CN106413107B

CN106413107B - A kind of control signal sending, receiving method and equipment

Info

Publication number: CN106413107B
Application number: CN201510451744.XA
Authority: CN
Inventors: 张伟; 张晓燕; 夏欣; 徐剑标; 吕磊
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2015-07-28
Filing date: 2015-07-28
Publication date: 2019-10-18
Anticipated expiration: 2035-07-28
Also published as: CN106413107A; WO2017016383A1

Abstract

The invention discloses a kind of control signaling methods, continue the technical problem for causing overhead larger due to sending control signal to distant-end node because of central node for solving.The described method includes: the central node receives the notice signaling that the distant-end node is sent after central node and distant-end node establish connection, the notice signaling is used to indicate whether the central node sends control signal；If the notice signaling indicates that the central node sends the control signal, the central node sends the control signal to the distant-end node after the triggering signaling for receiving the distant-end node according to the instruction of the notice signaling.The invention also discloses corresponding method of reseptance and equipment.

Description

A kind of control signal sending, receiving method and equipment

Technical field

The present invention relates to field of communication technology, in particular to a kind of control signal sending, receiving method and equipment.

Background technique

Rank is being initially accessed such as LTE (Long Term Evolution, long term evolution) system for wireless communication system Section, the PSS (Physical that terminal passes through detection eNB (Evolved Node B, evolved node B) transmitting Synchronization Signal, primary synchronization signal) and/SSS (Secondary Synchronization Signal, it is auxiliary same Walk signal) acquisition cell ID (Identity, identity number), initial timing information and initial frequency deviation information etc., and pass through The PBCH (Physical Broadcast Channel, Physical Broadcast Channel) for demodulating eNB transmitting obtains other systems information, eventually Connection is established by these control signals and eNB obtained in end.

After terminal and eNB establish connection, no matter whether terminal also needs PSS/SSS and PBCH etc. to control signal, eNB Still it will continue to send these information to terminal by radio frames, cause overhead larger.

Summary of the invention

The embodiment of the present invention provides a kind of control signal sending, receiving method and equipment, holds for solving because of central node Continue the technical problem for sending control signal to distant-end node and causing overhead larger.

In a first aspect, providing a kind of control signaling method, comprising:

After central node and distant-end node establish connection, the central node receives the logical of the distant-end node transmission Know that signaling, the notice signaling are used to indicate whether the central node sends control signal；

If the notice signaling indicates that the central node sends the control signal, the central node is according to The instruction of notice signaling sends the control letter to the distant-end node after the triggering signaling for receiving the distant-end node Number.

With reference to first aspect, in the first possible implementation of the first aspect, the control signal includes PBCH And/or PSCH.

With reference to first aspect or the first possible implementation of first aspect, second in first aspect are possible In implementation, after the notice signaling that the central node receives that the distant-end node is sent, further includes:

The central node sends radio frames to the distant-end node；Wherein, it is used to carry institute in the radio frames State the first position carrying data information of control signal；The notice signaling indicates that the central node sends the control letter Number, and the central node does not receive the triggering signaling that the distant-end node is sent, or, the notice signaling indicates institute It states central node and does not send the control signal.

With reference to first aspect or the first possible implementation or second of possible implementation of first aspect, exist In the third possible implementation of first aspect, the notice signaling that the distant-end node is sent is received in the central node Later, further includes:

If the notice signaling indicates that the central node sends the control signal, the central node is according to communication Agreement or pre-defined rule determine that the mode for sending the control signal to the distant-end node is to receive the distant-end node The control signal is sent to the distant-end node after triggering signaling.

With reference to first aspect or the first possible implementation or second of possible implementation of first aspect, exist In 4th kind of possible implementation of first aspect, if the notice signaling indicates that the central node sends the control letter Number, then the notice signaling is also used to indicate that the central node is to the mode that the distant-end node sends the control signal The control signal is sent to the distant-end node after the triggering signaling for receiving the distant-end node.

With reference to first aspect or the first possible implementation of first aspect is into the 4th kind of possible implementation Any possible implementation saved in the fifth possible implementation of the first aspect receiving the distal end The control signal is sent to the distant-end node after the triggering signaling of point, comprising:

After receiving the triggering signaling of the distant-end node, Xiang Suoshu distant-end node sends a control signal； Or

After receiving the triggering signaling of the distant-end node, multiple control letters continuously are sent to the distant-end node Number.

The 5th kind of possible implementation with reference to first aspect, in the 6th kind of possible implementation of first aspect In, before continuously sending multiple control signals to the distant-end node, further includes:

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

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

With reference to first aspect or the first possible implementation of first aspect is into the 6th kind of possible implementation Any possible implementation, in a seventh possible implementation of the first aspect, further includes:

When the control signal changes, the central node time domain determining according to communication protocol or pre-defined rule Resource and frequency domain resource, Xiang Suoshu distant-end node send the control signal after a variation；Or

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

Second aspect provides a kind of control signal acceptance method, comprising:

After distant-end node and central node establish connection, the distant-end node sends notice letter to the central node It enables, the notice signaling is used to indicate whether the central node sends control signal；

If the notice signaling indicates that the central node sends the control signal, the distant-end node is according to described The instruction of notice signaling receives the control that the central node is sent after sending triggering signaling to the central node Signal.

In conjunction with second aspect, in the first possible implementation of the second aspect, the control signal includes PBCH And/or PSCH.

In conjunction with the possible implementation of the first of second aspect or second aspect, second in second aspect is possible In implementation, after the distant-end node sends notice signaling to the central node, further includes:

The distant-end node receives the radio frames that the remote central node is sent；Wherein, it is used in the radio frames Carry the first position carrying data information of the control signal；The notice signaling indicates that the central node sends the control Signal processed, and the central node does not receive the triggering signaling that the distant-end node is sent, or, the notice signaling refers to Show that the central node does not send the control signal.

In conjunction with the possible implementation of the first of second aspect or second aspect or second of possible implementation, In the third possible implementation of second aspect, the distant-end node to the central node send notice signaling it Afterwards, further includes:

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

In conjunction with the possible implementation of the first of second aspect or second aspect or second of possible implementation, In 4th kind of possible implementation of second aspect, if the notice signaling indicates that the central node sends the control letter Number, then the notice signaling is also used to indicate that the central node is to the mode that the distant-end node sends the control signal The control signal is sent to the distant-end node after the triggering signaling for receiving the distant-end node.

In conjunction with the possible implementation of the first of second aspect or second aspect into the 4th kind of possible implementation Any possible implementation, in a fifth possible implementation of the second aspect, to the central node send out After sending triggering signaling, the control signal that the central node is sent is received, comprising:

After sending triggering signaling to the central node, one that the central node the is sent control letter is received Number；Or

After sending triggering signaling to the central node, multiple controls that the central node is sent continuously are received Signal.

In conjunction with the 5th kind of possible implementation of second aspect, in the 6th kind of possible implementation of second aspect In, after continuously receiving multiple control signals that the central node is sent, further includes:

The distant-end node merges received the multiple control signal, obtains master control signal；

The distant-end node according to the master control signal obtain system control information that the central node is sent or Synchronizing information.

In conjunction with the possible implementation of the first of second aspect or second aspect into the 6th kind of possible implementation Any possible implementation, in the 7th kind of possible implementation of second aspect, in the distant-end node to institute State central node send notice signaling after, further includes:

The time-domain resource and frequency domain resource that the distant-end node is determined according to communication protocol or pre-defined rule, receive in described Control signal after the variation that heart node is sent；Or

The time-domain resource and frequency domain resource that the distant-end node is determined according to communication protocol or pre-defined rule, continuously receive institute Control signal after stating multiple variations of central node transmission.

In conjunction with the possible implementation of the first of second aspect or second aspect into the 7th kind of possible implementation Any possible implementation, in the 8th kind of possible implementation of second aspect, the notice signaling is also used to Indicate the quantity for the control signal that the central node continuously transmits.

The third aspect provides a kind of central node, comprising:

Receiving module, for after the central node and distant-end node establish connection, receiving the distant-end node hair The notice signaling sent, the notice signaling are used to indicate whether the central node sends control signal；

Sending module, if indicating that the central node sends the control signal for the notice signaling, it is described in Heart node is according to the instruction of the notice signaling, to institute after the triggering signaling that the receiving module receives the distant-end node It states distant-end node and sends the control signal.

In conjunction with the third aspect, in the first possible implementation of the third aspect, the control signal includes PBCH And/or PSCH.

In conjunction with the possible implementation of the first of the third aspect or the third aspect, second in the third aspect is possible In implementation, the sending module is also used to:

After the notice signaling that the receiving module receives that the distant-end node is sent, Xiang Suoshu distant-end node sends nothing Line frame；Wherein, the first position for carrying the control signal in the radio frames carries data information；The notice Signaling indicates that the central node sends the control signal, and the central node does not receive what the distant-end node was sent The triggering signaling, or, the notice signaling indicates that the central node does not send the control signal.

In conjunction with the possible implementation of the first of the third aspect or the third aspect or second of possible implementation, In the third possible implementation of the third aspect, the central node further includes determining module, is used for:

After the notice signaling that the receiving module receives that the distant-end node is sent, if the notice signaling indicates institute It states central node and sends the control signal, then according to communication protocol or pre-defined rule, determine to the distant-end node and send institute The mode for stating control signal is to send the control letter to the distant-end node after the triggering signaling for receiving the distant-end node Number.

