CN106413107A - Control signal transmitting and receiving method and device - Google Patents

Abstract

The invention discloses a control signal transmitting method for solving the technical problem of overlarge system overhead due to that a central node continues to send control signals to a remote node. The method comprises the steps that after the connection between a central node and a remote node is established, the central node receives notification signaling transmitted by the remote node, the notification signaling being used for instructing whether the central node transmits control signals; and if the notification signaling instructs the central node to transmit the control signals, the central node transmits the control signals to the remote node after receiving trigger signaling of the remote node according to an instruction of the notification signaling. The invention also discloses a corresponding receiving method and device.

Description

A kind of control signal sending, receiving method and equipment

Technical field

The present invention relates to communication technical field, particularly to a kind of control signal sending, receiving method and equipment.

Background technology

For wireless communication system, such as LTE (Long Term Evolution, Long Term Evolution) system, first Beginning access phase, terminal is passed through to detect the PSS that eNB (Evolved Node B, evolved node B) launches (Physical Synchronization Signal, master sync signal)/SSS (Secondary Synchronization Signal, auxiliary synchronous signals) obtain cell ID (Identity, identity number), initial timing information and Initial frequency deviation information etc., and by demodulate eNB transmitting PBCH (Physical Broadcast Channel, Physical Broadcast Channel) obtain other system information, these control signals that terminal is passed through to obtain are set up with eNB Connect.

After terminal is set up with eNB and is connected, no matter whether terminal also needs to PSS/SSS and PBCH etc. controls Signal, eNB still may proceed to send these information by radio frames to terminal, leads to overhead larger.

Content of the invention

The embodiment of the present invention provides a kind of control signal sending, receiving method and equipment, for solving because of center Node continues to send control signal to distant-end node and leads to the larger technical problem of overhead.

In a first aspect, providing a kind of control signal sending method, including：

After Centroid and distant-end node are set up and be connected, described Centroid receives described distant-end node and sends out The notice signaling sent, described notice signaling is used for indicating whether described Centroid sends control signal；

If described notice signaling indicates that described Centroid sends described control signal, described Centroid root According to the instruction of described notice signaling, to described distant-end node after receiving the triggering signaling of described distant-end node Send described control signal.

In conjunction with a first aspect, in the first possible implementation of first aspect, described control signal bag Include PBCH and/or PSCH.

In conjunction with the first possible implementation of first aspect or first aspect, in the second of first aspect In possible implementation, after described Centroid receives the notice signaling that described distant-end node sends, Also include：

Described Centroid sends radio frames to described distant-end node；Wherein, being used in described radio frames The primary importance carrying described control signal carries data message；Described notice signaling indicates described Centroid Send described control signal, and described Centroid does not receive the described triggering letter that described distant-end node sends Order, or, described notice signaling indicates that described Centroid does not send described control signal.

The first possible implementation in conjunction with first aspect or first aspect or the possible realization of second Mode, in the third possible implementation of first aspect, receives described far-end in described Centroid After the notice signaling that node sends, also include：

If described notice signaling indicates that described Centroid sends described control signal, described Centroid root According to communication protocol or pre-defined rule, determine that to the mode of the described distant-end node described control signal of transmission be to connect Described control signal is sent to described distant-end node after receiving the triggering signaling of described distant-end node.

The first possible implementation in conjunction with first aspect or first aspect or the possible realization of second Mode, in the 4th kind of possible implementation of first aspect, if described notice signaling indicates described center Node sends described control signal, then described notice signaling is additionally operable to indicate described Centroid to described far-end The mode that node sends described control signal is to described remote after the triggering signaling receiving described distant-end node End node sends described control signal.

In conjunction with first aspect or first aspect the first possible implementation to the 4th kind of possible realization Any one possible implementation in mode, in the 5th kind of possible implementation of first aspect, Described control signal is sent to described distant-end node after receiving the triggering signaling of described distant-end node, including：

After receiving the triggering signaling of described distant-end node, send a described control to described distant-end node Signal；Or

After receiving the triggering signaling of described distant-end node, continuously send multiple described to described distant-end node Control signal.

In conjunction with the 5th kind of possible implementation of first aspect, in the 6th kind of possible realization of first aspect In mode, before the continuous multiple described control signals of transmission to described distant-end node, also include：

The quantity of the control signal being continuously transmitted according to communication protocol or pre-defined rule determination；Or

The quantity of the control signal continuously transmitting is determined according to the instruction of described notice signaling.

In conjunction with first aspect or first aspect the first possible implementation to the 6th kind of possible realization Any one possible implementation in mode, in the 7th kind of possible implementation of first aspect, also Including：

When described control signal changes, described Centroid determines according to communication protocol or pre-defined rule Time-domain resource and frequency domain resource, to described distant-end node send one change after control signal；Or

When described control signal changes, described Centroid determines according to communication protocol or pre-defined rule Time-domain resource and frequency domain resource, continuously to described distant-end node send multiple change after control signal.

Second aspect, provides a kind of control signal method of reseptance, including：

After distant-end node and Centroid are set up and be connected, described distant-end node sends to described Centroid Notice signaling, described notice signaling is used for indicating whether described Centroid sends control signal；

If described notice signaling indicates that described Centroid sends described control signal, described distant-end node is pressed According to the instruction of described notice signaling, after sending triggering signaling to described Centroid, receive described centromere The described control signal that point sends.

In conjunction with second aspect, in the first possible implementation of second aspect, described control signal bag Include PBCH and/or PSCH.

In conjunction with the first possible implementation of second aspect or second aspect, in the second of second aspect In possible implementation, after described distant-end node sends notice signaling to described Centroid, also wrap Include：

Described distant-end node receives the radio frames that described remote Centroid sends；Wherein, in described radio frames For carry described control signal primary importance carry data message；During described notice signaling instruction is described Heart node sends described control signal, and described Centroid does not receive the described of described distant-end node transmission Triggering signaling, or, described notice signaling indicates that described Centroid does not send described control signal.

The first possible implementation in conjunction with second aspect or second aspect or the possible realization of second Mode, in the third possible implementation of second aspect, in described distant-end node to described centromere After point sends notice signaling, also include：

If notice signaling Deictic Center node sends control signal, described distant-end node is according to communication protocol or pre- Set pattern then, determines that the mode receiving described control signal is after sending triggering signaling to described Centroid, Receive the described control signal that described Centroid sends.

The first possible implementation in conjunction with second aspect or second aspect or the possible realization of second Mode, in the 4th kind of possible implementation of second aspect, if described notice signaling indicates described center Node sends described control signal, then described notice signaling is additionally operable to indicate described Centroid to described far-end The mode that node sends described control signal is to described remote after the triggering signaling receiving described distant-end node End node sends described control signal.

In conjunction with second aspect or second aspect the first possible implementation to the 4th kind of possible realization Any one possible implementation in mode, in the 5th kind of possible implementation of second aspect, Send after triggering signaling to described Centroid, receive the described control signal that described Centroid sends, bag Include：

After sending triggering signaling to described Centroid, receive the described control that described Centroid sends Signal processed；Or

After sending triggering signaling to described Centroid, the continuous multiple institutes receiving described Centroid transmission State control signal.

In conjunction with the 5th kind of possible implementation of second aspect, in the 6th kind of possible realization of second aspect In mode, after the continuous multiple described control signal receiving described Centroid transmission, also include：

Described distant-end node merges the plurality of control signal receiving, and obtains master control signal；

Described distant-end node obtains, according to described master control signal, the system control letter that described Centroid sends Breath or synchronizing information.

In conjunction with second aspect or second aspect the first possible implementation to the 6th kind of possible realization Any one possible implementation in mode, in the 7th kind of possible implementation of second aspect, After described distant-end node sends notice signaling to described Centroid, also include：

Time-domain resource and frequency domain resource that described distant-end node determines according to communication protocol or pre-defined rule, receive Control signal after the change that described Centroid sends；Or

Time-domain resource and frequency domain resource that described distant-end node determines according to communication protocol or pre-defined rule, continuously Receive the control signal after multiple changes that described Centroid sends.

In conjunction with second aspect or second aspect the first possible implementation to the 7th kind of possible realization Any one possible implementation in mode, in the 8th kind of possible implementation of second aspect, institute State the quantity of the control signal that notice signaling is additionally operable to indicate that described Centroid continuously transmits.

The third aspect, provides a kind of Centroid, including：

Receiver module, after setting up and be connected in described Centroid and distant-end node, receives described far-end The notice signaling that node sends, described notice signaling is used for indicating whether described Centroid sends control letter Number；

Sending module, if sending described control signal for the described Centroid of described notice signaling instruction, Described Centroid, according to the instruction of described notice signaling, receives described distant-end node in described receiver module Triggering signaling after to described distant-end node send described control signal.

In conjunction with the third aspect, in the first possible implementation of the third aspect, described control signal bag Include PBCH and/or PSCH.

In conjunction with the first possible implementation of the third aspect or the third aspect, in the second of the third aspect In possible implementation, described sending module is additionally operable to：

After described receiver module receives the notice signaling that described distant-end node sends, to described distant-end node Send radio frames；Wherein, the primary importance for carrying described control signal in described radio frames carries Data message；Described notice signaling indicates that described Centroid sends described control signal, and described centromere Point does not receive the described triggering signaling that described distant-end node sends, or, during the instruction of described notice signaling is described Heart node does not send described control signal.

The first possible implementation in conjunction with the third aspect or the third aspect or the possible realization of second Mode, in the third possible implementation of the third aspect, described Centroid also includes determining module, For：

After described receiver module receives the notice signaling that described distant-end node sends, if described notice signaling Indicate that described Centroid sends described control signal, then according to communication protocol or pre-defined rule, determine to institute State distant-end node send described control signal mode be receive described distant-end node triggering signaling after to Described distant-end node sends described control signal.

The first possible implementation in conjunction with the third aspect or the third aspect or the possible realization of second Mode, in the 4th kind of possible implementation of the third aspect, if described notice signaling indicates described center Node sends described control signal, then described notice signaling is additionally operable to indicate described Centroid to described far-end The mode that node sends described control signal is to described remote after the triggering signaling receiving described distant-end node End node sends described control signal.

In conjunction with the third aspect or the third aspect the first possible implementation to the 4th kind of possible realization Any one possible implementation in mode, in the 5th kind of possible implementation of the third aspect, institute State sending module to be used for：

After described receiver module receives the triggering signaling of described distant-end node, send to described distant-end node One described control signal；Or

After described receiver module receives the triggering signaling of described distant-end node, continuously to described distant-end node Send multiple described control signals.

