node and the second wireless node corresponding to the backhaul path to be deleted acquire the indication information for deleting the specified backhaul path by using the backhaul path main control channel, where the indication information includes the path number information to be deleted and/or the path to be deleted. Antenna port information;

    And releasing, by the first wireless node and the second wireless node, the time-frequency occupied by the backhaul service transmission channel of the backhaul path to be deleted and/or the backhaul path auxiliary control channel corresponding to the backhaul service transmission channel to be deleted according to the indication information Resources.
22. The apparatus of claim 14 wherein:

    The device also includes:

    The radio frequency measurement module, the initiating wireless node and the destination wireless node configured as the backhaul path acquire configuration information of the measurement time-frequency window configured by the backhaul path management unit on the candidate backhaul transmission frequency band by using the main backhaul path;

    The initiating wireless node and the destination wireless node of the backhaul path measure the amplitude or power of the radio frequency signal or the radio frequency interference in the measured time-frequency window, and report to the backhaul path management unit through the main backhaul path in the measurement time-frequency window. Measurement data or measurement results.
23. The apparatus of claim 14 wherein:

    The device also includes:

    The beam alignment module is configured to perform the following processing after the backhaul service transmission channel is established between the first antenna port of the wireless node and the second antenna port of the adjacent wireless node:

    a) the wireless node points the transmit beam of the first antenna port to adjust an angle adjustment amount θ;

    b) the wireless node transmitting a specific direction finding signal to a second antenna port of the neighboring wireless node using a backhaul path control channel or a backhaul traffic transmission channel;

    c) the second antenna port of the adjacent wireless node receives the specific amplitude direction finding signal and 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 determines whether the amplitude value of the received signal fed back by the neighboring wireless node reaches a maximum value, and ends the adjustment of the direction of the transmit beam; otherwise, the transmit beam is directed to adjust a new angle adjustment

    

    Go back to step b).
24. The apparatus of claim 14 wherein:

    The device also includes:

    The beam alignment module is configured to perform the following processing after the backhaul service transmission channel is established between the first antenna port of the wireless node and the second antenna port of the adjacent wireless node:

    a) the wireless node points the receiving beam of the first antenna port to adjust an angle adjustment amount θ;

    b) the wireless node receives a specific amplitude-finding signal sent by the second antenna port of the adjacent wireless node by using a backhaul path control channel or a backhaul service transmission channel on the first antenna port, and measuring the amplitude of the received signal;

    c) the wireless node determines whether the amplitude value of the received signal reaches a maximum value, and ends the adjustment of the direction of the receive beam; otherwise, the receive beam is directed to adjust a new angle adjustment

    

    Go back to step b).

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