CN108476045A

CN108476045A - System, the method and apparatus of beam tracking and wave beam feedback operation in system based on Wave beam forming

Info

Publication number: CN108476045A
Application number: CN201780006483.8A
Authority: CN
Inventors: 郑柄薰; 文廷敃; 朴承勋; A.阿吉瓦尔; 柳善姬; 郑丁寿
Original assignee: Samsung Electronics Co Ltd
Current assignee: Samsung Electronics Co Ltd
Priority date: 2016-01-14
Filing date: 2017-01-13
Publication date: 2018-08-31
Also published as: EP3387756A4; EP3387756A1; KR20170085428A

Abstract

This disclosure relates to be provided for supporting to surmount pre- 5th generation (5G) or the 5G communication systems of the more high data rate of forth generation (4G) communication system of such as long term evolution (LTE).Provide it is a kind of it is resident in a wireless communication system, the mobility application process of user equipment (UE) in system via multiple-input and multiple-output (MIMO) antenna using Wave beam forming to support transmission/reception of data.This method includes measuring the wave beam measuring reference signals of the different transmission node of Web vector graphic and evolution node B (eNB) transmission and the information of measurement being transmitted to network in the system using multiple wave beams.

Description

The system of beam tracking and wave beam feedback operation in system based on Wave beam forming, Method and apparatus

Technical field

This disclosure relates to a kind of system executing beam tracking and wave beam feedback operation in the system based on Wave beam forming, Method and apparatus.More specifically, this disclosure relates to using multiple-input and multiple-output (multiple input multiple Output, MIMO) antenna user equipment (user equipment, UE) and evolved node B (evolved Node B, ENB the wave beam feedback in the wireless system) coexisted and wave beam management (beam tracking).This disclosure relates to which a kind of use in fact to wave beam Body (eNB) inform by wave beam measure the environment that is coexisted in UE and eNB using mimo antenna of entity UE and wireless communication system or Using the wave beam for the beam information observed and measured in the system of Wave beam forming (especially with the Wave beam forming of mimo antenna) Feedback procedure and a kind of method for continuously tracking wave beam using wave beam feedback procedure.

Background technology

The growth of demand after commercialization in order to meet 4G communication systems to wireless data service, has been made phase Pre- 5G communication systems or improved 5G communication systems are developed when big effort.This is " 5G communication systems " or " pre- 5G communication systems System " is referred to as " surmounting 4G network communicating systems " or " rear long evolving system (long term evolution, LTE) system " One of the reason of.

In order to realize high data transfer rate, 5G communication systems are being developed in extremely high frequency or millimeter wave Implement in the frequency band (for example, frequency band of 60GHz) of (milimeter wave, mmWave).In order to be reduced in 5G communication systems The appearance of spuious electric wave in the frequency band of extremely high frequency energy and the transmitting range for increasing electric wave, are exploring various technologies, example Such as, Wave beam forming, extensive multiple-input and multiple-output (MIMO), full dimension MIMO (full dimensional MIMO, FD-MIMO), Array antenna, analog beam formation, large-scale antenna etc..

In order to be modified to the grid of 5G communication systems, various technologies are developed, for example, evolution is small-sized small Area, high grade small cell, cloud radio access network (cloud radio access network, cloud RAN), super-intensive net Network, device-to-device communication (device to device, D2D), wireless backhaul, mobile network, collaboration communication, coordinating multiple points (cordinated multi-points, CoMP), interference elimination etc..

In addition, for 5G communication systems, other technologies are developed, for example, mixing frequency shift keying (hybrid Frequency-shift keying, FSK) and QAM modulation (FSK and QAM modulation, FQAM) and sliding window Supercomposed coding (sliding window superposition coding, SWSC) (modulates (advanced as higher level code Coding modulation, ACM)), it is filter bank multi-carrier (filter bank multi carrier, FBMC), nonopiate Multiple access (non-orthogonal multiple access, NOMA), Sparse Code multiple access (sparse code multiple Access, SCMA) etc..

Information above is only presented with help and understands the disclosure as background information.Any whether may be used about of the above As the prior art about the disclosure, it is not determined and is not asserted.

Invention content

Technical problem

It is to provide in terms of the disclosure：A kind of method of measuring reference signals, the reference signal are used in maintenance and UE Radio resource control (RRC) connection status identical eNB in transmitting/receiving point have different agreement frameworks environment The wave beam of middle selection transmission/receiving node and UE；A method of feedback metrical information；A kind of change wave beam and transmission/reception The method of node；A kind of distribution is for transmitting/the reference signal of receiving node and for suitable for the method including passing Send/the method for the unique wave beams of UE of the system of receiving node and eNB；A kind of information of the shared resources about distribution of and UE Method；A method of the resource of the feedback for receiving metrical information is sent and distributed with signal；And a kind of change wave beam With the method for transmission/receiving node.

Another aspect of the present disclosure is to provide a kind of method fed back beam information and change wave beam so that UE is periodical Ground measures beam information and reports the information to eNB, and eNB and UE selects the wave beam of limited number and via selected Thus wave beam improves resource utilization to/from transmitting/receiving information each other.

Solution to the problem

According to the one side of the disclosure, a kind of method of the wave beam feedback of terminal is provided.This method includes：Receive wave beam Feed back trigger condition；Determine whether wave beam feedback meets wave beam feedback trigger condition；When judgement wave beam feedback meets wave beam feedback When trigger condition, from medium access control (MAC) layer of terminal triggering wave beam feedback；And based on wave beam feedback triggering, transmission MAC control elements (MAC CE) including wave beam feedback information.

According to another aspect of the present disclosure, a kind of terminal is provided.The terminal includes：Transceiver, for executing signal Transmission and reception；And controller, for receiving wave beam feedback trigger condition, determining whether wave beam feedback meets wave beam feedback and touch Clockwork spring part triggers wave beam feedback from the MAC layer of terminal when judging that wave beam feedback meets wave beam feedback trigger condition and is based on Wave beam feedback triggering transmission includes the MAC CE of wave beam feedback information.

According to another aspect of the present disclosure, a kind of method receiving wave beam feedback in a base station is provided.This method includes： Trigger condition is fed back to terminal transmission wave beam；And from terminal receive include wave beam feedback information MAC CE.When wave beam is fed back When meeting wave beam feedback trigger condition, wave beam feedback information is triggered from the MAC layer of terminal.

According to another aspect of the present disclosure, a kind of base station is provided.Base station includes：Transceiver, the biography for executing signal It send and receives；And controller, for including wave beam feedback to terminal transmission wave beam feedback trigger condition and from terminal reception The MAC CE of information.When wave beam feedback, which meets wave beam, feeds back trigger condition, wave beam feedback information is triggered from the MAC layer of terminal.

From the detailed description for the various embodiments for disclosing the disclosure taken below in conjunction with attached drawing, other sides of the disclosure Face, advantage and notable feature will become obvious those skilled in the art.

Advantageous effect of the invention

All aspects of this disclosure at least solve the above problems and/or disadvantage, and at least provide following advantages.Therefore, originally Disclosed one side be to provide it is a kind of executing beam tracking and wave beam feedback operation in the system based on Wave beam forming be System, method and apparatus.The disclosure is additionally provided in user equipment (UE) and the evolution for using multiple-input and multiple-output (MIMO) antenna Wave beam feedback in the wireless system that type node B (eNB) coexists and wave beam management (beam tracking).

Description of the drawings

From the description taken below in conjunction with attached drawing, the above and other aspects of some embodiments of the disclosure, feature and excellent Point will be apparent from, wherein：

Fig. 1 is the figure for showing multiple-beam system according to an embodiment of the present disclosure；

Fig. 2 to Fig. 5 is to show that the multi-beam that is used to feed back according to various embodiments of the present disclosure identifies The figure of the structure of (identification, ID) and the frame of beam measurement；

Fig. 6 and Fig. 7 be show according to various embodiments of the present disclosure for feeding back beam measurement and the resource of wave beam Frame structure figure；

Fig. 8, which is that description is according to an embodiment of the present disclosure, executes the method that wave beam is measured and fed back for user equipment (UE) Flow chart；

Fig. 9 is the flow chart of the description method according to an embodiment of the present disclosure that wave beam measurement and feedback are executed for UE；

Figure 10 is the description wave beam feedback procedure according to an embodiment of the present disclosure for UE requests to the response of feedback Flow chart；

Figure 11 is that description is according to an embodiment of the present disclosure, is used for when having been allocated for the special feedback resources of periodical UE UE measures wave beam and transmits the flow chart of the method for wave beam feedback；

Figure 12 is that description is according to an embodiment of the present disclosure, is considering about whether reception for evolved node B (eNB) To corresponding confirmation condition in the case of, pass in response to the wave beam feedback information for using the special feedback resources of distribution to transmit Send the flow chart of the method for confirmation；

Figure 13, which is that description is according to an embodiment of the present disclosure, to be come for UE using the random access resource of eNB periodic allocations Execute the flow chart of the method for wave beam feedback；

Figure 14 is that the description service life according to an embodiment of the present disclosure in the case where considering respond request is visited at random Ask that resource executes the flow chart of the method for feedback；

Figure 15 is described according to disclosed embodiment for UE based on the item that whether there is about the allocated resource Part executes the flow chart of the method for feedback；

Figure 16 is the description shared reception interval according to an embodiment of the present disclosure for being configured to eNB wave beams and changing (scanning) Method and lead code transfer approach figure；

Figure 17 is the description shared reception interval according to an embodiment of the present disclosure for being configured to eNB wave beams and changing (scanning) Method and lead code transfer approach figure；

Figure 18 is the description shared reception interval according to an embodiment of the present disclosure for being configured to eNB wave beams and changing (scanning) Method and lead code transfer approach figure；

Figure 19, which is that description is according to an embodiment of the present disclosure, to be considered using the wave beam feedback method by the eNB resources distributed With the flow chart of the feedback method in the case of the initiation uplink beam feedback method of UE；

Figure 20, which is that description is according to an embodiment of the present disclosure, to be considered using the wave beam feedback method by the eNB resources distributed With the flow chart of the feedback method in the case of the initiation uplink beam feedback method of UE；

Figure 21 is that description is according to an embodiment of the present disclosure when the initiation wave beam for executing UE before eNB distributes feedback resources The flow chart of feedback procedure when feedback；

Figure 22 is the flow chart of the initiation feedback transmission using another bandwidth of description UE according to an embodiment of the present disclosure；

Figure 23 be the description initiation wave beam feedback transmission condition according to an embodiment of the present disclosure based on about UE whether by The flow chart of the feedback procedure of the condition of satisfaction；

Figure 24 A and Figure 24 B are that being fed back using the shared wave beams for receiving interval of eNB for embodiment shown in Figure 23 is worked as in description The flow chart of the operation of UE when method is method of random access competition-based；

Figure 25 is the figure for the frame structure for showing the wave beam feedback according to an embodiment of the present disclosure transmitted by UE；

Figure 26 is the figure for the frame structure for showing the wave beam feedback according to an embodiment of the present disclosure transmitted by UE；

Figure 27 A and Figure 27 B are that being fed back using the shared wave beams for receiving interval of eNB for embodiment shown in Figure 23 is worked as in description The flow chart of the operation of UE when method is uncontested method of random access；

Figure 28 be description it is according to an embodiment of the present disclosure for UE using random access protocol come execute wave beam measure and The flow chart of the method for wave beam feedback；

Figure 29 is description usage time threshold value according to an embodiment of the present disclosure, the feedback side based on feedback resource allocation The flow chart of method；

Figure 30, which is that description is according to an embodiment of the present disclosure, to be provided based on the specified time using random access or special feedback The flow chart of the method for source transmission feedback；

Figure 31 A and Figure 32 B are the figures for showing the frame structure changed for wave beam according to various embodiments of the present disclosure；

Figure 32 A and Figure 32 B are the figures for showing the frame structure changed for wave beam according to various embodiments of the present disclosure；

Figure 33 is the flow chart for the wave beam change method for describing eNB according to an embodiment of the present disclosure；

Figure 34 is the figure for describing wave beam feedback method according to an embodiment of the present disclosure；

Figure 35 to Figure 49 is the figure for describing wave beam feedback method according to various embodiments of the present disclosure；

Figure 50 is the block diagram of UE according to an embodiment of the present disclosure；And

Figure 51 is the block diagram of eNB according to an embodiment of the present disclosure.

Throughout the drawings, it should be noted that identical reference numeral describes same or analogous element, feature and structure.

Specific implementation mode

The disclosure of the description to help comprehensive understanding to be limited by claim and its equivalent below with reference to attached drawing is provided Various embodiments.It is described to describe to include various details to help to understand, but these are considered only as illustratively.Therefore, Those skilled in the art it will be recognized that do not depart from the scope of the present disclosure and spirit in the case of, can be to retouching herein The various embodiments stated make various changes and modifications.In addition, for clarity and conciseness, it is convenient to omit to known function and construction Description.

It is described below and is not limited to dictionary meanings with the term and word used in claim, but only used by inventor It enables to clear and consistently understands the disclosure.Therefore, for those skilled in the art it should be clear that right below providing The description of the various embodiments of the disclosure is for illustration purposes only, rather than for limiting by the following claims and their equivalents The purpose of the disclosure of restriction.

It should be understood that unless context is in addition clearly stipulate that otherwise singulative " one ", "one" and "the" refer to including plural number Show object.Thus, for example, including the reference to surface as one or more to the reference of " assembly surface ".

Pass through term " substantially ", it is intended that the characteristic, parameter or value need not be realized accurately, but deviation or variation (including such as tolerance, measurement error, accuracy of measurement limitation and other factors well known by persons skilled in the art) can be with not The characteristic is interfered to be intended to the amount of the effect provided and occur.

Smart phone etc. has begun to be widely used, and the quick increasing that this data for having resulted in user uses It is long.Demand to data use has increased significantly.This means that needing broader bandwidth.For this reason, it may be necessary to use high-frequency.Frequently Rate is higher, and signal is higher according to the attenuation degree of distance.For example, when using 30GHz or higher centre frequencies, due to signal Decay and the overlay area of evolved node B (eNB) is caused to reduce, and this results in the need for using multiple wave beams.Using multiple Wave beam causes delay to increase.

Wireless communication system considers framework as follows：An eNB including multiple available transmission/receiving nodes is supported Wide physical coverage area postpones caused by frequent UE information exchanges to improve and efficiently uses resource.

The example of wireless communication system is：

Distributing antenna system (distributed antenna system, DAS) is by under the control of an eNB Conveyer different from each other/receiver to implement and transmit/receives the physical antenna of identical signal.

Remote radio heads (remote radio head, RRH) system be include antenna and radio frequency (radio Frequency, RF) unit structure, implemented simultaneously by conveyer different from each other under the control of an eNB/receiver And the signal that transmission/reception is different.

Coordinating multiple points (CoMP) transmission/reception system is equipped under the control of the different eNB of one or more each other Different conveyer/receivers and the structure operated in a manner of as follows：Conveyer/receiver and a user are same Step to/from user and at the same time transmitting/receiving identical information or a transmission/receiving node is transmitted to/from user/connects It collects mail and ceases and other conveyers/receiver is silent.

Beam-forming technology according to an embodiment of the present disclosure and system are as follows.

A. analog beam is formed：

A technique for wave beam being formed, to transmit the delivering power of different level by using multiple array antennas It is applied such mode with different phase and antenna ra-diation pattern, obtaining has on physically specified direction The antenna gain of directionality

Not come from multiple-input and multiple-output (MIMO) antenna desired receiver channel information the case where Under, wave beam is set in a desired direction

Only transmission/reception is primary (radiation pattern on other directions is eliminated) in one direction

The intensity of directionality is increased into higher using mutiple antennas, and so that can be in identical power condition Under pass the signal to distance more farther than other antennas, and being formed has relatively large antenna gain (according to the number of antenna Mesh, the antenna gain are beam angle/beam length difference etc.) wave beam

Beam length is longer, however it only supports narrow region

B. digital beam froming：

A technique for multiple orthogonal beams being formed, to use between the antenna about the intensity with different level Multiple channels information before being transmitted according to antenna by different encoding schemes be applied to information as mode, disappear Except in transmission/reception environment of mimo antenna it is expected channel between interference,

Pre-coding scheme is applied to be transmitted to the data of each antenna, and therefore uses different letters as much as possible Road characteristic

It can support Single User MIMO and multiuser MIMO

C. mixed-beam is formed：

Technology that is a kind of while using analog beam formation and digital beam froming

It is a kind of by that will be applied to transmitting antenna according to the different types of pre-coding scheme of antenna and pass through analog wave The wave beam that beam is formed and formed uses the technology of digital beam froming

In the following description, formed based on analog beam, one during digital beam froming and mixed-beam are formed, with And the wave beam that is formed by the Wave beam forming describes implementation of the disclosure example.Occupy can physically or based on frequency/when Between/resource of identifications such as code/signal and be referred to as " Wave beam forming " via the method that resource transmits information.In this situation Under, occupied resource can be applied to all systems for being referred to as wave beam.