In conjunction with the 5th kind of possible implementation of the third aspect, in the 6th kind of possible realization of the third aspect In mode, described Centroid also includes determining module, is used for：

Before described sending module continuously sends multiple described control signals to described distant-end node, according to logical Believe that agreement or pre-defined rule determine the quantity of the control signal continuously transmitting；Or

Before described sending module continuously sends multiple described control signals to described distant-end node, according to institute The instruction stating notice signaling determines the quantity of the control signal continuously transmitting.

In conjunction with the third aspect or the third aspect the first possible implementation to the 6th kind of possible realization Any one possible implementation in mode, in the 7th kind of possible implementation of the third aspect, institute State sending module to be additionally operable to：

When described control signal changes, the time-domain resource that determines according to communication protocol or pre-defined rule and Frequency domain resource, sends the control signal after a change to described distant-end node；Or

When described control signal changes, the time-domain resource that determines according to communication protocol or pre-defined rule and Frequency domain resource, continuously sends the control signal after multiple changes to described distant-end node.

Fourth aspect, provides a kind of distant-end node, including：

Sending module, after setting up and be connected in described distant-end node and Centroid, to described centromere Point sends notice signaling, and described notice signaling is used for indicating whether described Centroid sends control signal；

Receiver module, if sending described control signal for the described Centroid of described notice signaling instruction, According to the instruction of described notice signaling, after described sending module sends triggering signaling to described Centroid, Receive the described control signal that described Centroid sends.

In conjunction with fourth aspect, in the first possible implementation of fourth aspect, described control signal bag Include PBCH and/or PSCH.

In conjunction with the first possible implementation of fourth aspect or fourth aspect, in the second of fourth aspect In possible implementation, described receiver module is additionally operable to：

After described sending module sends notice signaling to described Centroid, receive described Centroid and send out The radio frames sent；Wherein, the primary importance for carrying described control signal in described radio frames carries Data message；Described notice signaling indicates that described Centroid sends described control signal, and described centromere Point does not receive the described triggering signaling that described distant-end node sends, or, during the instruction of described notice signaling is described Heart node does not send described control signal.

The first possible implementation in conjunction with fourth aspect or fourth aspect or the possible realization of second Mode, in the third possible implementation of fourth aspect, described distant-end node also includes determining module, For：

After described sending module sends notice signaling to described Centroid, if notice signaling Deictic Center Node sends control signal, according to communication protocol or pre-defined rule, determines the mode receiving described control signal It is after sending triggering signaling to described Centroid, receive the described control letter that described Centroid sends Number.

The first possible implementation in conjunction with fourth aspect or fourth aspect or the possible realization of second Mode, in the 4th kind of possible implementation of fourth aspect, if described notice signaling indicates described center Node sends described control signal, then described notice signaling is additionally operable to indicate described Centroid to described far-end The mode that node sends described control signal is to described remote after the triggering signaling receiving described distant-end node End node sends described control signal.

In conjunction with fourth aspect or fourth aspect the first possible implementation to the 4th kind of possible realization Any one possible implementation in mode, in the 5th kind of possible implementation of fourth aspect, institute State receiver module to be used for：

After described sending module sends triggering signaling to described Centroid, receive described Centroid and send A described control signal；Or

After described sending module sends triggering signaling to described Centroid, continuously receive described Centroid The multiple described control signal sending.

In conjunction with the 5th kind of possible implementation of fourth aspect, in the 6th kind of possible realization of fourth aspect In mode, described distant-end node also includes merging module and acquisition module；

Described merging module, in the continuous multiple institutes receiving described Centroid transmission of described receiver module After stating control signal, merge the plurality of control signal receiving, obtain master control signal；

Described acquisition module, for obtaining, according to described master control signal, the system control that described Centroid sends Information processed or synchronizing information.

In conjunction with fourth aspect or fourth aspect the first possible implementation to the 6th kind of possible realization Any one possible implementation in mode, in the 7th kind of possible implementation of fourth aspect, institute State receiver module to be additionally operable to：

After described sending module sends notice signaling to described Centroid, according to communication protocol or predetermined Time-domain resource and frequency domain resource that rule determines, receive the control after the change that described Centroid sends Signal；Or

After described sending module sends notice signaling to described Centroid, according to communication protocol or predetermined Time-domain resource and frequency domain resource that rule determines, after continuously receiving multiple changes that described Centroid sends Control signal.

In conjunction with fourth aspect or fourth aspect the first possible implementation to the 7th kind of possible realization Any one possible implementation in mode, in the 8th kind of possible implementation of fourth aspect, institute State the quantity of the control signal that notice signaling is additionally operable to indicate that described Centroid continuously transmits.

5th aspect, provides a kind of Centroid, including：

Memory, for store instruction；

Receiver, after setting up and be connected in described Centroid and distant-end node, receives described far-end section The notice signaling that point sends, described notice signaling is used for indicating whether described Centroid sends control signal；

Processor, for executing described instruction, if described notice signaling instruction described Centroid transmission is described Control signal, then the instruction according to described notice signaling, after receiving the triggering signaling of described distant-end node, Described control signal is sent to described distant-end node by transmitter.

In conjunction with the 5th aspect, in the first possible implementation of the 5th aspect, described control signal bag Include PBCH and/or PSCH.

In conjunction with the first possible implementation of the 5th aspect or the 5th aspect, in the second of the 5th aspect In possible implementation, described transmitter is additionally operable to：

After described receiver receives the notice signaling that described distant-end node sends, send out to described distant-end node Send radio frames；Wherein, the primary importance for carrying described control signal in described radio frames carries number It is believed that breath；Described notice signaling indicates that described Centroid sends described control signal, and described Centroid Do not receive the described triggering signaling that described distant-end node sends, or, described notice signaling indicates described center Node does not send described control signal.

The first possible implementation in conjunction with the 5th aspect or the 5th aspect or the possible realization of second Mode, in the third possible implementation of the 5th aspect, described processor is additionally operable to：

After described receiver receives the notice signaling that described distant-end node sends, if described notice signaling refers to Show that described Centroid sends described control signal, then according to communication protocol or pre-defined rule, determine to described The mode that distant-end node sends described control signal is to institute after the triggering signaling receiving described distant-end node State distant-end node and send described control signal.

The first possible implementation in conjunction with the 5th aspect or the 5th aspect or the possible realization of second Mode, in the 4th kind of possible implementation of the 5th aspect, if described notice signaling indicates described center Node sends described control signal, then described notice signaling is additionally operable to indicate described Centroid to described far-end The mode that node sends described control signal is to described remote after the triggering signaling receiving described distant-end node End node sends described control signal.

In conjunction with the 5th aspect or the 5th aspect the first possible implementation to the 4th kind of possible realization Any one possible implementation in mode, in the 5th kind of possible implementation of the 5th aspect, institute State processor to be used for：

After described receiver receives the triggering signaling of described distant-end node, by described transmitter to described Distant-end node sends a described control signal；Or

After described receiver receives the triggering signaling of described distant-end node, by described transmitter continuously to Described distant-end node sends multiple described control signals.

In conjunction with the 5th kind of possible implementation of the 5th aspect, in the 6th kind of possible realization of the 5th aspect In mode, described processor is additionally operable to：

Before multiple described control signals are continuously sent to described distant-end node by described transmitter, according to The quantity of control signal that communication protocol or pre-defined rule determination continuously transmit；Or

Before multiple described control signals are continuously sent to described distant-end node by described transmitter, according to The instruction of described notice signaling determines the quantity of the control signal continuously transmitting.

In conjunction with the 5th aspect or the 5th aspect the first possible implementation to the 6th kind of possible realization Any one possible implementation in mode, in the 7th kind of possible implementation of the 5th aspect, institute State processor to be additionally operable to：

When described control signal changes, the time-domain resource that determines according to communication protocol or pre-defined rule and Frequency domain resource, sends the control signal after a change by described transmitter to described distant-end node；Or

When described control signal changes, the time-domain resource that determines according to communication protocol or pre-defined rule and Frequency domain resource, the control signal after described transmitter continuously sends multiple changes to described distant-end node.

6th aspect, provides a kind of distant-end node, including：

Memory, for store instruction；

Processor, for executing described instruction, after described distant-end node and Centroid are set up and are connected, Notice signaling is sent to described Centroid by transmitter, described notice signaling is used for indicating described centromere Whether point sends control signal；

Receiver, if send described control signal, institute for the described Centroid of described notice signaling instruction State the instruction according to described notice signaling for the distant-end node, pass through described transmitter in described in described processor After heart node sends triggering signaling, receive the described control signal that described Centroid sends.

In conjunction with the 6th aspect, in the first possible implementation of the 6th aspect, described control signal bag Include PBCH and/or PSCH.

In conjunction with the first possible implementation of the 6th aspect or the 6th aspect, in the second of the 6th aspect In possible implementation, described receiver is additionally operable to：

After described processor sends notice signaling by described transmitter to described Centroid, receive institute State the radio frames of Centroid transmission；Wherein, in described radio frames for carrying described control signal Primary importance carries data message；Described notice signaling indicates that described Centroid sends described control signal, And described Centroid does not receive the described triggering signaling that described distant-end node sends, or, described notify letter Order indicates that described Centroid does not send described control signal.

The first possible implementation in conjunction with the 6th aspect or the 6th aspect or the possible realization of second Mode, in the third possible implementation of the 6th aspect, described processor is additionally operable to：

After notice signaling is sent to described Centroid by described transmitter, if in notice signaling instruction Heart node sends control signal, according to communication protocol or pre-defined rule, determines the side receiving described control signal Formula is after sending triggering signaling to described Centroid, receives the described control letter that described Centroid sends Number.

The first possible implementation in conjunction with the 6th aspect or the 6th aspect or the possible realization of second Mode, in the 4th kind of possible implementation of the 6th aspect, if described notice signaling indicates described center Node sends described control signal, then described notice signaling is additionally operable to indicate described Centroid to described far-end The mode that node sends described control signal is to described remote after the triggering signaling receiving described distant-end node End node sends described control signal.

In conjunction with the 6th aspect or the 6th aspect the first possible implementation to the 4th kind of possible realization Any one possible implementation in mode, in the 5th kind of possible implementation of the 6th aspect, institute State receiver to be used for：

After described processor sends triggering signaling by described transmitter to described Centroid, receive described The described control signal that Centroid sends；Or

After described processor sends triggering signaling by described transmitter to described Centroid, continuous reception The multiple described control signal that described Centroid sends.

