CN106792786A

CN106792786A - A kind of adjacent frequency measuring method, base station and terminal

Info

Publication number: CN106792786A
Application number: CN201510823944.3A
Authority: CN
Inventors: 柯颋; 侯雪颖; 刘建军; 王锐; 沈晓冬; 童辉
Original assignee: China Mobile Communications Group Co Ltd
Current assignee: China Mobile Communications Group Co Ltd
Priority date: 2015-11-24
Filing date: 2015-11-24
Publication date: 2017-05-31

Abstract

The present invention provides a kind of adjacent frequency measuring method, base station and terminal.The adjacent frequency measuring method is applied to base station side, including：The first descending control is sent to terminal and indicate DCI signalings, be used to indicate adjacent frequency measurement window so that terminal carries out channel quality measurement in indicated adjacent frequency measurement window to member carrier CC to be observed, wherein, CC is the non-present operating carriers of the terminal；The channel quality measurements that receiving terminal is fed back according to channel quality measurement.Such scheme, base station sends adjacent frequency measurement window of the DCI signalings to instruction terminal by terminal, and terminal carries out channel quality measurement in this adjacent frequency measurement window；This mode ensure that terminal carries out channel quality measurement under close to real DL data transmission interferences environment, and then can realize effective terminal carrier selection function.

Description

A kind of adjacent frequency measuring method, base station and terminal

Technical field

The present invention relates to communication technical field, more particularly to a kind of adjacent frequency measuring method, base station and terminal.

Background technology

With the surge of data traffic in mobile Internet, Long Term Evolution (Long is used in unauthorized frequency range Term Evolution, LTE) technology turn into development trend.Unauthorized frequency range is for all of wireless access skill Art (Radio Access Technologies, RAT) and all of operation commercial city are open, different operators Respective RAT systems (such as WIFI and unlicensed spectrum are disposed in unauthorized frequency range with identical right LTE)。

In order to reliably use LTE technologies in unauthorized frequency range, can be unauthorized using authorizing frequency range to aid in Frequency range carries out business transmission, and the reliability of frequency range will be authorized to be combined with the bandwidth resources that unauthorized frequency range is enriched, Lifting system handling capacity while business transmission reliability is ensured.Specifically, awarded non-to ensure LTE The performance of frequency range is weighed, current protocol requirement uses carrier aggregation (Carrier Aggregation, CA) or doubly-linked The mode for connecing uses LTE technologies in unauthorized frequency range.In CA modes, the carrier wave in frequency range will be authorized to make It is main carrier, the carrier wave in unauthorized frequency range as subcarrier is realized non-in the case where frequency range auxiliary is authorized Frequency range access way, auxiliary is authorized to authorize and access (Licensed Assisted Access, LAA).

As shown in figure 1, LCC represents mandate member carrier (Licensed Component Carrier), UCC Represent unauthorized member carrier (Unlicensed Component Carrier)；Wherein, eNB1 is (in LTE Some base station) use multiple UCC (such as 10) simultaneously in unlicensed spectrum, while being multiple (such as 8) UE provides service.It is limited to terminal (UE) ability, each UE can only polymeric part UCC member carriers (for example, UE8 maximums can only polyase 13 UCC).

ENB can be as needed, on the premise of without departing from UE carrier aggregation capacities serviced UE Increase new UCC, or certain poor UCC is substituted for more preferable UCC.It is above-mentioned in order to carry out Operation, eNB configured in advance UE carries out channel on the candidate UCC of one or more non-present operating carriers Mass measurement is simultaneously reported.ENB is based on reported result, with reference to situations such as own load, selects certain channel matter Measure preferable UCC and be allocated to the UE and use.In general, eNB tries one's best as UE selects to disturb Smaller and light load UCC is transmitted.

In order to carry out the selection and replacement of the UCC of terminal, base station need to be in the time of the non-present operating carriers of terminal Selecting carries out adjacent frequency measurement on UCC, in main frequency measurement and the unlicensed spectrum for including authorizing on frequency spectrum Adjacent frequency is measured.

Two kinds of " adjacent frequency measurement " technologies for authorizing and being used on frequency spectrum are introduced first below.

On frequency spectrum is authorized, periodic adjacent frequency channel quality measurement window is define only.

Especially, whether support that cell switchs (small cell on/off) function, adjacent frequency letter for LTE technologies The definition of road mass measurement window is slightly distinguished again.

Scene 1：The LTE versions of small cell on/off functions are not supported

In the LTE versions for not supporting small cell on/off functions, eNB is that UE configures macrocyclic neighbour Frequency channel quality measurement window, referred to as measurement interval (Measurement GAP).And each UE Measurement GAP configurations can be different.

Scene 2：Support the LTE versions of small cell on/off functions

In order to support small cell on/off functions, LTE system newly define cell find reference signal (DRS, discovery reference signal).No matter cell is on states or off states, and eNB can the cycle The transmission DRS signals of property.UE realizes adjacent frequency channel quality measurement by detecting DRS signals.Obviously, it is adjacent Frequency channel quality measurement window needs to match with the transmission cycle of DRS signals.In small cell on/off skills In art, the configuration of the periodic channel quality measurement window is referred to as DRS time of measuring configuration (DRS Measurement timing configuration, DMTC).

In order to improve the efficiency of adjacent frequency measurement, LTE system requirement each eNB in specific carriers uses phase The same configuration of DRS signals and corresponding DMTC configurations.At this moment on the carrier wave, all eNB are simultaneously Send DRS signals so that UE can just have found all of eNB of surrounding without being configured using various DMTC, So as to significantly reduce UE power consumptions.

And in unlicensed spectrum, due to there is listem-before-talk (listen-before-talk, LBT) mechanism, Cause to authorize existing two kinds " adjacent frequency measurement " technology on frequency spectrum to be no longer applicable.LBT is simply introduced first below The characteristics of mechanism, " adjacent frequency measurement " technology then analyzed on existing mandate frequency spectrum is applied to unauthorized frequency Limitation in spectrum.