In conjunction with the possible implementation of the first of the third aspect or the third aspect or second of possible implementation, In 4th kind of possible implementation of the third aspect, if the notice signaling indicates that the central node sends the control letter Number, then the notice signaling is also used to indicate that the central node is to the mode that the distant-end node sends the control signal The control signal is sent to the distant-end node after the triggering signaling for receiving the distant-end node.

In conjunction with the possible implementation of the first of the third aspect or the third aspect into the 4th kind of possible implementation Any possible implementation, in the 5th kind of possible implementation of the third aspect, the sending module is used for:

After the receiving module receives the triggering signaling of the distant-end node, Xiang Suoshu distant-end node sends an institute State control signal；Or

After the receiving module receives the triggering signaling of the distant-end node, continuously sent to the distant-end node more A control signal.

In conjunction with the 5th kind of possible implementation of the third aspect, in the 6th kind of possible implementation of the third aspect In, the central node further includes determining module, it is used for:

Before the sending module continuously sends multiple control signals to the distant-end node, according to communication protocol Or pre-defined rule determines the quantity of the control signal continuously transmitted；Or

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

In conjunction with the possible implementation of the first of the third aspect or the third aspect into the 6th kind of possible implementation Any possible implementation, in the 7th kind of possible implementation of the third aspect, the sending module is also used to:

When the control signal changes, the time-domain resource and frequency domain determined according to communication protocol or pre-defined rule is provided Source, Xiang Suoshu distant-end node send the control signal after a variation；Or

When the control signal changes, the time-domain resource and frequency domain determined according to communication protocol or pre-defined rule is provided Source continuously sends the control signal after multiple variations to the distant-end node.

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

Sending module, for after the distant-end node and central node establish connection, Xiang Suoshu central node to be sent Notice signaling, the notice signaling are used to indicate whether the central node sends control signal；

Receiving module, if indicating that the central node sends the control signal for the notice signaling, according to institute The instruction for stating notice signaling receives the central node after the sending module sends triggering signaling to the central node The control signal sent.

In conjunction with fourth aspect, in the first possible implementation of the fourth aspect, the control signal includes PBCH And/or PSCH.

In conjunction with the possible implementation of the first of fourth aspect or fourth aspect, second in fourth aspect is possible In implementation, the receiving module is also used to:

After the sending module sends notice signaling to the central node, the nothing that the central node is sent is received Line frame；Wherein, the first position for carrying the control signal in the radio frames carries data information；The notice Signaling indicates that the central node sends the control signal, and the central node does not receive what the distant-end node was sent The triggering signaling, or, the notice signaling indicates that the central node does not send the control signal.

In conjunction with the possible implementation of the first of fourth aspect or fourth aspect or second of possible implementation, In the third possible implementation of fourth aspect, the distant-end node further includes determining module, is used for:

After the sending module sends notice signaling to the central node, if notice signaling Deictic Center node is sent out Control signal is sent, according to communication protocol or pre-defined rule, determines that the mode for receiving the control signal is to the centromere After point sends triggering signaling, the control signal that the central node is sent is received.

In conjunction with the possible implementation of the first of fourth aspect or fourth aspect or second of possible implementation, In 4th kind of possible implementation of fourth aspect, if the notice signaling indicates that the central node sends the control letter Number, then the notice signaling is also used to indicate that the central node is to the mode that the distant-end node sends the control signal The control signal is sent to the distant-end node after the triggering signaling for receiving the distant-end node.

In conjunction with the possible implementation of the first of fourth aspect or fourth aspect into the 4th kind of possible implementation Any possible implementation, in the 5th kind of possible implementation of fourth aspect, the receiving module is used for:

After the sending module sends triggering signaling to the central node, one that the central node is sent is received The control signal；Or

After the sending module sends triggering signaling to the central node, continuously receive what the central node was sent Multiple control signals.

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

The merging module, for continuously receiving multiple controls that the central node is sent in the receiving module After signal, merges received the multiple control signal, obtain master control signal；

The acquisition module, for obtaining the system control information that the central node is sent according to the master control signal Or synchronizing information.

In conjunction with the possible implementation of the first of fourth aspect or fourth aspect into the 6th kind of possible implementation Any possible implementation, in the 7th kind of possible implementation of fourth aspect, the receiving module is also used to:

It is true according to communication protocol or pre-defined rule after the sending module sends notice signaling to the central node Fixed time-domain resource and frequency domain resource, the control signal after receiving the variation that the central node is sent；Or

It is true according to communication protocol or pre-defined rule after the sending module sends notice signaling to the central node Fixed time-domain resource and frequency domain resource, the control signal after continuously receiving multiple variations that the central node is sent.

In conjunction with the possible implementation of the first of fourth aspect or fourth aspect into the 7th kind of possible implementation Any possible implementation, in the 8th kind of possible implementation of fourth aspect, the notice signaling is also used to Indicate the quantity for the control signal that the central node continuously transmits.

5th aspect, provides a kind of central node, comprising:

Memory, for storing instruction；

Receiver is sent for after the central node and distant-end node establish connection, receiving the distant-end node Notice signaling, the notice signaling is used to indicate whether the central node sends control signal；

Processor, for executing described instruction, if the notice signaling indicates that the central node sends the control letter Number, then according to the instruction of the notice signaling, after receiving the triggering signaling of the distant-end node, by transmitter to described Distant-end node sends the control signal.

In conjunction with the 5th aspect, in the first possible implementation of the 5th aspect, the control signal includes PBCH And/or PSCH.

In conjunction with the first possible implementation of the 5th aspect or the 5th aspect, second at the 5th aspect is possible In implementation, the transmitter is also used to:

After the notice signaling that the receiver receives that the distant-end node is sent, Xiang Suoshu distant-end node sends wireless Frame；Wherein, the first position for carrying the control signal in the radio frames carries data information；The notice letter It enables and indicates that the central node sends the control signal, and the central node does not receive the institute that the distant-end node is sent Triggering signaling is stated, or, the notice signaling indicates that the central node does not send the control signal.

In conjunction with the 5th aspect or the 5th aspect the first possible implementation or second of possible implementation, In the third possible implementation of 5th aspect, the processor is also used to:

After the notice signaling that the receiver receives that the distant-end node is sent, if described in notice signaling instruction Central node sends the control signal, then according to communication protocol or pre-defined rule, determines to described in distant-end node transmission The mode for controlling signal is to send the control signal to the distant-end node after the triggering signaling for receiving the distant-end node.

In conjunction with the 5th aspect or the 5th aspect the first possible implementation or second of possible implementation, In 4th kind of possible implementation of the 5th aspect, if the notice signaling indicates that the central node sends the control letter Number, then the notice signaling is also used to indicate that the central node is to the mode that the distant-end node sends the control signal The control signal is sent to the distant-end node after the triggering signaling for receiving the distant-end node.

In conjunction with the first possible implementation of the 5th aspect or the 5th aspect into the 4th kind of possible implementation Any possible implementation, the 5th aspect the 5th kind of possible implementation in, the processor is used for:

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

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

In conjunction with the 5th kind of possible implementation of the 5th aspect, in the 6th kind of possible implementation of the 5th aspect In, the processor is also used to:

Before continuously sending multiple control signals to the distant-end node by the transmitter, according to communication protocols View or pre-defined rule determine the quantity of the control signal continuously transmitted；Or

Before continuously sending multiple control signals to the distant-end node by the transmitter, according to described logical Know that the instruction of signaling determines the quantity of the control signal continuously transmitted.

In conjunction with the first possible implementation of the 5th aspect or the 5th aspect into the 6th kind of possible implementation Any possible implementation, the 5th aspect the 7th kind of possible implementation in, the processor is also used to:

When the control signal changes, the time-domain resource and frequency domain determined according to communication protocol or pre-defined rule is provided Source sends the control signal after a variation to the distant-end node by the transmitter；Or

When the control signal changes, the time-domain resource and frequency domain determined according to communication protocol or pre-defined rule is provided Source continuously sends the control signal after multiple variations by the transmitter to the distant-end node.

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

Memory, for storing instruction；

Processor after the distant-end node and central node establish connection, passes through transmission for executing described instruction Device sends notice signaling to the central node, and the notice signaling is used to indicate whether the central node sends control letter Number；

Receiver, if indicating that the central node sends the control signal, the distal end for the notice signaling Node sends triggering letter to the central node by the transmitter in the processor according to the instruction of the notice signaling After order, the control signal that the central node is sent is received.

In conjunction with the 6th aspect, in the first possible implementation of the 6th aspect, the control signal includes PBCH And/or PSCH.

In conjunction with the first possible implementation of the 6th aspect or the 6th aspect, second at the 6th aspect is possible In implementation, the receiver is also used to:

After the processor sends notice signaling to the central node by the transmitter, the center is received The radio frames that node is sent；Wherein, the first position for carrying the control signal in the radio frames carries data Information；The notice signaling indicates that the central node sends the control signal, and the central node do not receive it is described The triggering signaling that distant-end node is sent, or, the notice signaling indicates that the central node does not send the control signal.