In conjunction with the 5th kind of possible implementation of the 6th aspect, in the 6th kind of possible realization of the 6th aspect In mode, described processor is additionally operable to：

After the multiple described control signal that the described Centroid of the continuous reception of described receiver sends, merge The plurality of control signal receiving, obtains master control signal；

System control information or the synchronous letter that described Centroid sends is obtained according to described master control signal Breath.

In conjunction with the 6th aspect or the 6th aspect the first possible implementation to the 6th kind of possible realization Any one possible implementation in mode, in the 7th kind of possible implementation of the 6th aspect, institute State receiver to be additionally operable to：

After described processor sends notice signaling by described transmitter to described Centroid, according to logical The time-domain resource of letter agreement or pre-defined rule determination and frequency domain resource, receive that described Centroid sends Control signal after change；Or

After described processor sends notice signaling by described transmitter to described Centroid, according to logical The time-domain resource of letter agreement or pre-defined rule determination and frequency domain resource, continuously receive what described Centroid sent Control signal after multiple changes.

In conjunction with the 6th aspect or the 6th aspect the first possible implementation to the 7th kind of possible realization Any one possible implementation in mode, in the 8th kind of possible implementation of the 6th aspect, institute State the quantity of the control signal that notice signaling is additionally operable to indicate that described Centroid continuously transmits.

In the embodiment of the present invention, in distant-end node, ((Remote Unit, zooms out list for such as terminal or RU Unit) etc.) and Centroid (such as eNB or HU (Hub Unit, center cell) etc.) foundation is even After connecing, distant-end node can notify whether Centroid sends control signal, Centroid to distant-end node Can determine whether to send control signal according to the instruction of distant-end node, if need not send, Centroid is not Send control signal to distant-end node, if necessary to send, then Centroid can also receive far-end section Control signal is sent to distant-end node again after the triggering signaling (or referred to as demand signalling) of point.So, need not Centroid persistently sends control signal, and allows for the time resource vacated and frequency resource etc. to be used for data The transmission of channel, thus saving the expense of system, improves the spectrum efficiency of system.And, far-end section Point can independently determine how to receive control signal, can receive control signal again when needing, and improves Utilization rate to control signal, also avoids reception control signal when not needing control signal to cause information Redundancy.

And, in prior art, because control signal (such as PSS/SSS, PBCH etc.) typically can account for According to center RB (Resource Block, the Resource Block) resource in radio frames, lead to PDSCH (Physical Downlink Shared Channel, Physical Downlink Shared Channel) discrete RB at edge can only be occupied Resource, in SC-FDMA (Single-carrier Frequency-Division Multiple Access, single carrier Frequency division multiple access) under modulation system, this distributed resource mapping method increased the PAPR of emitter (Peak to Average Power Ratio, papr), and adopt provided in an embodiment of the present invention After technical scheme, when not sending these control signals, PDSCH maps in continuous subcarrier, The time-domain signal envelope now transmitting meets single-carrier property, it is hereby achieved that relatively low PAPR.

Brief description

Fig. 1 is the wireless backhaul schematic diagram of a scenario of NLOS scene；

Fig. 2 is a kind of frame structure schematic diagram of radio frames in the embodiment of the present invention；

Fig. 3 is the flow chart of method for sending information in the embodiment of the present invention；

Fig. 4 is the flow chart of message receiving method in the embodiment of the present invention；

The RB schematic diagram that Fig. 5 A occupies for PSS/SSS and PBCH；

Fig. 5 B is the RB schematic diagram after removing PSS/SSS and PBCH in the embodiment of the present invention；

Fig. 6 is the structured flowchart of the Centroid in the embodiment of the present invention；

Fig. 7 is the structured flowchart of the distant-end node in the embodiment of the present invention；

Fig. 8 is the structural representation of the Centroid in the embodiment of the present invention；

Fig. 9 is the structural representation of the distant-end node in the embodiment of the present invention.

Specific embodiment

Purpose, technical scheme and advantage for making the embodiment of the present invention are clearer, below in conjunction with the present invention Accompanying drawing in embodiment, the technical scheme in the embodiment of the present invention is clearly and completely described it is clear that Described embodiment is a part of embodiment of the present invention, rather than whole embodiments.Based in the present invention Embodiment, those of ordinary skill in the art obtained under the premise of not making creative work all its His embodiment, broadly falls into the scope of protection of the invention.

Hereinafter, the part term in the present invention is explained, in order to skilled artisan understands that.

Distant-end node in the embodiment of the present invention, may refer to terminal, or may refer to RU, or can To refer to small station, etc., Centroid, may refer to eNB, or may refer to HU, etc..

1) terminal, refers to provide a user with the equipment of voice and/or data connectivity, for example, can include tool The portable equipment having wireless connecting function or the processing equipment being connected to radio modem.This terminal Can be communicated with core net through RAN, be exchanged voice and/or data with RAN.This terminal can claim For UE (user equipment, user equipment), wireless terminal, mobile terminal, subscri er unit (Subscriber Unit), subscriber station (Subscriber Station), movement station (Mobile Station), mobile station (Mobile), Distant station (Remote Station), AP (Access Point, access point), remote terminal (Remote Terminal), access terminal (Access Terminal), user terminal (User Terminal), Yong Hudai Reason (User Agent) or subscriber's installation (User Device) etc..For example, it may be mobile phone (or Referred to as " honeycomb " phone), there is the computer of mobile terminal, portable, pocket, hand-held, calculating The built-in or vehicle-mounted mobile device of machine.For example, PCS (Personal Communication Service, PCS) phone, wireless phone, SIP (Session initiation Protocol) phone, WLL (Wireless Local Loop, WLL) stand, (Personal Digital Assistant, individual digital helps PDA Reason) etc. equipment.

2) base station (for example, access point), specifically may refer in access network to pass through one on interface in the air Or the equipment of multiple sector and wireless terminal communications.Base station can be used for by the air frame receiving and IP be grouped into Row is mutually changed, as the router between wireless terminal and the remainder of access network, wherein access network Remainder may include Internet protocol (IP) network.The attribute management to air interface for the base station also tunable. For example, base station can be evolved base station in LTE-A (NodeB or eNB or e-NodeB, Evolutional Node B), the present invention does not limit.

3) NLOS (Non Line of Sight, non line of sight), NLOS be with respect to LOS (Line of Sight, Sighting distance) for.Generally the propagation conditions of wireless communication system is divided into two kinds of environment of LOS and NLOS. Under the conditions of LOS, wireless signal " straight line " can be propagated unobstructedly between transmitting terminal and receiving terminal, And in the case of having barrier, that is, under the conditions of NLOS, wireless signal can only by reflection, scattering and The modes such as diffraction reach receiving terminal, typically also the transmission of the wireless signal under the conditions of NLOS are referred to as non line of sight Transmission.

4) term in the present invention " system " and " network " can be used interchangeably." multiple " refer to two or two More than individual."and/or", the incidence relation of description affiliated partner, represent there may be three kinds of relations, for example, A and/or B, can represent：, there are A and B, these three feelings of individualism B in individualism A simultaneously Condition.In addition, character "/", if no special instructions, typically represent forward-backward correlation to as if a kind of relation of "or".

Refer to Fig. 1, the technical scheme in the present invention is mainly used in NLOS scene naturally it is also possible to answer In LOS scene, complete the wireless backhaul of data between macro station and small station.Pico BS (base in Fig. 1 Stations, base station) it is small station, Macro BS is macro station, and the quantity in the small station shown in Fig. 1 does not represent reality Border quantity, is served only for explaining application scenarios.

The present embodiments relate to the wireless communication procedure between distant-end node and Centroid, with far-end section Point is that as a example RU, Centroid are HU, one of HU can allow to access one or more RU. RU passes through optical fiber or netting twine and a kind of multiple Pico (femto base station) and is attached data transmission, HU with Macro station is attached and is done data communication by optical fiber or netting twine or other transmission mediums.

Continue taking Fig. 1 as a example.In initial access phase, that is, before initial connection establishment, HU passes through wireless Frame sends PSS/SSS and PBCH to RU, and general HU is periodically to send PSS/SSS and PBCH, sends out every time Send radio frames, in radio frames, typically carry PSS/SSS and PBCH.RU passes through inspection The PSS/SSS surveying HU transmitting obtains cell ID, initial timing information and initial frequency deviation information etc., and passes through The PBCH of demodulation HU transmitting obtains other system information, and RU is built with HU by these control signals obtaining Vertical initial connection.After RU and HU set up and be initially connected, HU can continue through radio frames and send to RU PSS/SSS and PBCH, general HU or periodically transmission PSS/SSS and PBCH, send a nothing every time Line frame, typically carries PSS/SSS and PBCH in radio frames.

In the embodiment of the present invention, distant-end node is set up with Centroid and is initially connected it is also possible to referred to as set up Connect.

Wireless backhaul system have following particularity (continue with distant-end node be RU, Centroid be that HU is Example)：First, after HU and RU sets up initial connection, cell ID, system information etc. would generally be when long Interior holding is constant；Second, in the normal communication periods of HU and RU, timing information and initial frequency deviation information Can be obtained by measuring down public guide frequency etc. at, terminal, be not necessarily intended to by comprising that HU sends The radio frames of PBCH and/or PSCH obtain；3rd, the Limited Number (example of the RU of service under same HU As in general up to 4), in general HU does not need continually to launch PSCH (Physical Shared Channel, Physical Shared Channel) and PBCH be used for meeting the access of multiple RU.

In summary, according to current mode, after RU and HU set up and be connected, no matter whether RU also needs Want the control signals such as PSS/SSS and PBCH, HU still can persistently continue through radio frames and send these to RU Control signal, and these control signals are not necessarily RU needs, lead to overhead larger, reduce The spectrum efficiency of system.

The present invention fully takes into account problem above, in distant-end node and Centroid (such as eNB or HU Set up after connecting, distant-end node can notify Centroid, when receiving the triggering signaling of distant-end node Send control signal to distant-end node again, Centroid can send control signal according to the instruction of distant-end node, So, persistently send control signal without Centroid, save the expense of system, improve the frequency of system Spectrum efficiency.And, distant-end node can decide how to receive control signal in its sole discretion, can be when needing Receive control signal again, improve the utilization rate to control signal, also avoid when not needing control signal Receive the redundancy that control signal causes information.