In unlicensed spectrum, due to different RAT operators (such as WIFI and unlicensed spectrum LTE) portion It is not do interference coordination planning (such as between the website of administration：Bus stop planning (site planning)), therefore not These website simultaneous transmission business are allowed, can otherwise cause stronger to interfere phenomenon.

In order that different RAT systems or with RAT systems different operator it is fair in order, do not conflict and (forbid same When transmission services) compete using unauthorized frequency range, LAA systems need to follow LBT mechanism, i.e., each Before carrying out data transmission (including send downlink (DL) data and send DRS signals), one is first reserved The section time perceives to carrier wave, carries out clear channel assessment (CCA) (Clear Channel Assessment, CCA) Process, with just proceeding by data transfer, and can every time carry out data transmission having maximum when carrier wave is perceived The limitation of duration.Compared with DL data transfers, the DRS signal transmissions in unlicensed spectrum have higher LBT priority.

DRS signal transmissions in unlicensed spectrum are approximate periods.ENB attempts periodically sending DRS Signal.In a cycle, there are one or more possible DRS signals and send subframe position.At one In cycle, eNB orders perform LBT operations to attempt competitive channel access in these possible subframe positions Chance.ENB sends DRS signals in the subframe position of first successful contention to channel access chance.Such as Fruit eNB is competed less than channel access chance in all possible subframe position, then eNB is in this cycle Inside abandon sending DRS signals.

Identical with frequency spectrum is authorized, LAA systems specify that each eNB uses identical DRS on specific UCC Signal is configured and corresponding DMTC configurations.

Especially, in unlicensed spectrum, existing periodic adjacent frequency channel quality measurement window may not It is applicable again.Lower surface analysis reason.

Traditional scheme 1：UE does channel quality measurement in periodic DMTC windows

Problem 1：Channel quality measurements are imperfect.Due to needing to follow LBT mechanism, eNB is not necessarily Channel access chance can be competed within each DRS cycle.And then cause UE in some DRS cycles It is interior to do channel quality measurement.

Problem 2：Channel quality measurements poor availability.On specific UCC, due to LAA systems regulation Each eNB is configured using the configuration of identical DRS signals and corresponding DMTC, with reference to DRS signals With LBT priority higher, multiple eNB are caused simultaneously to be sent out in same subframe with probability higher Send DRS signals.At this moment UE may be simultaneously listened to from multiple eNB in the DMTC windows of part DRS signals, obtain the first channel quality measurements.

And for the DL data transfers of normal LBT priority, it is however generally that, in the adjacent area of UE once Only one of which eNB can compete channel access chance.At this moment UE obtains second channel quality measurements.

Under due to above two scene, interference environment is made a world of difference, therefore two kinds of channel quality measurements can Can there is relatively large deviation.I.e. in unlicensed spectrum, based on " adjacent frequency " channel measured by DRS signals Quality may be much worse than UE in " adjacent frequency " normal work the channel quality actually experienced, therefore, A kind of excessively pessimistic estimation may be obtained based on " adjacent frequency " channel quality measured by DRS signals, from And cause measurement result availability poor.

Traditional scheme 2：UE does channel quality measurement in periodic non-DMTC windows

For the DL data transfers of normal LBT priority, it is however generally that, eNB is in non-DMTC windows Intraoral frequent competition is less than channel access chance.Cause the UE cannot within many adjacent frequency channel quality measurement cycles Channel quality measurement is done, so that channel quality measurements are imperfect.

In sum, the existing adjacent frequency e measurement technology based on periodic measurement window is in unlicensed spectrum No longer it is applicable.

The content of the invention

The technical problem to be solved in the present invention is to provide a kind of adjacent frequency measuring method, base station and terminal, is used to solve The adjacent frequency e measurement technology of certainly existing periodic measurement window is not it is possible that channel quality measurements are complete It is whole, so as to cause the problem of channel quality measurements poor availability.

In order to solve the above-mentioned technical problem, the embodiment of the present invention provides a kind of adjacent frequency measuring method, is applied to base Stand side, including：

The first descending control is sent to terminal and indicate DCI signalings, be used to indicate adjacent frequency measurement window so that eventually End carries out channel quality measurement in indicated adjacent frequency measurement window to member carrier CC to be observed, wherein, CC is the non-present operating carriers of the terminal；

The channel quality measurements that receiving terminal is fed back according to channel quality measurement.

Further, a DCI signalings indicate the initial time of the adjacent frequency measurement window, wherein, it is described The initial time of adjacent frequency measurement window is that the subframe where a DCI signalings adds the first time delay.

Further, the configuration parameter of the adjacent frequency measurement window is believed by the radio resource control RRC of base station Make, host system message block MIB/ accessory system block of information SIB message, the 2nd DCI signalings and base station and terminal Standardization agreement mode in one or more mode be terminal configuration.

Further, the configuration parameter includes cell ID to be observed, CC to be observed marks, the adjacent frequency One or more in the duration of measurement window and the first time delay.

Further, described transmission the step of the first descending control indicates DCI signalings to terminal is specially：

On frequency spectrum is authorized a DCI signalings are sent to terminal；Or

In the unlicensed spectrum of the work at present of the terminal DCI signalings are sent to terminal.

Further, described transmission the step of the first descending control indicates DCI signalings to terminal includes：

Judge whether channel access chance is got on CC to be observed；

After it is determined that getting channel access chance on CC to be observed, a DCI is sent to the terminal Signaling.

Further, the adjacent frequency measuring method also includes：

For terminal configuration is authorizing frequency spectrum, the unlicensed spectrum of terminal work at present and the non-of terminal inoperative to award The channel quality measurements that adjacent frequency measurement window is carried out on one kind of multiple frequency spectrums for weighing frequency spectrum report mechanism.