In conjunction with the 6th aspect or the 6th aspect the first possible implementation or second of possible implementation, In the third possible implementation of 6th aspect, the processor is also used to:

After sending notice signaling to the central node by the transmitter, if notice signaling Deictic Center node Control signal is sent, according to communication protocol or pre-defined rule, determines that the mode for receiving the control signal is to the center After node sends triggering signaling, the control signal that the central node is sent is received.

In conjunction with the 6th aspect or the 6th aspect the first possible implementation or second of possible implementation, In 4th kind of possible implementation of the 6th aspect, if the notice signaling indicates that the central node sends the control letter Number, then the notice signaling is also used to indicate that the central node is to the mode that the distant-end node sends the control signal The control signal is sent to the distant-end node after the triggering signaling for receiving the distant-end node.

In conjunction with the first possible implementation of the 6th aspect or the 6th aspect into the 4th kind of possible implementation Any possible implementation, the 6th aspect the 5th kind of possible implementation in, the receiver is used for:

After the processor sends triggering signaling to the central node by the transmitter, the centromere is received The control signal that point is sent；Or

After the processor sends triggering signaling to the central node by the transmitter, continuously receive in described Multiple control signals that heart node is sent.

In conjunction with the 5th kind of possible implementation of the 6th aspect, in the 6th kind of possible implementation of the 6th aspect In, the processor is also used to:

After multiple control signals that the receiver continuously receives that the central node is sent, merge received The multiple control signal, obtains master control signal；

The system control information or synchronizing information that the central node is sent are obtained according to the master control signal.

In conjunction with the first possible implementation of the 6th aspect or the 6th aspect into the 6th kind of possible implementation Any possible implementation, the 6th aspect the 7th kind of possible implementation in, the receiver is also used to:

After the processor sends notice signaling to the central node by the transmitter, according to communication protocol Or time-domain resource and frequency domain resource that pre-defined rule determines, the control letter after receiving the variation that the central node is sent Number；Or

After the processor sends notice signaling to the central node by the transmitter, according to communication protocol Or time-domain resource and frequency domain resource that pre-defined rule determines, the control after continuously receiving multiple variations that the central node is sent Signal.

In conjunction with the first possible implementation of the 6th aspect or the 6th aspect into the 7th kind of possible implementation Any possible implementation, the 6th aspect the 8th kind of possible implementation in, the notice signaling is also used to Indicate the quantity for the control signal that the central node continuously transmits.

In the embodiment of the present invention, distant-end node (such as terminal or RU (Remote Unit, extension unit) etc.) and in Heart node (such as eNB or HU (Hub Unit, center cell) etc.) is established after connection, and distant-end node can notify centromere Whether point sends to distant-end node controls signal, and central node can determine whether to send control letter according to the instruction of distant-end node Number, if central node does not send control signal to distant-end node without sending, send if necessary, then central node Control signal can be sent to distant-end node again after the triggering signaling (or being demand signalling) for receiving distant-end node.This Sample persistently sends control signal without central node, and allows the time resource that will be vacated and frequency resource etc. and be used for data to believe The transmission in road improves the spectrum efficiency of system to save the expense of system.Also, distant-end node can be determined independently Control signal how is received, control signal can be received again when needed, the utilization rate to control signal is improved, also avoids The redundancy that control signal causes information is received when not needing control signal.

Also, in the prior art, because control signal (such as PSS/SSS, PBCH etc.) can generally occupy in radio frames Center RB (Resource Block, resource block) resource, lead to PDSCH (Physical Downlink Shared Channel, Physical Downlink Shared Channel) discrete RB resource that edge can only be occupied, in SC-FDMA (Single- Carrier Frequency-Division Multiple Access, single-carrier frequency division multiple access) under modulation system, this dispersion The resource mapping method of formula increases PAPR (Peak to Average Power Ratio, the peak-to-average power of transmitter Than), and after using technical solution provided in an embodiment of the present invention, when not sending these control signals, PDSCH is mapped to In continuous subcarrier, the time-domain signal envelope transmitted at this time meets single-carrier property, it is hereby achieved that lower PAPR.

Detailed description of the invention

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；

Fig. 5 A is the RB schematic diagram that PSS/SSS and PBCH are occupied；

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

Fig. 6 is the structural block diagram of the central node in the embodiment of the present invention；

Fig. 7 is the structural block diagram of the distant-end node in the embodiment of the present invention；

Fig. 8 is the structural schematic diagram of the central node in the embodiment of the present invention；

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

Specific embodiment

In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art Every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.

Hereinafter, the part term in the present invention is explained, in order to those skilled in the art understand that.

Distant-end node in the embodiment of the present invention can refer to terminal, can perhaps refer to RU or can refer to small Stand, etc., central node can refer to eNB, or can refer to HU, etc..

1) terminal refers to the equipment for providing a user voice and/or data connectivity, such as may include having wirelessly to connect The handheld device of connection function or the processing equipment for being connected to radio modem.The terminal can through RAN and core net into Row communication, voice and/or data are exchanged with RAN.The terminal is properly termed as UE (user equipment, user equipment), wireless Terminal, mobile terminal, subscriber 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), user agent (User Agent) or user equipment (User Device) etc..For example, it may be mobile phone (or be " honeycomb " phone), the computer with mobile terminal, portable, pocket, hand-held, built-in computer or Vehicle-mounted mobile device.For example, PCS (Personal Communication Service, personal communication service) phone, wireless Phone, SIP (Session initiation Protocol) phone, WLL (Wireless Local Loop, wireless local loop) stand, PDA Equipment such as (Personal Digital Assistant, personal digital assistants).

2) base station (for example, access point) specifically can be and refer to the accession in net in the sky on interface by one or more fans The equipment in area and wireless terminal communications.The air frame that base station can be used for receive mutually is converted with IP grouping, as wireless Router between terminal and the rest part of access net, wherein the rest part for accessing net may include Internet protocol (IP) net Network.Attribute management of the base station also tunable to air interface.For example, base station can be the evolved base station (NodeB in LTE-A 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 are relative to LOS (Line of Sight, sighting distance) For.The propagation conditions of wireless communication system is usually divided into two kinds of environment of LOS and NLOS.Under the conditions of LOS, wireless signal It " straight line " can be propagated unobstructedly between transmitting terminal and receiving end, and in the case where there is barrier, i.e., in NLOS condition Under, wireless signal can only reach receiving end by modes such as reflection, scattering and diffraction, generally also by the wireless communication under the conditions of NLOS Number transmission be known as non line of sight transmission.

4) term " system " in the present invention and " network " can be used interchangeably." multiple " refer to two or more. "and/or" describes the incidence relation of affiliated partner, indicates may exist three kinds of relationships, for example, A and/or B, can indicate: single Solely there are A, exist simultaneously A and B, these three situations of individualism B.In addition, character "/", unless otherwise specified, before typicallying represent Affiliated partner is a kind of relationship of "or" afterwards.

Referring to Figure 1, the technical solution in the present invention is mainly used in NLOS scene, naturally it is also possible to apply in LOS In scene, the wireless backhaul of data between macro station and small station is completed.Pico BS (base stations, base station) in Fig. 1 is Small station, Macro BS are macro station, and the quantity in small station shown in Fig. 1 does not represent actual quantity, are served only for explaining application scenarios.

The present embodiments relate to the wireless communication procedure between distant-end node and central node, it is with distant-end node For RU, central node are HU, one of HU, which can permit, accesses one or more RU.RU passes through optical fiber or cable and more A kind of a Pico (femto base station) is attached transmits with data, and HU and macro station pass through optical fiber or cable or other transmission mediums It is attached and does data communication.

Continue by taking Fig. 1 as an example.In initial access phase, i.e., before initial connection foundation, HU is sent out by radio frames to RU PSS/SSS and PBCH are sent, general HU is periodicity sending PSS/SSS and PBCH, sends a radio frames, a radio frames every time In generally carry PSS/SSS and PBCH.RU obtains cell ID by the PSS/SSS of detection HU transmitting, initial determines When information and initial frequency deviation information etc., and by demodulation HU transmitting PBCH obtain other systems information, RU by obtain this A little control signals and HU establish initial connection.After RU and HU establish initial connection, HU can continue through radio frames and send out to RU PSS/SSS and PBCH, general HU or periodicity sending PSS/SSS and PBCH are sent, sends a radio frames every time, one wireless PSS/SSS and PBCH is generally carried in frame.

In the embodiment of the present invention, distant-end node and central node establish initial connection, can also referred to as establish connection.

Wireless backhaul system has following particularity (continuing by distant-end node to be for RU, central node are HU): first, After HU and RU establish initial connection, cell ID, system information etc. would generally remain unchanged in a long time；Second, in HU and The normal communication periods of RU, timing information and initial frequency deviation information etc., terminal can be obtained by measurement down public guide frequency etc. , it is not necessarily intended to obtain by the radio frames comprising PBCH and/or PSCH that HU is sent；Third, the RU serviced under the same HU Limited Number (such as in general be up to 4), in general HU does not need continually to emit PSCH (Physical Shared Channel, Physical Shared Channel) and PBCH be used to meet the access of multiple RU.

In summary, according to current mode, after RU and HU establish connection, no matter whether RU also needs PSS/SSS With the control signal such as PBCH, HU still can persistently continue through radio frames and send these control signals to RU, and these control letters RU needs number are not necessarily, causes overhead larger, reduces the spectrum efficiency of system.