In addition, in the embodiment of the present invention, sending PSS/SSS, may refer to, PSS/SSS is sent by PSCH, The information such as cell ID, initial timing information and initial frequency deviation information are carried in PSS/SSS.Likewise, sending out Send PBCH, may refer to, information is sent by PBCH, the information being sent by PBCH can include Other system information in addition to the information such as cell ID, initial timing information and initial frequency deviation information etc..

In the embodiment of the present invention, control signal can include PBCH and/or PSCH.Specifically, can recognize Include information that PSS/SSS carries and/or the information sending by PBCH for control signal.From another Individual angle, according to those skilled in the art usual term it is believed that control signal include PBCH and / or PSCH that is to say, that the control signal described in the embodiment of the present invention includes PBCH and/or PSCH, Refer to that control signal includes the information that sends by PBCH and/or the information sending by PSCH.

Refer to Fig. 2, be a kind of frame structure schematic diagram of possible radio frames.D therein represents descending son Frame, S represents special subframe, and U represents sub-frame of uplink.Can see in the in figure of refinement, in special subframe Including pilot signal, PBCH, GP (Guard Period, protection interval) and UpPTS (Uplink Pilot TimeSlot, uplink pilot time slot), descending sub frame includes pilot signal, PDCCH, PHICH (Physical Hybrid Automatic Repeat reQuest Indicator Channel physical mixed HARQ indicates Channel), the information such as PSS, SSS, sub-frame of uplink includes pilot signal etc..Wherein, the in figure of refinement, Every part not having to indicate, shows for transmission data.

The frame structure of this radio frames is the frame structure after the radio frames to LTE system improve, in this frame knot PCFICH (Physical Control Format Indicator Channel, physical control format is eliminated in structure Instruction channel), save the expense of system to a certain extent.

Radio frames in the embodiment of the present invention using the frame structure in Fig. 2, or can also use LTE The frame structure that system specifies originally, or can also be using the other possible frame structure of LTE system.

In the embodiment of the present invention, may need not send control signal in some radio frames, for example, need not send PBCH and/or PSCH, then, in these radio frames, it is originally used for carrying the position of these control signals Put it is possible to be used for carrying data, increased the traffic volume of data.

With reference to Figure of description, the embodiment of the present invention is described in further detail.

Refer to Fig. 3, the embodiment of the present invention provides a kind of method for sending information, the flow process description of methods described As follows.

Step 301：After Centroid and distant-end node are set up and be connected, Centroid receives distant-end node The notice signaling sending, whether notice signaling sends control signal for Deictic Center node.

In the present embodiment, it is as a example HU, distant-end node are RU by Centroid.

After HU and RU set up and be connected, RU can send notice signaling to HU, and RU can be even Connect and send notice signaling to HU when foundation finishes, or can also be after connection establishment finishes one section of duration Send notice signaling to HU again, RU can determine to HU transmission notice signaling according to actual conditions in a word Time, the invention is not limited in this regard.

In the embodiment of the present invention, the mode that RU sends notice signaling to HU includes but is not limited to：Can lead to Cross PUCCH (Physical Uplink Control Channel, Physical Uplink Control Channel) to send, or Can be sent by PUSCH (Physical Uplink Shared Channel, Physical Uplink Shared Channel), Or implicit instruction can be carried out by other ascending physical signal signals, such as by DMRS (Demodulation Reference Signal, demodulated reference signal) or SRS (Sounding Reference Signal, channel Detection reference signal) etc. carry out implicit instruction, or implicit expression is carried out by the high-level signaling that RU issues HU Instruction, etc..

In the embodiment of the present invention, notice signaling for example can serve to indicate that whether HU sends control signal.

Optionally, in the embodiment of the present invention, if notice signaling Deictic Center node sends control signal, lead to Know that signaling may be used to indicate that Centroid sends the mode of control signal to distant-end node, such as one kind can Can mode be：Send control signal to distant-end node after the triggering signaling receiving distant-end node.

That is, notice signaling, except being in addition to HU will send control signal, also can indicate that transmission control The mode of signal processed, so, RU can receive control signal in the way of selecting to be suitable for oneself, and RU's is autonomous Property stronger, also more can receive control signal when suitable, improve the utilization rate of control signal, reduce Information redundancy.

For example, notice signaling can indicate HU, sends to RU when receiving the triggering signaling of RU again Control signal, that is, instruction HU, when being not received by the triggering signaling of RU, send out without to RU Send control signal.So, RU can send triggering signaling when needing to receive control signal to HU, and The control signal that also will not receive redundancy during control signal need not be received, decrease the useless letter of RU reception The information content of breath, decreases the number of times that HU sends control signal, mitigates the burden of HU, saves transmission Resource.

Or, notice signaling can indicate HU, periodically sends control signal to RU, and the cycle of transmission can With more than the transmission cycle of the prior art.For example, in prior art, set up in HU and RU and initially connect After connecing, HU sends PSS/BSS and PBCH according to the period 1 to RU automatically, then the present invention is real Apply in example, after HU and RU set up and be connected, RU can indicate HU, according to second round to RU Send control signal, second round is more than the period 1 that is to say, that in the embodiment of the present invention, HU sends out The number of times sending control signal has reduced, and saves transfer resource.

Optionally, in the embodiment of the present invention, after Centroid and distant-end node are set up and are connected, described in After heart node receives the notice signaling that described distant-end node sends, also include：

If notice signaling Deictic Center node sends control signal, Centroid is according to communication protocol or predetermined Rule, determine to distant-end node send control signal mode be receive distant-end node triggering signaling after to Distant-end node sends control signal.

That is, if notice signaling Deictic Center node sends control signal, Centroid can pass through three kinds Mode sends the mode of control signal to determine to distant-end node.

The first, notice signaling can further indicate that Centroid sends the side of control signal to distant-end node Formula, Centroid can be obtained by notice signaling.As above have been introduced, seldom repeat.

Second, communication protocol can specify that Centroid sends the mode of control signal to distant-end node, in Heart node can be in the way of directly determining according to the regulation of communication protocol and sending control signal to distant-end node.Example As communication protocol controls letter it can be stated that HU sends to RU when receiving the triggering signaling of RU again Number, or, communication protocol it can be stated that HU periodicity to RU send control signal, etc..

The third, Centroid and distant-end node can appoint that Centroid sends control to distant-end node in advance Signal processed mode (can by by Centroid and distant-end node can to appoint in advance in the way of referred to as pre- establish rules Then), Centroid can be in the way of directly determining according to pre-defined rule and sending control signal to distant-end node. For example, pre-defined rule is it can be stated that HU sends control to RU again when receiving the triggering signaling of RU Signal, or, pre-defined rule it can be stated that HU periodicity to RU send control signal, etc..

Optionally, in the embodiment of the present invention, before step 301, Centroid first has to and distant-end node Set up and connect.Centroid is set up with distant-end node and is connected, and a kind of possible mode can be：

Centroid sends a control signal to distant-end node, or Centroid continuously sends to distant-end node Multiple control signal, control signal is used for distant-end node and is connected with Centroid foundation；

Centroid is set up based on the one or more control signals sending with distant-end node and is connected.

That is, during HU and RU sets up and connect, can have two kinds of implementations, mode A With mode B.

Mode A, when HU does not also set up with RU and connects, HU periodically sends control signal, sends out every time Send a control signal, such as control signal includes PBCH and/or PSCH, the transmission cycle now is permissible Equal to the transmission cycle of the prior art, or the transmission cycle of the prior art can also be not equal to.

RU specifies according to communication protocol or RU and HU appoints in advance time-domain resource and frequency domain resource detection PBCH and/or PSCH, obtain cell ID and initial timing information, initial frequency deviation information and other be System information etc., RU is set up with HU according to the information obtaining and is connected, and then RU will set up the correlation of successful connection Feedback of the information is to HU.RU sends notice signaling to HU, can be to set up successful connection to HU feedback Individually send after information, or can send in the lump when setting up the information of successful connection to HU feedback, example As can be individually sent, or it is considered that set up the letter carrying in notice signaling in the information of successful connection Breath.HU after receiving notice signaling, by the emission mode of control signal from periodic transmission pattern switching Trigger pattern for RU, i.e. no longer periodically send control signal, but receive the triggering of RU transmission Control signal is retransmited during signaling.

Mode B, when HU does not also set up with RU and connects, it is (prominent that HU periodically sends control signal burst Send out pulse), send burst, may refer to once send multiple control signal, and each control signal is wrapped The information including is probably identical.Such as control signal includes PBCH and/or PSCH, and transmission now is all Phase can be equal to the transmission cycle of the prior art, or can also be not equal to transmission week of the prior art Phase.

RU specifies according to communication protocol or RU and HU appoints in advance time-domain resource and frequency domain resource detection PSCH, obtains cell ID and initial timing information, initial frequency deviation information and other system information etc., RU is set up with HU according to the information obtaining and is connected, and then the relevant information setting up successful connection is fed back to by RU HU.RU sends notice signaling to HU, can be independent after the information setting up successful connection to HU feedback Send, or can send in the lump when setting up the information of successful connection to HU feedback, for example can be independent Send, or it is considered that set up the information carrying in notice signaling in the information of successful connection.HU exists After receiving notice signaling, the emission mode of control signal is triggered for RU from periodic transmission pattern switching Pattern, i.e. no longer periodically send control signal, but when receiving the triggering signaling of RU transmission again Send control signal.

Below two kinds of possible modes setting up connection, in the embodiment of the present invention, Centroid are simply listed To set up with any one that distant-end node can also be not limited by both the above mode and to be connected, for example, also may be used By by prior art other possible in the way of setting up connection, the present invention is not restricted.

Optionally, in the embodiment of the present invention, after distant-end node sends notice signaling to Centroid, also Including：

Distant-end node receives the radio frames that remote Centroid sends；Wherein, in radio frames for carrying The primary importance stating control signal carries data message, and primary importance is the position being originally used for carrying control signal Put；Notice signaling Deictic Center node sends control signal, and Centroid does not receive distant-end node and sends Triggering signaling, or, notice signaling Deictic Center node does not send control signal.