The relevant technologies following 3GPP standards, being used in wireless communication technique have the property that.

A. uplink transmission (from platform (station) to the transmission of base station)：

Substantially, transmission is executed via the resource distributed by eNB (base station) and retained

The UE for executing uplink transmission is needed to transmit the request for resource the allocated eNB, (that is, scheduling request (scheduling request, SR)) and to the UE distribution for uplink transmit resource.More specifically, UE is transmitted SR, then via via eNB distribute resource transmission buffer state report (buffer status report, BSR), to The use of eNB informing uplink data is assigned resource, and executes uplink transmission.UE is via with another UE's Competition executes transmission via random access channel competition-based (random access channel, RACH)

B. channel measurement feedback：

- UE is notified of its channel information measured via the technology of related field to eNB.The technology of related field is The channel measurement and feedback executed by physical layer.The example of measured channel information is Reference Signal Received Power (reference signal received power, RSRP), Reference Signal Received Quality (reference signal Received quality, RSRQ), signal-to-noise ratio (signal-to-noise ratio, SNR), Signal to Interference plus Noise Ratio (signal-to-interference-plus-noise ratio, SINR), channel quality indicator (channel quality Indicator, CQI), channel state information reference signals (channel state information-reference Signal, CSI-RS) etc..The information of these types can obtain in a manner of as follows：UE measures the letter transmitted from eNB Number, for example, cell specific reference signal or public reference signal (common reference signal, CRS), dedicated reference Signal (dedicated reference signal, DRS), CSI-RS and demodulated reference signal (demodulation Reference signal, DMRS).

- UE is based on uplink transportation protocol, and obtained information is transmitted via the resource of eNB distribution.Work as related field Wireless communication technique judgement there is no when resource distribute by eNB, without any method for providing information to eNB or Person need not provide information to eNB.

The wireless communication system of related field is transmitted via the frequency channels and time resource that can allow common reception For maintaining internuncial signal (such as, controlling signal and reference signal) so that all users can hear the signal, with Just communication efficiency is improved.

On the contrary, using the Beam Forming System of mimo antenna by different resource (such as, channel, time, wave beam, code Deng) different wave beams is distributed to, and use the resource and wave beam.Beam Forming System is due to retaining and being determined using resource When between the change of beam feature (direction, channel etc.) that occurs and lead to that resource cannot be used.

For example, in the system for being used to transmit/receive using multiple analog beams, UE and eNB selections can be estimated as Specified beams with high performance, and via transmission/reception of selected wave beam execution information.In the case, eNB is pre- First it is preserved for the resource of the uplink transmission of UE, so that used in optimum beam or tool known to eNB when the time is advanced for There is the wave beam of the problem of minimal number.However, the Beam resources retained may be due to UE movement or other variables (for example, prominent The barrier of such as automobile so occurred, weather change, etc.) and lead to the change for undergoing channel.When up-link information by When the characteristic changing of the Beam resources of reservation leads to transmission failure, the technology of related field does not solve the problems, such as this immediately.

Therefore, different resources (such as, channel, time, wave beam, code, etc.) is distributed into different wave beams and made It is needed to exchange wave beam state letter between UE and eNB with the Beam Forming System using mimo antenna of the resource and wave beam Breath, the rapidly change of tracking wave beam and the wave beam administrative skill that the wave beam is applied to the transmission.

It is transmitted via the channel and time resource that can allow common reception for maintaining internuncial signal (such as, Control signal and reference signal) so that all users can hear the technology of the related field of signal in the case of, The state of the channel used may be low quality.In order to solve this problem, when there are another channel of another frequency, low-quality Measure another channel that channel change is another frequency.Alternatively, when meeting radio link failure condition, the skill of related field Art needs to declare failure, and then attempts to reconnect to network.

However, different resources (such as, channel, time, wave beam, code, etc.) is distributed to different wave beams simultaneously Using in the case of the Beam Forming System using mimo antenna of the resource and wave beam, although wave beam used in system Characteristic is lower, but the probability that another available beams will be present in same position is higher.In the case, UE may have via Available beams maintain internuncial chance.Therefore, it is necessary to use the technology of above-mentioned sequence of operations.

In the case of technology (using omnidirectional antenna, the using the system, etc. of digital beam froming) of related field, The state of channel through using may be low quality.In order to solve this problem, low-quality channel changes into the another of another frequency One channel.Alternatively, when meeting radio bearer setup complete (radio link failure, RLF) condition, the skill of related field Art needs to declare failure, and then attempts to reconnect to network.

However, in the case of the system formed using analog beam, although the channel for the wave beam that system has used State becomes low quality, but the probability probability that another available beams will be present in same position is higher.In the case, system Connectivity can be maintained via available beams.

In the case of the technology of related field, UE can use the feedback of channel information that can be only executed via physical layer Carry out the change of the state to eNB announcing resources (especially channel currently in use in the enb).According to the technology of related field, UE receives the specified signal (CRS, DRS, RS, wave beam RS, CSI-RS etc.) transmitted from eNB, channel status is detected, by channel status Information processing and it is encapsulated as feedback information (for example, CQI, RI, PMI etc.), and via being distributed by eNB and be able to carry out uplink Road transmission resource (for example, physical uplink control channel (physical uplink control channel, PUCCH), physical uplink shared channel (physical uplink shared channel, PUSCH) etc.) it is transmitted to eNB Feedback information.Alternatively, UE to eNB transmission uplink transmission request (or for distribute be used for uplink transmission money The request in source), it is assigned resource, and transmit channel state information.

However, different resources (such as, channel, time, wave beam, code, etc.) is distributed to different wave beams simultaneously Using in the case of the Beam Forming System using mimo antenna of the resource and wave beam, UE/eNB has been used unique Resource (for example, analog beam, mixed-beam etc.) probability can be relatively low.In this case it is desirable to which a kind of new agreement, is informed Another available resources of eNB are assigned corresponding resource and use distributed resource later.

Embodiment of the disclosure devises a kind of environment coexisted in UE and eNB using mimo antenna and wireless communication is It unites or using the wave that will be observed and be measured by UE in the case of no delay in the system of Wave beam forming (in particular, multi-beam) Beam information informs wave beam feedback procedure and a kind of method for continuously tracking wave beam using wave beam feedback procedure to eNB.

Fig. 1 is the figure for showing multiple-beam system according to an embodiment of the present disclosure.

Referring to Fig. 1, multiple-beam system includes the UE and eNB (base station) for forming analog beam in all directions.By eNB and The analog beam that UE is used can be formed by multiple small size antenna arrays.One aerial array group of analog beam first use is come Wireless transceiver/reception is executed on one direction.When one or more aerial array groups including that can operate simultaneously, analog wave Beam can once execute Wireless transceiver/reception in one or more directions.

In accordance with an embodiment of the present disclosure, it is distributed by different resources (such as, channel, time, wave beam, code, etc.) To different wave beams and using in the Beam Forming System using mimo antenna of the resource and wave beam, eNB (or transmit/connect Receive node) and UE consider for first use one or more wave beam, use a pair of of wave beam execute transmission/reception environment. For example, when eNB or UE does not use multiple wave beams, for example, when eNB uses a wave beam using one or more wave beams and UE When or when eNB using a wave beam and UE using one or more wave beams when, embodiment provides exchange about available wave The method of the information of beam.

More specifically, UE executes following three processing：(1) beam information measures, (2) provide beam information and (3) change Become wave beam currently in use；Exchange and change the beam information currently in use in identical eNB (or transmission/receiving node)； It is found suitable for the wave beam of corresponding condition；And use corresponding wave beam.By different resource (such as, channel, time, wave Beam, code, etc.) distribute to different wave beams and the Beam Forming System using mimo antenna using the resource and wave beam In, eNB and UE need the channel status of detection transmission/reception wave beam in real time, and maintain and change beam tracking and use channel State.For this reason, it may be necessary to operate below.

A. wave beam measures

Execute the channel that wave beam measures the wave beam pair created with the combination measured by the wave beam between UE and adjacent eNB

Wave beam measurement can periodically or aperiodically be executed by UE or eNB

In the environment of assuming that UE or eNB can measure the channel status of mutual wave beam pair, embodiment of the disclosure is not It is limited by the type of wave beam measurement method

Embodiment of the disclosure assumes environment as follows：UE measures wave beam letter by any method of background technology Breath, updates measured value, and recognize wave beam according to each beam information measurement

B. wave beam feedback or wave beam report

Wave beam feedback is that UE informs that it measures the operation of beam information to eNB

Since transmission node (that is, eNB (or UE)) does not know downlink (or uplink) beam information, so UE (or eNB) needs execute feedback

Beam information feedback periodically or can be executed aperiodically, and UE or eNB can execute wave to each other Beam information is fed back

By UE measured beam information send to as eNB in a manner of describe implementation of the disclosure example.However, answering Understand, the present disclosure is not limited to the wave beam executed by UE feedback or wave beam reports.The embodiment can also be measured wave beam with eNB Information sends mode as UE to and changes.It therefore, below can by the process changed for wave beam feedback and wave beam that UE is executed By by with UE it is same or analogous in a manner of be applied to eNB operation.

In embodiment of the disclosure, wave beam feedback and wave beam feedback information are referred to as wave beam status information (beam State information, BSI) or wave beam refinement information (beam refinement information, BRI).

C. wave beam changes

- eNB or UE can determine wave beam pair to be used later based on the wave beam feedback information of reception

- eNB or UE is able to carry out multiple operations to use identified wave beam pair

Following description provides the general introductions to embodiment of the disclosure.

In executing the eNB/UE systems of communication using analog beam (wave beam with fixed physical direction), Ke Yigai Become available beams.In order to track the wave beam of change and change wave beam currently in use, it is proposed that medium access control (medium Access control, MAC) layer operation.

Embodiment of the disclosure provide it is a kind of by the beam information of measurement feed back to another party agreement and method and A method of changing the wave beam used by both party using feedback.

A. the method for the needs changed to wave beam being determined by UE

When the performance of wave beam currently in use is lower or observes that wave beam more better than wave beam currently in use is (another Wave beam) when, wave beam measures entity (UE) determination and needs to change wave beam currently in use.

- UE is determined to eNB transmission for asking the feedback of beam information and the details of corresponding determination

The wave beam feedback configuration of B.UE

The mark of wave beam for transmitting information is used as feedback

A. when receiving the wave beam ID of the reference signal comprising wave beam ID or known received signal：

A1. include the feedback of corresponding ID

B. when receiving the reference signal of no wave beam ID：

B1. transmit corresponding wave beam receiving time, can from receives frequency position (or corresponding frequency location) (due to The presence of first information) the derived information etc. about eNB antenna ports transmitted, rather than wave beam ID

B2.eNB preserves the wave beam for transmission, transmission timing and the port for transmission, by them and corresponding reception Feedback information mapping, and select wave beam.

The wave beam of C.UE is fed back

Available uplink wave beam feedback method：

A. special feedback：The uplink beam feedback used in a manner of as follows：ENB will be based on scheduling and operate Specified resource (such as, wave beam/time/frequency etc.) distribute to specified UE, and UE transmits beam information to eNB.

B.UL beam scannings are fed back：The uplink beam feedback used in a manner of as follows：Between eNB settings receive Every, scanning available beams, and in the interval of setting, UE (1) is repeated identical about the reception wave beam of eNB different from each other Information transmission, or the specified one or more wave beams of (2) selection and transmitted via selected one or more wave beams Identical information.

Although b1. wave beam changes, it is also transmittable, does not cause any problem.

B2. the specified resource in corresponding interval can be scheduled to specified UE.

B3. corresponding interval can be used so that multiple unspecified UE freely carry out transmission (for example, 3GPP LTE RACH)。

Main wave beam feedback method according to an embodiment of the present disclosure.

A. substantially, UE uses special feedback.When detect need to change wave beam currently in use when, UE execute UL wave beams Scanning feedback.

B. substantially, UE uses special feedback.UE pick out need to change wave beam currently in use in the state of, work as UE When estimating that the performance of the wave beam of related field is relatively low, UE executes UL beam scannings feedback.

C. the feedback method according to various embodiments of the present disclosure that will be described below can be used.

In the following description, operation according to various embodiments of the present disclosure and process are explained.

Term " UE (or terminal) " is referred to as executing the wave beam measurement entity that wave beam measures.Term " evolution node B (eNB) (or base station) " is referred to as wave beam and uses entity, is configured as transmission and is used for the reference signal of wave beam measurement, allocates resources to Wave beam measures entity and using the measurement beam information for measuring Entity feedback by wave beam.

In embodiment of the disclosure, UE serves as the entity for measuring and feeding back for executing wave beam, and eNB is served as and is used for The entity for executing the transmission of beam reference signal and the distribution of resource, however, it should be understood that UE and eNB were not limited to the described above Operation.The embodiment can be changed in a manner of as follows：ENB serves as the entity for measuring and feeding back for executing wave beam, and And UE serves as the entity of the transmission for executing beam reference signal and the distribution of resource.

In the following embodiment of the disclosure, when the analog wave that can be used using entity from wave beam measurement entity and wave beam The wave beam and wave beam that Shu Dangzhong determinations can be estimated as that there is the wave beam of optimum performance to measure entity uses the one of entity When a wave beam, two Wave beam formings, one wave beams of two entities is referred to as " one or more most (or multiple wave beams to) Good wave beam ".Alternatively, " one or more optimum beams " can also be referred to as two independent waves of one or more wave beams pair Beam.In embodiment of the disclosure, " optimum beam " is referred to as from according to the reference letter by wave beam using entity (eNB) transmission In number a pair of of the optimum beam measured, wave beam is used for measuring entity (UE) having of communicating with wave beam using entity (eNB) The wave beam of optimum performance, however, it should be understood that the present disclosure is not limited to optimum beams as defined above.For example, according to the reality of the disclosure The optimum beam for applying example can be used for various meanings.

Wave beam measures the information that entity can be to all wave beams using entity notice about one or more optimum beams pair As feedback.Alternatively, wave beam is measured entity and can will be made using entity about wave beam to corresponding wave beam measurement entity notice (for example, UE can notify the information of the only one wave beam about eNB to corresponding UE, this is only for the information of only one wave beam One wave beam when eNB transmits to corresponding UE/receive information when will be used).

UE, which is executed, to be measured and sends the feedback information based on the measurement to eNB.In the case, feedback information can have There is one of following configuration.

A. use eNB wave beams ID (bit stream, bit diagram)+beam quality measured value (RSRP, RSRQ, CQI, SINR, SNR, RSSI ...) configuration wave beam feedback information.

Fig. 2 is to show the structure according to an embodiment of the present disclosure for feeding back multi-beam ID and the frame of beam measurement Figure.

Referring to Fig. 2, the MAC-CE structures for transmitting N number of beam information (9 bits of ID, 7 bits of BRSRP) are shown Example.

- BI (9 bit)：Indicate the field of beam index

- BRSRP (7 bit)：Indicate the field of the RSRP of wave beam

Although embodiment shown in Fig. 2 by BI be 9 bits and BRSRP be as 7 bits in a manner of describe, It is, it should be appreciated that each field can be created with the bit of any other size.

Fig. 3 is to show the structure according to an embodiment of the present disclosure for feeding back multi-beam ID and the frame of beam measurement Figure.

Referring to Fig. 3, the MAC-CE for transmitting N number of beam information (eNB wave beam ID3 bits, BRSRP7 bits) is shown The example of structure.

- RBI (3 bit)：Indicate the field of beam index

- RB-RSRP (7 bit)：Indicate the field of the reception RSRP of wave beam

-R：Reservation bit is arranged to " 0 "

Although embodiment shown in Fig. 3 by RBI be 9 bits and RB-RSRP be as 7 bits in a manner of describe, However, it is understood that each field can be created with the bit of any other size.

B. eNB wave beams ID (that is, bit stream, bit diagram)+UE wave beams ID (bit stream, bit diagram)+beam quality is used to measure Value (RSRP, RSRQ, CQI, SINR, SNR, RSSI ...) configuration wave beam feedback information.

Fig. 4 is to show the structure according to an embodiment of the present disclosure for feeding back multi-beam ID and the frame of beam measurement Figure.

Referring to Fig. 4, show that (9 bits of eNB ID, 5 bits of UE ID, BRSRP 7 compare for transmitting N number of beam information It is special) MAC-CE structures example.

- BI_1 (9 bit)：Indicate the field of the beam index of eNB

- BI_2 (9 bit)：Indicate the field of the beam index of UE

- BRSRP (7 bit)：Indicate the field of the RSRP of wave beam

Fig. 5 is to show the structure according to an embodiment of the present disclosure for feeding back multi-beam ID and the frame of beam measurement Figure.