Further, it is described to report the mechanism to include periodically reporting and/or aperiodicity is reported；Wherein, when matching somebody with somebody Terminal is put using being given the correct time in aperiodicity, it is described for terminal configuration authorize frequency spectrum, terminal work at present it is non- The letter of adjacent frequency measurement window is carried out on one kind of multiple frequency spectrums of the unlicensed spectrum of mandate frequency spectrum and terminal inoperative Road quality measurements are specially the step of reporting mechanism：

By the radio resource control RRC signaling of base station, the auxiliary system information block SIB of host system message block MIB/ One or more in the standardization agreement mode of message, the 3rd DCI signalings and base station and terminal, be terminal What configuration aperiodicity was reported reports time delay；

And reporting of reporting of the aperiodicity is constantly：Subframe where first DCI signalings is reported prolongs When；Or

The initial subframe of the adjacent frequency measurement window reports time delay；Or

The end subframe of the adjacent frequency measurement window reports time delay.

By the radio resource control RRC signaling of base station, the auxiliary system information block SIB of host system message block MIB/ One or more in the standardization agreement mode of message, the 4th DCI signalings and base station and terminal, be terminal What configuration aperiodicity was reported reports time delay；

And by the 5th DCI signalings of base station indicate it is described it is aperiodic report report the moment；Wherein,

The aperiodic subframe constantly where the 5th DCI signalings that reports for reporting reports time delay.

Further, the step of the channel quality measurements that the receiving terminal is fed back according to channel quality measurement It is rapid to be specially：

The non-of frequency spectrum, the unlicensed spectrum of terminal work at present and terminal inoperative is authorized what is configured for terminal Authorize on one kind of multiple frequency spectrums of frequency spectrum, the channel quality measurements that receiving terminal is reported.

The embodiment of the present invention provides a kind of base station, including：

First sending module, DCI signalings are indicated for sending the first descending control to terminal, are used to indicate neighbour Frequency measurement window so that terminal is carried out in indicated adjacent frequency measurement window to member carrier CC to be observed Channel quality measurement, wherein, CC is the non-present operating carriers of the terminal；

First receiver module, for the channel quality measurements that receiving terminal is fed back according to channel quality measurement.

Further, first sending module includes：

Judging unit, for judging whether channel access chance is got on CC to be observed；

Transmitting element, for after determining to get channel access chance on CC to be observed, to the end End sends a DCI signalings.

Further, the base station also includes：

Configuration module, for being that terminal is configured in the unlicensed spectrum including authorizing frequency spectrum, terminal work at present Surveyed with the channel quality that adjacent frequency measurement window is carried out on one kind of multiple frequency spectrums of the unlicensed spectrum of terminal inoperative That measures result reports mechanism；

Notification module, for reporting mechanism to notify terminal by described.

Further, first receiver module specifically for：

The embodiment of the present invention provides a kind of adjacent frequency measuring method, is applied to end side, including：

Receive the first descending control instruction DCI signalings that base station sends；

In the adjacent frequency measurement window indicated by a DCI signalings, member carrier CC to be observed is carried out Channel quality measurement；

The channel quality measurements obtained according to channel quality measurement are sent to base station.

Further, in the adjacent frequency measurement window indicated by a DCI signalings, to it is to be observed into Member includes the step of carrier wave CC carries out channel quality measurement：

According to the DCI signalings for receiving, the initial time of adjacent frequency measurement window, the initial time are determined Subframe where a DCI signalings adds the first time delay；

Start to carry out channel matter to member carrier CC to be observed in the initial time of the adjacent frequency measurement window Measurement.

Further, the channel quality measurements include Reference Signal Received Power RSRP, reference signal Quality of reception RSRQ and the signal intensity for receiving are indicated one or more in RSSI；Wherein,

The reference signal includes public reference signal CRS and/or channel status instruction-reference signal CSI-RS.

Further, the adjacent frequency measuring method also includes：

Receive base station and authorize the unauthorized of frequency spectrum, the unlicensed spectrum of terminal work at present and terminal inoperative The channel quality measurements of the adjacent frequency measurement window of configuration reports mechanism on one kind of multiple frequency spectrums of frequency spectrum.

Further, it is described to report the mechanism to include periodically reporting and/or aperiodicity is reported；

Given the correct time when using on periodically, the channel quality measurements that will be obtained according to channel quality measurement The step of being sent to base station is specially：

When from previous report cycle to the measurement existed this report cycle repeatedly in adjacent frequency measurement window When, report constantly all of channel quality measurements in the first default reporting；Or

In the first default channel quality measurements for reporting constantly and measuring at first of reporting；Or

The last channel quality measurements for measuring are reported constantly in the first default reporting；Or

In the first default average value for reporting constantly and being calculated according to all of channel quality measurements of reporting；

Given the correct time in aperiodicity when using, the channel quality measurement knot that will be obtained according to channel quality measurement The step of fruit is sent to base station is specially：

Second it is default report the moment authorize frequency spectrum, the unlicensed spectrum of terminal work at present and the non-work of terminal On one kind of multiple frequency spectrums of the unlicensed spectrum of work, channel quality measurements are reported into base station；Or

When the 5th DCI signalings of base station transmission are received, in the described non-of the 5th DCI signalings instruction The mandate frequency spectrum, the unlicensed spectrum of terminal work at present and the terminal inoperative that report the moment of periodic report On one kind of multiple frequency spectrums of unlicensed spectrum, channel quality measurements are reported into base station；

Wherein, the described second default reporting is constantly：Subframe where first DCI signalings reports time delay； Or

The end subframe of the adjacent frequency measurement window reports time delay；

The embodiment of the present invention provides a kind of terminal, including：

Second receiver module, the first descending control for receiving base station transmission indicates DCI signalings；

Measurement module, in the adjacent frequency measurement window indicated by a DCI signalings, to it is to be observed into Member carrier wave CC carries out channel quality measurement；

Second sending module, for the channel quality measurements obtained according to channel quality measurement to be sent to Base station.