That is, Centroid still normally can send radio frames to distant-end node, simply in prior art, every All carry PBCH and PSCH in individual radio frames, and after adopting the technical scheme of the embodiment of the present invention, have one Control signal is not carried, for example, if notice signaling Deictic Center node sends controls letter in a little radio frames Number, and Centroid does not receive the triggering signaling of distant-end node transmission, or, notice signaling Deictic Center section Point does not send control signal, then in these cases, Centroid if desired sends radio frames to distant-end node, Control signal just can not be carried in these radio frames.For example, control signal script in radio frames is occupied Position be referred to as primary importance, then, when need not carrying control signal, primary importance just can be used In carrying other information, for example, can carry data message, so can increase radio frames and be caned The data volume of the data message of transmission, reduces the quantity of the radio frames sending, and reduces overhead, improves letter Breath efficiency of transmission.

Step 302：If notice signaling Deictic Center node sends control signal, Centroid is according to notice The instruction of signaling, sends control signal to distant-end node after receiving the triggering signaling of distant-end node.

In the embodiment of the present invention, Centroid can determine to distant-end node transmission according to the instruction of notice signaling The mode of control signal, or can be determined to distant-end node transmission control signal according to the regulation of communication protocol Mode, or can by determined according to pre-defined rule to distant-end node send control signal in the way of, in step Have been described in 301.

HU is when receiving the notice signaling of RU transmission, if notice signaling instruction HU sends control signal, The sending mode of control signal is for example adjusted to RU triggering pattern by HU, that is, in the triggering receiving RU transmission The pattern of control signal is sent, if notice signaling instruction HU does not send control signal, HU is for example after signaling The sending mode of control signal is adjusted to and forbids sending mode, do not send the pattern of control signal.

If notice signaling instruction HU sends control signal, when not receiving the triggering signaling of RU transmission, HU typically will not send control signal to RU and (certainly, if control signal changes, may go back It is actively to be sent to RU), if HU receives the triggering signaling of RU transmission, then HU can be to RU Send control signal.

Optionally, in the embodiment of the present invention, Centroid sends control signal to distant-end node, including：

Centroid according to the instruction of notice signaling, after receiving the triggering signaling of distant-end node, to far-end Node sends a control signal；Or

Centroid according to the instruction of notice signaling, after receiving the triggering signaling of distant-end node, continuously to Distant-end node sends multiple control signal (sending control signal burst).

Optionally, in the embodiment of the present invention, multiple described control signals are sent continuous to described distant-end node Before, also include：

The quantity of the control signal being continuously transmitted according to communication protocol or pre-defined rule determination；Or

The quantity of the control signal continuously transmitting is determined according to the instruction of described notice signaling.

If Centroid determines, according to the instruction of notice signaling, the mode sending control signal to distant-end node, Then, in notice signaling in addition to how instruction HU adjusts the emission mode of emissioning controling signal, acceptable Instruction HU is to send a control signal or send control signal burst every time.And, if it is indicated that HU Send control signal burst every time, then also can indicate that and specifically send how many control signals every time, for example, refer to Show three control signals of each transmission.The independence of RU is stronger, is more beneficial for RU according to the suitable side of itself Formula obtains required information.

Or, if Centroid determines, according to pre-defined rule, the mode sending control signal to distant-end node, Then pre-defined rule, in addition to how instruction HU adjusts the emission mode of emissioning controling signal, also can indicate that HU is to send a control signal or send control signal burst every time.And, if it is indicated that HU is each Send control signal burst, then also can indicate that and specifically send how many control signals every time.

Or, if Centroid determines, according to pre-defined rule, the mode sending control signal to distant-end node, Then pre-defined rule, in addition to how instruction HU adjusts the emission mode of emissioning controling signal, also can indicate that HU is to send a control signal or send control signal burst every time.And, if it is indicated that HU is each Send control signal burst, then also can indicate that and specifically send how many control signals every time.

Or, if Centroid determines according to the regulation of pre-defined rule or communication protocol sent to distant-end node The mode of control signal, and transmission control signal every time is determined according to the regulation of pre-defined rule or communication protocol Burst, then can also be determined by notice signaling and specifically send how many control signals every time.

Optionally, in the embodiment of the present invention, after Centroid receives the notice signaling that distant-end node sends, Also include：

When control signal changes, the time domain money that Centroid determines according to communication protocol or pre-defined rule Source and frequency domain resource, send the control signal after a change to distant-end node；Or

When control signal changes, the time domain money that Centroid determines according to communication protocol or pre-defined rule Source and frequency domain resource, continuously send the control signal after multiple changes to distant-end node.

Even if Centroid determines, and the sending mode of control signal is adjusted to RU triggering pattern, and is controlling When signal changes, or need actively to send the situation of control signal to distant-end node some other Under, Centroid still actively can send control signal to distant-end node.For example, by the control changing Signal processed be referred to as change after control signal, then, HU send when, can send one change after Control signal, or (the i.e. control after transmission change of the control signal after multiple changes can also be continuously transmitted Signal burst).

The pre-defined rule that communication protocol or Centroid and distant-end node are arranged in advance can specify that accordingly Time-domain resource and frequency domain resource, so need actively to send control signal (example to distant-end node in Centroid As change after control signal) when can by regulation time-domain resource and frequency domain resource send, keep away as far as possible Exempt from the situation that can't detect occurs in distant-end node, improve the success rate that information receives.

When control signal changes, or need actively to send control signal to RU some other In the case of, HU still actively can send control signal to RU, this mechanism it is ensured that RU can and When know the control signal changing.

Refer to Fig. 4, based on same inventive concept, the embodiment of the present invention provides a kind of message receiving method, The flow process of methods described is described as follows, and in citing, continuing with distant-end node is RU, and Centroid is HU As a example.

Step 401：After distant-end node and Centroid are set up and be connected, distant-end node is sent out to Centroid Send notice signaling, whether notice signaling sends control signal for Deictic Center node.

Control signal includes PBCH and/or PSCH.

Before step 401, RU is first had to be set up with HU and is connected.

Optionally, in the embodiment of the present invention, distant-end node is set up with Centroid and is connected, including：

Distant-end node receives the control signal that Centroid sends, or distant-end node receives Centroid even The multiple control signal (receiving control signal burst) that supervention send；

Distant-end node, according to the control signal receiving or multiple control signal, is set up even with Centroid Connect.

Before a connection is established, the mode that HU sends control signal to RU, has been situated between in Fig. 1 flow process Continue.

Optionally, in the embodiment of the present invention, distant-end node according to receive multiple control signal, with centromere Point is set up and is connected, including：

Distant-end node merges the multiple control signal receiving, and obtains master control signal；

Distant-end node is set up with Centroid according to described master control signal and is connected.

That is, before HU and RU sets up and connect, if what HU sent to RU is control signal burst, Continuously transmit multiple control signal, then the multiple control signal of acceptance can be merged by RU, obtains To master control signal, diversity gain so can be improved.The master control signal that RU can obtain according to merging Set up with HU and be connected.Wherein although RU have received multiple control signal, but multiple control signal is taken The information of band is probably identical, then, multiple control signal is merged by RU, obtains master control letter Number, RU can obtain for setting up the information connecting from master control signal, obtains from master control signal Information it is also possible to follow that the information obtaining in single control signal is identical, and not representing is all control The complete or collected works of the information that signal includes.

Or, HU and RU can also set up connection by way of other are possible, and the present invention is not restricted.

Optionally, in the embodiment of the present invention, after distant-end node sends notice signaling to Centroid, also Including：

Distant-end node receives the radio frames that remote Centroid sends；Wherein, the primary importance in radio frames carries Data message, primary importance is the position being originally used for carrying control signal；Notice signaling Deictic Center node Send control signal, and Centroid does not receive the triggering signaling of distant-end node transmission, or, notice signaling Deictic Center node does not send control signal.

Optionally, in the embodiment of the present invention, after distant-end node and Centroid are set up and are connected, far-end section After point sends notice signaling to Centroid, also include：

If notice signaling Deictic Center node sends control signal, distant-end node is according to communication protocol or pre- set pattern Then, determine that the mode receiving control signal is after sending triggering signaling to Centroid, receive distant-end node The control signal sending.

Optionally, in the embodiment of the present invention, if notice signaling Deictic Center node sends control signal, lead to Knowing that signaling is additionally operable to Deictic Center node to the mode of distant-end node transmission control signal is to receive far-end section Control signal is sent to distant-end node after the triggering signaling of point.

That is, Centroid can according to the instruction of notice signaling, the regulation of communication protocol or with distant-end node thing The pre-defined rule first arranged sends the mode of control signal to determine to distant-end node, and the present invention does not limit to this System.

With regard to this partial content, have been introduced in Fig. 3 flow process, seldom repeat herein.

Optionally, in the embodiment of the present invention, after distant-end node sends notice signaling to Centroid, also Including：

Time-domain resource and frequency domain resource that distant-end node determines according to communication protocol or pre-defined rule, receive center Control signal after the change that node sends；Or

Time-domain resource and frequency domain resource that distant-end node determines according to communication protocol or pre-defined rule, continuous receive Control signal after multiple changes that Centroid sends.

That is, if control signal there occurs change, HU still can be actively by the control signal after change It is sent to RU.When sending, can select to send a control signal, or can also continuously transmit many Individual control signal.

Step 402：The instruction of distant-end node signaling as per advice, receives distant-end node in Centroid and sends out During the triggering signaling sent, receive the control signal that Centroid sends.

RU sends after notice signaling to HU, if notice signaling instruction HU does not send control signal, HU Typically control signal will not be sent out to RU, if notice signaling instruction HU sends control signal, HU is not having Receive RU triggering signaling when, typically actively will not send control signal to RU.So, RU exists Need receive control signal when, can to HU send triggering signaling, HU be connected to triggering signaling when, just Control signal can be sent to RU.

In the embodiment of the present invention, RU needs to receive the situation of control signal, including but not limited to：RU asks Change transmitting antenna number, RU request change transmission mode, RU Timing measurement to avoid or to correct step-out Needs, the needs of RU frequency deviation measurement, at least one when waiting.

Optionally, in the embodiment of the present invention, after sending triggering signaling to Centroid, receive Centroid The control signal sending, including：

After sending triggering signaling to Centroid, receive the control signal that Centroid sends；Or

After sending triggering signaling to Centroid, the continuous multiple control signal receiving Centroid transmission.

That is, HU is to think that RU sends control signal according to the mode that determination sends control signal to RU, So, after RU sends triggering signaling to HU, RU may receive a control of HU transmission Signal or continuous multiple control signal (what i.e. HU sent is control signal burst).