Referring to Fig. 5, show for transmit N number of beam information (3 bits of eNB wave beams ID, 3 bits of UE wave beams ID, 7 bits of BRSRP) MAC-CE structures example.

- RBI_1 (3 bit)：Indicate the field of the beam index of eNB

- RBI_2 (3 bit)：Indicate the field of the beam index of UE

- BRSRP (7 bit)：Indicate the field of the RSRP of wave beam

Wave beam ID can be unique wave beam ID in each of eNB and UE.About corresponding wave beam ID information by including It is transmitted in the reference signal measured for wave beam and via reference signal.

Wave beam ID can be the position of the resource of reference signal of the specified transmission for measuring wave beam by each of eNB and UE The wave beam ID (not being unique) set.The reference signal measured for wave beam can be used about corresponding wave beam transmission position Information is encoded or is scrambled, and is then transmitted.Alternatively, the reference signal measured for wave beam can be used about corresponding wave Beam transmits the information of position to create sequence, then can transmit the sequence.

Wave beam ID and wave beam metrical information can control information, radio resource control (radio via such as UL Resource control, RRC) message information element (RRC information element, RRC-IE) etc. various sides Method rather than transmitted via MAC-CE.

Wave beam metrical information can be various measured values, such as, RSRQ, CQI, SNR, SINR, RSSI etc. and RSRP.

C. it uses and specifies as reception resource (such as when the time of UE reception wave beam measuring reference signals, reception position, reception Antenna port etc.) a part eNB wave beams ID and corresponding beam quality measured value (RSRP, RSRQ, CQI, SINR, SNR, RSSI ...) method configuration wave beam feedback information

C1.UE may know that the reception resource of the wave beam measuring reference signals of reception (for example, receiving time, time-gap number, frame Number receives cell ID, transmission node ID, transmitting antenna port, reception antenna port, receives wave beam ID, frequency acceptance band, reception Channel number, reception carrier index, transmission channel name, etc.).

C2. when eNB and UE know the variable be converted to the transmission of wave beam measuring reference signals/reception resource between them Rule when, can transmit including receive resource information rather than receive unique wave beam ID wave beam feedback.

For example, when corresponding eNB transmitting antenna number as preset number each resource (for example, subcarrier, Symbol, time slot, subframe etc.) in repeat when, there is the agreement for transmitting wave beam measuring reference signals

For example, existing for repeating to transmit phase to each specified resource (for example, subframe, period, time slot, subcarrier etc.) With the example of the agreement of wave beam.In the case, which may have with reference to (for example, the frequency band that next free eNB is used Top, bottom and centre, etc.).

Alternatively, in the example for the rule that there is the correct transmission position that may include port, using equation (for example, The mod operations for receiving subcarrier number x have：Mod (x, 2), mod (x, 4), mod (x, 8), mod (x, 10), mod (x, 16) Deng) etc..

Know that the UE of rule can be replaced receiving resource information with wave beam ID and be transmitted corresponding feedback.

Fig. 6 is to show the structure according to an embodiment of the present disclosure for feeding back the frame of beam measurement and the resource of wave beam Figure.

Referring to Fig. 6, show that the delivery port for feeding back wave beam measuring reference signals numbers (3 bit) and wave beam measures The example of the frame structure (MAC-CE) of value.

Port #：Indicate the field of delivery port number.Port # can be receiving port number.

Fig. 7 is to show the structure according to an embodiment of the present disclosure for feeding back the frame of beam measurement and the resource of wave beam Figure.

Referring to Fig. 7, show for feed back be used for wave beam measure the reference signal delivery time (for example, subframe number, when Gap number, symbol number etc.) (6 bit), transmitting antenna port numbering (3 bit) and beam measurement frame structure (MAC-CE) Example (P#=port #).

Time #：Indicate the field of the reference signal delivery time measured for wave beam.Port # can be that receiving port is compiled Number.The reference signal delivery time measured for wave beam can be reference signal receiving time.Reference signal transmission/receiving time Can be resource identifier (for example, channel number, frequency number, time-gap number, frame number, overlay area number etc.) and It is not the time.The size of reference signal transmission/receiving time and transmission/receiving port number is 6 bits and 3 bits respectively, but It is without being limited thereto.

In addition, wave beam feedback transmission frame may include asking to change into wave beam currently in use including transmitting by UE In feedback information by the wave beam used in future (for example, basic wave beam, the first transmission wave beam and the last one transmission wave Beam) 1 bit (or the bit size of specified beams ID, 1 bit indicator for being attached to each wave beam ID) wave beam change Bid indicator.

In the following description, it is explained via various embodiments anti-with the transmission of the wave beam of UE feedback, the wave beam carried out by eNB Present the distribution of resource, the operation of UE and the relevant operation of reception by the eNB wave beam feedbacks carried out.

Uplink transmission resource is distributed in eNB and the system (such as LTE system) of UE is controlled using corresponding resource In, when the UE of related field uses the technology of related field, feedback is transmitted without selecting via following methods.

Fig. 8 is the flow chart of the description method according to an embodiment of the present disclosure that wave beam measurement and feedback are executed for UE.

Referring to Fig. 8, in operation 810, UE measures wave beam.In operation 820, UE is selected excellent based on beam measurement Select wave beam.

In operation 830, UE determines if to receive feedback request from eNB.The presence of feedback request from eNB includes ENB is by the uplink resource allocation fed back for wave beam to the example of UE.

It,, can be via by eNB points in operation 840 when UE receives feedback request from eNB in operation 830 The beam information that the uplink resource matched is measured feeds back to eNB.On the other hand, in operation 830, when UE is not received When feedback request from eNB, due to the unassigned uplink resources for feeding back beam information of UE, so operating In 850, its beam information measured is not transmitted to eNB.In the case, UE terminates the process, or can be divided at it The backward eNB feedback beam informations of uplink resource are matched.

As described above, when UE when transmitting its beam measurement, does not go to eNB's without uplink resource Uplink transmits, until it is assigned with uplink resource by eNB.For example, when the suddenly change that wave beam state occurs When, for example, when the quality of served beams currently in use declines suddenly or when needing using another adjacent beams, UE At the time of appropriate necessary beam information cannot be transmitted to eNB.It is gradually reduced in beam angle and eNB is needed to take turns and be spread In the increased number of extremely high frequency environment for the wave beam for sending/receiving, this problem is shown more obviously.ENB once can only The wave beam of transmission/reception limited number.It is fed back to use desired wave beam to be transmitted to eNB, UE, which needs to wait for be distributed by eNB, to be provided Source reaches the relatively long period, and this is unfavorable.

Therefore, in order to solve this problem, in the Beam Forming System using mimo antenna by different resource (such as, frequency Road, time, wave beam, code, etc.) distribute to different wave beams and using in the case of the resource and wave beam, UE needs to prop up Hold the UE that can trigger and transmit wave beam feedback information, agreement and system.By UE carry out wave beam feedback transmission triggering with compared with Beam measurement is compared to each other, determines the condition whether used about it and transmit mode as information and holds by high level Row, rather than using the resource of distribution and held with the physical layer supported by the wireless communication technique of the related field of LTE etc. The such mode of row feedback executes.

More specifically, the measurement for each wave beam (or each wave beam to) that can be obtained by measuring wave beam measuring signal Value can change according to channel fluctuation as the instantaneous value as wave.The wave beam of this instantaneous value will be used to change into another wave beam Lead to the high risk of the appropriateness changed for performance guarantee and wave beam.Therefore, UE needs considering preset number or more This measured value in the case of take arithmetic mean of instantaneous value/geometrical mean/moving average etc., by the average survey of a wave beam Magnitude determines if that executing wave beam changes compared with the average measurement value of another wave beam.For higher level (MAC, RLC ...) rather than for physical layer, be adapted for carrying out instantaneous wave beam information measurement value is carried out it is average and more different The process of the information of wave beam.In addition, for higher level rather than for physical layer, it is also suitable for true due to corresponding operation Surely transmission wave beam feeds back and selects resource to transmit wave beam feedback.

In embodiment of the disclosure, the higher level of UE executes channel management in cell in a manner of as follows：Pass through The determination of UE rather than the resource by being distributed by eNB determine the feedback information transmission via channel, calculate beam information Average, more different average beam measurement, determines wave beam, and selects resource to transmit wave beam feedback or request resource point Match.Therefore, because method according to an embodiment of the present disclosure executes channel management operation in the higher layers, so it is different from The method that the related field of feedback of channel information is executed in physical layer (PHY).

Fig. 9 is the flow chart of the description method according to an embodiment of the present disclosure that wave beam measurement and feedback are executed for UE.

Referring to Fig. 9, in operation 910, UE measures wave beam.UE receives the beam reference signal (beam transmitted from eNB Reference signal, BRS), about the different beams that BRS wheel flow measurements receive, and obtains UE and receive wave beam pair and each ENB transmits the beam quality measured value of wave beam.

In operation 920, UE selects preferred wave beam.Selected wave beam can be optimum beam.UE surveys beam quality Magnitude is compared to each other, and transmits the best UE of beam selection for each eNB and receive wave beam.In addition, UE with quality from most preferably to minimum Sequence identification eNB executed transmit better wave beam (or wave beam group), and select identified wave beam as preferred wave Beam (or preferably wave beam group).

In operation 930, UE determines the need for changing served beams with another wave beam.In operation 930, when UE is true Determine served beams to need with another wave beam come when changing, in operation 940, the beam information that can be measured feeds back to eNB. In addition, beam information, which can also include wave beam, changes request.On the other hand, in operation 930, when UE determines that served beams do not need When changing, in operation 950, its previous beam information can be fed back to eNB with another wave beam.In addition, in operation 950 In, UE can be omitted the feedback of beam information.

About whether need wave beam feedback transmission UE fixed condition is as follows really.The following conditions are known as wave beam and change triggering item Part or wave beam feed back trigger condition.

A. the channel quality of served beams (scheduling wave beam) (or multiple served beams) or performance are less than specified threshold. According to standard, threshold value can be constant or fixed value, eNB using the values of settings such as RRC information, MAC-CE, PHY DCI or by The value of UE selections.

A1. current beam measured value<Threshold value

A2. measured value can be RSRP, RSRQ, SNR, SINR, CQI, BER, FER, PER, BLER etc..Alternatively, if Measured value is adapted to determine that channel quality, then measured value can be any measured value.

A3. the number of current service wave beam can be one.Alternatively, the number of current service wave beam can be that eNB can To send the one or more of current UE to.When the number of current service wave beam is one or more and one or more wave beams At least one of wave beam beam measurement be less than threshold value when, triggering can be executed.The measured value of all served beams is all small In threshold value, triggering can also be executed.

A4. the threshold value can be that eNB distributes to RRC signals or the absolute value of UE selections, for example, the mistake with estimation PDCCH the corresponding value (for example, 10%, 5%, 2% etc.) of probability.

B. other than served beams (scheduling wave beam), the channel quality or performance of wave beam are greater than or equal to specified threshold

B1. new beam measurement>Threshold value

B2. measured value can be RSRP, RSRQ, SNR, SINR, CQI, BER, FER, PER, BLER etc..Alternatively, if Measured value is adapted to determine that channel quality, then measured value can be any measured value.

B3. the number of new wave beam can be one.Alternatively, the number of new wave beam, which can be eNB, to be passed to current UE The one or more sent.When the number of new wave beam is at least one of one or more and one or more wave beams wave beam When beam measurement is greater than or equal to threshold value, triggering can be executed.When the measured value of all new wave beams is greater than or equal to threshold value, Triggering can also be executed.

B4. the threshold value can be that eNB distributes to RRC signals or the absolute value of UE selections, for example, the mistake with estimation PDCCH the corresponding value (for example, 10%, 5%, 2% etc.) of probability

C. compared with served beams, the channel quality or performance of another wave beam are greater than or equal to specified threshold/offset.

C1. new beam measurement>Current beam measured value+threshold value.

C2. measured value can be RSRP, RSRQ, SNR, SINR, CQI, BER, FER, PER, BLER etc..Alternatively, if Measured value is adapted to determine that channel quality, then measured value can be any measured value.

C3. the number of current/new wave beam can be one.Alternatively, the number of current/new wave beam can be that eNB can With the one or more transmitted to current UE.When the number of current/new wave beam is one or more and one or more new waves When at least one of beam and current beam wave beam meet the condition of item c1, triggering can be executed.When all new wave beams and currently When wave beam meets the condition of item c1, triggering can also be executed.

C4. the threshold value can be that eNB distributes to RRC signals or the absolute value of UE selections, for example, the mistake with estimation PDCCH the corresponding value (for example, 10%, 5%, 2% etc.) of probability.

D. the channel quality of served beams (scheduling wave beam) or performance are less than specified threshold, and in addition to served beams (are adjusted Spend wave beam) except, the channel quality or performance of other wave beams are greater than or equal to specified threshold

D1. (current beam measured value<Threshold_out) ＆ (new beam measurements>threshold_in)

D2. measured value can be RSRP, RSRQ, SNR, SINR, CQI, BER, FER, PER, BLER etc..If measured value is suitable Together in channel quality is determined, then measured value can be any measured value.

E. timer (for example, feedback timer) expires

E1. uplink beam feedback is not transmitted during corresponding timer

E2. uplink resource is not distributed during corresponding timer

E3. uplink transmission is unsuccessfully etc. during corresponding timer.

F. derived served beams (that is, eNB wave beams, UE wave beams or wave beam to) are measured from wave beam and is not included in entire wave beam In preceding K (or K% from top) in the ranking of (that is, eNB wave beams, UE wave beams or wave beam to).

G. derived served beams (that is, eNB wave beams, UE wave beams or wave beam to) are measured from wave beam and is included in entire wave beam In rear K (or K% from bottom) in the ranking of (that is, eNB wave beams, UE wave beams or wave beam to).

H. after using the special feedback resources distributed by eNB transmission feedback, until have passed through a period (timing Device) just receive response (HARQ ACK, RLC ACK, feeding back ACK etc.).

The feedback message that h1.UE is transmitted via previously the allocated special feedback resources can include request in response to right The information of the response (or confirmation) of the eNB for the feedback answered

H2. it can be the bit for the specified location being located in default PHY or MAC message to ask the information of corresponding response (indicator).

H3. it can be predetermined sequence to ask the information of corresponding response.

H4. it needs to receive corresponding response in the predetermined amount of time after transmitting feedback information.

The feedback message that h5.UE is transmitted via previously the allocated special feedback resources does not include the respond request specified Message.However, UE can ask the response from eNB using following presetting method.

H6. a kind of method can be preset, so that transmitting the response to each feedback message always.

H7. a kind of method can be preset, so that UE and eNB exchanges signal/message each other before transmitting feedback message, Then eNB transmits the response about several feedback messages (one or more feedback messages) to UE

H8. a kind of method can be preset, so that UE and eNB exchanges signal/message each other before transmitting feedback message, Then eNB transmits the response about the feedback message transmitted before being destroyed/eliminate in condition to UE.

Below with reference to Figure 10 descriptions and the relevant embodiments of item H.

Figure 10 is the description wave beam feedback procedure according to an embodiment of the present disclosure for UE requests to the response of feedback Flow chart.

Referring to Figure 10, wave beam measures entity 1010 and transmits respond request using entity 1020 to wave beam, and receives from it sound It answers.It is UE that wave beam, which measures entity 1010, and wave beam is eNB using entity 1020.However, it should be understood that wave beam measurement entity can To be eNB, and wave beam can be UE using entity.

In operation 1040, wave beam can measure entity 1010 to wave beam using entity 1020 and distribute feedback resources.Feedback Resource can be periodically special feedback resources.In operation 1045, wave beam can will be about being distributed using entity 1020 The information of feedback resources is transmitted to wave beam and measures entity 1010.Operation 1040 and 1045 may be generally referred to as " feedback resource allocation ". Wave beam can use the optimum beam being being currently used to measure entity 1010 to wave beam and transmit about feedback using entity 1020 The information of resource.In operation 1050, the reference signal measured for wave beam can be transmitted to wave by wave beam using entity 1020 Beam measures entity 1010.Wave beam can will be transmitted to wave beam using entity 1020 for the wave beam measuring reference signals of each wave beam Measure entity 1010.

In operation 1055, wave beam measures entity 1010 and measures wave beam.Wave beam, which measures entity 1010, can be based on wave beam survey Result is measured to select optimum beam.Since the foregoing describe wave beam measurement method and beam selection methods, so will omit below Detailed description.

In operation 1060, wave beam, which measures entity 1010, to transmit beam measurement using entity 1020 to wave beam. Beam measurement may include the content of the feedback resources described in embodiment of the disclosure above.Wave beam measures entity 1010 can use the special feedback resources distributed to use the transmission feedback of entity 1020 to wave beam.In embodiment of the disclosure In, wave beam, which measures entity 1010, the feedback for including respond request is transmitted using entity 1020 to wave beam.It is retouched in item H above The content of respond request is stated.