The present invention fully takes into account problem above, distant-end node and central node (such as eNB or HU establish connection it Afterwards, distant-end node can notify central node, send control in the triggering signaling Shi Zaixiang distant-end node for receiving distant-end node Signal, central node can send control signal according to the instruction of distant-end node, in this way, persistently sending control letter without central node Number, the expense of system is saved, the spectrum efficiency of system is improved.Also, distant-end node can decide how to receive control in its sole discretion Signal processed can receive control signal again when needed, improve the utilization rate to control signal, also avoid not needing to control The redundancy that control signal causes information is received when signal processed.

In addition, sending PSS/SSS in the embodiment of the present invention, can referring to, PSS/SSS, PSS/SSS are sent by PSCH The information such as middle carrying cell ID, initial timing information and initial frequency deviation information.Likewise, sending PBCH, it can refer to, pass through PBCH sends information, may include except cell ID, initial timing information and initial frequency deviation information by the information that PBCH is sent Etc. other systems information etc. except information.

In the embodiment of the present invention, control signal may include PBCH and/or PSCH.Specifically, it is considered that control signal In include PSS/SSS carry information and/or pass through PBCH send information.From another angle, according to those skilled in the art The usual term of member, it is believed that control signal includes PBCH and/or PSCH, that is to say, that described in the embodiment of the present invention Controlling signal includes PBCH and/or PSCH, refers to that control signal includes sending by the PBCH information sent and/or by PSCH Information.

Fig. 2 is referred to, is a kind of frame structure schematic diagram of possible radio frames.D therein indicates that downlink subframe, S indicate Special subframe, U indicate sub-frame of uplink.It it can be seen that, include pilot signal, PBCH, GP in special subframe in the figure of refinement (Guard Period, protection interval) and UpPTS (Uplink Pilot TimeSlot, uplink pilot time slot), in downlink subframe Including pilot signal, PDCCH, PHICH (Physical Hybrid Automatic Repeat reQuest Indicator Channel physical hybrid automatic repeat request indicator channel), the information such as PSS, SSS, in sub-frame of uplink including pilot signal etc.. Wherein, in the figure of refinement, all parts not indicated show to be used for transmission data.

The frame structure of the radio frames is the frame structure after improving to the radio frames of LTE system, in the frame structure Fall PCFICH (Physical Control Format Indicator Channel, Physical Control Format Indicator Channel), The expense of system is saved to a certain extent.

The frame structure in Fig. 2 can be used in radio frames in the embodiment of the present invention, or LTE system also can be used originally Defined frame structure, or the other possible frame structures of LTE system also can be used.

In the embodiment of the present invention, in some radio frames may without send control signal, such as without send PBCH and/ Or PSCH, then, in these radio frames, it is originally used for carrying the position of these control signals, so that it may for carrying data, Increase the traffic volume of data.

The embodiment of the present invention is described in further detail with reference to the accompanying drawings of the specification.

Fig. 3 is referred to, the embodiment of the present invention provides a kind of method for sending information, and the process of the method is described as follows.

Step 301: after central node and distant-end node establish connection, central node receives the logical of distant-end node transmission Know that signaling, notice signaling are used to indicate whether central node sends control signal.

In the present embodiment, by central node be for HU, distant-end node are RU.

After HU and RU establish connection, RU can send notice signaling to HU, and RU can be when connection be established and finished i.e. Notice signaling is sent to HU, or notice signaling can also be sent to HU again after connection establishes and finishes one section of duration, in a word RU The time of notice signaling, the invention is not limited in this regard can be sent to HU determines according to actual conditions.

In the embodiment of the present invention, RU includes but is not limited to the mode that HU sends notice signaling: can pass through PUCCH (Physical Uplink Control Channel, Physical Uplink Control Channel) is sent, or can pass through PUSCH (Physical Uplink Shared Channel, Physical Uplink Shared Channel) is sent, or can pass through other ascendings Manage signal and carry out implicit instruction, such as by DMRS (Demodulation Reference Signal, demodulated reference signal) or SRS (Sounding Reference Signal, Sounding Reference Signal) etc. carries out implicit instruction, or is issued by RU The high-level signaling of HU carries out implicit 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, notice signaling is also It can serve to indicate that central node sends the mode of control signal, such as a kind of possible mode to distant-end node are as follows: receiving Control signal is sent to distant-end node after the triggering signaling of distant-end node.

That is, notice signaling is in addition to that can be that other than HU will send control signal, also can indicate that and send control signal Mode is suitble to the mode of oneself to receive control signal in this way, RU can choose, and the independence of RU is stronger, also can more be suitble to When receive control signal, improve control signal utilization rate, reduce information redundancy.

For example, notice signaling can indicate HU, control signal is sent to RU again in the triggering signaling for receiving RU, also It is instruction HU, in the triggering signaling for being not received by RU, does not have to send control signal to RU.In this way, RU can need to connect Triggering signaling is sent to HU when receiving control signal, the control signal of redundancy will not be received when controlling signal without receiving, The information content for reducing the received garbage of RU decreases the number that HU sends control signal, mitigates the burden of HU, saves Transfer resource.

Alternatively, notice signaling can indicate HU, control signal periodically is sent to RU, sending cycle can be greater than existing skill Sending cycle in art.For example, in the prior art, after HU and RU establish initial connection, HU automatically according to the period 1 to RU sends PSS/BSS and PBCH, then after HU and RU establish connection, RU can indicate HU in the embodiment of the present invention, according to Second round sends control signal to RU, and second round is greater than the period 1, that is to say, that in the embodiment of the present invention, HU is sent The number of control signal is reduced, and transfer resource is saved.

Optionally, in the embodiment of the present invention, after central node and distant-end node establish connection, the central node is connect After the notice signaling for receiving the distant-end node transmission, further includes:

If notice signaling Deictic Center node sends control signal, central node according to communication protocol or pre-defined rule, Determine that the mode for sending control signal to distant-end node is to send to control to distant-end node after the triggering signaling for receiving distant-end node Signal processed.

That is, if notice signaling Deictic Center node send control signal, central node can by three kinds of modes come Determine the mode that control signal is sent to distant-end node.

The first, notice signaling can further indicate that central node sends the mode of control signal to distant-end node, in Heart node can be obtained by notice signaling.As above it has been introduced, seldom repeats.

Second, communication protocol can specify that central node sends the mode of control signal, central node to distant-end node It can be in a manner of directly being determined according to the regulation of communication protocol and send control signal to distant-end node.For example, communication protocol can be with Regulation, HU sends control signal to RU again in the triggering signaling for receiving RU, alternatively, communication protocol is it can be stated that the HU period Property to RU send control signal, etc..

The third, central node and distant-end node can appoint that central node sends control signal to distant-end node in advance Mode (central node and distant-end node can be known as pre-defined rule in a manner of appointing in advance), central node can be with The mode that control signal is sent to distant-end node is directly determined according to pre-defined rule.For example, pre-defined rule is it can be stated that HU is connecing Control signal is sent to RU again when receiving the triggering signaling of RU, alternatively, pre-defined rule is it can be stated that HU periodically sends control to RU Signal processed, etc..

Optionally, in the embodiment of the present invention, before step 301, central node first has to establish connection with distant-end node. Central node and distant-end node establish connection, and a kind of possible mode may is that

Central node sends a control signal or central node to distant-end node and continuously sends multiple controls to distant-end node Signal processed, control signal establish connection for distant-end node and central node；

Central node and distant-end node control signals based on the one or more of transmission and establish connection.

That is, during HU and RU establish connection, it can be there are two types of implementation, mode A and mode B.

Mode A, when HU also with RU does not establish connection, HU periodically sends control signal, sends a control every time Signal, such as control signal includes PBCH and/or PSCH, sending cycle at this time can be equal to transmission week in the prior art Phase, or sending cycle in the prior art can also be not equal to.

RU is provided according to communication protocol or RU and HU are appointed in advance time-domain resource and frequency domain resource detection PBCH and/or PSCH obtains cell ID and initial timing information, initial frequency deviation information and other systems information etc., and RU is according to the letter of acquisition Breath establishes connection with HU, and then the relevant information for establishing successful connection is fed back to HU by RU.RU sends notice signaling to HU, can be with It is individually to be sent after the information for establishing successful connection to HU feedback, or the information for establishing successful connection can be being fed back to HU When send together, such as can individually send, or can consider and carried in notice signaling in the information for establishing successful connection Information.For HU after receiving notice signaling, will control the emission mode of signal from periodical launch pattern switching is that RU is triggered Mode, that is, no longer periodicity sending controls signal, but retransmits control signal when receiving the triggering signaling of RU transmission.

Mode B, when HU also with RU does not establish connection, HU periodically sends control signal burst (burst), hair Burst is sent, can refer to primary transmission multiple control signal, and information included by each control signal may be identical. Such as control signal includes PBCH and/or PSCH, sending cycle at this time can be equal to sending cycle in the prior art, or Sending cycle in the prior art can also be not equal to.