Optionally, in the embodiment of the present invention, after the continuous multiple control signal receiving Centroid transmission, Also include：

Distant-end node merges the plurality of control signal receiving, and obtains master control signal；

Distant-end node obtains, according to master control signal, system control information or the synchronous letter that Centroid sends Breath etc..

That is, if what RU received is a control signal, RU can directly obtain according to this control signal The information taking HU to send, for example, can include system control information or synchronizing information etc., specifically, if Control signal includes PBCH and/or PSCH, then RU just can accordingly obtain PBCH carrying information and / or PSCH carry information.

And if RU reception is continuous multiple control signal, and the content that each control signal is carried May be all identical, continuously transmitting is repeatedly to improve system reliability, avoid information to lose as far as possible. Then the multiple control signal of acceptance can be merged by RU, obtains master control signal, so can improve Diversity gain.Wherein although RU have received multiple control signal, but the letter entrained by multiple control signal Breath is probably identical, then, multiple control signal is merged by RU, obtains master control signal, from The information that obtains in master control signal is it is also possible to follow the information obtaining in single control signal identical, and simultaneously Not representing is the complete or collected works of the information that all control signals include.

In the embodiment of the present invention, Fig. 4 flow process is the flow process corresponding with Fig. 3 flow process, and content can mutually reference.

In addition, in the embodiment of the present invention, the numbering of step simply provides a kind of possible example it is impossible to be used for Limit the execution sequence of step, in actual applications, each step can execute according to arbitrarily possible order.

Some technique effects of the embodiment of the present invention are analyzed as follows：

1st, decrease the traffic volume of control signal, it is possible to decrease overhead, the biography of lifting wireless backhaul system Movement Capabilities.

Assume to send N number of radio frames altogether, wherein have in M radio frames and do not include PSS/SSS and PBCH, N It is the integer more than or equal to 2, M is the positive integer less than or equal to N.If the modulation methods of wireless backhaul scene Formula is 256QAM (Quadrature Amplitude Modulation, quadrature amplitude modulation), code rate Data flow for 0.9, MIMO (Multiple-Input Multiple-Output, multiple-input and multiple-output) system Quantity be 6.In each radio frames, PSS and SSS respectively accounts for 10 RB (Resource Block, resources Block), PBCH occupy 3 OFDM (Orthogonal Frequency Division Multiplexing, orthogonal Frequency division multiplexing) center position in symbol 25 RB, then the resource that each radio frames average are saved opens Sell and be：

Wherein formula (1) is not send the overhead saved during PSS and SSS, and formula (2) is not send out Send the overhead saved during PBCH.

2nd, because the control signal sending reduces, the emitter of HU side and the receiver of RU side are reduced Process complexity, reduce the resource consumption of base band.

3rd, advantageously reduce the PAPR of the emitter of HU side.

Refer to Fig. 5 A, in the prior art, through DFT (Discrete Fourier Transform, from Scattered Fourier transformation) process after RB at the position because PSS/SSS and PBCH typically plies in the centre (figure Shown in the oblique line portion of 5A), lead to PDSCH can only occupy discrete RB resource (horizontal line portion of Fig. 5 A Shown in point), then under SC-FDMA modulation system, increased the PAPR of emitter.And refer to Fig. 5 B, After the technical scheme being proposed using the embodiment of the present invention, when not sending these control signals, PDSCH is Map to (horizontal line of Fig. 5 B is partly shown) in continuous subcarrier, the time-domain signal envelope now transmitting Meet single-carrier property, it is hereby achieved that relatively low PAPR.

Introduce the equipment in the embodiment of the present invention below in conjunction with accompanying drawing.

Refer to Fig. 6, based on same inventive concept, the embodiment of the present invention provides a kind of Centroid, described Centroid can include receiver module 601 and sending module 602.

Receiver module 601, after setting up and be connected in Centroid and distant-end node, receives distant-end node The notice signaling sending, whether notice signaling sends control signal for Deictic Center node；

Sending module 602, if send control signal, center for the described Centroid of notice signaling instruction Node, according to the instruction of notice signaling, sends control to distant-end node after receiving the triggering signaling of distant-end node Signal processed.

Optionally, in the embodiment of the present invention, control signal includes PBCH and/or PSCH.

Optionally, in the embodiment of the present invention, sending module 602 is additionally operable to：

After receiver module 601 receives the notice signaling that distant-end node sends, send wireless to distant-end node Frame；Wherein, the primary importance in radio frames carries data message, and primary importance is to be originally used for carrying control The position of signal；Notice signaling Deictic Center node sends control signal, and Centroid does not receive far-end The triggering signaling that node sends, or, notice signaling Deictic Center node does not send control signal.

Optionally, in the embodiment of the present invention, Centroid also includes determining module, is used for：

After receiver module 601 receives the notice signaling that distant-end node sends, if notice signaling Deictic Center Node sends control signal, then according to communication protocol or pre-defined rule, determine to send to control to distant-end node and believe Number mode be receive distant-end node triggering signaling after to distant-end node send control signal.

Optionally, in the embodiment of the present invention, if notice signaling Deictic Center node sends control signal, lead to Knowing that signaling is additionally operable to Deictic Center node to the mode of distant-end node transmission control signal is to receive far-end section Control signal is sent to distant-end node after the triggering signaling of point.

Optionally, in the embodiment of the present invention, sending module 602 is used for：

After receiver module 601 receives the triggering signaling of distant-end node, send a control to distant-end node Signal；Or

After receiver module 601 receives the triggering signaling of distant-end node, continuously send multiple to distant-end node Control signal.

Optionally, in the embodiment of the present invention, determining module is used for：

Sending module 602 is continuous send multiple control signal to distant-end node before, according to communication protocol or The quantity of the control signal that pre-defined rule determination continuously transmits；Or

Before the continuous transmission multiple control signal to distant-end node of sending module 602, according to notice signaling Indicate the quantity determining the control signal continuously transmitting.

Optionally, in the embodiment of the present invention, sending module 602 is additionally operable to：

When control signal changes, according to time-domain resource and the frequency domain of communication protocol or pre-defined rule determination Resource, sends the control signal after a change to distant-end node；Or

When control signal changes, according to time-domain resource and the frequency domain of communication protocol or pre-defined rule determination Resource, continuously sends the control signal after multiple changes to distant-end node.

Refer to Fig. 7, based on same inventive concept, the embodiment of the present invention provides a kind of distant-end node, described Distant-end node can include sending module 701 and receiver module 702.

Sending module 701, after setting up and be connected in distant-end node and Centroid, sends out to Centroid Send notice signaling, whether notice signaling sends control signal for Deictic Center node；

Receiver module 702, if send control signal for notice signaling Deictic Center node, as per advice The instruction of signaling, after sending module 701 sends triggering signaling to Centroid, receives Centroid and sends Control signal.

Optionally, in the embodiment of the present invention, control signal includes PBCH and/or PSCH.

Optionally, in the embodiment of the present invention, receiver module 702 is additionally operable to：

After sending module 701 sends notice signaling to described Centroid, receive what Centroid sent Radio frames；Wherein, the primary importance in radio frames carries data message, and primary importance is to be originally used for carrying The position of control signal；The described Centroid of notice signaling instruction sends control signal, and Centroid does not connect Receive the triggering signaling of distant-end node transmission, or, notice signaling Deictic Center node does not send control signal.

Optionally, in the embodiment of the present invention, distant-end node also includes determining module, is used for：

After sending module 701 sends notice signaling to Centroid, if notice signaling Deictic Center node Send control signal, according to communication protocol or pre-defined rule, determine the mode receiving control signal be in After heart node sends triggering signaling, receive the control signal that Centroid sends.

Optionally, in the embodiment of the present invention, if notice signaling Deictic Center node sends control signal, lead to Knowing that signaling is additionally operable to Deictic Center node to the mode of distant-end node transmission control signal is to receive far-end section Control signal is sent to distant-end node after the triggering signaling of point.

Optionally, in the embodiment of the present invention, receiver module 702 is used for：

After sending module 701 sends triggering signaling to Centroid, receive the control that Centroid sends Signal processed；Or

After sending module 701 sends triggering signaling to Centroid, it is many that continuous reception Centroid sends Individual control signal.

Optionally, in the embodiment of the present invention, distant-end node also includes merging module and acquisition module；

Merge module, after continuously receiving, in receiver module, the multiple control signal that Centroid sends, Merge the plurality of control signal receiving, obtain master control signal；

Acquisition module, for the system control information according to the acquisition Centroid transmission of master control signal or together Step information.

Optionally, in the embodiment of the present invention, receiver module 702 is additionally operable to：

After sending module 701 sends notice signaling to Centroid, according to communication protocol or pre-defined rule The time-domain resource determining and frequency domain resource, receive the control signal after the change that Centroid sends；Or

After sending module 701 sends notice signaling to Centroid, according to communication protocol or pre-defined rule The time-domain resource determining and frequency domain resource, the control letter after multiple changes that continuous reception Centroid sends Number.

Optionally, in the embodiment of the present invention, notice signaling is additionally operable to the control that Deictic Center node continuously transmits The quantity of signal.

Refer to Fig. 8, based on same inventive concept, the embodiment of the present invention also provides a kind of Centroid, institute State Centroid and can include memory 801, processor 802, receiver 803 and transmitter 804.Wherein, Memory 801, receiver 803 and transmitter 804 are connected with processor 802 respectively, for example, can be point Connecting line that Tong Guo be not different connects, or can also all pass through same bus or the connection of different buses, Etc., the specific connected mode present invention is not restricted.Receiver 803 and transmitter 804, permissible It is two separate hardware modules, or can also be two kinds of functions in a hardware module, if Receiver 803 and transmitter 804 are physically located in same hardware module, then this hardware module is for example permissible Referred to as transceiver.

Memory 801, executes the instruction of required by task for storing processor 802；

Receiver 803, after setting up and be connected in Centroid and distant-end node, receives distant-end node and sends out The notice signaling sent, whether notice signaling sends control signal for Deictic Center node；

Processor 802, for executing the instruction of memory 801 storage, if notice signaling Deictic Center node Send control signal, the then instruction according to notice signaling, after receiving the triggering signaling of distant-end node, lead to Cross transmitter 804 and send control signal to distant-end node.

Optionally, in the embodiment of the present invention, control signal includes PBCH and/or PSCH.