In operation 1065, wave beam measures entity 1010 and can determine whether it receives the response to feedback.It is operating In 1065, when wave beam, which measures entity 1010, receives the response to feedback, picks out wave beam and connect using entity 1020 It receives and the information about optimum beam that entity 1010 is fed back is measured by wave beam, and transmission/reception wave beam can be changed into Optimum beam.

On the other hand, it in operation 1065, when wave beam, which measures entity 1010, does not receive the confirmation in response to feedback, is grasping In making 1070, it is able to carry out wave beam feedback.It is anti-that wave beam measurement entity 1010 can execute wave beam using random access protocol Feedback.Wave beam, which measures entity 1010, to execute feedback using current optimum beam according to beam measurement.Wave beam measures real Body 1010 is fed back to wave beam using the transmission of entity 1020 in operation 1071, and is received from it in response to anti-in operation 1072 The confirmation of feedback.When wave beam, which measures entity 1010, does not receive the confirmation in response to feedback in operation 1072, operating Feedback is retransmitted to wave beam in 1073 and uses entity 1020, and is received from it in operation 1074 in response to feeding back really Recognize.Compared with the process of related field, transmission and response process using random access protocol for feedback information are new. More specifically, wave beam measures, feedback transmission is repeated several times in entity 1010 and response receives, until it uses entity 1020 from wave beam Until receiving confirmation.

In operation 1075, wave beam can recognize optimum beam using it using entity 1020 and carry out assignment period Special reverse Present resource.

I. it attempts using the data transmission/reception of served beams to be more than unsuccessfully pre- within the preset period (timer etc.) If number

J. uplink beam feedback transmission is not executed continues preset period (timer)

K. uplink can transmit resource (for example, SR, random access, UL scheduling PUSCH, PUCCH ...) exist, and Meet one or more conditions.

The threshold value of condition can so that eNB and/or UE is estimated and determine that corresponding beam-channel quality is not suitable for communicating Absolute channel estimation or measured value (for example, RSRP, RSRQ, RSSI, CQI, SNR etc.).

ENB can to UE notification conditions threshold value (the specified parameter of RRC information, MAC data, the specified parameter of MAC-CE, The notification method of the specified parameter of DCI etc.).Alternatively, the threshold value of condition can be arranged by UE.

Condition can also include the combination of one or more conditions so that while meeting combination condition.

2. according to the feedback method in feedback resource allocation period

2.1. periodic feedback transfer approach

A. resource can allocation entity (eNB) distribute resource in each period, and measure entity (UE) using corresponding Resource transmission feedback.

A1. resource can allocation entity distribute periodic frequency/time/resource block/subframe/symbol etc. to specified UE Resource, and the information for transmitting period etc. is fed back to the resource location of the corresponding distribution of UE offers, UE.

A2. resource allocation information can be via such as lead code, RRC signals (for example, RRC connections reconstruct), RRC signals IE, MAC-CE, broadcast message are (for example, Master Information Block (master information block, MIB), system information block (system information block, SIB) ...), PHY down link control informations (PHY downlink control Information, PHY DCI) etc. the part of transmission signal provide.

A3. wave beam feedback can be believed via uplink control channel (for example, PUCCH) or uplink data The signal of road (for example, PUSCH) transmission, for example, one of the following or a part：It is UCI multiplexings, MAC-CE, MAC PDU, preceding Leading code, RRC-IE, RRC signal etc..Wave beam feedback may include such as eNB wave beams ID, wave beam to ID, reception wave beam ID, user Number, channel capacity, the information of RSRP, RSRQ, SNR, SINR, RSSI, CQI, PMI, RI etc..

A4. the uplink resource for being used for wave beam feedback can be made by the corresponding UE that its eNB has known The resource of transmission/reception is executed with current service wave beam, is held by its UE wave beams that eNB can be used to be determined as can receive wave beam The resource of row transmission/reception or multiple wave beams that (scanning) can be used by eNB are received in turn in being spaced at one by its UE Resource.

A5. the UE known in current scheduling timing eNB is allowed to use one by the resource for periodic feedback of eNB distribution A or multiple wave beams will execute reception when UE is using wave beam for a best wave beam.In the case, eNB can be with Beam information including the form as " eNB wave beams ID " in scheduling information, will being received via corresponding resource, and can To transmit this information to UE.

Figure 11 is that description is according to an embodiment of the present disclosure to be used for when having been allocated for the special feedback resources of periodical UE UE measures wave beam and transmits the flow chart of the method for wave beam feedback.

Referring to Figure 11, it is UE that wave beam, which measures entity 1110, and wave beam is eNB using entity 1120.However, it should be understood that It can be eNB that wave beam, which measures entity, and wave beam can be UE using entity.

In operation 1140, wave beam can measure entity 1110 to wave beam using entity 1120 and distribute feedback resources.Feedback Resource can be periodically special feedback resources.In operation 1145, wave beam can will be about being distributed using entity 1120 The information of feedback resources is transmitted to wave beam and measures entity 1110.Operation 1140 and 1145 may be generally referred to as " feedback resource allocation ". Wave beam can use the optimum beam being being currently used to measure entity 1110 to wave beam and transmit about feedback using entity 1120 The information of resource.In operation 1150, the reference signal measured for wave beam can be transmitted to wave by wave beam using entity 1120 Beam measures entity 1110.Wave beam can will be transmitted to wave beam using entity 1120 for the wave beam measuring reference signals of each wave beam Measure entity 1110.

In operation 1155, wave beam measures entity 1110 and measures wave beam.Wave beam, which measures entity 1110, can be based on wave beam survey Result is measured to select optimum beam.Since the foregoing describe wave beam measurement method and beam selection methods, so will omit below Detailed description.

In operation 1160, beam measurement can be transmitted to wave beam and use entity by wave beam measurement entity 1110 1120.Beam measurement may include the content of the feedback resources described in embodiment of the disclosure above.Wave beam measures Entity 1110 can use the special feedback resources distributed to use the transmission feedback of entity 1120 to wave beam.In the implementation of the disclosure In example, the feedback comprising respond request can be transmitted to wave beam and use entity 1120 by wave beam measurement entity 1110.

In the case, eNB can allocate resources to the optimum beam that can be communicated with the UE that eNB has known (or wave beam group).When eNB changes the wave beam or wave beam group (served beams or served beams collection) for being communicated with UE, Also change periodically special feedback resources and redistribute resource.Alternatively, eNB can will be for the resource and UE via distribution The wave beam communicated changes into the wave beam that UE will be used newly from related field by the wave beam that UE is used, and can not be to UE Transmit the distribution information about the special feedback resources of specific period.

Although the embodiment is to execute the distribution of periodically special feedback resources, the biography of the reference signal measured for wave beam Such mode is sent and measured to implement, but it can also be executed with the order different with the embodiment.Example Such as, it can be changed in a manner of as follows：The transmission of the reference signal measured for wave beam is executed in order, is carried out by UE The distribution to the measurement of wave beam and periodically special feedback resources.

Figure 12, which is that description is according to an embodiment of the present disclosure, to be considered about whether the condition for receiving corresponding confirmation In the case of, the method for eNB transmission in response to using the confirmation of wave beam feedback information that the special feedback resources of distribution transmit Flow chart.

Referring to Figure 12, it is UE that wave beam, which measures entity 1210, and wave beam is eNB using entity 1220.However, it should be understood that It can be eNB that wave beam, which measures entity, and wave beam can be UE using entity.

The operation 1240 to 1260 of Figure 12 referring to above in embodiment of the disclosure with reference to the operation 1140 of figure 11 to The part of 1160 descriptions.

Request response (HARQ, RLC ACK etc.) is needed always from the property of wave beam feedback transmission.UE can be transmitted explicitly Wave beam feedback including respond request (when feedback includes ACK request fields, by the inspection/field is marked to transmit).

In operation 1265, wave beam measures entity 1210 and can determine whether it receives the confirmation in response to feedback. In operation 1265, when wave beam measures entity 1210, and the confirmation in response to feedback has been received, judgement wave beam uses entity 1220 have been received the information about wave beam fed back by wave beam measurement entity 1210.

On the other hand, in operation 1265, when wave beam, which measures entity 1210, does not receive the confirmation in response to feedback, In operation 1270, declares rapid link failure and attempt to reconnect to network via new wave beam.In the case, weight is attempted The new wave beam for being connected to network can be the optimum beam being such as detected in operation 1255.When UE is within the preset period When not receiving respond request, although repeatedly attempting the feedback that reception includes respond request, judgement current beam state is uncomfortable Together in uplink communication, declaration rapid link failure and reconnect to network using new wave beam.In the case, work as net When network detects that UE does not execute uplink feedback transmission via the feedback resources of distribution within a period, it can also declare Link failure on UE.

In addition, in the state that network keeps the information about the UE of declaration link failure within a period, it can be with Support UE is executed using another wave beam quickly to reconnect.Network discharge declaration link failure UE connection (or abandon close In the information of UE) in the state of, when UE, which attempts to execute, to be reconnected, network can follow the reconnect of related field Journey.

In operation 1275, wave beam can be recognized to it by periodically special feedback resource allocation using entity 1220 Optimum beam.The use of the information of the recognized optimum beam of entity 1220 can be about being included in from wave beam about wave beam Measure the information of the optimum beam in the feedback that entity receives.

B. when unallocated periodic feedback transmission resource, entity (UE) is measured to periodically ask the distribution of resource (scheduling request) or transmit the transmission that mode as up-link information etc. executes feedback using random access protocol.

Although b1. measuring entity not having the allocated resource and can periodically transmit feedback, work as survey When measuring entity with for the resource of the distribution of transmission resource distribution request (scheduling request) in the uplink, to eNB weeks Transmit to phase property corresponding resource allocation request.In the case, measure entity by eNB distribute uplink resource and via The resource distributed is transmitted to eNB to be fed back.

B2. the uplink resource for being used for wave beam feedback can be made by the corresponding UE that its eNB has known The resource of transmission/reception is executed with served beams, biography is executed by its UE wave beams that eNB can be used to be determined as can receive wave beam The resource sending/receive or the money for receiving multiple wave beams that (scanning) can be used by eNB in being spaced at one by its UE in turn Source.

It periodically distributes unique resource to UE respectively for eNB and allows the side of UE transmission uplink beam feedbacks The shortcomings that method, is：The increase of number of the amount of the resource to be distributed according to user and the number by the eNB wave beams controlled and Increase.In order to solve this problem, consider that a kind of system, distribution can allow for each user periodically and simultaneously to attempt to hold The resource of row resource occupation and resource transmission, and fed back from using multiple users of the resource to receive wave beam.This resource is determined Justice is random access resource.Random access resource can be distributed periodically.Each UE can transmit uplink via resource Road wave beam feedback.The advantages of this system, is：When changing wave beam between UE and eNB every time, the wave changed need not be used Beam to each UE distribute feedback resources, also, although wave beam quality suddenly change, also to UE provide available beams so that UE can be communicated using available beams with eNB.

Figure 13, which is that description is according to an embodiment of the present disclosure, to be come for UE using the random access resource of eNB periodic allocations Execute the flow chart of the method for wave beam feedback.

Referring to Figure 13, it is assumed that eNB distribution periodically transmits the random access resource of feedback information by its UE.

In operation 1350, wave beam can be transmitted the reference signal measured for wave beam using entity 1320.Wave beam uses Entity 1320 can be respectively transmitted the reference signal measured for wave beam corresponding to multiple wave beams.

In operation 1355, wave beam measures entity 1310 and measures wave beam.Wave beam, which measures entity 1310, can be based on wave beam survey Result is measured to select optimum beam.Since the foregoing describe wave beam measurement method and beam selection methods, so will omit below Detailed description.

In operation 1370, wave beam measures entity 1310 and is able to carry out wave beam feedback.Wave beam, which measures entity 1310, to be made Wave beam feedback is executed with random access protocol.Wave beam measurement entity 1310 can use current best according to beam measurement Wave beam executes feedback.Wave beam is measured entity 1310 and is fed back to wave beam using the transmission of entity 1320 in operation 1371, and is being grasped Make to receive from it the confirmation in response to feedback in 1372.When wave beam measure entity 1310 operation 1372 in do not receive in response to When the confirmation of feedback, feedback is retransmitted to wave beam using entity 1320, and in operation 1374 in operation 1373 Receive from it the confirmation in response to feedback.Compared with the process of related field, feedback information is used for using random access protocol Transmission and response process be new.More specifically, wave beam measures, feedback transmission is repeated several times in entity 1310 and response receives, directly Until it receives confirmation from wave beam using entity 1320.

Random access resource is that eNB beam scannings receive interval.Random access resource needs more resource occupation amounts, with Just identical information is received, this causes the wasting of resources.Since UE may collide with one another during the transmission of information, so, when UE's When conflict occurs, random access resource may be decreased performance, delay etc..

Embodiment of the disclosure considers random access scheme, can be the RACH competition-based that is used in LTE and Uncompetitive RACH.Alternatively, embodiment of the disclosure, which can also use to be similar to, is based on the RACH of competition and uncontested RACH scheme random access scheme, allow UE eNB execute receive without know which UE will trial execute transmission Interim, attempt to execute transmission using arbitrary or presupposed information (sequence) etc..

Figure 14 is that the description service life according to an embodiment of the present disclosure in the case where considering respond request is visited at random Ask that resource executes the flow chart of the method for feedback.

Referring to Figure 14, it is assumed that eNB distribution UE periodically transmits the random access resource of feedback information.

The operation 1450 to 1474 of Figure 14 referring to above in embodiment of the disclosure with reference to the operation 1350 of figure 13 to The part of 1374 descriptions.

In operation 1480, wave beam measures entity 1410 and can determine whether it receives the confirmation in response to feedback.Wave Beam measures entity 1410 and determines whether it receives the confirmation in response to feedback within the preset period.In operation 1480, When wave beam measures entity 1410, and the confirmation in response to feedback has been received, judgement wave beam is received using entity 1420 The information about wave beam that entity 1410 is fed back is measured to by wave beam.On the other hand, in operation 1480, when wave beam measures entity 1410 do not receive the confirmation in response to feedback, are worked on 1485.

Although more trials of UE transmit feedback using random access, it does not receive sound within the preset period It should ask.In the case, UE judges that current beam state is not suitable for uplink communication, declaration rapid link failure, simultaneously Network is reconnected to using new wave beam.

Determine the condition for not receiving respond request within the preset period：

In response to random access preamble individually transmit random access response (random access response, RAR) message is not received within the preset period

In response to the random access preamble of preset times transmission RAR message even one within the preset period It is secondary not also to be received

In response to the preset times within the preset period random access preamble transmission attempt (including retransmit Number of attempt) RAR message even be not also received once.

In the case, when network detects that UE does not execute uplink via the feedback resources of distribution within a period When feedback transmission, it can also declare the link failure on UE

In the state that network keeps the information about the UE of declaration link failure within a period, it can support UE is executed using another wave beam and is quickly reconnected.

In the state that network discharges connection (or the information of discarding about UE) of the UE of declaration link failure, when UE tastes When examination executes reconnect, network can follow the reconnect process of related field.

In operation 1480, when wave beam, which measures entity 1410, does not receive the confirmation in response to feedback, in operation 1485 In, declare link failure and attempts to reconnect to network via new wave beam.In the case, it attempts to reconnect to network Wave beam can be the optimum beam that detects such as in operation 1455.It is described in embodiment of the disclosure referring to Figure 12 above Link failure.

2. aperiodicity feeds back transfer approach

When resource can allocation entity (eNB) determined based on timing and criterion and to receive feedback and then when assigned resource, measure Entity (UE) transmits feedback via the resource distributed.For this purpose, condition and operating method are described as follows.

Wave beam feedback can via uplink control channel (for example, PUCCH) or uplink data channel (for example, PUSCH it) transmits.Wave beam feedback may include the number of such as eNB wave beams ID, wave beam to ID, reception wave beam ID, user, letter The information of road capacity, RSRP, RSRQ, SNR, SINR, RSSI, CQI, PMI, RI etc..

Uplink resource for wave beam feedback, which can be the corresponding UE known by its eNB, can use clothes Business wave beam execute transmission/reception resource, by its UE can use eNB be determined as can receive wave beam wave beam execute transmission/ The resource of reception or the resource for receiving multiple wave beams that (scanning) can be used by eNB in turn in an interval by its UE.

The UE for allowing eNB to know in current scheduling timing by the resource for aperiodicity feedback of eNB distribution uses one A or multiple wave beams will execute reception when UE is using wave beam for a best optimum beam.In the case, eNB can Using scheduling information include as the beam information that will be received via corresponding resource in the form of " eNB wave beams ID ", and UE can be transmitted this information to.