Further, the measurement module includes：

Determining unit, for according to the DCI signalings for receiving, determining the initial time of adjacent frequency measurement window, The initial time is that the subframe where a DCI signalings adds the first time delay；

Measuring unit, for starting to member carrier to be observed in the initial time of the adjacent frequency measurement window CC carries out channel quality measurement.

Further, the terminal also includes：

3rd receiver module, for receive base station authorize frequency spectrum, the unlicensed spectrum of terminal work at present and The channel quality of the adjacent frequency measurement window configured on one kind of multiple frequency spectrums of the unlicensed spectrum of terminal inoperative is surveyed That measures result reports mechanism.

Further, it is described to report the mechanism to include periodically reporting and/or aperiodicity is reported, when using the cycle Given the correct time in property, second sending module specifically for：

Given the correct time when using in aperiodicity, second sending module specifically for：

The beneficial effects of the invention are as follows：

Such scheme, base station sends adjacent frequency measurement window of the DCI signalings to instruction terminal by terminal, Terminal carries out channel quality measurement in this adjacent frequency measurement window；This kind of mode can ensure terminal close to Channel quality measurement is carried out under real downlink transmission interference environment, and then can be realized effective Terminal carrier selection function.

Brief description of the drawings

Fig. 1 represents carrier aggregation schematic diagram；

Fig. 2 represents the schematic flow sheet of the adjacent frequency measuring method of the base station side of the embodiment of the present invention；

Fig. 3 represents the module diagram of the base station of the embodiment of the present invention；

Fig. 4 represents the schematic flow sheet of the adjacent frequency measuring method of the end side of the embodiment of the present invention；

Fig. 5 represents the module diagram of the terminal of the embodiment of the present invention.

Specific embodiment

It is below in conjunction with accompanying drawing and specifically real to make the object, technical solutions and advantages of the present invention clearer The present invention will be described in detail to apply example.

The present invention is directed to the adjacent frequency e measurement technology of existing periodic measurement window it is possible that channel quality Measurement result is imperfect, so as to cause the problem of channel quality measurements poor availability, there is provided a kind of adjacent frequency Measuring method, base station and terminal.

Embodiment one

As shown in Fig. 2 the adjacent frequency measuring method of the present embodiment is applied to base station side, including：

Step 21, sends the first descending control and indicates DCI signalings to terminal, is used to indicate adjacent frequency measurement window, So that terminal carries out channel quality survey in indicated adjacent frequency measurement window to member carrier CC to be observed Amount；

It should be noted that base station can in the unlicensed spectrum of work at present for authorizing frequency spectrum or terminal to Terminal sends a DCI signalings；Wherein, CC to be observed can be LCC, or UCC, and And CC to be observed is the non-present operating carriers of terminal；And CC to be observed may belong to terminal works This cell, it is also possible to belong to different cell.

It is also desirable to illustrate, the channel quality measurement of terminal is adjacent frequency measurement.

Step 22, the channel quality measurements that receiving terminal is fed back according to channel quality measurement.

It should be noted that a DCI signalings indicate the initial time of the adjacent frequency measurement window, it is also possible to The original position of adjacent frequency measurement window is interpreted as, i.e., is started at the position of which frame backward just for adjacent frequency is measured Window；The moment that the subframe where a DCI signalings can be obtained plus the first time delay is used as adjacent frequency The initial time of measurement window；It should be noted that the first time delay is generally in units of frame, subframe.

It should be noted that the main configuration parameter according to adjacent frequency measurement window of terminal is in adjacent frequency measurement window Carry out channel quality measurement to CC to be observed, the nothing that the configuration parameter of the adjacent frequency measurement window passes through base station Line resources control (RRC) signaling, host system message block (MIB)/accessory system block of information (SIB) message, 2nd DCI signalings and base station and one or more mode in the standardization agreement mode of terminal are terminal configuration； It should be noted that when configuration parameter is matched somebody with somebody with RRC signaling, MIB/SIB message or the 2nd DCI signalings When putting, it is necessary to base station sends RRC signaling, MIB/SIB message or the 2nd DCI letters for carrying the configuration parameter Make to terminal, and work as configuration parameter with the about timing of standardization agreement mode, send any to terminal without base station Information.

It should be noted that the 2nd DCI signalings can be with an above-mentioned DCI signalings for same DCI believes Order, i.e., in adjacent frequency measurement window of the base station by DCI signaling instruction terminals, together by adjacent frequency measurement window Configuration parameter pass through the DCI signaled terminals.

And it should be noted that the configuration parameter includes but is not limited to be that cell ID to be observed (shows the neighbour Need to measure which cell of CC in frequency measurement window), CC to be observed mark (show the adjacent frequency Need channel measurement is carried out to which CC in measurement window), the duration (table of the adjacent frequency measurement window The measurement length of terminal in the bright adjacent frequency measurement window) and the first time delay in one or more；And this continues The unit of duration includes but is not limited to be the one kind in frame, subframe and OFDM (OFDM) symbol.

When the notice of configuration parameter is carried out, mode, RRC are signaled for RRC signaling and/or DCI Signaling and/or DCI signalings can be carried on mandate frequency spectrum, it is also possible to be carried on certain work at present of terminal Unlicensed spectrum on.

Especially, the carrier identification and cell ID to be observed of the CC to be observed, mainly by RRC The mode of signaling and/or DCI signalings notifies terminal, it is preferable that use RRC signaling advice method.And hold The RRC signaling and/or DCI signalings for carrying the carrier identification and cell ID are preferably held by authorizing frequency spectrum Carry.

Especially, the duration T of the adjacent frequency measurement window, can be disappeared by standardization agreement, MIB/SIB The mode of breath, RRC signaling or DCI signalings notifies terminal.Preferably, using standardization agreement, MIB/SIB Message or RRC signaling advice method.

It should be noted that because terminal can only carry out channel quality measurement to the CC for having data is activation, therefore, In the present embodiment, the step 21 when realizing, including：

Step 211, judges whether channel access chance is got on CC to be observed；

Step 212, after it is determined that getting channel access chance on CC to be observed, sends out to the terminal Send a DCI signalings.

