CN102652404B

CN102652404B - The simultaneously transponder device of receiving and transmitting signal and method thereof in wireless communication system

Info

Publication number: CN102652404B
Application number: CN201080056234.8A
Authority: CN
Inventors: 朴奎镇; 文诚颢; 权英现; 郑载薰; 赵汉奎
Original assignee: LG Electronics Inc
Current assignee: LG Electronics Inc
Priority date: 2009-12-10
Filing date: 2010-12-10
Publication date: 2015-10-14
Anticipated expiration: 2030-12-10
Also published as: WO2011071337A2; WO2011071337A3; CN102652404A

Abstract

Disclosed in be a kind of base station equipment for receiving and transmitting signal in a wireless communication system and transponder device.This transponder device comprises: receiver, and this receiver receives the signal from base station by the first area of the first descending sub frame in the component carrier of support first radio communication system and the second radio communication system; And transmitter, this transmitter and the described of signal receive simultaneously, send signal by the second area of the first descending sub frame to one or more in following subscriber equipment: the terminal of the terminal using one or more the first kind of the first radio communication system and one or more the Second Types using the second radio communication system.At this, first area and second area are re-used in the first descending sub frame according to frequency division multiplexing (FDM) scheme.

Description

The simultaneously transponder device of receiving and transmitting signal and method thereof in wireless communication system

Technical field

The present invention relates to radio communication, relate more specifically to for sending and the relay node equipment of Received signal strength and method thereof and support these base station equipment simultaneously.

Background technology

As the example of the mobile communication system that the present invention can be applicable to, third generation partner program (3GPP) Long Term Evolution (LTE) or LTE-advanced person (at hereinafter referred to as LTE-A) communication system will schematically be described.

One or more communities can be there are in each eNB.Community is established as the bandwidth using such as 1.25MHz, 2.5MHz, 5MHz, 10MHz, 15MHz or 20MHz, provides descending or uplink service to some UE.Different communities can be established as provides different bandwidth.The data that eNB controls multiple UE send or receive.ENB sends the DL schedule information of descending (DL) data with the time domain/frequency domain of the UE notice transmission data to correspondence, coding, size of data and hybrid automatic repeat-request (HARQ) relevant information.In addition, eNB sends the UL schedule information of up (UL) data to the UE of correspondence, to notify the operable time domain/frequency domain of UE, coding, size of data and HARQ relevant information to this UE.The interface for sending customer service or service control can be used between eNB.

Although radio communication technology has arrived Long Term Evolution (LTE) based on Wideband Code Division Multiple Access (WCDMA) (WCDMA) exploitation, the demand of user and provider and expectation have continued to increase.In addition, because other radio access technologies is developed continuously, need new technological evolvement to guarantee competitiveness high in the future.The flexible use of the reduction of every bit cost, the increase of service availability, frequency band, simple structure, open interface, suitable subscriber equipment (UE) power consumption etc. are needs.

Recently, in 3 gpp, the standardization of the subsequent technology of LTE is carried out.In this manual, above-mentioned technology is called as " LTE-is advanced " or " LTE-A ".LTE system and lte-a system are different from each other in the introducing of system bandwidth and via node.

Lte-a system is intended to the broadband supporting maximum 100MHz.Lte-a system uses carrier aggregation or aggregated bandwidth technology, and carrier aggregation or aggregated bandwidth technology use multiple frequency chunks to realize broadband.In order to use wider frequency band, carrier aggregation makes multiple frequency chunks can use as a large logic frequency band.Can based on the bandwidth of each frequency chunks of the definitions of bandwidth of the system block used in LTE system.Component carrier is used to send each frequency chunks.

In lte-a system, although cover, compensate shadow region improve the throughput of cell boarder and introduce via node in order to Extended Cell, via node can not send and Received signal strength via access link and back haul link simultaneously.But this problem does not solve.

Summary of the invention

Technical problem

An object of the present invention is to provide and a kind ofly to send and the method for Received signal strength at via node in a wireless communication system.

Another object of the present invention is to provide a kind of for sending in a wireless communication system and the relay node equipment of Received signal strength simultaneously.

The technical problem that the present invention solves is not limited to above technical problem, and those skilled in the art can understand other technical problem from following description.

Technical scheme

Object of the present invention can send by providing a kind of via node in a wireless communication system and the method for Received signal strength realizes, the method comprises the following steps: on the component carrier of support first radio communication system and the second radio communication system, receive the signal from base station via the first area of the first descending sub frame, and the second area simultaneously via this first descending sub frame sends signal to one or more in following subscriber equipment: the UE of the subscriber equipment (UE) using at least one first kind of the first radio communication system and at least one Second Type using the second radio communication system, wherein, first area and second area are regions multiplexing by frequency division multiplexing (FDM) scheme in this first descending sub frame.

First area can be included in the first descending sub frame two regions using FDM scheme multiplexing, and these two regions can be positioned at two edges of the bandwidth of component carrier.

In another aspect of the present invention, a kind of via node is in a wireless communication system provided to send and the method for Received signal strength, the method comprises the following steps: the first area via the first sub-frame of uplink on the component carrier of support first radio communication system and the second radio communication system sends signal to base station, and simultaneously receive the signal from one or more subscriber equipment in following subscriber equipment via the second area of this first sub-frame of uplink: the UE using the subscriber equipment (UE) of at least one first kind of the first radio communication system and at least one Second Type of use the second radio communication system, wherein, this first area and second area are regions multiplexing by frequency division multiplexing (FDM) scheme in the first sub-frame of uplink.

First area can be included in the first sub-frame of uplink two regions using FDM scheme multiplexing, and these two regions can be positioned at two edges of the bandwidth of described component carrier.

In another aspect of the present invention, there is provided a kind of for sending in a wireless communication system and the relay node equipment of Received signal strength, this relay node equipment comprises: receiver, and this receiver is built into and receives the signal from base station via the first area of the first descending sub frame on the component carrier of support first radio communication system and the second radio communication system; And transmitter, this transmitter is built into, the while of with reception, second area via the first descending sub frame sends signal to one or more in following subscriber equipment: the UE of the subscriber equipment (UE) using at least one first kind of the first radio communication system and at least one Second Type using the second radio communication system, wherein, described first area and second area are regions multiplexing by frequency division multiplexing (FDM) scheme in the first descending sub frame.