Time-domain resource and frequency domain resource the detection PSCH that RU is provided according to communication protocol or RU and HU are appointed in advance, obtain Cell ID and initial timing information, initial frequency deviation information and other systems information etc., RU are built according to the information of acquisition with HU Vertical connection, then the relevant information for establishing successful connection is fed back to HU by RU.RU sends notice signaling to HU, can be to HU Feedback is individually sent after establishing the information of successful connection, or can be one concurrent when establishing the information of successful connection to HU feedback It send, such as can individually send, or can consider the information carried in notice signaling in the information for establishing successful connection.HU After receiving notice signaling, the emission mode for controlling signal is triggered into mode from periodical launch pattern switching for RU, that is, no Periodicity sending controls signal again, but retransmits control signal when receiving the triggering signaling of RU transmission.

It is above only to list two kinds of possible modes for establishing connection, in the embodiment of the present invention, central node and distal end Node can also be not limited by both the above mode it is any establish connection, such as the prior art can also be passed through Other possible modes establish connection, and the present invention is with no restriction.

Optionally, in the embodiment of the present invention, after distant-end node sends notice signaling to central node, further includes:

Distant-end node receives the radio frames that remote central node is sent；Wherein, it is used to carry the control in radio frames The first position of signal carries data information, and first position is the position for being originally used for carrying control signal；Notice signaling instruction Central node sends control signal, and central node does not receive the triggering signaling of distant-end node transmission, or, notice signaling indicates Central node does not send control signal.

That is, central node still normally can send radio frames to distant-end node, only in the prior art, in each radio frames In all carry PBCH and PSCH, and after adopting the technical scheme of the embodiment of the present invention, have in some radio frames without carrying control Signal processed, for example, if notice signaling Deictic Center node sends control signal, and central node does not receive distant-end node hair The triggering signaling sent, or, notice signaling Deictic Center node does not send control signal, then in these cases, if central node It needs to send radio frames to distant-end node, control signal can not be carried in these radio frames.For example, by being controlled in radio frames The position that signal processed occupies originally is known as first position, then, when without carrying control signal, first position For carrying other information, such as data information can be carried, the number that a radio frames can be transmitted can be increased in this way It is believed that the data volume of breath, reduces the quantity of the radio frames of transmission, overhead is reduced, improves information transfer efficiency.

Step 302: if notice signaling Deictic Center node sends control signal, central node is according to the finger of notice signaling Show, sends control signal to distant-end node after the triggering signaling for receiving distant-end node.

In the embodiment of the present invention, central node, which can be determined according to the instruction of notice signaling to distant-end node, sends control letter Number mode, can perhaps be determined according to the regulation of communication protocol to distant-end node send control signal mode or can be with The mode for sending control signal to distant-end node is determined according to pre-defined rule, is had been described in step 301.

HU is when receiving the notice signaling of RU transmission, if notice signaling instruction HU sends control signal, HU for example will The sending mode of control signal is adjusted to RU triggering mode, i.e., control signal is sent after the triggering signaling for receiving RU transmission Mode, if notice signaling instruction HU does not send control signal, the sending mode for controlling signal for example is adjusted to forbid sending out by HU Mode is sent, i.e., does not send the mode of control signal.

If notice signaling indicates that HU sends control signal, when not receiving the triggering signaling of RU transmission, HU is generally not Control signal (certainly, if control signal changes, may still understand active transmission to RU) can be sent to RU, if HU receives the triggering signaling of RU transmission, then HU can send control signal to RU.

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

Central node is sent out after receiving the triggering signaling of distant-end node to distant-end node according to the instruction of notice signaling Send a control signal；Or

Central node is continuously saved to distal end after receiving the triggering signaling of distant-end node according to the instruction of notice signaling Point sends multiple control signal (sending control signal burst).

Optionally, in the embodiment of the present invention, before continuously sending multiple control signals to the distant-end node, also Include:

If central node determines the mode for sending control signal to distant-end node according to the instruction of notice signaling, lead to Know that also can indicate that HU every time is transmission one in signaling other than how instruction HU adjusts the emission mode of emissioning controling signal A control signal still sends control signal burst.It, can be with and if instruction HU is sent every time controls signal burst Instruction specifically sends how many control signals every time, such as instruction sends three control signals every time.The independence of RU is stronger, more Be conducive to RU and obtain required information in the way of being suitble to itself.

Alternatively, making a reservation for if central node determines the mode for sending control signal to distant-end node according to pre-defined rule For rule other than how instruction HU adjusts the emission mode of emissioning controling signal, also can indicate that HU every time is to send a control Signal processed still sends control signal burst.And it if instruction HU sends control signal burst every time, also can indicate that How many control signals are specifically sent every time.

Alternatively, if central node, which is determined according to the regulation of pre-defined rule or communication protocol to distant-end node, sends control letter Number mode, and according to the regulation of pre-defined rule or communication protocol determine every time send control signal burst, then can also pass through Notice signaling specifically sends how many control signals to determine every time.

Optionally, it in the embodiment of the present invention, after the notice signaling that central node receives that distant-end node is sent, also wraps It includes:

When control signal changes, the central node time-domain resource and frequency determining according to communication protocol or pre-defined rule Domain resource sends the control signal after a variation to distant-end node；Or

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

Even if central node, which is determined, is adjusted to RU triggering mode for the sending mode for controlling signal, and is controlling signal When variation, or in the case where some other needs actively send control signal to distant-end node, central node still can be with Actively control signal is sent to distant-end node.For example, changed control signal is known as the control signal after changing, that , HU is when sending, and control signal after can sending a variation or can also continuously transmit the control after multiple variations Signal (sends the control signal burst after variation).

The pre-defined rule that communication protocol or central node and distant-end node are arranged in advance can specify that corresponding time domain money Source and frequency domain resource, in this way central node need actively to distant-end node send control signal (such as variation after control letter Number) when can be sent by defined time-domain resource and frequency domain resource, the feelings for avoiding distant-end node to occur can't detect as far as possible Condition improves the received success rate of information.

When control signal changes, or in the case where some other needs actively send control signal to RU, HU still actively can send control signal, this mechanism, it is ensured that RU being capable of the changed control of timely learning to RU Signal.

Fig. 4 is referred to, based on the same inventive concept, the embodiment of the present invention provides a kind of message receiving method, the method Process be described as follows, in citing, continue with distant-end node to be RU, for central node is HU.

Step 401: after distant-end node and central node establish connection, distant-end node sends notice letter to central node It enables, notice signaling is used to indicate whether central node sends control signal.

Controlling signal includes PBCH and/or PSCH.

Before step 401, RU first has to establish connection with HU.

Optionally, in the embodiment of the present invention, distant-end node and central node establish connection, comprising:

Distant-end node receives the control signal that central node is sent or distant-end node receives central node and continuously transmits Multiple control signal (receive control signal burst)；

Distant-end node a control signal or multiple control signal based on the received, establish connection with central node.

Before a connection is established, HU sends the mode of control signal to RU, has been introduced in Fig. 1 process.

Optionally, in the embodiment of the present invention, distant-end node multiple control signal based on the received is established with central node and is connected It connects, comprising:

Distant-end node merges received multiple control signal, obtains master control signal；

Distant-end node establishes connection according to the master control signal and central node.

That is, before HU and RU establish connection, if that HU sends to RU is control signal burst, that is, continuously transmit Multiple control signal, then RU can merge the multiple control signal of receiving, obtain master control signal, can be improved in this way Diversity gain.RU can establish connection with HU according to obtained master control signal is merged.Wherein, although RU has received multiple controls Signal, but information entrained by multiple control signal may be identical, then, RU merges multiple control signal, obtains To master control signal, RU can obtain the information for establishing connection from master control signal, obtain from master control signal Information, it is also possible to it is identical to follow the information obtained in single control signal, and does not represent in all control signals and includes The complete or collected works of information.

Alternatively, HU and RU can also establish connection by other possible modes, the present invention is with no restriction.

Distant-end node receives the radio frames that remote central node is sent；Wherein, the first position carrying data letter in radio frames Breath, first position are the position for being originally used for carrying control signal；Notice signaling Deictic Center node, which is sent, controls signal, and in Heart node 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 central node establish connection, distant-end node is to center Node is sent after notice signaling, further includes:

If notice signaling Deictic Center node sends control signal, distant-end node is according to communication protocol or pre-defined rule, really The fixed mode for receiving control signal is to receive the control signal that distant-end node is sent after sending triggering signaling to central node.

Optionally, in the embodiment of the present invention, if notice signaling Deictic Center node sends control signal, notice signaling is also It is used to indicate central node and sends the mode of control signal to distant-end node as the Xiang Yuan after the triggering signaling for receiving distant-end node End node sends control signal.

That is, central node can arrange in advance according to the instruction of notice signaling, the regulation of communication protocol or with distant-end node Pre-defined rule come determine to distant-end node send control signal mode, the invention is not limited in this regard.

About this partial content, has been introduced in Fig. 3 process, seldom repeat herein.

The time-domain resource and frequency domain resource that distant-end node is determined according to communication protocol or pre-defined rule receive central node hair Control signal after the variation sent；Or

The time-domain resource and frequency domain resource that distant-end node is determined according to communication protocol or pre-defined rule, continuously receive centromere Control signal after multiple variations that point is sent.

That is, the control signal after variation still actively can be sent to RU by HU if control signal is changed. When sending, it can choose and send a control signal, or multiple control signal can also be continuously transmitted.

Step 402: the instruction of distant-end node signaling as per advice receives the triggering of distant-end node transmission in central node When signaling, the control signal that central node is sent is received.