It should be noted that terminal can obtain adjacent frequency measurement window according to the DCI signalings for receiving Size；The size of adjacent frequency measurement window can in the following way be determined：

Method 1, base station determines to be competed to channel access chance at the t1 moment, and a length of T1 during data transfer. Base station is done adjacent frequency in [t2, t2+T2] time window and is measured by DCI signal deployments terminal, and ensures t2>=t1, t2+T2<=t1+T1, wherein, t2 is the initial time of adjacent frequency measurement window；

Wherein, explicit instruction T2 (T2 is the duration of the adjacent frequency measurement window) field in the DCI, And terminal only does adjacent frequency measurement in [t2, t2+T2] time window.

Method 2, base station determines to be competed to channel access chance at the t1 moment, and a length of T1 during data transfer. Base station is only in constraints t2>=t1, t2+T2<Under conditions of=t1+T1 disclosure satisfy that, just can be by DCI Signal deployment terminal done in [t2, t2+T2] time window adjacent frequency measurement, wherein, T2 by RRC signaling, MIB/SIB message or standardization agreement mode are arranged in advance.

Method 3, base station determines to be competed to channel access chance at the t1 moment, and a length of T1 during data transfer. Base station is done adjacent frequency in [t2, t2+T2] time window and is measured by DCI signal deployments terminal, wherein, T2 leads to RRC signaling, MIB/SIB message or standardization agreement mode is crossed to arrange in advance.In the method, terminal has Ability by other means detect when data have passed, its duration for [t2, min (t1+T1, T2+T2 adjacent frequency measurement is done in effective observation window)]；Wherein, effective observation window is referred in the sight Survey in window, base station sends DL data just on the observation member carrier.

Method 4, base station determines to be competed to channel access chance at the t1 moment, and a length of T1 during data transfer. Adjacent frequency is done since the t2 moment by DCI signal deployments terminal and is measured in base station.In the method, terminal has energy Power by other means detect when data have passed, and only in effective observation that the duration is [t2, t1+T1] Adjacent frequency measurement is done in window.

It should be noted that above-mentioned steps 211 and step 212 ensure that terminal carries out channel quality measurement Validity, is acyclic (i.e. random) because base station obtains channel access chance, so of the invention In adjacent frequency measurement window be also it is acyclic, i.e., only obtain channel access chance after adjacent frequency just occurs Measurement window.

The step 212 can be realized in the following way：

On frequency spectrum is authorized a DCI signalings are sent to terminal；Or

It should be noted that in order to ensure that base station can smoothly receive the channel quality measurements of terminal, base Standing-meeting shifts to an earlier date the reporting schemes of configurating terminal, therefore, the adjacent frequency measuring method of the present embodiment also includes：

It should be noted that this is reported, mechanism includes periodically reporting and/or aperiodicity is reported.

It is in advance the upper of terminal one channel quality measurements of configuration that so-called periodicity is reported and refers to base station The report cycle.Terminal is default within each cycle to report reporting channel quality measurement result in subframe.

When configurating terminal using periodically on give the correct time, terminal is given the correct time on carrying out, when from previous report cycle to When there is the measurement repeatedly in adjacent frequency measurement window between this report cycle, it is preferable that terminal is according to base Stand configuration, in all of channel quality measurements, the channel quality measurements for measuring at first, finally survey Channel quality measurements and the average value that is calculated according to all of channel quality measurements this is several Planting during channel quality measurements report pattern selects a kind of channel quality measurements to report pattern to be reported； When from previous report cycle to the measurement once in adjacent frequency measurement window is only existed this report cycle when, Terminal is only reported the channel quality measurements in this adjacent frequency measurement window；And terminal can authorized Frequency spectrum can also be reported in unlicensed spectrum, it is preferable that be carried out on the mandate frequency spectrum of predetermined time Report.

It is described for terminal configuration is authorizing frequency spectrum, terminal current when configurating terminal in aperiodicity using giving the correct time Adjacent frequency measurement is carried out on one kind of multiple frequency spectrums of the unlicensed spectrum of work and the unlicensed spectrum of terminal inoperative The channel quality measurements of window have two kinds of implementations the step of reporting mechanism.

The first implementation：

By the mark of the RRC signaling of base station, MIB/SIB message, the 3rd DCI signalings and base station and terminal One or more in standardization protocol mode, be terminal configuration aperiodicity report report delay notification terminal；

The first implementation being implemented as in actual applications：Base station and terminal by standardization agreement, One or more mode in MIB/SIB message and RRC signaling presets and calls time and adjacent frequency measurement window The sequential relationship of mouth.For example：Prescribed terminal is subsequent in the initial subframe or end subframe of adjacent frequency measurement window In q-th subframe authorize frequency spectrum on feedback channel quality measurement result.The channel quality measurements can be with It is channel quality measurements instantaneous in current adjacent frequency measurement window, or is measured in long-term multiple adjacent frequency Average channel quality measurements in window.

Second implementation：

By the mark of the RRC signaling of base station, MIB/SIB message, the 4th DCI signalings and base station and terminal One or more in standardization protocol mode, be terminal configuration aperiodicity report report time delay；

Second implementation being implemented as in actual applications：Base station is by authorizing frequency spectrum and/or non-awarding The DCI signalings of frequency spectrum are weighed, interim instruction terminal feeds back adjacent frequency channel quality measurements in which subframe. For example, base station passes through LCC (or UCC) in q-th subframe after certain adjacent frequency measurement window terminates On DCI signal terminal in the q+m subframes on LCC (or UCC) feedback channel quality survey Amount result.Wherein, q is not a fixed value, is flexibly determined according to traffic scheduling situation by base station；M is Time delay is reported, it explicitly can be carried in DCI signalings, it is also possible to by standardization agreement, MIB/SIB The mode of message or RRC signaling is predefined.After terminal receives above-mentioned DCI signalings, feedback is long-term more Average channel quality measurements in individual adjacent frequency measurement window, or feedback is not yet fed back all recently Adjacent frequency measurement window in average channel quality measurements, or feedback all not yet feeds back recently A certain adjacent frequency measurement window in channel quality measurements.