In another aspect of the present invention, there is provided a kind of for sending in a wireless communication system and the relay node equipment of Received signal strength, this relay node equipment comprises: transmitter, and the first area that this transmitter is built into via the first sub-frame of uplink on the component carrier of support first radio communication system and the second radio communication system sends signal to base station; And receiver, this receiver is built into, the while of with transmission, second area via the first sub-frame of uplink receives the signal from one or more in following subscriber equipment: the UE of the subscriber equipment (UE) using at least one first kind of the first radio communication system and at least one Second Type using the second radio communication system, wherein, first area and second area are regions multiplexing by frequency division multiplexing (FDM) scheme in the first sub-frame of uplink.

Beneficial effect

According to the present invention, via node effectively can send signal to subscriber equipment (UE) and not disturb from while base station (eNB) Received signal strength via access link via back haul link.

Effect of the present invention is not limited to above-mentioned effect, according to following description, will not become obvious for those skilled in the art in other effect described herein.

Accompanying drawing explanation

Accompanying drawing is included in this application to provide a further understanding of the present invention, and to be attached in the application and to form a application's part, and accompanying drawing exemplified with embodiments of the present invention, and is used from specification one and explains principle of the present invention.In the accompanying drawings:

Fig. 1 is the figure of the structure that relay return link in wireless communication system and relaying access link are shown;

Fig. 2 is the block diagram of the structure that eNB 205 in wireless communication system 200 and via node 210 are shown;

Fig. 3 is the figure of the structure that the radio frame used in the 3GPP LTE system as the example of mobile communication system is shown;

Fig. 4 is the figure of the structure illustrated as the descending and sub-frame of uplink in the 3GPP LTE system of the example of mobile communication system;

Fig. 5 is the figure of the time-frequency resources network that the down link that the present invention uses is shown;

(a) of Fig. 6 is the figure of the concept of the multiple carrier waves illustrated in multiple M AC (MAC) layer-management eNB, and (b) of Fig. 6 is the figure of the concept of the multiple carrier waves illustrated in multiple MAC layer management UE;

(a) of Fig. 7 is (b) of the figure of the concept of the multiple carrier waves in illustration M AC (MAC) layer-management eNB, Fig. 7 is the figure that illustration MAC layer manages the concept of the multiple carrier waves in UE;

Fig. 8 illustrates that the configuration in eNB in LET-A system or via node region is connected to the figure of the down link of UE or via node and the component carrier (CC) of up link;

Fig. 9 illustrates for using TDM scheme come multiplexing and support the figure of structure of frame of back haul link and access link in lte-a system;

Figure 10 illustrates that support according to the present invention is to the figure using FDM scheme to carry out the example of multiplexing access link and back haul link in the component carrier of the backward compatibility of via node;

Figure 11 is the figure of the example of the structure of the frame of the eNB that the frame structure supporting the via node shown in Figure 10 is shown;

Figure 12 is the figure of another example of the structure of the frame of the eNB that the frame structure supporting the via node shown in Figure 10 is shown;

Figure 13 is the figure of the another example of the structure of the frame of the eNB that the frame structure supporting the via node shown in Figure 10 is shown; And

Figure 14 is the figure of an example again of the structure of the frame of the eNB that the frame structure supporting the via node shown in Figure 10 is shown.

Embodiment

To the preferred embodiment of the present invention be described in detail below, be illustrated the example of the preferred embodiment of the present invention in the accompanying drawings.The detailed description set forth below in conjunction with accompanying drawing is intended to as the description to illustrative embodiments, is not intended to represent the only execution mode can putting into practice the concept illustrated in these execution modes.Describe the details comprised to provide the understanding of the present invention in detail.But, to those skilled in the art, be apparent that, can implement and put into practice these instructions when there is no these details.Such as, although suppose that mobile communication system is third generation partner program (3GPP) Long Term Evolution (LTE) or lte-a system in the following description, the present invention can be applied to other mobile communication system of the specific characteristic not comprising 3GPP LTE or lte-a system.

In some instances, eliminate known structure and device to have avoided concept of the present invention fuzzy, and the critical function of construction and device illustrates in form of a block diagram.Running through accompanying drawing uses identical Reference numeral to represent same or similar part.

In the following description, assuming that terminal comprises movement or the fixed-line subscriber end device (UE) of such as subscriber equipment (UE), travelling carriage (MS) or advanced travelling carriage (AMS) and so on, and base station comprise such as Node B, eNodeB, base station or access point (AP) and so on the network end node of terminal communication.Transponder can be called via node (RN), relay station (RS), repeater etc.

In mobile communication system, UE and via node can receive information at down link from eNB, and UE and via node can send information in up link to eNB.The information that UE or via node send or receive comprises data and various control information, and the kind of the information sending or receive according to UE or via node or purposes, there is multiple physical channel.In this manual, use the UE of the radio communication system of LTE system to be called as " LTE UE ", use the UE of the radio communication system of lte-a system to be called as " LTE-AUE ".

Fig. 1 is the figure of the structure that relay return link in wireless communication system and relaying access link are shown.

With reference to Fig. 1, in lte-a system, because the link between introducing eNB and UE is forwarded to the effect of via node, therefore two links with different attribute are applied to uplink and downlink carrier frequency band.Link portions between eNB and via node is defined as back haul link.The transmission using the downlink resource in Frequency Division Duplexing (FDD) (FDD) or time division duplex (TDD) scheme to carry out is called as backhaul downlink, and the transmission using the ascending resource in FDD or TDD scheme to carry out is called as backhaul uplink.

Via node can receive information and send information to eNB via relay backhaul uplink via relay backhaul down link from eNB.In addition, via node can receive information to UE transmission information and via relaying access up link from UE via relaying access downlink.

Fig. 2 is the block diagram of the structure illustrated according to the eNB 205 in communication system 200 of the present invention and via node 210.

Although illustrate an eNB 205 and a via node 210 to simplify wireless communication system 200, wireless communication system 200 can comprise one or more eNB and/or one or more via nodes.