After RU sends notice signaling to HU, if notice signaling instruction HU does not send control signal, HU generally will not be to RU Hair control signal, if notice signaling instruction HU sends control signal, HU generally will not in the triggering signaling for not receiving RU Actively control signal is sent to RU.So, RU can send triggering signaling when needing to receive control signal to HU, and HU is connecing To when triggering signaling, control signal will be sent to RU.

In the embodiment of the present invention, RU needs to receive the case where controlling signal, including but not limited to: RU request variation transmitting day Line number mesh, RU request variation transmission mode, RU Timing measurement to avoid or correct the need of the needs of step-out, RU frequency deviation measurement Want, etc. at least one of situation.

Optionally, in the embodiment of the present invention, after sending triggering signaling to central node, the control that central node is sent is received Signal processed, comprising:

After sending triggering signaling to central node, the control signal that central node is sent is received；Or

After sending triggering signaling to central node, the continuous multiple control signal for receiving central node and sending.

That is, HU be according to it is determining to RU send control signal mode come think RU send control signal, then, RU to After HU sends triggering signaling, RU may can receive the control signal or continuous multiple control signal (i.e. HU of HU transmission That send is control signal burst).

Optionally, it in the embodiment of the present invention, after continuously receiving the multiple control signal that central node is sent, also wraps It includes:

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

Distant-end node obtains system control information or the synchronizing information etc. that central node is sent according to master control signal.

That is, if RU it is received be a control signal, what RU can directly be sent according to the control signal acquisition HU Information, such as may include system control information or synchronizing information etc., specifically, if control signal include PBCH and/or PSCH, then RU can accordingly obtain the information of PBCH carrying and/or the information of PSCH carrying.

And if RU it is received be continuous multiple control signal, and each content for being carried of control signal may be Identical, continuously transmitting is repeatedly to avoid information from losing as far as possible to improve system reliability.Then RU can be by the multiple of receiving Control signal merges, and obtains master control signal, diversity gain can be improved in this way.Wherein, although RU has received multiple controls Signal processed, but information entrained by multiple control signal may be identical, then, RU merges multiple control signal, Master control signal is obtained, the information obtained from master control signal, it is also possible to follow the information phase obtained in single control signal Together, not representing is all complete or collected works for controlling the information for including in signals.

In the embodiment of the present invention, Fig. 4 process is process corresponding with Fig. 3 process, and content can be referred to mutually.

In addition, the number of step is only to provide a kind of possible example in the embodiment of the present invention, it is impossible to be used in limit step Execute sequence, in practical applications, each step can be executed according to any possible sequence.

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

1, the traffic volume for reducing control signal can reduce overhead, promote the transmittability of wireless backhaul system.

Assuming that sending N number of radio frames altogether, wherein having does not include PSS/SSS and PBCH in M radio frames, N is more than or equal to 2 Integer, M is positive integer less than or equal to N.If the modulation system of wireless backhaul scene is 256QAM (Quadrature Amplitude Modulation, quadrature amplitude modulation), code rate 0.9, MIMO (Multiple-Input Multiple-Output, multiple-input and multiple-output) system data flow quantity be 6.In each radio frames, PSS and SSS are each It accounts for 10 RB (Resource Block, resource block), PBCH occupies 3 OFDM (Orthogonal Frequency Division Multiplexing, orthogonal frequency division multiplexing) center position in symbol 25 RB, then the money that average each radio frames are saved Source expense are as follows:

Wherein formula (1) is the overhead saved when not sending PSS and SSS, and formula (2) is saving when not sending PBCH Overhead.

2, because the control signal sent is reduced, the processing for reducing the transmitter of the side HU and the receiver of the side RU is complicated Degree, reduces the resource consumption of base band.

3, the PAPR of the transmitter of the side HU is advantageously reduced.

Fig. 5 A is referred to, in the prior art, by DFT (Discrete Fourier Transform, discrete fourier Transformation) processing after the RB (shown in the oblique line portion of Fig. 5 A) because PSS/SSS and PBCH generally ply in the centre at position is led It causes PDSCH that can only occupy discrete RB resource (shown in the horizontal line part of Fig. 5 A), then under SC-FDMA modulation system, increases The PAPR of transmitter.And Fig. 5 B is referred to, after the technical solution proposed using the embodiment of the present invention, when not sending these controls When signal, PDSCH is mapped in continuous subcarrier (shown in the horizontal line part of Fig. 5 B), the time-domain signal packet transmitted at this time Network meets single-carrier property, it is hereby achieved that lower PAPR.

The equipment in the embodiment of the present invention is introduced below in conjunction with attached drawing.

Fig. 6 is referred to, based on the same inventive concept, the embodiment of the present invention provides a kind of central node, the central node It may include receiving module 601 and sending module 602.

Receiving module 601, for after central node and distant-end node establish connection, receiving the logical of distant-end node transmission Know that signaling, notice signaling are used to indicate whether central node sends control signal；

Sending module 602, if indicating that the central node sends control signal for notice signaling, central node according to The instruction of notice signaling sends control signal to distant-end node after the triggering signaling for receiving 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, sending module 602 is also used to:

After the notice signaling that receiving module 601 receives that distant-end node is sent, radio frames are sent to distant-end node；Its In, the first position in radio frames carries data information, and first position is the position for being originally used for carrying control signal；Notice letter Deictic Center node is enabled to send control signal, and central node does not receive the triggering signaling of distant-end node transmission, or, notice letter Deictic Center node is enabled not send control signal.

Optionally, in the embodiment of the present invention, central node further includes determining module, is used for:

After the notice signaling that receiving module 601 receives that distant-end node is sent, if notice signaling Deictic Center node is sent out Control signal is sent, then according to communication protocol or pre-defined rule, determines that the mode for sending control signal to distant-end node is to receive Control signal is sent to distant-end node after the triggering signaling of distant-end node.

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

After receiving module 601 receives the triggering signaling of distant-end node, a control signal is sent to distant-end node；Or

After receiving module 601 receives the triggering signaling of distant-end node, multiple control letters continuously are sent to distant-end node Number.

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

Before sending module 602 continuously sends multiple control signal to distant-end node, according to communication protocol or pre- set pattern Then determine the quantity of the control signal continuously transmitted；Or

It is true according to the instruction of notice signaling before sending module 602 continuously sends multiple control signal to distant-end node Surely the quantity of the control signal continuously transmitted.

When controlling signal and changing, according to time-domain resource and frequency domain resource that communication protocol or pre-defined rule determine, The control signal after a variation is sent to distant-end node；Or

When controlling signal and changing, according to time-domain resource and frequency domain resource that communication protocol or pre-defined rule determine, The control signal after multiple variations is continuously sent to distant-end node.

Fig. 7 is referred to, based on the same inventive concept, the embodiment of the present invention provides a kind of distant-end node, the distant-end node It may include sending module 701 and receiving module 702.

Sending module 701, for sending notice letter to central node after distant-end node and central node establish connection It enables, notice signaling is used to indicate whether central node sends control signal；

Receiving module 702 controls signal if sending for notice signaling Deictic Center node, as per advice the finger of signaling Show, after sending module 701 sends triggering signaling to central node, receives the control signal that central node is sent.

Optionally, in the embodiment of the present invention, receiving module 702 is also used to:

After sending module 701 sends notice signaling to the central node, the radio frames that central node is sent are received； Wherein, the first position in radio frames carries data information, and first position is the position for being originally used for carrying control signal；Notice Signaling indicates that the central node sends control signal, and central node 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, distant-end node further includes determining module, is used for:

After sending module 701 sends notice signaling to central node, if notice signaling Deictic Center node sends control Signal processed determines that the mode for receiving control signal is to send triggering letter to central node according to communication protocol or pre-defined rule After order, the control signal that central node is sent is received.

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

After sending module 701 sends triggering signaling to central node, the control signal that central node is sent is received； Or

After sending module 701 sends triggering signaling to central node, the continuous multiple controls for receiving central node and sending Signal.

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

Merging module, for after the multiple control signal that receiving module continuously receives central node transmission, merging to be connect The multiple control signal received, obtains master control signal；

Module is obtained, for obtaining the system control information or synchronous letter that central node is sent according to master control signal Breath.

After sending module 701 sends notice signaling to central node, determined according to communication protocol or pre-defined rule Time-domain resource and frequency domain resource, the control signal after receiving the variation that central node is sent；Or

After sending module 701 sends notice signaling to central node, determined according to communication protocol or pre-defined rule Time-domain resource and frequency domain resource, the continuous control signal received after multiple variations that central node is sent.

Optionally, in the embodiment of the present invention, notice signaling is also used to the control signal that Deictic Center node continuously transmits Quantity.

Fig. 8 is referred to, based on the same inventive concept, the embodiment of the present invention also provides a kind of central node, the centromere Point may include memory 801, processor 802, receiver 803 and transmitter 804.Wherein, memory 801,803 and of receiver Transmitter 804 is connect with processor 802 respectively, such as be can be and connected respectively by different connecting lines, or can also be all Connected by same bus or different buses, etc., with no restriction for the specific connection type present invention.Receiver 803 and transmitter 804, it can be two mutually independent hardware modules, or two kinds be also possible in a hardware module Function, if receiver 803 and transmitter 804 are physically located in same hardware module, which can for example claim For transceiver.