Simultaneously, it is necessary to explanation is that base station schedules terminals are aperiodic when terminal in aperiodicity using giving the correct time Property report report the moment authorize frequency spectrum, the unlicensed spectrum of terminal work at present and terminal inoperative it is non- Authorize on one kind of multiple frequency spectrums of frequency spectrum, feedback channel quality measurement result；Especially, it should be noted that, such as Fruit base station schedules terminals feedback channel quality measurement result in unlicensed spectrum, and terminal is because LBT mechanism Fail competition to channel access chance on certain scheduled uplink sub-frames, then base station can be changed One unlicensed spectrum continues dispatch terminal feedback channel quality measurement result on other carrier waves.

Reporting for terminal is described in detail below.

When base station is only configured with periodicity reporting schemes for terminal, and terminal only exists acyclic adjacent frequency During the measurement of measurement window, terminal periodically reports resource (refer to authorizing on carrier wave and report resource) In report the measurement result of acyclic adjacent frequency measurement window；And there is the survey of periodicity adjacent frequency in terminal simultaneously Measure window measurement and aperiodicity adjacent frequency measurement window measurement when, terminal is in periodically resource is reported The measurement of the measurement result and acyclic adjacent frequency measurement window of the adjacent frequency measurement window of report cycle simultaneously As a result.

When base station is only configured with aperiodicity reporting schemes for terminal, terminal is authorizing frequency spectrum and/or unauthorized Reporting of reporting aperiodicly on frequency spectrum carries out the reporting, it is necessary to illustrate of acyclic measurement result constantly It is, when giving the correct time on terminal is carried out using unlicensed spectrum, if the current unlicensed spectrum of terminal is unavailable, Terminal can carry out reporting for acyclic measurement result in other unlicensed spectrums of base station scheduling；

When base station is terminal configuration cycle property and during aperiodicity reporting schemes simultaneously, terminal is reported in periodicity Moment report cycle measurement result, reports the moment only to report aperiodicity measurement result in aperiodicity.

It should be noted that above-mentioned channel quality measurements include but is not limited to be that reference signal receives work( Rate (RSRP), Reference Signal Received Quality (RSRQ) and the signal intensity for receiving are indicated in (RSSI) One or more；

Wherein, the reference signal includes that public reference signal (CRS) and/or channel status indicate-reference letter Number (CSI-RS).

Because main so that terminal-pair UCC is measured as an example in the present invention, therefore base station is receiving terminal-pair After the channel quality measurements of UCC, based on the channel quality measurements, with reference to the negative of the UCC for measuring Load situation (including but not limited to interior business loading condition of the base station on the UCC, and the UCC Upper external loading situation), on the premise of without departing from terminal carrier polymerizing power, the suitable UCC of selection is Terminal provides carrier aggregation service, for example, for the terminal for being serviced increases new UCC, or by certain Poor UCC is substituted for more preferable UCC.In general, base station is tried one's best as terminal selection channel quality is preferable (disturbing smaller) and the UCC of light load is transmitted.

The present embodiment, base station is by configurating terminal on the candidate UCC of one or more non-current operating carriers Measure on the UCC base station to the downlink of terminal channel quality, and base station configuration adjacent frequency measure The measurement of the channel quality, this kind of measurement configuration mode are carried out in window, it is ensured that terminal is close to true Downlink transmission interference environment under carry out channel quality measurement, and then can ensure that base station is realized having The terminal carrier selection function of effect.

Embodiment two

As shown in figure 3, the embodiment of the present invention provides a kind of base station, including：

First sending module 31, DCI signalings are indicated for sending the first descending control to terminal, are used to indicate Adjacent frequency measurement window so that terminal is entered in indicated adjacent frequency measurement window to member carrier CC to be observed Row channel quality measurement；

Wherein, CC is the non-present operating carriers of the terminal；

First receiver module 32, for the channel quality measurement knot that receiving terminal is fed back according to channel quality measurement Really.

It should be noted that a DCI signalings indicate the initial time of the adjacent frequency measurement window, its In, the initial time of the adjacent frequency measurement window is that the subframe where a DCI signalings is prolonged plus first When.

It should be noted that the configuration parameter of the adjacent frequency measurement window by base station by RRC signaling, One or more in the standardization agreement mode of MIB/SIB message, the 2nd DCI signalings and base station and terminal Mode is configured for terminal.

Wherein, the configuration parameter includes cell ID to be observed, CC to be observed marks, adjacent frequency measurement One or more in the duration of window and the first time delay.

It should be noted that first sending module 31 can authorize the work at present of frequency spectrum or terminal In unlicensed spectrum a DCI signalings are sent to terminal.

Alternatively, first sending module 31 includes：

Specifically, the transmitting element is used for：

On frequency spectrum is authorized a DCI signalings are sent to terminal；Or

Alternatively, the base station also includes：

Configuration module, for authorizing frequency spectrum, the unlicensed spectrum of terminal work at present and end for terminal configuration The channel quality measurement knot of adjacent frequency measurement window is carried out on one kind of multiple frequency spectrums of the unlicensed spectrum of end inoperative Fruit reports mechanism.

Wherein, this reports the mechanism to include periodically reporting and/or aperiodicity is reported, and when configurating terminal is used Given the correct time in aperiodicity, alternatively, the configuration module specifically for：

Specifically, first receiver module 32 specifically for：

It should be noted that the base station embodiment is the base station corresponding with above-mentioned adjacent frequency measuring method, it is above-mentioned All implementations of adjacent frequency measuring method can also reach identical technology suitable for the base station embodiment Effect.

Embodiment three

Corresponding to the adjacent frequency measuring method of base station side, as shown in figure 4, the adjacent frequency measurement side of the embodiment of the present invention Method is applied to end side, including：

Step 41, receives the first descending control instruction DCI signalings that base station sends；

Wherein, a DCI signalings are mainly used in indicating adjacent frequency measurement window.