Transmission (Tx) data processor 215, Symbol modulator 220, transmitter 225, Tx/Rx antenna 230, processor 280, memory 285, receiver 290, symbol demodulator 295 can be comprised with reference to Fig. 2, eNB 205 and receive (Rx) data processor 297.Via node 210 can comprise Tx data processor 265, Symbol modulator 270, transmitter 275, Tx/Rx antenna 235, processor 255, memory 260, receiver 240, symbol demodulator 255 and Rx data processor 250.Be included in eNB 205 and via node 210 although an antenna 230 and an antenna 235 are shown as, eNB 205 and via node 210 all can comprise multiple antenna.Therefore, multiple-input and multiple-output (MIMO) system is supported according to eNB 205 of the present invention and via node 210.ENB 205 according to the present invention can support single user (SU)-MIMO scheme and multi-user (MU)-MIMO scheme.

In downstream, Tx data processor 215 receives business datum, formats and encode to the business datum received, and interweaves and modulates (or sign map) encoded business datum, and providing modulated symbol (" data symbol ").Symbol modulator 220 receives and deal with data symbol and frequency pilot sign, and provides symbol stream.

Symbol modulator 220 multiplex data and frequency pilot sign and send through multiplexing data and frequency pilot sign to transmitter 225.Now, the symbol of each transmission can comprise data symbol, frequency pilot sign or spacing wave value.Can in symbol period continuous pilot symbol transmitted.Frequency pilot sign can comprise frequency division multiplexing (FDM) symbol, OFDM (OFDM) symbol, Time Division Multiplexing symbol or code division multiplexing (CDM) symbol.

Transmitter 225 receiving symbol stream, is changed to one or more analog signals by this circulation, and additionally adjusts (such as, amplification, filtering and up-conversion) analog signal, thus produces the downstream signal being suitable for being sent by radio channel.Subsequently, by sending this downstream signal by antenna 230 alignment UE.

The structure of via node 210 will be described below.The antenna 235 of via node receives downstream signal from eNB 205 and provides to receiver 240 signal received.The signal that receiver 240 adjusts (such as, filtering, amplification and down-conversion) receives, digitlization through the signal of adjustment, and obtains sampling.The frequency pilot sign that symbol demodulator 245 demodulation receives and provide the frequency pilot sign through demodulation, for channel estimating to processor 255.

Symbol demodulator 245 receives the frequency response estimated value for down link from processor 255, data demodulates is carried out for the data symbol received, obtain data symbol estim (it is the estimated value of the data symbol sent), and provide this data symbol estim to Rx data processor 250.Rx data processor 250 carries out demodulation (that is, symbol de-maps), deinterleaving and decoding to this data symbol estim, and recovers the business datum of transmission.

The process undertaken by symbol demodulator 245 and Rx data processor 250 is complementary with the process undertaken by Symbol modulator 220 and the Tx data processor 215 of eNB 205.

In via node 210, Tx data processor 265 processes business datum and provides the data symbol in up link.Symbol modulator 270 receives data symbol, and OFDM data symbols and frequency pilot sign, modulate, and provides symbol stream to transmitter 275.Transmitter 275 receives and process symbol stream, produces upward signal, and sends this upward signal by antenna 235 to eNB 205.

In eNB 205, receive upward signal by antenna 230 from via node 210.Receiver 290 processes the upward signal and acquisition sampling that receive.Subsequently, symbol demodulator 295 processes sampling and is provided in frequency pilot sign and the data symbol estim of extended receiver.Rx data processor 297 deal with data sign estimation value and recover from via node 201 send business datum.

The operation of via node 210 and the instruction respectively of the respective processor 255 and 280 of eNB 205 (such as, control, adjustment or management) via node 210 and eNB 205.Processor 255 and 280 can be connected respectively to for program code stored and memory 260 and 285 that is data.Memory 260 and 285 is connected respectively to processor 280 with storage operation system, application program and generic-document.

Processor 255 and 280 can be called as controller, microcontroller, microprocessor, microcomputer etc.

Processor 255 and 280 can be realized by hardware, firmware, software or its combination.If embodiments of the present invention are by hardware implementing, then application-specific integrated circuit (ASIC) (ASIC), digital signal processor (DSP), digital signal processor (DSPD), programmable logic device (PLD), field programmable gate array (FPGA) etc. can be included in processor 255 and 280.

If embodiments of the present invention are by firmware or software simulating, then firmware or software may be constructed such the module, process, function etc. that comprise for performing function of the present invention or operation.Be built into and perform firmware of the present invention or software and can be included in processor 255 and 280, or can be stored in memory 260 and 285, to be performed by processor 255 and 280.

The layer of the radio interface protocol in wireless communication system (network) between eNB 205 and via node 210 can be classified as ground floor (L1), the second layer (L2) and third layer (L3) based on rudimentary three layers of the Open System Interconnection of known communication system (OSI) model.Physical layer belongs to ground floor (L1), and provides formation transfer service by physical channel.Wireless heterogeneous networks (RRC) layer belongs to third layer (L3), and provides the control of the Radio Resource between UE and network.Via node 210 and eNB 205 exchange RRC information each other by cordless communication network and rrc layer.

Fig. 3 is the figure of the structure that the radio frame used in the 3GPP LTE system as the example of mobile communication system is shown.

With reference to Fig. 3, the length (327200T with 10ms of a radio frame _s) and comprise 10 subframes of formed objects.Each subframe has the length of 1ms and comprises two time slots.Each time slot has 0.5ms(15360T _s) length.T _srepresent the sampling time, and by T _s=1/ (15kHz × 2048)=3.2552 × 10 ^-8(about 33ns) represents.Each time slot comprises multiple OFDM symbol or SC-FDMA symbol in the time domain, and comprises multiple Resource Block (RB) in a frequency domain.

In LTE is identical, a RB comprises 12 individual OFDM or SC-FDMA symbols of subcarrier × 7 (6).The transmission time interval (TTI) as the unit interval sent for data can be determined in units of one or more subframes.The structure of radio frame is only illustrate, and the quantity of the OFDM symbol that comprises of the quantity of time slot that comprises of the quantity of subframe that comprises of radio frame or subframe or time slot or SC-FDMA symbol can have various change.

Fig. 4 is the figure of the structure that descending and sub-frame of uplink in the 3GPP LTE system as the example of mobile communication system is shown.

With reference to (a) of Fig. 4, a descending sub frame comprises two time slots in the time domain.Be positioned at maximum three OFDM symbol of the front portion of descending sub frame first time slot corresponding to the controlled area being assigned with control channel, residue OFDM symbol is corresponding to the data field being assigned with Physical Downlink Shared Channel (PDSCH).