Resource can allocation entity be used for determine if execute aperiodicity feedback criterion example：

New feedback is not all received until have passed through specified time from the previous feedback reception time (when fixed When device distribute resource when expiring)

Until have passed through specified time all any information (distributing resource when the timer has lapsed) is not received from UE

With the measurement result of the channel of corresponding UE or link state (quality, power, SNR, SINR, CQI, RSRP, RSRQ ...) it is less than or equal to specified threshold

With the measurement result of the channel of corresponding UE or link state (quality, power, SNR, SINR, CQI, RSRP, RSRQ ...) reduced than previous measurement result (or within the period of previous steps previous be averaged), and be reduced to Less than or equal to the value of specified threshold

It measures entity (UE) and transmission feedback is determined based on timing and criterion, then random access protocol etc. is used to ask resource Distribute (scheduling request) or transmission up-link information.For this purpose, transmission condition and transfer approach are described as follows.

All unallocated can be transmitted newly is fed back until have passed through specified time from the previous feedback reception time until Resource (distributes resource) when the timer has lapsed

Until have passed through specified time all any information (distribution money when the timer has lapsed is not received from eNB Source)

With the measurement result of the channel of corresponding eNB or link state (quality, power, SNR, SINR, CQI, RSRP, RSRQ ...) it is less than or equal to specified threshold

With the measurement result of the channel of corresponding eNB or link state (quality, power, SNR, SINR, CQI, RSRP, RSRQ ...) reduced than previous measurement result (or within the period of previous steps previous be averaged), and be reduced to Less than or equal to the value of specified threshold

In addition, following feedback method may propose the initiation feedback transfer approach of UE due to event.

As described above, when wave beam has the periodical wave beam feedback resources distributed by eNB using entity (UE), it can Beam information is fed back using corresponding resource.UE initiatively determines the need for wave beam feedback transmission, and UE needs are aperiodic Property to eNB transmit wave beam metrical information.

In the case, UE considers to operate about whether the condition that there is the allocated resource, this is described below.

Figure 15 is the description UE according to an embodiment of the present disclosure that is used for based on about whether in the presence of the allocated resource Condition executes the flow chart of the method for feedback.

Referring to Figure 15, in operation 1510, UE measures wave beam.UE receives the BRS transmitted from eNB, and flow measurement is taken turns about BRS The different beams of reception, and obtain the beam quality measured value that UE receives wave beam pair and each eNB transmission wave beams.

In operation 1520, UE selects preferred wave beam.Selected wave beam can be optimum beam.UE surveys beam quality Magnitude is compared to each other, and transmits the best UE of beam selection for each eNB and receive wave beam.In addition, UE with quality from up to most Low sequence identification, which executes eNB, transmits better wave beam (or wave beam group), and selects identified wave beam as preferably Wave beam (or preferably wave beam group).

In operation 1530, UE determines the need for changing served beams with another wave beam.Due to above in the disclosure The method for determining the need for wave beam change is described in embodiment referring to Fig. 9 etc., so detailed description omitted below.

In operation 1530, when UE judgements served beams need not with another wave beam come when changing, in operation 1550, Existing wave beam can be fed back.Existing wave beam can be the served beams being being currently used.Since served beams have no need to change, So it may be optimum beam.In addition, in operation 1530, when UE judgement served beams need not be changed with another wave beam When, embodiment can be changed in the case of no operation 1550.

On the other hand, in operation 1530, when UE judgement served beams need when changing, operated with another wave beam In 1560, it can determine whether the feedback resources being previously assigned can be used.

In operation 1560, when the feedback resources that UE judgements are previously assigned are available, in operation 1565, it can use The feedback resources that are previously assigned execute feedback.Feedback may include that (existing wave beam will be changed to about desired wave beam Wave beam) information.Detailed feedback information refers to the part explained with feed back relevant information.

On the other hand, in operation 1560, when the feedback resources that UE judgements are previously assigned are unavailable, in operation 1570 In, it can be changed using the wave beam of eNB and receive interval to feed back the information of the wave beam changed about existing wave beam.About wave The feedback information of beam may include that wave beam changes request.It can be explicit information that wave beam, which changes request,.When for anti-via wave beam When the wave beam of the feedback of feedforward information is different from served beams, changing for wave beam can be implicitly indicated by asking wave beam to change Become.

The operation of UE is described when the wave beam for needing the UE for changing its current beam to be known via eNB by eNB is special When being assigned with the uplink feedback resource for corresponding UE, UE further determine that its whether transmit be used for it is corresponding The wave beam of resource is fed back.

It is used for determining the need for changing the item of its current beam due to describing UE in embodiment of the disclosure above Part is described in detail so will omit below.

In embodiment of the disclosure, UE can independently determine that wave beam is fed back according to the resource distributed by eNB, and to ENB provides wave beam metrical information.It is described below and feeds back relevant various embodiments with wave beam.In order to be held based on the determination of UE Traveling wave beam metrical information is fed back, and each UE has been allocated that transmit to eNB by its UE and (be adjusted for requests resource allocation Degree request) information resource.

It may occur however that UE is not yet assigned resource or the example of resource cannot be used (for example, the quality of served beams The example that reduces suddenly, UE uplinks are asynchronous example, etc.).Although it is contemplated that the probability and situation, UE that occur also may be used To provide its wave beam metrical information to eNB with available beams.In the case, in order to maintain the UE using available beams Although wireless connectivity, shared resource are not allocated to unique UE, but need that any UE is allowed to transmit being total to for information to eNB Enjoy resource.

Periodical wave beam feedback method and aperiodicity wave beam feedback method need the resource distributed by eNB so that UE is held Row uplink feedback transmits.For this purpose, period or the time interval of one or many execution wave beam feedbacks can be arranged in eNB.

ENB can notify set period or set time interval to each UE.Notification method can be following One of messaging：

The RRC information of element of the notice comprising specified beams feedback duration

The downlink control messages of element of the notice comprising specified beams feedback duration (via PDCCH)

Downlink MAC-CE the message of element of the notice comprising specified beams feedback duration (via PDSCH)

Use the notice of the method for the element that can include specified beams feedback duration

The candidate in the period or time interval that can be arranged is as follows：

The all-wave beam scanning duration：UE is used for observing the period of all wave beams pair of UE and eNB

- 5G NB Tx beam scanning the duration：UE be used for observing all eNB wave beams pair for a UE wave beam when Between section

Each beam reference signal measurement duration：The minimum wave beam observation cycle of UE is (for example, beam reference signal Subframe transmission interval)

Any specified time interval

3. the design of the shared resource of the initiation uplink beam feedback of UE can be received by it for eNB

In order to make UE transmit up-link information in the case of the resource that do not distributed by eNB, need to be arranged by eNB Shared resource interval, so that all UE can execute transmission.In the wireless communication system of related field, shared resource interval Example be RACH, be initially accessed UE its information is transmitted to by eNB by the RACH, so as to eNB transmit network access request.

The Beam Forming System using mimo antenna by different resource (such as, channel, time, wave beam, code, etc. Deng) distribute to different wave beams and using in the case of the resource and wave beam, needing more complexly to be arranged and design share money Source interval.UE and eNB has the limited wave beam pair for being used to successfully transmit/receive information.Due to eNB cannot know when and which A UE transmits information, so shared resource interval needs to be designed to execute reception via all wave beams so that all UE can be with It transmits information and eNB can receive the information.

Therefore, eNB needs design share resource interval so that it, which can be scanned, receives wave beam and execute reception, and leads to It crosses broadcast etc. and notifies the interval to UE.

When eNB, which distributes shared resource interval, receives information to receive the never specified UE of wave beam by scanning, UE can Based on its active determination and eNB wave beam metrical informations, it is successfully delivered uplink beam using the interval and feeds back.In this situation Under, due to can by any wave beam rather than have been used to the served beams communicated with eNB transmit/receive wave beam Feedback information, so the probability of success of corresponding transmission is much larger than using the wave beam used via the resource distributed by eNB Come transmit information example probability.

The shared resource interval distributed by eNB can be allocated for for another object (for example, the transmission of control information) Wave beam, rather than be used for exchanging the wave beams of data for eNB and UE.In this case, it is possible to distribute shared resource interval with Using the wave beam of the width of different size with the wave beam for being used for exchanging data with eNB and UE (for example, with wide beamwidth Control wave beam).

The shared resource interval distributed by eNB be not by different resource (such as, channel, time, wave beam, code, etc. Deng) distribute to different wave beams and be used for exchanging using the resource and wave beam and by eNB and UE data use MIMO days The Beam Forming System of line, but use the channel of omni-beam.Can be defined using the channel of omni-beam and in the presence of with For between eNB and UE.

The shared reception interval that above-mentioned eNB wave beams change (scanning) has following characteristic.

The shared reception interval that corresponding eNB wave beams change (scanning) can be allocated for specified UE and only permit Perhaps one group of specified UE executes the resource of transmission.

The shared reception interval that corresponding eNB wave beams change (scanning) can be allocated for multiple unspecified UE And multiple unspecified UE is allowed to execute the resource of transmission.

The shared reception interval that corresponding eNB wave beams change (scanning) can be include one of the following or multiple Scheduling signals：Frequency (frequency, subframe number, resource block number, channel number etc.), the time (time, frame number, subframe number, Transmit time/frame/subframe/time slot etc. after corresponding notice) and Beam resources information.

Due to describing the information at the shared reception interval for changing (scanning) about corresponding eNB wave beams, institute in standard Know that the information is present at specified frame position with UE and eNB.The information may not be needed the transmission of specific notification signal. The information may be embodied in the network information (for example, MIB, SIB etc.) that eNB is notified via broadcast channel.The information can wrap It is contained in the network information (the DL scheduling informations for notifying each UE using downlink control channel (PDCCH), with unicast mode).

- UE detections change the information at the shared reception interval of (scanning) about eNB wave beams, and are transmitted using corresponding resource Include for changing served beams wave beam change request wave beam feedback (its can include explicitly bit or array or The transmission for the corresponding request for changing request as wave beam can implicitly be recognized).

- eNB can change the shared reception interval of (scanning) using eNB wave beams receive wave beam UE about from having made The feedback information for the wave beam that wave beam changes.

In embodiment of the disclosure, described above and below not needed using the wave beam feedback method of random access Using the method for random access used in other standards of 3GPP standards, IEEE etc..In embodiment of the disclosure, wave beam Feedback method be referred to as the interval received for using eNB to execute come the method that transmits feedback, scanning beam come UE with The method and process of information are exchanged between eNB.

Figure 16 is the description shared reception interval according to an embodiment of the present disclosure for being configured to eNB wave beams and changing (scanning) Method and lead code transfer approach figure.

Referring to Figure 16, x-axis indicates the random access period, and y-axis indicates frequency.When the random access period is divided into multiple Between be spaced.Rx eNB#1, Rx eNB#2, Rx eNB#3 and Rx eNB last wave beam #4 indicates interval.ENB changes according to interval Wave beam, and receive wave beam feedback information from UE.

In embodiment of the disclosure, it is assumed that the wave beam that eNB is received in an interval during the random access period Number is one.In embodiment of the disclosure, the number for the wave beam that eNB is received during the random access period can be one Or it is multiple.In embodiment of the disclosure, the number of the wave beam received in different intervals of the eNB during the random access period can To be identical.In embodiment of the disclosure, the number of the wave beam received in an interval of the eNB during the random access period Mesh can be one or more.In the case, eNB can use different resource (such as, different frequencies, different objects Reason position etc.) receive corresponding wave beam.

Figure 17 is the description shared reception interval according to an embodiment of the present disclosure for being configured to eNB wave beams and changing (scanning) Method and lead code transfer approach figure.

Referring to Figure 17, it is shared the change of eNB wave beams can be configured in a manner of receiving as the different beams being separated from each other Receive interval.

For example, the interval indicated by reference label 1710 is the reception interval for being shown as blank.For receiving wave beam #K Interval the interval for receiving wave beam #K+1 between there may be blank spaces.In the case, for receiving wave beam Interval is separated from each other.In embodiment of the disclosure, multiple blank spaces can be set in one cycle.

Figure 18 is the description shared reception interval according to an embodiment of the present disclosure for being configured to eNB wave beams and changing (scanning) Method and lead code transfer approach figure.

Referring to Figure 18, according to each UE in the different resource of the upper distribution in each of domain of wave beam to be received (for example, frequency Rate).

In chart shown in figure 18, the interval of Rx wave beams changes according to the interval on time shaft, and this is configured It is identical as embodiment shown in Figure 16.In the embodiment referring to Figure 18, the figure shows go out Rx wave beams according on time shaft It is spaced and changes, and receive the feedback information for different UE on the frequency axis.In first time interval, via Rx waves Beam #1 receive according to frequency for UE#1, UE#2 ..., the feedback information of UE#M.In the second time interval, via Rx waves Beam #2 receive according to frequency for UE#1, UE#2 ..., the feedback information of UE#M.

System distributes unique resource to all UE (or specified UE) according to this embodiment so that UE (or specified UE) energy It is enough to transmit up-link information in specified location, it is connect to each UE informing uplinks information, and via corresponding resource Receive the feedback of beam information.

It can implement the transmission of the distribution information about corresponding resource with various methods.For example, distribution information transmission Method can be implemented in a manner of as follows：Any kind of information (if the information can be transmitted) is transmitted, including closing In the information of the resource (for example, frequency and time) of distribution.For example, downlink chain that can be to use 3GPP LTE PDCCH to transmit Road controls the form transmission distribution information of information (DCI).By eNB receive Rx wave beams can be：Wave with N number of different directions The analog beam of beam forms form；Identical timing receipt, it is Chong Die with another wave beam but by the volume of the wave beam different from overlapping The digital beam froming form of the wave beam of the encoding scheme coding of code scheme；Made by combining analog beam with digital beam Mixed-beam；Or the omni-beam with the same direction.

It can be the information about one or more wave beams to execute feedack about optimum beam.

When there is no used the wave beam feedback at the shared reception interval for changing (scanning) for eNB wave beams to change with wave beam When becoming requesting method, although in the presence of the new wave beam for being able to carry out communication, the UE for the wave beam that it has been used cannot be reused Without using new wave beam.Therefore, it until UE needs to wait until that radio bearer setup complete (RLF) condition is satisfied, then executes It is newly connected to the initial access process of network.

In the EHF band with highly directive of mmWave etc., radio link may be due to passing vehicle , user mobile etc. and there are various barriers, and may within the relatively short period (for example, being less than 50ms) experience Frequent wave beam changes.

Its position is slightly changed in UE and has had and can be used for being communicated with corresponding eNB (or eNB of connection) Another wave beam in the state of, if UE executes determining and reconnecting to the radio bearer setup complete of existing network It, this may be to waste time.

Therefore, present disclose provides a kind of method, changed using the wave beam of eNB and receive interval, changed according to wave beam and Beam quality measures and existing radio bearer setup complete, stablizes and rapidly transmission wave beam changes request.

In the following description, it is contemplated that various environment explain various embodiments that are practical and usefully implementing：(1) It is mixed with coexisting using the wave beam feedback method for the resource distributed by eNB and the initiation uplink beam feedback method of (2) UE Together, and each wave beam feedback method (3) is periodically or (4) aperiodically execute wave beam feedback.

Figure 19, which is that description is according to an embodiment of the present disclosure, to be considered using the wave beam feedback method by the eNB resources distributed With the flow chart of the feedback method in the case of the initiation uplink beam feedback method of UE.

Referring to Figure 19, it can be UE that wave beam, which measures entity 1910, and wave beam can be eNB using entity 1920.It is grasping In making 1940, wave beam can be that wave beam measures the distribution feedback resources of entity 1910 using entity 1920.Feedback resources can be special Use feedback resources.Feedback resources can periodically or aperiodically be distributed.In operation 1945, wave beam uses 1920 energy of entity It is enough that wave beam measurement entity 1910 will be transmitted to about the information of the feedback resources distributed.Operation 1940 and 1945 is commonly referred to as anti- Present resource allocation.Wave beam can use the optimum beam being being currently used to measure entity 1910 to wave beam and pass using entity 1920 Send the information about feedback resources.

In operation 1950, the reference signal measured for wave beam can be transmitted to wave beam using entity 1920 and surveyed by wave beam Measure entity 1910.Wave beam can be respectively transmitted the reference letter measured for wave beam corresponding to multiple wave beams using entity 1920 Number.

In operation 1955, wave beam measures entity 1910 and measures wave beam.Wave beam, which measures entity 1910, can be based on wave beam survey Result is measured to select optimum beam.Due to describing wave beam measurement method and beam selection side in embodiment of the disclosure above Method, therefore will omit be described in detail below.

In operation 1960, beam measurement can be transmitted to wave beam and use entity by wave beam measurement entity 1910 1920.Beam measurement can include the content of the feedback resources described in embodiment of the disclosure above.