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

Receiver 803, for after central node and distant-end node establish connection, receiving the notice that distant-end node is sent Signaling, notice signaling are used to indicate whether central node sends control signal；

Processor 802, for executing the instruction of the storage of memory 801, if notice signaling Deictic Center node sends control Signal after receiving the triggering signaling of distant-end node, is saved by transmitter 804 to distal end then according to the instruction of notice signaling Point sends control signal.

Optionally, in the embodiment of the present invention, transmitter 804 is also used to:

After the notice signaling that receiver 803 receives that distant-end node is sent, radio frames are sent to distant-end node；Wherein, First position in radio frames carries data information, and first position is the position for being originally used for carrying control signal；Notice signaling Deictic Center node sends control signal, and central node 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, processor 802 is also used to:

After the notice signaling that receiver 803 receives that distant-end node is sent, if notice signaling Deictic Center node is sent Signal is controlled, then according to communication protocol or pre-defined rule, the determining mode for sending control signal to distant-end node is to receive far Control signal is sent to distant-end node after the triggering signaling of end node.

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

After receiver 803 receives the triggering signaling of the distant-end node, sent by transmitter 804 to distant-end node One control signal；Or

After receiver 803 receives the triggering signaling of the distant-end node, by transmitter 804 continuously to distant-end node Send multiple control signal.

Before continuously sending multiple control signal to distant-end node by transmitter 804, according to communication protocol or make a reservation for Rule determines the quantity of the control signal continuously transmitted；Or

Before continuously sending multiple control signal to distant-end node by transmitter 804, according to the instruction of notice signaling Determine the quantity of the control signal continuously transmitted.

When controlling signal and changing, according to time-domain resource and frequency domain resource that communication protocol or pre-defined rule determine, The control signal after a variation is sent to distant-end node by transmitter 804；Or

When controlling signal and changing, according to time-domain resource and frequency domain resource that communication protocol or pre-defined rule determine, The control signal after multiple variations is continuously sent to distant-end node by transmitter 804.

Fig. 9 is referred to, based on the same inventive concept, the present invention also provides a kind of distant-end node, the distant-end node can be with Including memory 901, processor 902, receiver 903 and transmitter 904.Wherein, memory 901, receiver 903 and transmitter 904 connect with processor 902 respectively, such as can be and connected respectively by different connecting lines, or can also be all by same One bus or the connection of different buses, etc., with no restriction for the specific connection type present invention.Receiver 903 and hair Device 904 is sent, can be two mutually independent hardware modules, or two kinds of functions being also possible in a hardware module, such as Fruit receiver 903 and transmitter 904 are physically located in same hardware module, then the hardware module is for example properly termed as receiving and dispatching Device.

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

Processor 902, for executing the instruction of the storage of memory 901, distant-end node and central node establish connection it Afterwards, notice signaling is sent to central node by transmitter 904, notice signaling is used to indicate whether central node sends control letter Number；

Receiver 903, if sending control signal for notice signaling Deictic Center node, distant-end node is believed as per advice The instruction of order receives what central node was sent after processor 902 sends triggering signaling to central node by transmitter 904 Control signal.

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

After processor 902 sends notice signaling to central node by transmitter 904, receive what central node was sent Radio frames；Wherein, the first position in radio frames carries data information, and first position is the position for being originally used for carrying control signal It sets；Notice signaling Deictic Center node sends control signal, and central node 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, processor 902 is also used to:

After sending notice signaling to the central node by transmitter 904, if notice signaling Deictic Center node Control signal is sent, according to communication protocol or pre-defined rule, determines that the mode for receiving control signal is to send to central node After triggering signaling, the control signal that central node is sent is received.

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

After processor 902 sends triggering signaling to the central node by transmitter 904, receives central node and send A control signal；Or

After processor 902 sends triggering signaling to central node by transmitter 904, the continuous central node that receives is sent Multiple control signal.

After receiver 903 continuously receives the multiple control signal that central node is sent, merge received multiple controls Signal obtains master control signal；

The system control information or synchronizing information that central node is sent are obtained according to master control signal.

After processor 902 sends notice signaling to central node by transmitter 904, according to communication protocol or make a reservation for The time-domain resource and frequency domain resource that rule determines, the control signal after receiving the variation that central node is sent；Or

After processor 902 sends notice signaling to central node by transmitter 904, according to communication protocol or make a reservation for The time-domain resource and frequency domain resource that rule determines, the continuous control signal received after multiple variations that central node is sent.

In the embodiment of the present invention, after distant-end node and central node establish connection, distant-end node can notify center Whether node sends to distant-end node controls signal, and central node can determine whether to send control letter according to the instruction of distant-end node Number, if central node does not send control signal to distant-end node without sending, send if necessary, then central node Control signal can be sent to distant-end node again after the triggering signaling for receiving distant-end node.In this way, being held without central node Supervention send control signal, saves the expense of system, improves the spectrum efficiency of system.Also, distant-end node can voluntarily determine It is fixed how to receive control signal, control signal can be received again when needed, the utilization rate to control signal is improved, also keep away Exempt to receive the redundancy that control signal causes information when not needing control signal.

Also, in the prior art, cause because control signal can generally occupy the center RB resource in radio frames Discrete RB resource that PDSCH can only occupy edge increases the PAPR of transmitter under SC-FDMA modulation system, and adopts After technical solution provided in an embodiment of the present invention, when not sending these control signals, PDSCH maps to continuous son In carrier wave, the time-domain signal envelope transmitted at this time meets single-carrier property, it is hereby achieved that lower PAPR.

It is apparent to those skilled in the art that for convenience and simplicity of description, only with above-mentioned each function The division progress of unit can according to need and for example, in practical application by above-mentioned function distribution by different function lists Member is completed, i.e., the internal structure of device is divided into different functional units, to complete all or part of function described above Energy.The specific work process of the system, apparatus, and unit of foregoing description, can be with reference to corresponding in preceding method embodiment Journey, details are not described herein.

In several embodiments provided herein, it should be understood that disclosed system, device and method can be with It realizes by another way.For example, the apparatus embodiments described above are merely exemplary, for example, the unit or The division of unit, only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple units Or component can be combined or can be integrated into another system, or some features can be ignored or not executed.Another point, institute Display or the mutual coupling, direct-coupling or communication connection discussed can be through some interfaces, device or unit Indirect coupling or communication connection can be electrical property, mechanical or other forms.

The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple In network unit.It can select some or all of unit therein according to the actual needs to realize the mesh of this embodiment scheme 's.

It, can also be in addition, each functional unit in each embodiment of the application can integrate in one processing unit It is that each unit physically exists alone, can also be integrated in one unit with two or more units.Above-mentioned integrated list Member both can take the form of hardware realization, can also realize in the form of software functional units.

If the integrated unit is realized in the form of SFU software functional unit and sells or use as independent product When, it can store in a computer readable storage medium.Based on this understanding, the technical solution of the application is substantially The all or part of the part that contributes to existing technology or the technical solution can be in the form of software products in other words It embodies, which is stored in a storage medium, including some instructions are used so that a computer It is each that equipment (can be personal computer, server or the network equipment etc.) or processor (processor) execute the application The all or part of the steps of embodiment the method.And storage medium above-mentioned includes: USB flash disk, mobile hard disk, ROM (Read- Only Memory, read-only memory), RAM (Random Access Memory, random access memory), magnetic or disk Etc. the various media that can store program code.

The above, above embodiments are only described in detail to the technical solution to the application, but the above implementation The explanation of example is merely used to help understand method and its core concept of the invention, should not be construed as limiting the invention.This In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by those skilled in the art, should all cover Within protection scope of the present invention.

Claims

1. a kind of control signaling method characterized by comprising

After central node and distant-end node establish connection, the central node receives the notice letter that the distant-end node is sent It enables, the notice signaling is used to indicate whether the central node sends control signal；

If the notice signaling indicates that the central node sends the control signal, the central node is according to the notice The instruction of signaling sends the control signal to the distant-end node after the triggering signaling for receiving the distant-end node.

2. the method as described in claim 1, which is characterized in that the control signal include Physical Broadcast Channel PBCH and/or Physical Synchronisation Channel PSCH.

3. method according to claim 1 or 2, which is characterized in that receive the distant-end node in the central node and send Notice signaling after, further includes:

The central node sends radio frames to the distant-end node；Wherein, it is used to carry the control in the radio frames The first position of signal processed carries data information；The notice signaling indicates that the central node sends the control signal, and The central node does not receive the triggering signaling that the distant-end node is sent, or, during notice signaling instruction is described Heart node does not send the control signal.

4. method according to claim 1 or 2, which is characterized in that receive the distant-end node in the central node and send Notice signaling after, further includes:

If the notice signaling indicates that the central node sends the control signal, the central node is according to communication protocol Or pre-defined rule, determine that sending the mode of the control signal to the distant-end node is in the triggering for receiving the distant-end node The control signal is sent to the distant-end node after signaling.

5. method according to claim 1 or 2, which is characterized in that if the notice signaling indicates that the central node is sent The control signal, then the notice signaling is also used to indicate that the central node sends the control letter to the distant-end node Number mode be to send the control signal to the distant-end node after the triggering signaling for receiving the distant-end node.