The example of the down control channel used in 3GPP LTE system comprises Physical Control Format Indicator Channel (PCFICH), Physical Downlink Control Channel (PDCCH), physical mixed ARQ indicating channel (PHICH) etc.PCFICH sends at the first OFDM symbol place of subframe, and carries the information of the quantity about OFDM symbol (namely, the size of controlled area) for transmitting control channel in subframe.The control information sent by PDCCH is called as Downlink Control Information (DCI).DCI indicates ascending resource assignment information, downlink resource assignment information, up transmission (Tx) power control command etc. for any UE group.PHICH carries confirmation (ACK)/non-acknowledgement (NACK) signal for uplink hybrid automatic repeat request (HARQ).That is, PHICH sends the ack/nack signal for the upstream data sent by UE.

PDCCH as down physical channel will be described below.

ENB can send by PDCCH the activation etc. that the transformat of Physical Downlink Shared Channel (PDSCH) and Resourse Distribute (being called that DL authorizes), the resource allocation information (being called that UL authorizes) of PUSCH, the set for the Tx power control command of each UE in any UE group, Tx power control command, IP phone (VoIP) serve.Multiple PDCCH can be sent in controlled area.UE can monitor multiple PDCCH.PDCCH is made up of the polymerization of or several continuous control channel elements (CCE).The PDCCH be made up of one or several CCE can be sent out after interweaving through sub-block in controlled area.CCE is used to the logical allocation unit to provide PDCCH based on the code check of radio channel state.CCE corresponds to multiple resource element group.The form of PDCCH and the bit number of available PDCCH is determined according to the association between the code check that quantity and the CCE of CCE provide.

The control information sent by PDCCH is called as Downlink Control Information (DCI).Table 1 shows DCI according to DCI format.

Table 1

DCI format	Describe
		DCI format 0	For the scheduling of PUSCH
DCI format 1	For the scheduling of a PDSCH code word
		DCI format 1A	For the random access procedure that compact scheduling and the PDCCH order of a PDSCH code word are initiated
DCI format 1B	For the compact scheduling of a PDSCH code word with precoding information
		DCI format 1C	For the very compact scheduling of a PDSCH code word
DCI format 1D	For the compact scheduling of a PDSCH code word with precoding and power offset information
		DCI format 2	For dispatching PDSCH to the UE of Closed-Loop Spatial Multiplexing mode construction
DCI format 2A	For dispatching PDSCH to the UE of Open-Loop Spatial Multiplexing mode construction
		DCI format 3	For sending the TPC command for PUCCH and PUSCH with 2 bit power adjustment
DCI format 3A	For sending the TPC command for PUCCH and PUSCH adjusted with single-bit power

DCI format 0 indicates ascending resource assignment information, DCI format 1 to 2 indicating downlink resource allocation information, and DCI format 3 and 3A pointer control (TPC) order to the uplink transmission power of any UE group.

Map at eNB the method being used for the resource that PDCCH sends below by briefly describing in LTE system.

Usually, eNB can send Scheduling assistance information and other control information by PDCCH.Physical control channel can be sent in the polymerization of one or more CCE.A CCE comprises nine resource element groups (REG).The quantity not being assigned with the REG of Physical Control Format Indicator Channel (PCFICH) or physics HARQ indicating channel (PHICH) is N _rEG.The CCE that can use in systems in which is 0 to N _cCE-1(at this, ).PDCCH supports multiple forms as shown in table 2.The PDCCH (at this, i represents No. CCE) from the CCE for carrying out i pattern n=0 be made up of n continuous CCE.Multiple PDCCH can be sent via a subframe.

[table 2]

PDCCH form	The quantity of CCE	The quantity of resource element group	The quantity of PDCCH bit
				0	1	9	72
1	2	18	144
				2	4	36	288
3	8	72	576

With reference to table 2, eNB can depend on and send how many Region control information to determine PDCCH form.In addition, UE reads control information etc. in units of CCE, thus reduces expense.Similarly, via node can read control information etc. in units of CCE.In lte-a system, resource element (RE) can with relay control channel element (R-CCE) for unit maps, to send R-PDCCH to any via node.

With reference to (b) of Fig. 4, sub-frame of uplink can be divided into controlled area and data field in a frequency domain.Controlled area is assigned to the Physical Uplink Control Channel (PUCCH) carrying ascending control information.Data field is assigned to the Physical Uplink Shared Channel (PUSCH) carrying user data.In order to maintain single-carrier property, when a UE is different, send PUCCH and PUSCH.The PUCCH of a UE is assigned to the RB couple in a subframe.Belong to the right RB of RB and occupy different subcarriers for two time slots.Thus, the RB distributing to PUCCH carries out " frequency hopping " at boundary of time slot.

Fig. 5 is the figure of the time-frequency resources network that the down link used in the present invention is shown.The downstream signal sent at each time slot can be used as comprising individual subcarrier and the resource grid structure of individual OFDM (OFDM) symbol.At this, represent the quantity of the Resource Block (RB) in down link, represent the quantity of the subcarrier of a structure RB, represent the quantity of the OFDM symbol in a descending time slot. change according to the downstream transmission bandwidth configured in community, and should meet at this, represent the minimum downlink bandwidth that wireless communication system is supported, represent the maximum downstream bandwidth that wireless communication system is supported.Although and but the present invention is not limited to this.The quantity of the OFDM symbol that a time slot comprises can be changed according to the length of Cyclic Prefix (CP) and subcarrier spacing.When multi-antenna transmission, a resource grid can be defined by each antenna port.

Be called as resource element (RE) for each element in the resource grid of each antenna port, and by the index in time slot, (k, l) be identified uniquely.At this, k represents the index of frequency domain, and l represents the index of time domain, and k has 0 ..., and in any one value, l has 0 ..., and in any one value.

Resource Block (RB) shown in Fig. 5 is for describing the mapping relations between physical channel and RE.RB can be divided into Physical Resource Block (PRB) and virtual resource blocks (VRB).A PRB time domain individual continuous OFDM symbol and frequency domain individual continuous subcarrier limits.At this, with it can be predetermined value.Such as, with can given by ground as shown in table 3.Therefore, a PRB comprises individual RE.A PRB corresponds to a time slot in time domain and corresponds to 180kHz in a frequency domain, but the present invention is not limited thereto.