Optionally, in the embodiment of the present invention, transmitter 804 is additionally operable to：

After receiver 803 receives the notice signaling that distant-end node sends, send radio frames to distant-end node； Wherein, the primary importance in radio frames carries data message, and primary importance is to be originally used for carrying control signal Position；Notice signaling Deictic Center node sends control signal, and Centroid does not receive distant-end node The triggering signaling sending, or, notice signaling Deictic Center node does not send control signal.

Optionally, in the embodiment of the present invention, processor 802 is additionally operable to：

After receiver 803 receives the notice signaling that distant-end node sends, if notice signaling Deictic Center section Point sends control signal, then according to communication protocol or pre-defined rule, determine and send control signal to distant-end node Mode be receive distant-end node triggering signaling after to distant-end node send control signal.

Optionally, in the embodiment of the present invention, if notice signaling Deictic Center node sends control signal, lead to Knowing that signaling is additionally operable to Deictic Center node to the mode of distant-end node transmission control signal is to receive far-end section Control signal is sent to distant-end node after the triggering signaling of point.

Optionally, in the embodiment of the present invention, processor 802 is used for：

After receiver 803 receives the triggering signaling of described distant-end node, by transmitter 804 to far-end Node sends a control signal；Or

After receiver 803 receives the triggering signaling of described distant-end node, by transmitter 804 continuous to Distant-end node sends multiple control signal.

Optionally, in the embodiment of the present invention, processor 802 is additionally operable to：

Before sending multiple control signal by transmitter 804 is continuous to distant-end node, according to communication protocol Or pre-defined rule determines the quantity of the control signal continuously transmitting；Or

Before sending multiple control signal by transmitter 804 is continuous to distant-end node, according to notice signaling Instruction determine the quantity of control signal continuously transmitting.

Optionally, in the embodiment of the present invention, processor 802 is additionally operable to：

When control signal changes, according to time-domain resource and the frequency domain of communication protocol or pre-defined rule determination Resource, sends the control signal after a change by transmitter 804 to distant-end node；Or

When control signal changes, according to time-domain resource and the frequency domain of communication protocol or pre-defined rule determination Resource, the control signal after the continuous multiple change to distant-end node transmission of transmitter 804.

Refer to Fig. 9, based on same inventive concept, the present invention also provides a kind of distant-end node, described far-end Node can include memory 901, processor 902, receiver 903 and transmitter 904.Wherein, store Device 901, receiver 903 and transmitter 904 are connected with processor 902 respectively, for example, can be to lead to respectively Cross different connecting lines to connect, or can also all pass through same bus or the connection of different buses, etc., The specific connected mode present invention is not restricted.Receiver 903 and transmitter 904, can be two Separate hardware module, or can also be two kinds of functions in a hardware module, if receiver 903 and transmitter 904 be physically located in same hardware module, then this hardware module for example be properly termed as receive Send out device.

Memory 901, executes the instruction of required by task for storing processor 802；

Processor 902, for executing the instruction of memory 901 storage, is built with Centroid in distant-end node After vertical connection, notice signaling is sent to Centroid by transmitter 904, notice signaling is used in instruction Whether heart node sends control signal；

Receiver 903, if sending control signal for notice signaling Deictic Center node, distant-end node is pressed The instruction of signaling as per advice, after processor 902 sends triggering signaling by transmitter 904 to Centroid, Receive the control signal that Centroid sends.

Optionally, in the embodiment of the present invention, control signal includes PBCH and/or PSCH.

Optionally, in the embodiment of the present invention, receiver 903 is additionally operable to：

After processor 902 sends notice signaling by transmitter 904 to Centroid, receive centromere The radio frames that point sends；Wherein, the primary importance in radio frames carries data message, and primary importance is originally For carrying the position of control signal；Notice signaling Deictic Center node sends control signal, and Centroid Do not receive the triggering signaling of distant-end node transmission, or, notice signaling Deictic Center node does not send control letter Number.

Optionally, in the embodiment of the present invention, processor 902 is additionally operable to：

After notice signaling is sent to described Centroid by transmitter 904, if in notice signaling instruction Heart node sends control signal, according to communication protocol or pre-defined rule, determines that the mode receiving control signal is After sending triggering signaling to Centroid, receive the control signal that Centroid sends.

Optionally, in the embodiment of the present invention, if notice signaling Deictic Center node sends control signal, lead to Knowing that signaling is additionally operable to Deictic Center node to the mode of distant-end node transmission control signal is to receive far-end section Control signal is sent to distant-end node after the triggering signaling of point.

Optionally, in the embodiment of the present invention, receiver 903 is used for：

After processor 902 sends triggering signaling by transmitter 904 to described Centroid, receive center The control signal that node sends；Or

After processor 902 sends triggering signaling by transmitter 904 to Centroid, continuously receive center The multiple control signal that node sends.

Optionally, in the embodiment of the present invention, processor 902 is additionally operable to：

After receiver 903 continuously receives the multiple control signal of Centroid transmission, merge the many of reception Individual control signal, obtains master control signal；

System control information or the synchronizing information that Centroid sends is obtained according to master control signal.

Optionally, in the embodiment of the present invention, receiver 903 is additionally operable to：

After processor 902 sends notice signaling by transmitter 904 to Centroid, according to communication protocols The time-domain resource of view or pre-defined rule determination and frequency domain resource, after receiving the change that Centroid sends Control signal；Or

After processor 902 sends notice signaling by transmitter 904 to Centroid, according to communication protocols The time-domain resource of view or pre-defined rule determination and frequency domain resource, the continuous multiple changes receiving Centroid transmission Control signal afterwards.

Optionally, in the embodiment of the present invention, notice signaling is additionally operable to the control that Deictic Center node continuously transmits The quantity of signal.

In the embodiment of the present invention, after distant-end node and Centroid are set up and connected, distant-end node can lead to Know whether Centroid sends control signal to distant-end node, Centroid can be true according to the instruction of distant-end node Determine whether send control signal, if need not send, Centroid does not send control signal to distant-end node, If necessary to send, then Centroid can also be again to far-end section after receiving the triggering signaling of distant-end node Point sends control signal.So, persistently send control signal without Centroid, save the expense of system, Improve the spectrum efficiency of system.And, distant-end node can decide how to receive control signal in its sole discretion, can To receive control signal when needing again, improve the utilization rate to control signal, also avoid not needing The redundancy that control signal causes information is received when control signal.

And, in prior art, because control signal typically can occupy the center RB resource in radio frames, Lead to PDSCH can only occupy discrete RB resource at edge, under SC-FDMA modulation system, Increased the PAPR of emitter, and after adopting technical scheme provided in an embodiment of the present invention, do not send this During a little control signal, PDSCH maps to the time-domain signal bag in continuous subcarrier, now transmitting Network meets single-carrier property, it is hereby achieved that relatively low PAPR.

Those skilled in the art can be understood that, for convenience and simplicity of description, only with above-mentioned The division of each functional unit is illustrated, and in practical application, can divide above-mentioned functions as desired Join and completed by different functional units, the internal structure of device will be divided into different functional units, with complete Become all or part of function described above.The specific works mistake of the system, apparatus, and unit of foregoing description Journey, may be referred to the corresponding process in preceding method embodiment, will not be described here.

It should be understood that disclosed system, device and side in several embodiments provided herein Method, can realize by another way.For example, device embodiment described above is only schematically , for example, the division of described unit or unit, only a kind of division of logic function, actual can when realizing There to be other dividing mode, for example multiple units or assembly can in conjunction with or be desirably integrated into another and be Unite, or some features can be ignored, or do not execute.Another, shown or discussed coupling each other Close or direct-coupling or communication connection can be by some interfaces, the INDIRECT COUPLING of device or unit or communication Connect, can be electrical, mechanical or other forms.

The described unit illustrating as separating component can be or may not be physically separate, as The part that unit shows can be or may not be physical location, you can with positioned at a place, or Can also be distributed on multiple NEs.Can select therein some or all of according to the actual needs Unit is realizing the purpose of this embodiment scheme.

In addition, can be integrated in a processing unit in each functional unit in each embodiment of the application, Can also be that unit is individually physically present it is also possible to two or more units are integrated in a unit In.Above-mentioned integrated unit both can be to be realized in the form of hardware, it would however also be possible to employ SFU software functional unit Form is realized.

If described integrated unit is realized and as independent production marketing using in the form of SFU software functional unit Or when using, can be stored in a computer read/write memory medium.Based on such understanding, this Shen Part that technical scheme please substantially contributes to prior art in other words or this technical scheme complete Portion or partly can be embodied in the form of software product, this computer software product is stored in a storage In medium, including some instructions with so that computer equipment (can be personal computer, server, Or network equipment etc.) or processor (processor) execute each embodiment methods described of the application complete Portion or part steps.And aforesaid storage medium includes：USB flash disk, portable hard drive, ROM (Read-Only Memory, read-only storage), RAM (Random Access Memory, random access memory), Magnetic disc or CD etc. are various can be with the medium of store program codes.

The above, above example only in order to be described in detail to the technical scheme of the application, but with The explanation of upper embodiment is only intended to help and understands the method for the present invention and its core concept, and it is right to should not be construed as The restriction of the present invention.Those skilled in the art the invention discloses technical scope in, can think easily The change or replacement arrived, all should be included within the scope of the present invention.

Claims (34)

1. a kind of control signal sending method is it is characterised in that include：

After Centroid and distant-end node are set up and be connected, described Centroid receives described distant-end node and sends out The notice signaling sent, described notice signaling is used for indicating whether described Centroid sends control signal；

If described notice signaling indicates that described Centroid sends described control signal, described Centroid root According to the instruction of described notice signaling, to described distant-end node after receiving the triggering signaling of described distant-end node Send described control signal.

2. the method for claim 1 is it is characterised in that described control signal includes physical broadcast Channel PBCH and/or Physical Synchronisation Channel PSCH.

3. method as claimed in claim 1 or 2 is it is characterised in that receive institute in described Centroid After stating the notice signaling of distant-end node transmission, also include：

Described Centroid sends radio frames to described distant-end node；Wherein, being used in described radio frames The primary importance carrying described control signal carries data message；Described notice signaling indicates described Centroid Send described control signal, and described Centroid does not receive the described triggering letter that described distant-end node sends Order, or, described notice signaling indicates that described Centroid does not send described control signal.

4. described method as arbitrary in claim 1-3 is it is characterised in that receive in described Centroid After the notice signaling that described distant-end node sends, also include：

If described notice signaling indicates that described Centroid sends described control signal, described Centroid root According to communication protocol or pre-defined rule, determine that to the mode of the described distant-end node described control signal of transmission be to connect Described control signal is sent to described distant-end node after receiving the triggering signaling of described distant-end node.