In operation 1965, wave beam measures entity 1910 and can determine whether the initiation wave beam feedback transmission condition of UE is expired Foot.The initiation wave beam feedback of UE refers to directly determining the need for executing wave beam for UE feeding back and based on the determination by wave beam Feedback is transmitted to eNB, transmits the operation of request without the use of the periodic feedback of eNB.In operation 1965, when wave beam measures in fact When body 1910 judges that the initiation wave beam feedback of UE need not execute, terminate wave beam feedback.

On the other hand, in operation 1965, judge the initiation wave beam for needing to execute UE feedback when wave beam measures entity 1910 When, in operation 1970, fed back using the shared intervals that receive eNB to execute wave beam.Due to above in embodiment of the disclosure In describe that eNB is shared to receive interval referring to Figure 16 to Figure 18, be described in detail so will omit below.Wave beam measures entity 1910 It may previously have been received about the shared information for receiving interval of eNB from wave beam using entity 1920.Wave beam measures entity 1910 can transmit feedback information using the shared reception interlude resources of eNB and frequency resource.

In operation 1970, wave beam measures entity 1910 and is able to carry out wave beam feedback.Wave beam measures entity 1910 being capable of root According to beam measurement feedback is executed using current optimum beam.Wave beam measures entity 1910 and is used to wave beam in operation 1971 The transmission feedback of entity 1920, and confirmation of the reception in response to feedback in operation 1972.It is being grasped when wave beam measures entity 1910 In making 1972 when not receiving confirmation, retransferred feedback using entity 1920 to wave beam in operation 1973, and grasping Confirmation is received from it in making 1974.Wave beam measures that feedback transmission is repeated several times in entity 1910 and response receives, until it is from wave beam Until confirmation being received using entity 1920.

In operation 1975, wave beam can be changed based on the wave beam feedback information received about UE using entity 1920 Beam information, or the wave beam for UE can be changed if necessary.

It should be understood that embodiment shown in Figure 19 can also be changed in a manner of as follows：It is executed in different order The distribution of the special feedback resources of wave beam feedback, the measurement and most of the reference signal measured for wave beam are transmitted by its UE The selection of good wave beam.

UE needs the resource transmission wave beam feedback via eNB distribution such as eNB requests.ENB can periodically or non-week Distribute to phase property wave beam feedback transmission resource.

Alternatively, UE can also use the shared reception interval distributed by eNB, initiatively or according to the initiation mode of UE Transmit wave beam feedback.

The feedback condition described in embodiment of the disclosure above may be used in the initiation wave beam feedback transmission condition of UE At least one of.

In addition, UE is also fed back via the private resource transmission wave beam of the eNB distribution by related field, and decision condition is expired Foot.When UE decision conditions are satisfied, the shared reception interval of eNB can also be used to transmit identical wave beam feedback information. In this case, it is possible to transmit/receive using UE wave beams and/or eNB wave beams different from each other and is special via being distributed by eNB The wave beam feedback of resource transmission and the wave beam that transmission is spaced via the shared receptions of eNB are fed back.

Condition can be arranged in a manner of as follows in the embodiment：The wave beam feedback resource allocation of eNB is arranged to Periodic resources are distributed, and the initiation wave beam feedback transmission condition of UE is arranged to the change from optimum beam to another wave beam, and And the shared reception interval of eNB is arranged to random access and receives interval, is described below referring to Figure 20.

Figure 20, which is that description is according to an embodiment of the present disclosure, to be considered using the wave beam feedback method by the eNB resources distributed With the flow chart of the feedback method in the case of the initiation uplink beam feedback method of UE.

Referring to Figure 20, it can be UE that wave beam, which measures entity 2010, and wave beam can be eNB using entity 2020.

Operation 2040 to 2060 is referring to description as described in the operation 1940 to 1960 shown in Figure 19.In operation 2045, Feedback resource allocation can be periodically special feedback resource allocation.

In operation 2065, wave beam measures entity 2010 and is able to determine whether to need to change optimum beam.For determining most Whether good wave beam needs the condition/criterion changed referring to the part described in embodiment previous above.

In operation 2065, when wave beam, which measures the judgement of entity 2010, haves no need to change optimum beam, do not execute UE's Wave beam is initiated to feed back and terminate the process.

On the other hand, it in operation 2065, when wave beam, which measures the judgement of entity 2010, to be needed to change optimum beam, is operating In 2070, it is able to carry out wave beam feedback.Wave beam is measured entity 2010 and can be fed back using random access protocol to execute wave beam.Wave Beam is measured entity 2010 and can also be fed back using current optimum beam to execute wave beam according to beam measurement.Wave beam measures Entity 2010 is fed back to wave beam using the transmission of entity 2020 in operation 2071, and is received in response to feedback in operation 2072 Confirmation.In operation 2072, when wave beam, which measures entity 2010, does not receive the confirmation in response to feedback, in operation 2073 It is middle that feedback is retransmitted to wave beam using entity 2020, and confirmation of the reception in response to feedback in operation 2074.With phase The process in pass field is compared, and the transmission and response process using random access protocol for feedback information are new.More specifically Ground, wave beam measures the multiplicating feedback transmission of entity 2010 and response receives, until it is received from wave beam using entity 2020 Until confirmation.

In operation 2075, wave beam can recognize optimum beam using it using entity 2020 and carry out assignment period Special reverse Present resource.

Figure 21 is that description is according to an embodiment of the present disclosure when the initiation wave beam for executing UE before eNB distributes feedback resources The flow chart of feedback procedure when feedback.

Referring to Figure 21, it can be UE that wave beam, which measures entity 2110, and wave beam can be eNB using entity 2120.

Operation 2140 to 2155 is referring to description as described in the operation 1940 to 1955 shown in Figure 19.

In operation 2165, wave beam measures entity 2110 and is able to determine whether to need to change optimum beam.For determining most Whether good wave beam needs the condition/criterion changed referring to the part described in embodiment previous above.

In operation 2170, wave beam measures entity 2110 and changed wave beam is used to execute wave beam feedback.Wave beam feedback ginseng See the operation 2070 of Figure 20.Operation 2171 to 2174, which corresponds to, operates 2071 to 2074 shown in Figure 20.In addition, operation 2180 Corresponding to operating 2060 shown in Figure 20.

In operation 2185, wave beam recognizes optimum beam using it using entity 2120 and carrys out the special feedback money of assignment period Source.

Figure 22 is the flow chart for the initiation feedback transmission for describing the UE according to an embodiment of the present disclosure using another bandwidth.

Referring to Figure 22, the initiation wave beam feedback of UE can use its beam angle to be different from eNB for being transmitted into row information The wave beam of beam angle of wave beam (for example, omni-beam or width/compared with narrow beam) transmit/receive.Wave beam measures entity 2210 can be UE, and wave beam can be eNB using entity 2220.

Operation 2240 to 2275 is referring to description as described in the operation 2240 to 2075 shown in Figure 20.

In operation 2270, wave beam measures entity 2210 and can be used for into row information different from eNB via its beam angle The wave beam of the beam angle of the wave beam of transmission feeds back to transmit, and wave beam can be via its beam angle not using entity 2220 It is same as the wave beam of the beam angle of the wave beam for transmitting information, receives the feedback information for measuring entity 2210 about wave beam.

In operation 2270, beam direction is diverted or UE does not know the example of the wave beam for reception, eNB can The interval for receiving wireless messages is operated to use omni-beam or broad beam.

UE can the interim using (1) random access or (2) distribute to always the resource of each UE come to eNB pass It delivers letters breath.

It can execute and the feedback of the special feedback resources distributed is used to transmit, change but regardless of optimum beam.Alternatively, Based on the determination whether changed about optimum beam, it can not execute and the feedback of the special feedback resources distributed is used to transmit.

Figure 23 be the description initiation wave beam feedback transmission condition according to an embodiment of the present disclosure based on about UE whether by The flow chart of the feedback procedure of the condition of satisfaction.

Referring to Figure 23, wave beam measures entity 2310 and can determine that the initiation wave beam for whether meeting UE before each feedback is anti- The pattern presented transmission condition, and select transmission to feed back based on the determination.

Referring to Figure 23, it can be UE that wave beam, which measures entity 2310, and wave beam can be eNB using entity 2320.Operation 2340 to 2365 referring to description as described in the operation 1940 to 1965 shown in Figure 19.

In operation 2365, when wave beam, which measures entity 2310, judges that the initiation wave beam feedback transmission condition of UE is satisfied, In operation 2370, fed back using the shared intervals that receive eNB to execute wave beam.Detailed operation about wave beam feedback is referring to pass In the shared descriptions for receiving interval of the eNB as in operation 1970.Operation 2371 to 2374 is referring to about shown in Figure 19 Operation 1971 to 1974 description.

In operation 2375, wave beam can be changed based on the wave beam feedback information received about UE using entity 2320 Beam information or change for UE wave beam.

In operation 2365, judge that the initiation wave beam feedback transmission condition of UE is not satisfied when wave beam measures entity 2310 When, in operation 2380, feedback information can be transmitted using the special feedback resources of distribution.

In embodiment of the disclosure, UE can be passed using the special feedback resources of distribution or the shared reception intervals eNB Send wave beam feedback information.UE can also be measured in each wave beam selects to use shared receive of the initiation of UE to be spaced or distribute special Feedback resources come transmit wave beam feedback method.In this case, it is possible to use UE wave beams and/or eNB wave beams different from each other To transmit/receive via the wave beam feedback of the private resource transmission distributed by eNB and via the shared waves for receiving interval transmission of eNB Beam is fed back.

Figure 24 A and Figure 24 B be describe according to various embodiments of the present disclosure, when using embodiment shown in Figure 23 The flow chart of the operation of UE when the shared wave beam feedback methods for receiving interval of eNB are method of random access competition-based.Ginseng 3GPP LTE RACH are seen to configure method of random access competition-based.

Referring to Figure 24 A and Figure 24 B, it can be UE that wave beam, which measures entity 2410, and wave beam can be using entity 2420 eNB。

Operation 2440 to 2465 is referring to description as described in the operation 2340 to 2365 shown in Figure 23.

In operation 2465, when wave beam, which measures entity 2410, judges that the initiation wave beam feedback transmission condition of UE is satisfied, In operation 2470, begin to use the wave beam of change to execute wave beam feedback.Wave beam, which measures entity 2410, to be begun to use Random access protocol is fed back to execute wave beam.

In operation 2472, wave beam measures entity 2410 and selects random access preamble sequence, and using selected Random access preamble sequence transmits random access preamble.In the case, wave beam measures entity 2410 and can use and it is expected Wave beam (wave beam that existing wave beam will be changed to) transmit random access preamble.It has determined via the shared intervals eNB (or random access channel) transmission UE initiations wave beam feedback UE select UE known (or when they are available by ENB notices) one of preamble sequence, and using the corresponding random access of random access channel transmission notify by eNB before Leading code.

When eNB has been allocated for receiving the interval of random access preamble by scanning beam, UE can be transmitted and (1) All eNB receive wave beam or (2) one or N number of eNB receive the relevant one or more lead codes of wave beam, wherein one Or N number of eNB receives wave beam and is estimated for the most successful reception of eNB execution according to measurement result in corresponding interval.

In operation 2474, wave beam receives random access preamble using entity 2420.In addition, wave beam uses entity 2420 Entity 2410 is measured based on the random access preamble received to wave beam determining the need for the wave beam via change to transmit Confirm.Wave beam can determine that the wave beam of transmission random access preamble is the optimum beam used, goes back using entity 2420 It is the wave beam changed.When wave beam judges that the wave beam of transmission random access preamble is the wave beam changed using entity 2420, it It can pick out and need to change optimum beam.ENB can via by scanning beam receive random access preamble PRACH come Determine selection lead code UE transmission uplink preamble code be successfully/or failure.In the case, used successfully into The wave beam that one or more wave beams that row receives receive corresponding lead code is selected as to be executed wirelessly with corresponding UE The wave beam of communication.In the case, eNB has no knowledge about the purpose of the UE, lead code and lead code that execute lead code transmission.

It executes and is transmitted using the lead code of the random access competition-based of related field, the network of (1) for UE is initial Access/reconnect or (2) are obtaining the uplink synchronisation of UE.Other than two conditions (1) and (2), the disclosure Embodiment further include：(3) random access that UE is initiated executes condition, for transmitting wave beam feedback information by UE, to transmit Corresponding RACH.

In operation 2476, wave beam measures entity 2410 to wave beam using entity 2420 and transmits random access response.Wave beam It can change wave beam based on the random access preamble received using entity 2420, and can be transmitted via the wave beam of change Random access responds.Random access response may include the information for uplink resource allocation.ENB is based on each lead code Transmission/receiving time, pass through random access radio network temporary identifier (random access radio network Temporary identifier, RA-RNTI) the corresponding lead code transmission UE of instruction.ENB selections receive corresponding lead code Wave beam is created using selected beam allocation uplink resource (UL licenses) from the uplink resource as optimum beam Random access response (RAR) message is built, and uses corresponding wave beam to the UE in random access responding time intervals (RAR windows) Transmit message.When assuming that when channel reciprocity, being suitable for, UE executes the optimum beam of transmission and eNB can be used to execute transmission most Good wave beam is identical.

In operation 2478, wave beam metrical information can be transmitted together with channel information.Channel measurement information can wrap Containing channel state information (channel state information, CSI) and about channel quality indicator (channel Quality indicator, CQI) information.The UE of different random access sequence is selected to check the letter being included in RAR message Breath, determines whether the information transmitted by each UE is correctly received, and identifies and be respectively transmitted to their corresponding RAR message (that is, determining whether the RAR of the RA-RNTI comprising the time for executing transmission according to each UE is transmitted).

When UE is opened via its RA-RNTI RAR messages received and judges the lead code ID and corresponding RAR of its transmission In lead code ID it is identical when, determine that corresponding RAR is the RAR of the lead code transmitted by UE and executes following procedure.

1) TC-RNTI being included in RAR is determined, as the ID used in the transmission of next uplink message

2) uplink synchronisation is obtained using the timing-advance information being included in RAR

3) the UL licenses in RAR are detected, the uplink transmission resource of next message is then detected

UE executes UE letters according to the uplink resource scheduling information (UL licenses) for including in the response of the random access of reception The transmission (feedback) of breath, channel information, optimum beam information etc..In the case, sender of the UE selections for feedback information ID is uplink beam feedback message (if it exists) as TC-RNTI, and by sender ID, message corresponding with expression ID transmit together.

Based on following methods, in operation 2480, eNB receives corresponding message and identifies that corresponding message is to come from The uplink beam feedback information of specified UE：

1) when UE using UL license, uplink message include the C-RNTI information used and transmit channel believe When breath, eNB can use received infomation detection to be connected to the UE to corresponding UE.

Figure 25 is the figure for the frame structure for showing the wave beam feedback according to an embodiment of the present disclosure transmitted by UE.

Referring to Figure 25, wave beam feedback frame includes TC-RNTI, C-RNTI and wave beam feedback information.Wave beam feedback frame includes making It is the packet of the UE in connection status for the TC-RNTI of the sender ID of corresponding message, the sender of specified corresponding message (wave beam ID, wave beam receive position, wave to beam information containing ID (C-RNTI) and corresponding UE expectation changes in the message Beam channel performance etc.).Wave beam feedback information can be one in the value that UE can be observed and be calculated, for example, RSRP, RSRQ, CQI, SNR, SINR, RSSI etc..

2) include indicating that corresponding message is the letter of UL wave beams feedback using UL licenses, in uplink message as UE When ceasing and transmitting the message, eNB can update the beam information (or can change wave beam) about corresponding UE.

Figure 26 is the figure for the frame structure for showing the wave beam feedback according to an embodiment of the present disclosure transmitted by UE.

Referring to Figure 26, wave beam feedback frame includes TC-RNTI, classification, C-RNTI and wave beam feedback information.Classification can include Indicate that corresponding message is the information for wave beam feedack.

ENB such as item 1) or 2) in receive wave beam feedback message, the transmission node for picking out corresponding message is The specified UE (using C-RNTI) of connection, and update or change and (use wave beam feedback letter about the beam information of corresponding UE Breath).

In operation 2480, wave beam can measure the transmission random access of entity 2410 using entity 2420 to wave beam to be terminated to disappear Breath.Random access can be random access competition-based.Random access end message can include random visit competition-based Ask result.ENB receives the UE information transmitted via UL granting resources, is then transmitted to UE and receives confirmation message (that is, contention resolved Scheme transmits simultaneously), thus solve the random access collision between the UE of selection same preamble.

In operation 2490, wave beam can be changed based on the wave beam feedback information received about UE using entity 2420 Beam information or change for UE wave beam.

In operation 2465, judge that the initiation wave beam feedback transmission condition of UE is not satisfied when wave beam measures entity 2410 When, in operation 2485, the special feedback resources distributed can be used to use entity 2420 to transmit feedback information to wave beam.