[table 3]

PRB frequency domain have from 0 to value in scope.The quantity n of PRB in a frequency domain _pRBmeet with the relation between the RE (k, l) in a time slot

The size of VRB equals the size of PRB.VRB can be divided into centralized VRB(LVRB) and virtual reality B(DVRB).For the VRB of each type, a pair VRB being arranged in two time slots of a subframe is assigned with single VRB n _vRB.

VRB can have the size identical with PRB.Define the VRB of two types: the first type is centralized VRB(LVRB), the second type is virtual reality B(DVRB).For various types of VRB, two time slots of a subframe with single VRB index (hereinafter referred to as No. VRB) distribute VRB couple.In other words, the first time slot between two time slots belonging to a formation subframe individual VRB be assigned with from 0 to any one index, and belong to the second time slot between two time slots individual VRB distributed similarly from 0 to any one index.

Radio frame structure, descending sub frame and sub-frame of uplink that reference Fig. 3 to Fig. 5 describes, the time-frequency resources network etc. of down link can be applicable between eNB and via node.

Hereafter, the process sending PDCCH will be described in LTE system from eNB to UE.ENB determines PDCCH form according to the DCI that will send to UE, and to control information attached cyclic redundancy check (CRC).According to all sides or the purposes of PDCCH, with radio network temporary identifier (RNTI), mask is carried out to CRC.If PDCCH is for particular UE, then can by the unique identifier mask of UE to CRC.If R-PDCCH is for given trunk node, then can by the unique identifier of this via node such as community-RNTI(C-RNTI) mask is to CRC.Alternatively, if PDCCH is for beep-page message, then can by paging indicator identifiers (P-RNTI) mask to CRC.If PDCCH or R-PDCCH is for system message, then can by system message identifier and system message RNTI(SI-RNTI) mask is to CRC.In order to indicate the response as sending random access guiding to UE or via node, can by Stochastic accessing RNTI(RA-RNTI) mask is to CRC.Table 4 illustrates the example of mask to the identifier of PDCCH and/or R-PDCCH.

[table 4]

If C-RNTI is used, then PDCCH or R-PDCCH carries the control information for corresponding particular UE or given trunk node, if and another RNTI is used, then PDCCH or R-PDCCH carries the common control information received by the whole or multiple UE in community or via node.ENB carries out chnnel coding for by the DCI that addition of CRC, and produces encoded data.ENB carries out rate-matched according to the quantity of the CCE distributing to PDCCH or R-PDCCH form.Afterwards, eNB modulates encoded data and produces modulated symbol.ENB by modulated sign map to physics RE.

Although existing 3GPP LTE version 8(comprises version 9) system is based on based on the transmission on the single carrier frequency band of scalable frequency band size and reception, but LTE-AS can be supported to use in identical time-domain resource (namely, in subframe unit) one or more carrier frequency bands on frequency domain resource (namely, subcarrier or Physical Resource Block (PRB)) from community or eNB to the descending transmission of UE.

Similarly, LTE-AS can be supported to use in identical time-domain resource (namely, in subframe unit) one or more carrier frequency bands on frequency domain resource (namely, subcarrier or Physical Resource Block (PRB)) from any UE to the up transmission of community or eNB.These are called as descending carrier polymerization and up-link carrier polymerization respectively.Fig. 6 and Fig. 7 shows physical layer (PHY) and the layer 2(layer 2(MAC for sending the up of multiple distribution or descending carrier frequency band of the angle from arbitrary cells or UE)) structure.

(a) of Fig. 6 manages the concept of the multiple carrier waves in eNB exemplified with multiple MAC layer, (b) of Fig. 6 manages the concept of the multiple carrier waves in UE exemplified with multiple MAC layer.

As shown in (a) of Fig. 6 and (b) of Fig. 6, MAC layer can control carrier wave 1:1.In the system supporting multicarrier, carrier wave can be used continuously or discontinuously, no matter is up link or down link.TDD system is configured to manage and includes descending and N number of carrier wave that is uplink; FDD system is configured to use multiple carrier wave respectively in up link and down link.FDD system can support asymmetric carrier aggregation, wherein different by the bandwidth of the quantity of carrier wave of being polymerized and/or carrier wave in uplink and downlink.

(a) of Fig. 7 illustrates the concept of the multiple carrier waves in a MAC layer management eNB, and (b) of Fig. 7 illustrates the concept of multiple carrier wave in a MAC layer management UE.

With reference to (a) of Fig. 7 and (b) of Fig. 7, a MAC layer manages one or more frequency carriers, to carry out sending and receiving.Because the frequency carrier managed by a MAC layer must not be continuous print, therefore resource management is more flexibly possible.In (a) of Fig. 7 and (b) of Fig. 7, conveniently, a PHY layer means a CC.At this, a PHY layer must not mean independently radio frequency (RF) device.Usually, one independently RF device mean a PHY layer, but be not limited to this.A RF device can comprise several PHY layer.

Series of physical down control channel (PDCCH) for sending the control information of L1/L2 control signal can send under the state being mapped to the physical resource in independent CC, and the control information of this L1/L2 control signal produces from (a) of support Fig. 7 of MAC layer and the packet scheduler of the structure of (b) of Fig. 7.Now, particularly, multiple PDCCH of Channel Assignment that is that authorize related control information or that be associated with the transmission of the Physical Uplink Shared Channel (PUSCH) of unique PDSCH or independent UE are divided according to the CC sending Physical Shared Channel, encoded and be generated as the PDCCH through dividing, this is called as the PDCCH of coding separately.As another method, the control information for sending the Physical Shared Channel of several component carriers can be built as a PDCCH and be sent out, and this is called as the PDCCH of combined coding.

In order to support descending or up-link carrier polymerization, eNB can distribute want measured and/or report CC, as the preparation process of link of setting up for sending PDCCH and/or PDSCH, if or set up link and make PDCCH and/or PDSCH for sending data and control information be sent out according to the situation based on each particular UE or via node.This is distributed by the CC for any object expresses.Now, eNB can send CC assignment information when CC assignment information is controlled by L3 RRM (RRM) according to the RRC signaling that dynamic characteristic is special via a series of UE or RN is special (the RRC signaling that UE is special or RN is special) controlled, or can send CC assignment information via a series of PDCCH as L1/L2 control signal or via a series of Dedicated Physical Control Channels for only sending control information.

Alternatively, when CC assignment information be grouped scheduler control, can via a series of PDCCH as L1/L2 control signal or via for only sending CC assignment information for the PDCCH of a series of Dedicated Physical Control Channel of sending control information or L2MAC message format.