6. method according to claim 1 or 2, which is characterized in that after the triggering signaling for receiving the distant-end node to The distant-end node sends the control signal, comprising:

After receiving the triggering signaling of the distant-end node, Xiang Suoshu distant-end node sends a control signal；Or

After receiving the triggering signaling of the distant-end node, multiple control signals continuously are sent to the distant-end node.

7. method as claimed in claim 6, which is characterized in that continuously sending multiple control letters to the distant-end node Before number, further includes:

8. the method as described in claims 1 or 2 or 7, which is characterized in that further include:

When the control signal changes, the central node time-domain resource determining according to communication protocol or pre-defined rule And frequency domain resource, Xiang Suoshu distant-end node send the control signal after a variation；Or

When the control signal changes, the central node time-domain resource determining according to communication protocol or pre-defined rule And frequency domain resource, the control signal after multiple variations is continuously sent to the distant-end node.

9. a kind of control signal acceptance method characterized by comprising

After distant-end node and central node establish connection, the distant-end node sends notice signaling to the central node, The notice signaling is used to indicate whether the central node sends control signal；

If the notice signaling indicates that the central node sends the control signal, the distant-end node is according to the notice The instruction of signaling receives the control signal that the central node is sent after sending triggering signaling to the central node.

10. method as claimed in claim 9, which is characterized in that the control signal include Physical Broadcast Channel PBCH and/or Physical Shared Channel PSCH.

11. the method as described in claim 9 or 10, which is characterized in that sent in the distant-end node to the central node After notice signaling, further includes:

The distant-end node receives the radio frames that the central node is sent；Wherein, it is used to carry institute in the radio frames State the first position carrying data information of control signal；The notice signaling indicates that the central node sends the control letter Number, and the central node does not receive the triggering signaling that the distant-end node is sent, or, the notice signaling indicates institute It states central node and does not send the control signal.

12. the method as described in claim 9 or 10, which is characterized in that sent in the distant-end node to the central node After notice signaling, further includes:

If notice signaling Deictic Center node sends control signal, the distant-end node is according to communication protocol or pre-defined rule, really Surely the mode for receiving the control signal is to receive the central node after sending triggering signaling to the central node to send The control signal.

13. the method as described in claim 9 or 10, which is characterized in that if the notice signaling indicates the central node hair The control signal is sent, then the notice signaling is also used to indicate that the central node sends the control to the distant-end node The mode of signal is to send the control signal to the distant-end node after the triggering signaling for receiving the distant-end node.

14. the method as described in claim 9 or 10, which is characterized in that after sending triggering signaling to the central node, connect Receive the control signal that the central node is sent, comprising:

After sending triggering signaling to the central node, the control signal that the central node is sent is received；Or

After sending triggering signaling to the central node, multiple control letters that the central node is sent continuously are received Number.

15. method as claimed in claim 14, which is characterized in that continuously receiving the multiple described of the central node transmission After control signal, further includes:

The distant-end node obtains the system control information or synchronization that the central node is sent according to the master control signal Information.

16. the method as described in claim 9 or 10 or 15, which is characterized in that in the distant-end node to the central node After transmission notice signaling, further includes:

The time-domain resource and frequency domain resource that the distant-end node is determined according to communication protocol or pre-defined rule, receive the centromere Control signal after the variation that point is sent；Or

The time-domain resource and frequency domain resource that the distant-end node is determined according to communication protocol or pre-defined rule, continuously receive in described Control signal after multiple variations that heart node is sent.

17. the method as described in claim 9 or 10 or 15, which is characterized in that the notice signaling is also used to indicate in described The quantity for the control signal that heart node continuously transmits.

18. a kind of central node characterized by comprising

Receiving module, for after the central node and distant-end node establish connection, receiving what the distant-end node was sent Notice signaling, the notice signaling are used to indicate whether the central node sends control signal；

Sending module, if indicating that the central node sends the control signal, the centromere for the notice signaling The instruction according to the notice signaling is put, to described remote after the triggering signaling that the receiving module receives the distant-end node End node sends the control signal.

19. central node as claimed in claim 18, which is characterized in that the control signal includes Physical Broadcast Channel PBCH And/or Physical Synchronisation Channel PSCH.

20. the central node as described in claim 18 or 19, which is characterized in that the sending module is also used to:

After the notice signaling that the receiving module receives that the distant-end node is sent, Xiang Suoshu distant-end node sends wireless Frame；Wherein, the first position for carrying the control signal in the radio frames carries data information；The notice letter It enables and indicates that the central node sends the control signal, and the central node does not receive the institute that the distant-end node is sent Triggering signaling is stated, or, the notice signaling indicates that the central node does not send the control signal.

21. the central node as described in claim 18 or 19, which is characterized in that the central node further includes determining module, For:

After the notice signaling that the receiving module receives that the distant-end node is sent, if during notice signaling instruction is described Heart node sends the control signal, then according to communication protocol or pre-defined rule, determines to the distant-end node and send the control The mode of signal processed is to send the control signal to the distant-end node after the triggering signaling for receiving the distant-end node.

22. the central node as described in claim 18 or 19, which is characterized in that if the notice signaling indicates the centromere Point sends the control signal, then the notice signaling is also used to indicate the central node to described in distant-end node transmission The mode for controlling signal is to send the control signal to the distant-end node after the triggering signaling for receiving the distant-end node.

23. the central node as described in claim 18 or 19, which is characterized in that the sending module is used for:

After the receiving module receives the triggering signaling of the distant-end node, Xiang Suoshu distant-end node sends a control Signal processed；Or

After the receiving module receives the triggering signaling of the distant-end node, multiple institutes continuously are sent to the distant-end node State control signal.

24. central node as claimed in claim 23, which is characterized in that the central node further includes determining module, is used for:

Before the sending module continuously sends multiple control signals to the distant-end node, according to communication protocol or in advance Set pattern then determines the quantity of the control signal continuously transmitted；Or

Before the sending module continuously sends multiple control signals to the distant-end node, according to the notice signaling Instruction determine continuously transmit control signal quantity.

25. the central node as described in claim 18 or 19 or 24, which is characterized in that the sending module is also used to:

When the control signal changes, according to time-domain resource and frequency domain resource that communication protocol or pre-defined rule determine, The control signal after a variation is sent to the distant-end node；Or

When the control signal changes, according to time-domain resource and frequency domain resource that communication protocol or pre-defined rule determine, The control signal after multiple variations is continuously sent to the distant-end node.

26. a kind of distant-end node characterized by comprising

Sending module, for after the distant-end node and central node establish connection, Xiang Suoshu central node to send notice Signaling, the notice signaling are used to indicate whether the central node sends control signal；

Receiving module, if indicating that the central node sends the control signal for the notice signaling, according to described logical The instruction for knowing signaling receives the central node and sends after the sending module sends triggering signaling to the central node The control signal.

27. distant-end node as claimed in claim 26, which is characterized in that the control signal includes Physical Broadcast Channel PBCH And/or Physical Shared Channel PSCH.

28. the distant-end node as described in claim 26 or 27, which is characterized in that the receiving module is also used to:

After the sending module sends notice signaling to the central node, the wireless of the central node transmission is received Frame；Wherein, the first position for carrying the control signal in the radio frames carries data information；The notice letter It enables and indicates that the central node sends the control signal, and the central node does not receive the institute that the distant-end node is sent Triggering signaling is stated, or, the notice signaling indicates that the central node does not send the control signal.

29. the distant-end node as described in claim 26 or 27, which is characterized in that the distant-end node further includes determining module, For:

After the sending module sends notice signaling to the central node, if notice signaling Deictic Center node sends control Signal processed determines that receiving the mode of the control signal is to send out to the central node according to communication protocol or pre-defined rule After sending triggering signaling, the control signal that the central node is sent is received.

30. the distant-end node as described in claim 26 or 27, which is characterized in that if the notice signaling indicates the centromere Point sends the control signal, then the notice signaling is also used to indicate the central node to described in distant-end node transmission The mode for controlling signal is to send the control signal to the distant-end node after the triggering signaling for receiving the distant-end node.

31. the distant-end node as described in claim 26 or 27, which is characterized in that the receiving module is used for:

After the sending module sends triggering signaling to the central node, receive described in one that the central node is sent Control signal；Or

After the sending module sends triggering signaling to the central node, the multiple of the central node transmission are continuously received The control signal.

32. distant-end node as claimed in claim 31, which is characterized in that the distant-end node further includes merging module and acquisition Module；

The merging module, for continuously receiving multiple control signals that the central node is sent in the receiving module Later, merge received the multiple control signal, obtain master control signal；

The acquisition module, for according to the master control signal obtain system control information that the central node is sent or Synchronizing information.

33. the distant-end node as described in claim 26 or 27 or 32, which is characterized in that the receiving module is also used to:

After the sending module sends notice signaling to the central node, determined according to communication protocol or pre-defined rule Time-domain resource and frequency domain resource, the control signal after receiving the variation that the central node is sent；Or

After the sending module sends notice signaling to the central node, determined according to communication protocol or pre-defined rule Time-domain resource and frequency domain resource, the control signal after continuously receiving multiple variations that the central node is sent.

34. the distant-end node as described in claim 26 or 27 or 32, which is characterized in that the notice signaling is also used to indicate institute State the quantity for the control signal that central node continuously transmits.