As described in flow chart, compared with 3GPP RACH, according to the technical support of the disclosure in each third uplink Link information transmits and transmits wave beam feedback.For example, existing random access protocol does not include via third up-link information The transmission of the wave beam feedback of transmission.However, in order to use random access protocol to transmit wave beam feedback information, embodiment of the disclosure Include feeding back relevant content with wave beam, and channel information is transmitted as in operation 2478 in channel information.For this purpose, In response to the RACH processes that UE is asked by transmitting random access preamble, eNB needs to pass for third up-link information Send the resource of distribution sufficient size so that the resource of corresponding distribution can transmit wave beam feedback.

Figure 27 A and Figure 27 B be describe according to various embodiments of the present disclosure, when using embodiment shown in Figure 23 The flow chart of the operation of UE when the shared wave beam feedback methods for receiving interval of eNB are uncompetitive method of random access.

Uncompetitive method of random access is configured referring to 3GPP LTE RACH.

Referring to Figure 27 A and Figure 27 B, it can be UE that wave beam, which measures entity 2710, and wave beam can be using entity 2720 eNB。

Operation 2740 to 2765 is referring to description as described in the operation 2340 to 2365 shown in Figure 23.

Since embodiment shown in Figure 27 A and Figure 27 B has wave beam feedback is executed via uncontested random access Feature, so in operation 2747, wave beam can distribute special random access preamble using entity 2720.Each UE is assigned Unique random access preamble.Random access preamble can be assigned to unique value so that each UE can use random Lead code is accessed to ask the distribution for being only used for the resource that wave beam feedback transmits.Random access preamble can be assigned to uniquely Value so that each UE can in order to various purposes (for example, for ask distribution for the resource that uplink transmits purpose, For asking distribution for the purpose of resource, etc. of wave beam feedback transmission) and use random access preamble.

In operation 2765, when wave beam, which measures entity 2710, judges that the initiation wave beam feedback transmission condition of UE is satisfied, In operation 2770, begin to use the wave beam of change to execute wave beam feedback.Wave beam measures entity 2710 and begins to use at random Access protocol feeds back to execute wave beam.

In operation 2772, wave beam, which measures entity 2410, can use preselected random access preamble to transmit random visit Ask lead code.Wave beam, which measures entity 2710, can use the random access preamble transmission received in operation 2747 is random to visit Ask lead code.In order to execute uncontested random access, unique random access that UE is already allocated to UE via RACH and eNB is leading Code transmits random access preamble to eNB.

Wave beam can specify transmission random using entity 2720 based on the random access preamble received in operation 2774 Access the UE of lead code.Wave beam can be based on the random access preamble received using entity 2720, and identifying and selecting UE can Wave beam.When eNB receives corresponding lead code, picking out UE has the wave beam feedback information to be transmitted, and is UE Distribute the wave beam feedback resources of corresponding amount.

When wave beam is changed, operation 2776 in, wave beam using entity 2720 can use change wave beam transmission with Machine access response.Random access response can include the resource allocation information for wave beam feedback.

In operation 2778, wave beam, which measures entity 2710, to transmit wave beam feedback information via the resource distributed.

In operation 2790, wave beam can change UE wave beams using entity 2720 based on the wave beam feedback information received Information.In addition, wave beam measures entity 2710 using entity 2720 and wave beam can also be performed wave beam change process.

In operation 2765, judge that the initiation wave beam feedback transmission condition of UE is not satisfied when wave beam measures entity 2710 When, in operation 2785, it can be fed back using the Feedback of Power resource of distribution to transmit wave beam.

Condition can be arranged in a manner of as follows in the embodiment：The wave beam feedback resource allocation of eNB is arranged to Periodic resources are distributed, and the initiation wave beam feedback transmission condition of UE is arranged to the change from optimum beam to another wave beam, first Preceding wave beam is configured so that its is unavailable, and the shared reception interval of eNB is arranged to random access and receives interval, It is described below referring to Figure 28.

Figure 28 be description it is according to an embodiment of the present disclosure for UE using random access protocol come execute wave beam measure and The flow chart of the method for wave beam feedback.

Referring to Figure 28, it can be UE that wave beam, which measures entity 2810, and wave beam can be eNB using entity 2820.

Operation 2840 to 2855 is referring to description as described in the operation 2740 to 2755 shown in Figure 27 A and Figure 27 B.

In operation 2865, wave beam measures entity 2810 and determines the need for changing optimum beam and previously best Whether wave beam can be used.It can be with the previous optimum beam (service being being currently used using the probability of previous optimum beam Wave beam) channel quality it is related less than or equal to the example of threshold value.Probability using previous optimum beam can be surveyed by UE The optimum beam of amount changes from existing optimum beam and the channel quality of previous optimum beam is [(another less than specified threshold One wave beam>Current beam+Threshold_1) and/or (current beam<Threshold_2 example)].Channel quality can be One of below：RSRP, RSRQ, CQI, SNR, SINR, PER, BER, BLER and FER.

In operation 2865, when wave beam, which measures the judgement of entity 2810, haves no need to change optimum beam, in operation 2885, It transmits feedback information via the special feedback resources of distribution.

On the other hand, in operation 2865, when wave beam, which measures the judgement of entity 2810, to be needed to change optimum beam, continue Carry out the operation 2870 of sub-operation 2871 to 2874.Operation 2871 to 2874 in, wave beam measure entity 2810 can use change The wave beam of change executes wave beam feedback.For this purpose, wave beam, which measures entity 2810, can use random access protocol.It is assisted using random access The processing of view is referring to above referring to the part of the descriptions such as Figure 23, Figure 24 A and Figure 24 B, Figure 27 A and Figure 27 B.

In operation 2880, wave beam can distribute Special reverse using entity 2820 via its recognized optimum beam Present resource.Resource allocation can be periodically carried out.Wave beam can be from wave beam feedback identification optimum beam using entity 2820.

3.1. the initiation wave beam of the UE based on uplink synchronisation feeds back transfer approach

A. when uplink is synchronized (when time unifying timer (timeAlignmentTimer, TAT) is not yet due or When person's condition is satisfied), UE asks the resource fed back for wave beam using corresponding lead code via uplink transmission, and And pass through in the eNB that can transmit the lead code with short cyclic prefix (cyclic prefix, CP) according to uplink synchronisation In interval of the scanning beam to execute reception, wave beam lead code is transmitted via the resource distributed.

A1. as eNB, using specified beams, (UE it is expected the wave changed in eNB executes the interval received by scanning beam Beam) it executes when receiving, UE transmits corresponding lead code to eNB, thus eNB is asked to change wave beam to corresponding wave beam.Herein In the case of, eNB can be immediately performed wave beam in response to the request of UE in the case where not distributing resource and change, or can transmit For ordering the signal for executing wave beam and changing.

A2. when the interval for the lead code that transmission changes for wave beam is to transmit the interval of SR, UE permits money in the UL of SR Source includes that wave beam feeds back and transmitted.

A3. when needing wave beam to change, eNB can feed back in response to wave beam and transmit wave beam and change instruction

B. when uplink is asynchronous or when although uplink synchronisation, UE not by eNB distribution have short cycle When the lead code of prefix, in intervals of the UE in eNB by scanning beam to execute reception, using optional competition-based Lead code or the uncontested lead code that is previously assigned by eNB transmit lead code, thus simultaneously from eNB requests uplink resource And via the uplink resource transmission wave beam feedback distributed.

B1. as eNB, using specified beams, (UE it is expected the wave changed in eNB executes the interval received by scanning beam Beam) it executes when receiving, UE transmits corresponding lead code to eNB, thus eNB is asked to change wave beam to corresponding wave beam.Herein In the case of, eNB can be immediately performed wave beam in response to the request of UE in the case where not distributing resource and change, or can transmit For ordering the signal for executing wave beam and changing.

B2. when the interval for the lead code that transmission changes for wave beam is RACH, UE includes wave beam in the msg.3 of RACH It feeds back and is transmitted.

B3. when needing wave beam to change, wave beam change instruction be included in competition results (contention resolution scheme) (that is, The msg.4 of RACH) in, then transmitted.

C. it is transmitted to eNB in intervals of the corresponding UE in eNB by scanning beam to execute reception and can transmit resource allocation Request message, wave beam feedback transmission message or wave beam change request message, but regardless of uplink synchronisation, thus eNB are notified to need Wave beam is wanted to change.

C1.UE can transmit previously arrangement to eNB and can be by eNB received signals.The signal can be via cloth Set very short signal (short lead code/beacon/reference signal/pilot tone letter of the very narrow frequency band transmission between UE and eNB Number).

C2. when eNB receive signal and need identification transmission signal specified UE when, can execute it is corresponding operation and For changing the operation of the scheduling wave beam of UE.

D. wave beam feedback can be in the resource for uplink transmission being previously assigned with incidentally (MAC-CE) or multiple It is transmitted with the form of (UCI) uplink data.

E. wave beam feedback method is not limited by RACH, but can be applied to execute reception by scanning beam in eNB Any interval in transmission.

In embodiment of the disclosure, when the difference between current time and the reference signal delivery time measured for wave beam When less than or equal to specified threshold, eNB can not execute the distribution of feedback resources.

Figure 29 is the feedback side based on feedback resource allocation for describing usage time threshold value according to an embodiment of the present disclosure The flow chart of method.

Referring to Figure 29, it can be UE that wave beam, which measures entity 2910, and wave beam can be eNB using entity 2920.It is grasping Make 2930 in, wave beam using entity 2920 by current time and for wave beam measure the reference signal delivery time between difference with Threshold value comparison.When the difference is less than or equal to threshold value, wave beam does not distribute feedback resources using entity 2920.When the difference is more than threshold value When, in operation 2940, wave beam distributes feedback resources using entity 2920.It should be understood that wave beam measures and periodically special feedback Resource allocation can be executed with any other order.

Operation 2940 to 2955 is referring to the description as described in operation 2840 to 2855 shown in Fig. 2.In operation 2965, wave Beam, which measures entity 2910, to be determined whether to meet the condition for transmitting feedback information using random access protocol.Operation 2965 condition can be at least one of with the relevant condition of initiation feedback method of UE as described above.

In operation 2965, do not met for transmitting feedback using random access protocol judgement when wave beam measures entity 2910 When the condition of information, in operation 2980, feedback information is transmitted via the special feedback resources of distribution.

On the other hand, it in operation 2965, is used for using random access protocol judgement satisfaction when wave beam measures entity 2910 When transmitting the condition of feedback information, in operation 2970, wave beam feedback is executed.Wave beam feedback can use selection it is current most Good wave beam executes.Operation 2970 to 2974, which corresponds to, operates 2870 to 2874 shown in Figure 28.

In embodiment of the disclosure, UE can execute wave beam measure before and transmission feed back before it is specified when It is interior to execute transmission, and ignore the special feedback resources of distribution.

Figure 30, which is that description is according to an embodiment of the present disclosure, is based on specified time, using random access or special feedback resources Come transmit feedback method flow chart.

Referring to Figure 30, it can be UE that wave beam, which measures entity 3010, and wave beam can be eNB using entity 3020.

In operation 3025, wave beam can distribute the resource fed back for wave beam using entity 3020.It is fed back for wave beam Resource can be periodical special feedback resources.Wave beam can be come using entity 3020 using the optimum beam that it has been known Distribute resource.

In operation 3030, when wave beam measures the reference signal reception that entity 3010 is measured by current time and for wave beam Between between difference and threshold value comparison.Be on duty more than or equal to threshold value when, operation 3035 in, wave beam measure entity 3010 via point The special feedback resources transmission feedback information matched.When being on duty less than threshold value, in operation 3037, wave beam measures entity 3010 and does not hold Row feedback, and ignore the special feedback resources distributed.In the case, wave beam measures entity 3010 and can be based on operating Process after 3045 executes wave beam feedback.

Operation 3045 to 3080 is referring to description as described in the operation 2945 to 2980 shown in Figure 29.

In order to change the eNB wave beams (or UE wave beams) for being communicated with UE, command frame is changed by the wave beam of eNB transmission It needs to include the id information for needing wave beam to be sharing about eNB and UE, such as, eNB wave beam ID, UE wave beams ID, wave beam are to ID etc..

Figure 31 A and Figure 32 B are the figures for showing the frame structure according to an embodiment of the present disclosure changed for wave beam.

Referring to Figure 31 A, the frame (or MAC-CE, PHY DCI, MAC payload) of the wave beam ID including 9 bits is shown Structure.For example, MAC CE, which can be wave beam, changes command M AC CE.PHY DCI can be referred to by xPDCCH orders (order) It leads (instruct).

- BI (9 bit)：Indicate the field of beam index

-R：Reserved bit is arranged to " 0 "

Referring to Figure 31 B, when eNB specifies one in the served beams of UE and selected wave beam is changed into its expectation Wave beam when, show include the frame (or MAC-CE, PHY DCI, MAC payload) of the desired wave beam ID of 9 bits structure. For example, MAC CE, which can be wave beam, changes command M AC CE.PHY DCI can be instructed by xPDCCH orders.

- BI_old (9 bit)：Instruction UE has known and has needed the field of beam index changed

- BI_new (9 bit)：The field for the beam index that instruction will be used newly, rather than BI_old.

-R：Reserved bit is arranged to " 0 "

Figure 32 A and Figure 32 B are the figures for showing the frame structure changed for wave beam according to various embodiments of the present disclosure.

Referring to Figure 32 A, show include the frame (or MAC-CE, PHY DCI, MAC payload) of the wave beam ID of 3 bits knot Structure.

- RBI (3 bit)：This field indicates beam index；

-R：Reserved bit is arranged to " 0 "

Referring to Figure 32 A, show include the frame (or MAC-CE, PHY DCI, MAC payload) of the wave beam ID of 3 bits knot Structure

- RBI_old (3 bit)：Instruction UE has known and has needed the field of beam index changed

- RBI_new (3 bit)：The field for the beam index that instruction will be used newly, rather than RBI_old.

-R：Reserved bit is arranged to " 0 "

In the following description, the operation of eNB and the operation of the eNB described in previous embodiment are described.

In order to support the UE as operated in embodiment of the disclosure and execute wave beam by eNB to change, wave beam changes Change method is implemented as follows.

1. a kind of specify signal to and guide the method for changing wave beam to be communicated with UE for eNB transmission

ENB, which changes it, to be carried in the wave beam communicated later with specified UE, and via described below operate to UE For corresponding information.

Figure 33 is the flow chart for the wave beam change method for describing eNB according to an embodiment of the present disclosure.

Referring to Figure 33, in operation 3305, eNB can be transmitted wave beam measuring signal.ENB can periodically transmit wave beam Measuring signal.In operation 3310, eNB can distribute wave beam feedback resources to the UE connected.Wave beam feedback resources can be Periodically special feedback resources.

In operation 3315, eNB can distribute eNB wave beams and change reception interval and be notified between being distributed to each UE Every.

In operation 3320, eNB receives wave beam feedback from UE.The private resource or connecing that eNB can be distributed via it It receives wave beam to change in interval, wave beam feedback is received from UE.ENB can be via periodically special feedback resources or in reception wave beam Change and receive in interval, receives and feed back from each UE.In embodiment of the disclosure, eNB can via any resource/interval from UE receives wave beam feedback.

In operation 3325, eNB can determine whether the wave beam applied to UE needs to be changed.In operation 3325, when When eNB judgements are needed not be changed applied to the wave beam of UE, in operation 3340, it is continuing with existing wave beam.For example, working as ENB, which is received, not to be asked to change the corresponding wave beam feedback by the UE existing wave beams used or is based on corresponding feedback information Analysis result judgement wave beam change when needing not be changed, be continuing with existing wave beam.

On the other hand, in operation 3325, when eNB judges to need to change the wave beam applied to UE, in operation 3330, It changes request message to UE transmission wave beams.For example, fed back when eNB receives the corresponding wave beam for changing comprising wave beam and asking, Or based on corresponding feedback information analysis result judgement need change wave beam change when, determination served beams are changed into Corresponding wave beam, and change request message to UE transmission wave beams.In operation 3335, eNB will in preset or arrangement time Served beams change into corresponding wave beam.

Since eNB receives specify information (for example, uplink beam feedback information), so eNB may be needed in spy Transmission wave beam changes signal in section of fixing time (for example, Timer_feedback_change).

ENB can be informed via RRC information (RRC IE), MAC message (MAC-CE) and PHY message (PHY DCI) to UE It will transmit wave beam and changes signal in special time period after receiving specify information.In the case, due to corresponding Value describes in a standard, so it can be the value that UE or eNB have known when it is carried out.

Wave beam, which changes signal, can be carried out or standardize, so that eNB can be transmitted in any timing.

1.1. it is used for the method that eNB determines the need for wave beam change

It is a kind of determine the need for wave beam change method be done as follows.