Fig. 8 illustrates that the configuration in eNB in LET-A system or via node region is connected to the figure of the down link of UE or via node and the CC of up link.

With reference to Fig. 8, show the descending CC of any eNB or via node distribution arbitrarily and up CC.Such as, the quantity of descending CC is N and the quantity of up CC is M.At this, the quantity of descending CC can equal or be different from the quantity of up CC.

In lte-a system, descending CC can be classified as three types.As the first CC, there is the backward compatibility CC supported with the backwards compatibility of LTE rel-8UE.As the second CC, existence can not be accessed the non-backward compatible CC of (that is, only supporting LTE-AUE) by LTE UE.In addition, as the third CC, there is expansion CC.

Backward compatibility CC as the first CC is not only sending PDCCH and PDSCH above according to LTE structure but also is sending the CC of reference signal (RS), primary synchronization channel (P-SCH)/auxiliary synchronization channel (S-SCH) and main broadcast channel (P-BCH), can support that LTE UE accesses.

Non-backward compatible CC as the second CC is sending the CC of PDCCH, PDSCH, RS, P-SCH/S-SCH and P-BCH, to forbid that LTE UE accesses with the form of amendment above.

The first CC(namely, backward compatibility CC) make LTE UE and LTE-A UE can visited cell (or eNB), the second CC(namely, non-backward compatible CC) only make LTE-A UE can visited cell.Expansion CC as the third CC forbids UE visited cell and is called as the auxiliary CC of the first CC or the second CC.P-SCH/S-SCH, P-BCH and PDCCH are not sending as on the expansion CC of the third CC, and whole resources of the third CC may be used for sending PDSCH to UE, or when not operating under sliding-modes (slip mode) for during PDSCH scheduling resource.ENB or via node do not send control information to UE via the third CC.

That is, the first CC and the second CC can be the independent CC type set up a community necessity or can configure a community, and the third CC can be the dependent CC coexisted with one or more independent CC.

In the present invention, as the method supporting via node in based on the wireless communication system of community, the method for the back haul link between the multiplexing eNB shown in Fig. 1 and via node and the access link between via node and UE is proposed.Particularly, that can consider to use frequency division multiplexing (FDM) scheme on the frequency axis to back haul link and access link is multiplexing, to support to send via the signal of back haul link between via node and eNB and receive simultaneously, and send via the signal of access link between via node and UE and receive.Although describe the present invention based on the via node of lte-a system, the present invention can be applicable to the general mobile radio system based on community.

Class1 via node is introduced as via node in lte-a system.Class1 via node has unique physical cell identifier (ID).Class1 via node have perform eNB, for sending the ability of the repertoire of whole physical channels of such as PDSCH, P-SCH, S-SCH, PDCCH and PBCH and so on.Class1 via node looks it is an eNB from the angle of UE.Namely, the via node type of such wireless backhaul eNB is called as Class1 via node: this wireless backhaul eNB is via the back haul link of the radio link configuration Yu higher server that are connected with eNB.

Via node due to Class1 is used as an eNB and carries out work in lte-a system, therefore the via node of Class1 should support backward compatibility (namely, LTE system should be supported), this is the requirement to lte-a system, and therefore should send the common reference signal (CRS) of LTE version 8 via the access link of each subframe.Now, if the back haul link between eNB and via node and the access link between via node and UE operate in identical carrier frequency, then the communication performance of via node may deterioration.That is, if via node via back haul link from eNB Received signal strength, and simultaneously send signal via access link to UE, then communication performance may the obviously deterioration due to self interference.In order to solve the deterioration of communication performance, the frame structure shown in Fig. 9 can be considered.

Fig. 9 illustrates for using TDM scheme come multiplexing and support the figure of structure of frame of back haul link and access link in lte-a system.

As shown in Figure 9, the multiplexing access link of Time Division Multiplexing scheme and back haul link can be used and via node introduces pseudo-MBSFN sub-frame 910, receive for backward compatibility back haul link.But this method is disadvantageous, owing to must modify to hybrid automatic repeat-request (HARQ) two-way time (RTT) of access link and back haul link.

This unfavorable in order to solve, in the present invention, propose the method using the multiplexing back haul link of frequency division multiplexing (FDM) scheme and access link, in identical subframe, support back haul link and access link to enable via node simultaneously.Particularly, the multiplexing method using FDM scheme according to above-mentioned CC type will be described.

Figure 10 illustrates that support according to the present invention is to the figure using FDM scheme to carry out the example of multiplexing access link and back haul link in the CC of the backward compatibility of via node.

As shown in (a) of Figure 10 and (b) of Figure 10, in the subframe that descending (DL) and up (UL) the backward CC that can support at via node is right, use the multiplexing back haul link of FDM scheme and access link.If use FDM scheme multiplex link, then access link can be assigned to the frequency band corresponding as the centre frequency at center with CC 1010 and 1050.In order to support access link, the frequency band 1015 supporting LTE system and the upstream band 1055 supporting LTE system can be distributed, { the bandwidth of 1.4,3,5,10,15,20}MHz that they have.Via node can via the access link in frequency band 1015 and 1055 to LTE UE and LTE-A UE transmission with from LTE UE and LTE-AUE Received signal strength.

Support that the downstream bands 1015 of LTE system comprises PDCCH region 1016 and PDSCH region 1018.Although (a) of Figure 10 shows the situation using the multiplexing PDCCH region 1016 of time division multiplexing (TDD) scheme and PDSCH region 1018, the combination of FDM scheme or TDM scheme and FDM scheme also can be used multiplexing to carry out.

Via node can send control information to one or more in LTE UE and LTE-AUE via PDCCH region 1016, and sends downlink data via PDSCH region 1018.Support that the backhaul region of descending back haul link can be assigned to the frequency resource 1017 and 1019 outside two edges of the downstream bands 1015 supporting LTE system.Use FDM scheme by descending backhaul region 1017 and 1019 and support that the downstream bands 1015 of LTE system is carried out multiplexing.

Via node can via supporting that the downstream bands 1015 of LTE system sends signals to one or more in LTE UE and LTE-A UE, and simultaneously via descending backhaul region 1017 and 1019 from eNB Received signal strength.