Step 42, in the adjacent frequency measurement window indicated by a DCI signalings, to member carrier to be observed CC carries out channel quality measurement；

Wherein, the CC to be observed can be LCC, or UCC, and CC to be observed It is the non-present operating carriers of terminal；And CC to be observed may belong to this cell of terminal works, it is also possible to Belong to different cell.

It should be noted that in step 42, terminal measures associated serving BS in adjacent frequency measurement window The channel quality of the downlink on specific CC, because the mode for carrying out channel quality measurement is this area skill Known to art personnel, no longer it is described in detail herein.

The channel quality measurements obtained according to channel quality measurement are sent to base station by step 43.

Such scheme, terminal is by the adjacent frequency measurement window indicated by the DCI signalings that are sent in base station Channel quality measurement, this kind of mode are carried out to specific CC so that terminal is close to real downlink number According to channel quality measurement is carried out under interference environment, the stronger channel quality measurements of availability are obtained, so that Allow that base station is effectively implemented as terminal and carries out the selection of CC.

Alternatively, the step 42 is specifically included when realizing：

Step 421, according to the DCI signalings for receiving, determines the initial time of adjacent frequency measurement window, institute It is that the subframe where a DCI signalings adds the first time delay to state initial time；

Step 422, starts to carry out channel matter to CC to be observed in the initial time of the adjacent frequency measurement window Measurement.

Terminal is mainly when measuring carries out letter according to the configuration parameter of the adjacent frequency measurement window of base station configuration The measurement of road quality, RRC signaling, the MIB/SIB of the configuration parameter of the adjacent frequency measurement window by base station One or more mode in the standardization agreement mode of message, the 2nd DCI signalings and base station and terminal is for eventually End configuration；

Wherein, the configuration parameter includes cell ID to be observed, CC to be observed marks, the adjacent frequency measurement window One or more in the duration and the first time delay of mouth.

It should be noted that generally base station configurating terminal does not get started channel after DCI signalings are received The measurement of quality, generally requires the survey that channel quality is carried out at the default subframe position for receiving DCI signalings Amount, the default subframe position can be regarded as measurement time delay (the first i.e. above-mentioned time delay), and the measurement time delay can With send DCI signalings when in the DCI signaling fields as the explicit instruction of terminal；Can also be by standardization The modes such as agreement, MIB/SIB message or RRC signaling are the implicit instruction of terminal；And in the present invention, preferentially Using implicit indicating mode.

For example：Assuming that on UCC1 to be observed, base station determines successful contention in the n-th 1 subframes To channel access chance, and down link data is sent from the n-th 2 subframes to n3 subframe；Then base Stand and terminal is signaled in n-th 1+p+k subframe to by DCI in n-th 1+p subframe Channel quality measurement is carried out in n1+p+k+T-1 subframe on UCC1；Wherein,

N1+p represents the subframe moment for sending DCI signalings, and p is certain default process time constant, and p >=1； K is measurement time delay, and T is the duration of adjacent frequency measurement window, and n1+p+k >=n2, n1+p+k+T-1≤n3.

It should be noted that above-mentioned DCI signalings can be sent by base station on frequency spectrum is authorized, it is also possible to by base Stand and sent in the unlicensed spectrum of certain work at present of terminal.

Terminal just can obtain channel quality measurements by the measurement to channel quality, and the channel quality is surveyed Amount result can be including one or more in RSRP, RSRQ and RSSI；And the reference letter for measuring Number include CRS and/or CSI-RS, and the reference signal is typically carried in down link data, terminal is needed The extraction of reference signal is carried out in order to follow-up measurement according to the down link data for receiving.

After measurement obtains channel quality measurements, just need to carry out reporting for channel measurement, and eventually End generally carries out reporting for channel measurement according to the configuration of base station, therefore, the adjacent frequency measurement of the present embodiment Method, also includes：

The channel quality measurements for receiving the adjacent frequency measurement window of base station configuration report mechanism；

Wherein, this reports the mechanism to include periodically reporting and/or during aperiodicity is reported, and aperiodicity is reported Time delay is reported comprising what base station indicated.

Specifically, given the correct time when in use periodically, the specific implementation of the step 43 is：

In the first default average value for reporting constantly and being calculated according to all of channel quality measurements of reporting.

When using being given the correct time in aperiodicity, the specific implementation of the step 43 is：

Because the periodicity of terminal report with the aperiodic mode for reporting base station side adjacent frequency measuring method reality Apply and be described in detail in example, no longer repeated in the present embodiment.

In the present embodiment, configuration of the terminal according to base station side to adjacent frequency measurement window carries out channel quality measurement, And channel quality measurements are fed back into base station so that base station can obtain more accurate and effective channel Quality measurements, such that it is able to carry out the selection and distribution of accurate UCC for terminal.

Example IV

As shown in figure 5, the terminal of the embodiment of the present invention, including：

Second receiver module 51, the first descending control for receiving base station transmission indicates DCI signalings；

Measurement module 52, in the adjacent frequency measurement window indicated by a DCI signalings, to be observed Member carrier CC carries out channel quality measurement；

Second sending module 53, the channel quality measurements for will be obtained according to channel quality measurement send To base station；

Wherein, the channel quality measurements include but is not limited to be in RSRP, RSRQ and RSSI Plant or various；Wherein,

The reference signal of terminal measurement mainly includes CRS and/or CSI-RS.

Specifically, the measurement module 52 includes：

It should be noted that RRC signaling, MIB/ of the configuration parameter of the adjacent frequency measurement window by base station One or more mode in the standardization agreement mode of SIB message, the 2nd DCI signalings and base station and terminal For terminal is configured；Wherein, the configuration parameter includes cell ID to be observed, CC to be observed marks, institute State one or more in the duration and the first time delay of adjacent frequency measurement window.