If 5. described method as arbitrary in claim 1-3 is it is characterised in that described notice signaling indicates Described Centroid sends described control signal, then described notice signaling be additionally operable to indicate described Centroid to The mode that described distant-end node sends described control signal is after the triggering signaling receiving described distant-end node Send described control signal to described distant-end node.

6. described method as arbitrary in claim 1-5 is it is characterised in that receiving described far-end section Described control signal is sent to described distant-end node after the triggering signaling of point, including：

After receiving the triggering signaling of described distant-end node, send a described control to described distant-end node Signal；Or

After receiving the triggering signaling of described distant-end node, continuously send multiple described to described distant-end node Control signal.

7. method as claimed in claim 6 is it is characterised in that send to described distant-end node continuous Before multiple described control signals, also include：

The quantity of the control signal being continuously transmitted according to communication protocol or pre-defined rule determination；Or

The quantity of the control signal continuously transmitting is determined according to the instruction of described notice signaling.

8. described method as arbitrary in claim 1-7 is it is characterised in that also include：

When described control signal changes, described Centroid determines according to communication protocol or pre-defined rule Time-domain resource and frequency domain resource, to described distant-end node send one change after control signal；Or

When described control signal changes, described Centroid determines according to communication protocol or pre-defined rule Time-domain resource and frequency domain resource, continuously to described distant-end node send multiple change after control signal.

9. a kind of control signal method of reseptance is it is characterised in that include：

After distant-end node and Centroid are set up and be connected, described distant-end node sends to described Centroid Notice signaling, described notice signaling is used for indicating whether described Centroid sends control signal；

If described notice signaling indicates that described Centroid sends described control signal, described distant-end node is pressed According to the instruction of described notice signaling, after sending triggering signaling to described Centroid, receive described centromere The described control signal that point sends.

10. method as claimed in claim 9 is it is characterised in that described control signal includes physical broadcast Channel PBCH and/or Physical Shared Channel PSCH.

11. methods as described in claim 9 or 10 are it is characterised in that in described distant-end node to institute After stating Centroid transmission notice signaling, also include：

Described distant-end node receives the radio frames that described remote Centroid sends；Wherein, in described radio frames For carry described control signal primary importance carry data message；During described notice signaling instruction is described Heart node sends described control signal, and described Centroid does not receive the described of described distant-end node transmission Triggering signaling, or, described notice signaling indicates that described Centroid does not send described control signal.

12. such as claim 9-11 arbitrary described methods are it is characterised in that in described distant-end node to institute After stating Centroid transmission notice signaling, also include：

If notice signaling Deictic Center node sends control signal, described distant-end node is according to communication protocol or pre- Set pattern then, determines that the mode receiving described control signal is to be followed by described Centroid transmission triggering signaling Receive the described control signal that described Centroid sends.

If 13. such as claim 9-11 arbitrary described methods are it is characterised in that described notice signaling indicates Described Centroid sends described control signal, then described notice signaling be additionally operable to indicate described Centroid to The mode that described distant-end node sends described control signal is after the triggering signaling receiving described distant-end node Send described control signal to described distant-end node.

14. such as claim 9-13 arbitrary described methods are it is characterised in that to described Centroid After sending triggering signaling, receive the described control signal that described Centroid sends, including：

After sending triggering signaling to described Centroid, receive the described control that described Centroid sends Signal processed；Or

After sending triggering signaling to described Centroid, the continuous multiple institutes receiving described Centroid transmission State control signal.

15. methods as claimed in claim 14 are it is characterised in that receive described Centroid continuous After the multiple described control signal sending, also include：

Described distant-end node merges the plurality of control signal receiving, and obtains master control signal；

Described distant-end node obtains, according to described master control signal, the system control letter that described Centroid sends Breath or synchronizing information.

16. such as claim 9-15 arbitrary described methods it is characterised in that described distant-end node to After described Centroid sends notice signaling, also include：

Time-domain resource and frequency domain resource that described distant-end node determines according to communication protocol or pre-defined rule, receive Control signal after the change that described Centroid sends；Or

Time-domain resource and frequency domain resource that described distant-end node determines according to communication protocol or pre-defined rule, continuously Receive the control signal after multiple changes that described Centroid sends.

17. such as claim 9-16 arbitrary described methods are it is characterised in that described notice signaling is also used The quantity of the control signal continuously transmitting in the described Centroid of instruction.

A kind of 18. Centroids are it is characterised in that include：

Receiver module, after setting up and be connected in described Centroid and distant-end node, receives described far-end The notice signaling that node sends, described notice signaling is used for indicating whether described Centroid sends control letter Number；

Sending module, if sending described control signal for the described Centroid of described notice signaling instruction, Described Centroid, according to the instruction of described notice signaling, receives described distant-end node in described receiver module Triggering signaling after to described distant-end node send described control signal.

19. Centroids as claimed in claim 18 are it is characterised in that described control signal includes thing Reason broadcast channel PBCH and/or Physical Synchronisation Channel PSCH.

20. Centroids as described in claim 18 or 19 it is characterised in that described sending module also For：

After described receiver module receives the notice signaling that described distant-end node sends, to described distant-end node Send radio frames；Wherein, the primary importance for carrying described control signal in described radio frames carries Data message；Described notice signaling indicates that described Centroid sends described control signal, and described centromere Point does not receive the described triggering signaling that described distant-end node sends, or, during the instruction of described notice signaling is described Heart node does not send described control signal.

21. such as claim 18-20 arbitrary described Centroids are it is characterised in that described Centroid Also include determining module, be used for：

After described receiver module receives the notice signaling that described distant-end node sends, if described notice signaling Indicate that described Centroid sends described control signal, then according to communication protocol or pre-defined rule, determine to institute State distant-end node send described control signal mode be receive described distant-end node triggering signaling after to Described distant-end node sends described control signal.

If 22. such as claim 18-20 arbitrary described Centroids are it is characterised in that described notify letter The described Centroid of order instruction sends described control signal, then described notice signaling is additionally operable to indicate described center The mode that node sends described control signal to described distant-end node is in the triggering receiving described distant-end node Described control signal is sent to described distant-end node after signaling.

23. such as claim 18-22 arbitrary described Centroids are it is characterised in that described sending module For：

After described receiver module receives the triggering signaling of described distant-end node, send to described distant-end node One described control signal；Or

After described receiver module receives the triggering signaling of described distant-end node, continuously to described distant-end node Send multiple described control signals.

24. Centroids as claimed in claim 23 are it is characterised in that described Centroid also includes Determining module, is used for：

Before described sending module continuously sends multiple described control signals to described distant-end node, according to logical Believe that agreement or pre-defined rule determine the quantity of the control signal continuously transmitting；Or

Before described sending module continuously sends multiple described control signals to described distant-end node, according to institute The instruction stating notice signaling determines the quantity of the control signal continuously transmitting.

25. such as claim 18-24 arbitrary described Centroids are it is characterised in that described sending module It is additionally operable to：

When described control signal changes, the time-domain resource that determines according to communication protocol or pre-defined rule and Frequency domain resource, sends the control signal after a change to described distant-end node；Or

When described control signal changes, the time-domain resource that determines according to communication protocol or pre-defined rule and Frequency domain resource, continuously sends the control signal after multiple changes to described distant-end node.

A kind of 26. distant-end nodes are it is characterised in that include：

Sending module, after setting up and be connected in described distant-end node and Centroid, to described centromere Point sends notice signaling, and described notice signaling is used for indicating whether described Centroid sends control signal；

Receiver module, if sending described control signal for the described Centroid of described notice signaling instruction, According to the instruction of described notice signaling, after described sending module sends triggering signaling to described Centroid, Receive the described control signal that described Centroid sends.

27. distant-end nodes as claimed in claim 26 are it is characterised in that described control signal includes thing Reason broadcast channel PBCH and/or Physical Shared Channel PSCH.

28. distant-end nodes as described in claim 26 or 27 it is characterised in that described receiver module also For：

After described sending module sends notice signaling to described Centroid, receive described Centroid and send out The radio frames sent；Wherein, the primary importance for carrying described control signal in described radio frames carries Data message；Described notice signaling indicates that described Centroid sends described control signal, and described centromere Point does not receive the described triggering signaling that described distant-end node sends, or, during the instruction of described notice signaling is described Heart node does not send described control signal.

29. such as claim 26-28 arbitrary described distant-end nodes are it is characterised in that described distant-end node Also include determining module, be used for：

After described sending module sends notice signaling to described Centroid, if notice signaling Deictic Center Node sends control signal, according to communication protocol or pre-defined rule, determines the mode receiving described control signal It is after sending triggering signaling to described Centroid, receive the described control letter that described Centroid sends Number.

If 30. such as claim 26-28 arbitrary described distant-end nodes are it is characterised in that described notify letter The described Centroid of order instruction sends described control signal, then described notice signaling is additionally operable to indicate described center The mode that node sends described control signal to described distant-end node is in the triggering receiving described distant-end node Described control signal is sent to described distant-end node after signaling.

31. such as claim 26-30 arbitrary described distant-end nodes are it is characterised in that described receiver module For：

After described sending module sends triggering signaling to described Centroid, receive described Centroid and send A described control signal；Or

After described sending module sends triggering signaling to described Centroid, continuously receive described Centroid The multiple described control signal sending.

32. distant-end nodes as claimed in claim 31 are it is characterised in that described distant-end node also includes Merge module and acquisition module；

Described merging module, in the continuous multiple institutes receiving described Centroid transmission of described receiver module After stating control signal, merge the plurality of control signal receiving, obtain master control signal；

Described acquisition module, for obtaining, according to described master control signal, the system control that described Centroid sends Information processed or synchronizing information.

33. such as claim 26-32 arbitrary described distant-end nodes are it is characterised in that described receiver module It is additionally operable to：

After described sending module sends notice signaling to described Centroid, according to communication protocol or predetermined Time-domain resource and frequency domain resource that rule determines, receive the control after the change that described Centroid sends Signal；Or

After described sending module sends notice signaling to described Centroid, according to communication protocol or predetermined Time-domain resource and frequency domain resource that rule determines, after continuously receiving multiple changes that described Centroid sends Control signal.

34. such as claim 26-33 arbitrary described distant-end nodes are it is characterised in that described notice signaling The quantity of the control signal being additionally operable to indicate that described Centroid continuously transmits.