Support that the backhaul region of up back haul link can be assigned to the frequency resource 1057 and 1059 outside two edges of the upstream band 1055 supporting LTE system.Use FDM scheme by up backhaul region 1057 and 1059 and support that the upstream band 1055 of LTE system is carried out multiplexing.Support that the upstream band 1055 of LTE system can comprise PUCCH region 1058 and PUSCH region 1059.Although (b) of Figure 10 shows the situation using the multiplexing PUCCH region 1058 of FDM scheme and PUSCH region 1059, the combination of TDM scheme or TDM scheme and FDM scheme also can be used multiplexing to carry out.Via node via PUCCH region 1058 from one or more receiving control informations LTE UE and LTE-A UE, and can receive upstream data via PUSCH region 1059.

Repeater via supporting that the upstream band 1055 of LTE system is from one or more Received signal strength LTE UE and LTE-A UE, and can send signal via up backhaul region 1057 and 1059 to eNB simultaneously.

Sub-frame of uplink shown in (b) of the descending sub frame shown in (a) of Figure 10 and Figure 10 can be applicable to time division duplex (TDD) frame structure and Frequency Division Duplexing (FDD) (FDD) frame structure.

In conjunction with Figure 10, if not via via node descending arbitrarily/sub-frame of uplink in descending/up backhaul region (or link) carry out backhaul sending/receiving, then repeater can use descending/up backhaul region to carry out the sending/receiving of the access link of LTE-AUE.In the case, repeater can via PDCCH region 1016 receiving resource allocation information of the downstream bands 1015 of support LTE system.Although not shown in Figure 10, can be used in for supporting the border between the downstream bands 1015 of LTE system and descending backhaul region 1017 and 1019 to divide the predetermined guard band preventing from disturbing.Similarly, can be used in for supporting the border between the upstream band 1055 of LTE system and up backhaul region 1057 and 1059 to divide the predetermined guard band preventing from disturbing.

In the frame structure of via node, when using the multiplexing access link of FDM scheme and back haul link in backward compatibility CC, the frame structure of eNB is shown in Figure 11.

Figure 11 is the figure of the example of the structure of the frame of the eNB that the frame structure supporting the via node shown in Figure 10 is shown.

As shown in (a) of Figure 11 and (b) of Figure 11, in the subframe that descending (DL) and up (UL) the backward component carrier can supported is right, use the multiplexing back haul link of FDM scheme and access link at eNB.If use FDM scheme multiplex link, then access link can be assigned to the frequency band corresponding as the centre frequency at center with CC 1110 and 1150.In order to support access link, the frequency band 1115 supporting LTE system and the upstream band 1155 supporting LTE system can be distributed, { the bandwidth of 1.4,3,5,10,15,20}MHz that they have.ENB can via frequency band 1115 and 1155 to LTE UE and LTE-A UE transmission with from LTE UE and LTE-A UE Received signal strength.

Support that the downstream bands 1115 of LTE system comprises PDCCH region 1116 and PDSCH region 1118.Although (a) of Figure 11 shows the situation using the multiplexing PDCCH region 1116 of time division multiplexing (TDD) scheme and PDSCH region 1118, the combination of FDM scheme or TDM scheme and FDM scheme also can be used multiplexing to carry out.ENB can send control information to one or more in LTE UE and LTE-A UE via PDCCH region 1116, and sends downlink data via PDSCH region 1118.

Comprise the outside at two edges that can be assigned to the downstream bands 1115 supporting LTE system for LTE-A UE or the PDCCH region of via node and the frequency resource 1117 and 1119 of PDSCH region.Use FDM scheme by frequency resource 1117 and 1119 and support that the downstream bands 1115 of LTE system is multiplexing.ENB can send the PDCCH being used for LTE-A UE or via node in the specific region of the resource area 1117 for LTE-A UE or via node, and sends PDSCH in other specific region.ENB via supporting that the PDCCH region 1116 of the downstream bands 1115 of LTE system sends control information to one or more in LTE UE and LTE-AUE, and can send downlink data via PDSCH 1118.

Support that the upstream band 1155 of LTE system comprises PUCCH region 1156 and PUSCH region 1157.Although (b) of Figure 11 shows the situation using the multiplexing PUCCH region 1156 of FDM scheme and PUSCH region 1157, the combination of TDM scheme or TDM scheme and FDM scheme also can be used multiplexing to carry out.ENB via PUCCH region 1156 from one or more receiving control informations LTE UE and LTE-A UE, and can receive upstream data via PUSCH region 1157.

Comprise the outside at two edges that can be assigned to the upstream band 1155 supporting LTE system for LTE-A UE or the PDCCH region of via node and the frequency resource 1151,1152,1153 and 1154 of PDSCH region.Although show the situation using the multiplexing PUCCH region 1153 and 1154 of FDM scheme and PUSCH region 1151 and 1152, the combination of TDM scheme or TDM scheme and FDM scheme also can be used multiplexing to carry out.ENB can via for the PUCCH region 1153 and 1154 of LTE-AUE or via node and the PUSCH region 1151 and 1152 of LTE-A UE or via node from LTE-A UE or via node receiving control information and upstream data.

Subframe shown in (b) of the subframe shown in (a) of Figure 11 and Figure 11 can be applicable to tdd frame structure and FDM frame structure.Although not shown in (a) of Figure 11, can for supporting the downstream bands 1115 of LTE system and dividing for the border between the PDCCH of LTE-AUE or via node and PDSCH region 1157,1119 the predetermined guard band being used in and preventing from disturbing.Similarly, can for support the downstream bands 1155 of LTE system and for LTE-A UE or via node PUSCH region 1151 and 1152 between border divide the predetermined guard band being used in and preventing from disturbing.

Figure 12 is the figure of another example of the structure of the frame of the eNB that the frame structure supporting the via node shown in Figure 10 is shown.

With reference to Figure 12, new carrier wave can be introduced to support the frequency resource for send/receive through via node backhaul.New carrier wave comprises backward compatibility CC, non-backward compatible CC and expansion CC.

(a) of Figure 12 and (b) of Figure 12 shows the frame structure such as introducing backward compatibility CC, makes the frequency resource of eNB support for send/receive through the backhaul of via node.

Figure 13 is the figure of the another example of the structure of the frame of the eNB that the frame structure supporting the via node shown in Figure 10 is shown.