Alternatively, the terminal also includes：

Wherein, it is described to report the mechanism to include periodically reporting and/or aperiodicity is reported, when using on periodically Give the correct time, second sending module 53 specifically for：

Given the correct time when using in aperiodicity, second sending module 53 specifically for：

Wherein, the described second default reporting is constantly：Subframe where the first DCI signalings is reported Time delay；Or

It should be noted that the terminal embodiment is the terminal corresponding with above-mentioned adjacent frequency measuring method, it is above-mentioned All implementations of adjacent frequency measuring method suitable for the terminal embodiment, can also reach identical technology Effect.

It should also be noted that the above embodiment of the present invention provides a kind of mode of adjacent frequency measurement, with this When the mode of invention realizes that adjacent frequency is measured, base station can also configure periodic on UCC to be measured for terminal DMTC measurement windows so that the DRS signals of capture terminal approximate period are realizing Time and Frequency Synchronization.

Above-described is the preferred embodiment of the present invention, it should be pointed out that for the ordinary people of the art For member, some improvements and modifications can also be made under the premise of principle of the present invention is not departed from, these Improvements and modifications are also within the scope of the present invention.

Claims

1. a kind of adjacent frequency measuring method, is applied to base station side, it is characterised in that including：

2. adjacent frequency measuring method according to claim 1, it is characterised in that a DCI signalings are indicated The initial time of the adjacent frequency measurement window, wherein, the initial time of the adjacent frequency measurement window is described the Subframe where one DCI signalings adds the first time delay.

3. adjacent frequency measuring method according to claim 2, it is characterised in that the adjacent frequency measurement window Configuration parameter by radio resource control RRC signaling, the host system message block MIB/ accessory systems of base station One kind or many in the standardization agreement mode of block of information SIB message, the 2nd DCI signalings and base station and terminal The mode of kind is that terminal is configured.

4. adjacent frequency measuring method according to claim 3, it is characterised in that the configuration parameter includes In cell ID to be observed, CC to be observed marks, the duration and the first time delay of the adjacent frequency measurement window One or more.

5. adjacent frequency measuring method according to claim 1, it is characterised in that described to send the to terminal The step of one descending control indicates DCI signalings is specially：

On frequency spectrum is authorized a DCI signalings are sent to terminal；Or

6. adjacent frequency measuring method according to claim 1, it is characterised in that described to send the to terminal The step of one descending control indicates DCI signalings includes：

Judge whether channel access chance is got on CC to be observed；

7. adjacent frequency measuring method according to claim 1, it is characterised in that the adjacent frequency measuring method Also include：

8. adjacent frequency measuring method according to claim 7, it is characterised in that described to report the mechanism to include Periodically report and/or aperiodicity is reported；Wherein, it is described when configurating terminal in aperiodicity using giving the correct time For terminal configuration is authorizing the unauthorized frequency of frequency spectrum, the unlicensed spectrum of terminal work at present and terminal inoperative The step of the reporting mechanism of channel quality measurements of adjacent frequency measurement window is carried out on one kind of multiple frequency spectrums of spectrum Specially：

9. adjacent frequency measuring method according to claim 7, it is characterised in that described to report the mechanism to include Periodically report and/or aperiodicity is reported；Wherein, it is described when configurating terminal in aperiodicity using giving the correct time For terminal configuration is authorizing the unauthorized frequency of frequency spectrum, the unlicensed spectrum of terminal work at present and terminal inoperative The step of the reporting mechanism of channel quality measurements of adjacent frequency measurement window is carried out on one kind of multiple frequency spectrums of spectrum Specially：

10. adjacent frequency measuring method according to claim 1, it is characterised in that the receiving terminal root It is believed that the step of channel quality measurements of road quality measurement feedback are specially：

A kind of 11. base stations, it is characterised in that including：

12. base stations according to claim 11, it is characterised in that first sending module includes：

13. base stations according to claim 11, it is characterised in that the base station also includes：

Configuration module, for being that terminal is configured in the unlicensed spectrum including authorizing frequency spectrum, terminal work at present Surveyed with the channel quality that adjacent frequency measurement window is carried out on one kind of multiple frequency spectrums of the unlicensed spectrum of terminal inoperative That measures result reports mechanism.

14. base stations according to claim 11, it is characterised in that first receiver module is specifically used In：

A kind of 15. adjacent frequency measuring methods, are applied to end side, it is characterised in that including：

16. adjacent frequency measuring methods according to claim 15, it is characterised in that described in a DCI In adjacent frequency measurement window indicated by signaling, the step of channel quality measurement is carried out to member carrier CC to be observed Suddenly include：

17. adjacent frequency measuring methods according to claim 16, it is characterised in that the adjacent frequency measurement window Radio resource control RRC signaling, host system message block MIB/ auxiliary system of the configuration parameter of mouth by base station One kind in the standardization agreement mode of system block of information SIB message, the 2nd DCI signalings and base station and terminal or Various ways are configured for terminal.

18. adjacent frequency measuring methods according to claim 17, it is characterised in that the configuration parameter bag Include cell ID to be observed, CC to be observed marks, the duration of the adjacent frequency measurement window and the first time delay In one or more.

19. adjacent frequency measuring methods according to claim 15, it is characterised in that the channel quality is surveyed Amount result includes that the signal of Reference Signal Received Power RSRP, Reference Signal Received Quality RSRQ and reception is strong Degree indicates one or more in RSSI；Wherein,

20. adjacent frequency measuring methods according to claim 15, it is characterised in that the adjacent frequency measurement side Method also includes：

21. adjacent frequency measuring methods according to claim 20, it is characterised in that described to report mechanism bag Include and periodically report and/or aperiodicity is reported；

A kind of 22. terminals, it is characterised in that including：

23. terminals according to claim 22, it is characterised in that the measurement module includes：

24. terminals according to claim 22, it is characterised in that the terminal also includes：

25. terminals according to claim 24, it is characterised in that described to report mechanism including periodically Report and/or aperiodicity reported, when using periodically on give the correct time, second sending module specifically for：