With reference to (a) of Figure 13 and (b) of Figure 13, a CC 1310 or 1350 has total system bandwidth.The frequency resource be used for through via node backhaul sending/receiving only can be set to RN district 1316,1318,1315 and 1317 by eNB.Can consider in the method for eNB by RN district scheduling PDCCH, PDSCH, PUSCH and PUCCH.Namely, eNB only can send the R-PDCCH of the control information of carrying for via node to via node via RN district 1316 and 1318 at down link.Similarly, eNB only can receive the R-PUSCH of the control information of carrying for via node via RN district 1315 and 1317 in up link.

ENB can send the PDCCH1315 of the control information of carrying for LTE UE and LTE-AUE over the entire frequency band.

With reference to (b) of Figure 13, PUCCH region 1311 and 1313 can be assigned to the frequency resource at two edges being positioned at system bandwidth.

Downlink frame structure shown in (a) of Figure 14 equals the downlink frame structure shown in (a) of Figure 13.But with reference to (b) of Figure 14, PUCCH 1452 and 1454 can not be assigned to two edges of system bandwidth, and can be assigned to RN district, to guarantee the back haul link PUSCH resource in up link.

Can be set to the frame structure of via node and the eNB described so far when via node is introduced in specific cell, and eNB can send the frame structure information of eNB and via node by cell-specific RRC signaling or RN special RRC signaling to via node.

Although the foregoing describe the FDM multiplexing structure of descending/up backward compatibility CC of via node, same structure can be applicable to non-backward compatible CC or expansion CC.In the case, in order to support the access link that arranges in the subframe of the CC of via node according to CC type and support the frequency band of LTE system can be changed to extending bandwidth or do not support the structure of non-backward compatible frequency band of LTE system.

Above-mentioned execution mode is realized by the combination of constitution element of the present invention in a predefined manner and feature.Unless otherwise stated, each component or feature should be considered as being optionally.Each component or feature can be performed and without the need to combining with other component or feature.In addition, some components and/or feature can be combined each other, to form embodiments of the present invention.The order of the operation described in embodiments of the present invention can be changed.Some constitution elements in an execution mode or feature can comprise in another embodiment, or are replaced by the corresponding constitution element of another execution mode or feature.In addition, it is obvious that, some claims quoting specific rights requirement can be combined with other claims of other claim quoted except this specific rights requires, to form execution mode or increase new claim by the mode of amendment after submitting the application to.

To those skilled in the art, be apparent that, various modifications and variations can be made to the present invention without departing from the spirit or scope of the present invention.Therefore, the present invention is intended to contain these modifications and variations fallen within the scope of claims and equivalents thereof of the present invention.

Industrial applicibility

To send and the relay node equipment of Received signal strength and method thereof industrially can be applicable to such as 3GPPLTE, LTE-A or IEEE 802 wireless communication system of system and so on simultaneously.

Claims

1. via node RN in a wireless communication system sends and the method for Received signal strength, said method comprising the steps of:

The downlink component carrier being in support first radio communication system and the second radio communication system at described RN receives the signal from base station BS via the first area of descending sub frame; And

Receive simultaneously with described, on described downlink component carrier, signal is sent via the second area of described descending sub frame to the UE using the user equipment (UE) of at least one first kind of described first radio communication system with at least one Second Type using described second radio communication system by described RN, and

Wherein, described first area and described second area are regions multiplexing by frequency division multiplexing FDM scheme in described descending sub frame;

Wherein, described first area is included in two regions multiplexing by FDM scheme in described descending sub frame, and described two regions are positioned at two edges of the bandwidth of described downlink component carrier.

2. method according to claim 1, described method also comprises:

The frame configuration information of described RN is received from described BS at described RN place;

Wherein, described reception and described transmission are carried out based on described frame configuration information.

3. method according to claim 2, wherein, described frame configuration information is received by radio resource control RRC signaling.

4. via node RN in a wireless communication system sends and the method for Received signal strength, said method comprising the steps of:

First area via sub-frame of uplink on the upstream components carrier wave CC of support first radio communication system and the second radio communication system sends signal from described RN to base station BS; And

Send simultaneously with described, be on described upstream components carrier wave via the UE Received signal strength of the second area of described sub-frame of uplink from the user equipment (UE) of at least one first kind and at least one Second Type of described second radio communication system of use that use described first radio communication system at described RN

Wherein, described first area and described second area are regions multiplexing by frequency division multiplexing FDM scheme in described sub-frame of uplink;

Wherein, described first area is included in two regions multiplexing by FDM scheme in described sub-frame of uplink, and described two regions are positioned at two edges of the bandwidth of described upstream components carrier wave.

5. method according to claim 4, described method also comprises:

At described RN place from described BS received frame configuration information;

6. method according to claim 5, wherein, described frame configuration information is received by radio resource control RRC signaling.

7., for sending in a wireless communication system and the via node RN equipment of Received signal strength, described RN equipment comprises:

Receiver, described receiver is built into and receives the signal from base station BS via the first area of descending sub frame on the downlink component carrier that described RN is in support first radio communication system and the second radio communication system; And

Transmitter, described transmitter is built into, receive simultaneously with described, described downlink component carrier sends signal via the second area of described descending sub frame from described RN to the UE of at least one Second Type using the user equipment (UE) of at least one first kind of described first radio communication system and described second radio communication system of use, and

8. via node RN equipment according to claim 7, wherein, described receiver is also built as the frame configuration information receiving described RN from described BS;

Wherein, described receiver is built as based on described frame configuration information Received signal strength; And

Wherein, described transmitter is built into and sends signal based on described frame configuration information.

9. via node RN equipment according to claim 8, wherein, described frame configuration information is received by radio resource control RRC signaling.

10., for sending in a wireless communication system and the via node RN equipment of Received signal strength, described RN equipment comprises:

Transmitter, the first area that described transmitter is built into via sub-frame of uplink on the upstream components carrier wave of support first radio communication system and the second radio communication system sends signal from described RN to base station BS; And

Receiver, described receiver is built into, send simultaneously with described, via the UE Received signal strength of the second area of described sub-frame of uplink from the user equipment (UE) of at least one first kind and at least one Second Type of described second radio communication system of use that use described first radio communication system on described upstream components carrier wave

Wherein, described first area and described second area are regions multiplexing by frequency division multiplexing FDM scheme in described sub-frame of uplink,

11. via node RN equipment according to claim 10, wherein, described receiver is also built as from described BS received frame configuration information;

12. via node RN equipment according to claim 11, wherein, described frame configuration information is received by radio resource control RRC signaling.