A. the channel quality of served beams (scheduling wave beam) or performance are less than specified threshold

A1. current beam measured value<Threshold value

A2. measured value can be RSRP, RSRQ, SNR, SINR, CQI, BER, FER, PER, BLER etc..If measured value can For determining channel quality, then measured value can also be any value.

B. the channel quality of any other wave beam other than served beams (scheduling wave beam) or performance are greater than or equal to Specified threshold

B1. new beam measurement>Threshold value

B2. measured value can be RSRP, RSRQ, SNR, SINR, CQI, BER, FER, PER, BLER etc..If measured value can For determining channel quality, then measured value can also be any value.

C. compared with served beams, the channel quality or performance of another wave beam are greater than or equal to specified threshold/offset

C1. new beam measurement>Current beam measured value+threshold value

C2. measured value can be RSRP, RSRQ, SNR, SINR, CQI, BER, FER, PER, BLER etc..If measured value can For determining channel quality, then measured value can also be any value.

D. the channel quality of served beams (scheduling wave beam) or performance are less than specified threshold, and in addition to served beams (are adjusted Spend wave beam) except any other wave beam channel quality or performance be greater than or equal to specified threshold

D2. measured value can be RSRP, RSRQ, SNR, SINR, CQI, BER, FER, PER, BLER etc..If measured value can For determining channel quality, then measured value can also be any value.

Threshold value can be：Constant is set according to the fixed value of standard, eNB using RRC information, MAC-CE, PHY DCI etc. The value set or the value selected by UE.

E. timer (for example, feedback timer) has expired

E1. uplink beam feedback is not received during the time of corresponding timer, or

E2. during the time of corresponding timer uplink resource allocation not by transmission (execution), or

E3. uplink transmission is not successfully received (execution), etc. during the time of corresponding timer.

F. derived served beams (that is, eNB wave beams, UE wave beams or wave beam to) are measured from wave beam to be not included in and reported by UE In preceding K (or K% from top) in the ranking for the entire wave beam (that is, eNB wave beams, UE wave beams or wave beam to) accused.

G. derived served beams (that is, eNB wave beams, UE wave beams or wave beam to) are measured from wave beam to be included in and reported by UE Entire wave beam (that is, eNB wave beams, UE wave beams or wave beam to) ranking in rear K (or K% from bottom) in.

H. transfer request the response from UE information (MAC PDU, MAC-CE, data, PHY grouping etc..) it Afterwards, response (HARQ ACK, RLC ACK, feeding back ACK etc.) is just received until have passed through a period (timer).

H1. corresponding response request message can be the bit for being present in MAC message or the specified location in default PHY (indicator).

H2. corresponding response request message can be predetermined sequence.

H3. it needs to receive corresponding response within the preset period after transmitting eNB information.

1.2. it is used for the method that eNB changes wave beam

- eNB/UE, which can be used, to be included in since new in the wave beam change request signal the corresponding wave beam change time Wave beam.A kind of method changing wave beam of description below and wave beam change timing point (time).

Wave beam, which changes the time, can have value as absolute time, for example, subframe number, time-gap number, GPS time, Radio frame number etc..

Wave beam change the time can have as from wave beam change request signal transmission/receiving time, in response to wave Beam changes transmission/receiving time of the ARQ ACK (the last one) of request signal or changes request signal in response to wave beam Transmission/receiving time of HARQ ACK (the last one) acts the value of the relative time after have passed through specified time (for example, subframe Number, time-gap number, GPS time, radio frame number etc.).

Wave beam changes the time can be designated in wave beam changes request signal, and can be transmitted via the signal/ It receives, another signal (for example, RRC IE, MAC-CE, PHY DCI etc.) or in a standard is configured to by eNB according to each UE It is designated as optional network specific digit (numeral) (offset).Alternatively, eNB can include wave beam at broadcast message (MIB, SIB etc.) Change the time, and is notified via broadcast information messages.

It is following that the reality by RACH processes using LTE is provided in order to use beam information feedback and wave beam to change method The various embodiments applied.

The RACH processes proposed by the existing RACH processes of application are considered by message is numbered as follows.

Message 1 (MSG1)：UE transmits random access preamble via RACH channels.

Message 2 (MSG2)：ENB is via the transmission random access response of PDCCH channels.

Message 3 (MSG3)：UE is via PUSCH channel transmission buffer state reports (BSR), up-link information or wave beam Feedback information.

Message 4 (MSG4)：ENB transmits contention resolution scheme via PDCCH channels.

The embodiment can be applied to UE and execute initial cell access, the cell access after RLF occurs, in the handover period Between the access in Target cell, the wave beam when determining wave beam misalignment restore, due to paging receive or uplink data Cell access caused by establishment etc. at the idling mode.

For example, when UE executes initial cell access, RACH processes described below.

When UE obtain the downlink synchronization from eNB and select its can be communicated with eNB by wave beam When (its signal quality is greater than or equal to the signal quality or threshold value of optimum beam), transmitted using resource corresponding with wave beam RACH lead codes.It should be understood that beam information can also be included in corresponding RACH lead codes or immediately RACH lead codes by UE In resource later, and transmitted via uplink.UE receives the confirmation message in response to RACH lead codes from eNB (that is, RAR message), and determine whether RAR message includes wave beam feedback command information.When RAR message includes wave beam feedback command When information, UE transmits feedback according to wave beam feedback command information, in response to the wave beam of eNB.Wave beam feedback command information include with At least one of lower items：The number of the wave beam of strength level for feedback signal, for transmit wave beam feedback resource, The transmission timing of wave beam feedback, refers to the format (including the L1 signals of UCI or the higher-layer messages for including MAC CE) of wave beam feedback Lead by existing wave beam change into report wave beam feedback wave beam (UE initiatively or from eNB receive wave beam change indicator signal Existing wave beam is changed into reported wave beam later) indicator format and when existing wave beam be changed to report wave The timing information when wave beam of beam feedback.In embodiment of the disclosure, the distribution about the resource for transmitting wave beam feedback Information can be received by with MSG4 multiplexings or after MSG4.

In order to support the wave beam via the UE of MSG3 to feed back, each eNB needs to distribute a certain amount of resource, so that receiving The UE of RA lead codes can at least execute wave beam feedback transmission, and transmit scheduling information via RAR.When MSG3 is fixed according to standard When the RACH competition-based of justice transmission wave beam feedback, all eNB are required for distributing a certain amount of resource, so that executing base Wave beam feedback transmission can be at least executed in the UE of the RACH of competition, and scheduling information is transmitted via RAR.

The MSG4 for changing instruction message comprising the wave beam changed for wave beam can be transmitted.

The eNB and UE that transmission/reception of wave beam feedback is executed according to the wave beam feedback command information via RAR message can be with Change wave beam according to the wave beam feedback information of UE, or can after transmission/reception wave beam feedback implementation procedure, tie up simultaneously Hold current beam.

After receiving RAR message, UE transmits wave beam feedback message/letter according to wave beam feedback command together with MSG3 Number.Alternatively, after receiving RAR message, UE transmits MSG3, then transmits wave beam feedback according to wave beam feedback command information Message/signal.Alternatively, after receiving RAR message, UE is according to wave beam feedback command information, in the forward pass of transmission MSG3 Send wave beam feedback message/signal.Statement is referred to as transmitting using the MSG3 of individual resource and MSG3 " after MSG3 transmission " Timing and MSG4 receive the interval between timing.Statement corresponds to " after MSG3 transmission " using individual resource and MSG3 MSG3 transmits the timing after being received with MSG4.Statement corresponds to " after MSG3 transmission " using individual resource and MSG3 Timing after MSG3 transmission or before MSG4 receptions.

When UE is arranged to that existing wave beam is initiatively changed into the wave beam of report according to wave beam feedback command information, UE Change timing in wave beam and existing wave beam is changed into reported wave beam, is then communicated with eNB.

When UE is arranged to receive wave beam change indicator signal from eNB and executes wave according to wave beam feedback command information When beam changes, UE receives wave beam from eNB and changes indicator signal, and existing wave beam is changed into and is referred to by wave beam change indicator signal The wave beam led, is then communicated with eNB.Wave beam changes timing information and can be set to system value or can be connect from eNB It receives.

Wave beam changes indicator signal and corresponds to the signal transmitted via MSG4, the L1/ higher levels transmitted together with MSG4 Signal or the signal for opening transmission with MSG4 points.When wave beam changes indicator signal corresponding to the signal of transmission is opened with MSG4 points, The timing that transmits that wave beam changes indicator signal corresponds to the interval between MSG3 transmission timing and MSG4 reception timings.Work as wave beam When changing indicator signal corresponding to the signal of transmission is opened with MSG4 points, the transmission timing that wave beam changes indicator signal corresponds to Timing before MSG3 transmission.When wave beam changes indicator signal corresponding to the signal of transmission is opened with MSG4 points, wave beam changes Become the transmission timing of indicator signal corresponding to the timing after MSG4 receptions.

When RAR message does not include wave beam feedback command information, UE can be passed via the MSG3 transmitted in response to RAR message Wave beam is sent to feed back.When via MSG3 transmission wave beam feedbacks, eNB can transmit wave beam via MSG4 or individual signaling manipulations and change Become indicator.

In the following description, various embodiments are described with reference to the drawings.

Figure 34 is the figure for describing wave beam feedback method according to an embodiment of the present disclosure.

Referring to Figure 34, wave beam feedback is included in MSG3 or is multiplexed with MSG3.Wave beam changes indicator and is included in MSG4 Or it is multiplexed with MSG4.

UE executes the transmission of random access preamble.UE can execute random access preamble using the wave beam to be changed Transmission.ENB is based on random access preamble transmission random access response.Random access response can include guidance request wave beam The information of the report of feedback.UE receives random access and responds and execute the transmission of MSG3.In the case, UE is transmitted to eNB and is wrapped The MSG3 or the MSG3 feedback multiplexed with wave beam of the feedback containing wave beam.ENB receives MSG3 and transmits MSG4 to UE.MSG4 can include Wave beam changes instruction.MSG4, which is changed instruction multiplexing with wave beam and changed using wave beam, to be indicated to transmit.After the transmission of MSG4, Wave beam can be changed.Wave beam can be executed after it have passed through a period from MSG4 transmission to change.

Figure 35 is the figure for describing wave beam feedback method according to an embodiment of the present disclosure.

Referring to Figure 35, from the process of the transmission for being transmitted to MSG3 of random access preamble referring to the description referring to Fig. 3. After MSG3 is received, eNB executes the transmission of MSG4.One of embodiment shown in Figure 35 different from embodiment shown in Figure 34 Divide is to transmit wave beam after transmitting MSG4 to change instruction.ENB transmits MSG4, is then transported on wave beam and changes instruction.In transmission wave Beam changes after instruction, thus it is possible to vary wave beam.

Figure 36 is the figure for describing wave beam feedback method according to an embodiment of the present disclosure.

Referring to Figure 36, the embodiment of Figure 36 is similar with the embodiment of Figure 35, changes instruction in addition to they are respectively provided with wave beam Different transmission timing points except.After transmitting MSG3, forward direction UE transmission wave beams of the eNB in transmission MSG 4 changes instruction. After transmitting wave beam change instruction, change wave beam.ENB uses changed wave beam to execute the transmission of MSG4.

Figure 37 is the figure for describing wave beam feedback method according to an embodiment of the present disclosure.

Referring to Figure 37, the embodiment of Figure 37 is similar with the embodiment of Figure 36, changes in addition to they are respectively provided with different wave beams Become except timing point.After eNB executes wave beam change instruction and the transmission of MSG4, change wave beam.

Figure 38 is the figure for describing wave beam feedback method according to an embodiment of the present disclosure.

Referring to Figure 38, the embodiment of Figure 38 is similar with the embodiment of Figure 36 or Figure 37, but does not execute wave beam explicitly and change Become the transmission of instruction.Embodiment shown in Figure 37 does not execute individual wave beam change signaling manipulation and (changes without implicit wave beam Become instruction).After executing the reception of MSG3 or the transmission of MSG4 in eNB, change wave beam.

Figure 39 is the figure for describing wave beam feedback method according to an embodiment of the present disclosure.

Referring to Figure 39, the embodiment of Figure 39 has the transmission for changing instruction with the wave beam of embodiment shown in Figure 36 and Figure 37 Timing point and wave beam change the transmission timing point and wave beam change timing point that the different wave beam of timing point changes instruction.MSG3 includes Wave beam is fed back.MSG3 is not feedback multiplexed with wave beam.Wave beam is via individual process feedback.It is responded receiving random access Afterwards, UE executes the transmission of wave beam feedback information before transmitting MSG3.ENB receives wave beam feedback and execution wave beam is and guided to change. After instructing wave beam to change, change wave beam.After wave beam change, UE executes the transmission of MSG3, and eNB executes MSG4's Transmission.MSG3 and MSG4 can be transmitted via the wave beam changed.

Figure 40 is the figure for describing wave beam feedback method according to an embodiment of the present disclosure.

Referring to Figure 40, the difference of the embodiment of Figure 40 and the embodiment of Figure 39 is：The delivery time point of MSG3 is each other not Together.After the transmission of wave beam feedback, UE executes the transmission of MSG3.After the transmission of MSG3, eNB executes wave beam and changes instruction Transmission.After instructing wave beam to change, change wave beam.MSG4 can be transmitted via the wave beam changed.

Figure 41 is the figure for describing wave beam feedback method according to an embodiment of the present disclosure.

Referring to Figure 41, compared with the embodiment of Figure 39, the embodiment of Figure 41 does not execute individual wave beam and changes indicator Transmission.After the reception of wave beam feedback, eNB does not execute the transmission that individual wave beam changes instruction.However, from wave beam feedback After have passed through a period, change wave beam.

Figure 42 is the figure for describing wave beam feedback method according to an embodiment of the present disclosure.

It is referring to the mutual difference of the embodiment of Figure 42, Figure 42 and Figure 39：They are respectively provided with the difference of wave beam feedback It transmits timing point and wave beam changes the different transmission timing points of instruction.After transmission/reception of MSG1~MSG4, UE executes wave The transmission of beam feedback.Hereafter, eNB executes the transmission that wave beam changes instruction.After the transmission that wave beam changes instruction, change wave Beam.

Figure 43 is the figure for describing wave beam feedback method according to an embodiment of the present disclosure.

Referring to Figure 43, the difference of the embodiment of Figure 43 and the embodiment of Figure 42 is：It does not include for transmitting individually Wave beam changes the process of instruction.Wave beam, which changes instruction, implicitly to be executed.It can be instructed during RAR is transmitted or MSG4 is transmitted Wave beam feeds back transmission resource information.After the transmission of MSG4, wave beam can individually be instructed to feed back transmission resource information.

Figure 44 is the figure for describing wave beam feedback method according to an embodiment of the present disclosure.

Referring to Figure 44, the difference of the embodiment of Figure 44 and the embodiment of Figure 43 is：Wave beam report instruction is not included in RAR In.When RAR message do not include wave beam feedback command information when, can respectively wave beam feedback and wave beam change instruction transmission/ After reception, executes wave beam via MSG3 and MSG4 and change.MSG4 can include that explicit wave beam changes instruction.Alternatively, MSG4 and explicit wave beam, which change command signal, to be multiplexed each other.

In the case where going to the RACH processes of the transfer of Target cell, UE and eNB are not executing MSG3's or MSG4 Transmission/reception of the RAR message comprising wave beam report command information is executed in the case of transmission/reception, and in transmission/reception It is handled by individual signaling after RAR message and executes transmission/reception that wave beam feedback changes signal with wave beam.In this situation Under, wave beam reports that command information can include at least one of the following terms：About the resource for wave beam feedback signal Information is distributed, changes the condition of signal about whether the wave beam of transmission implicit/explicit and changes signal about for wave beam The distribution information of resource.

Figure 45 is the figure for describing wave beam feedback method according to an embodiment of the present disclosure.

Referring to Figure 45, transfer is then executed, it can be after reporting transmission/reception of RAR of command information comprising wave beam Transmit wave beam feedback.Wave beam, which changes, to change indicator based on implicit wave beam to execute.

Figure 46 is the figure for describing wave beam feedback method according to an embodiment of the present disclosure.

Referring to Figure 46, eNB can distribute resource by using the wave beam via RAR reception RACH lead codes temporarily. In this case, when eNB receives a RACH lead code, the resource allocation for a wave beam is executed.When eNB is received From two or more RACH lead codes that identical UE is transmitted when, best one in received lead code can be used To transmit RAR.Wave beam feedback may be embodied in MSG3, or can be multiplexed with MSG3.Wave beam changes instruction and may be embodied in It can be multiplexed in MSG4 or with MSG4.

Figure 47 is the figure for describing wave beam feedback method according to an embodiment of the present disclosure.

Referring to Figure 47, eNB can instruct to execute wave beam change, and the best of RACH lead codes is received via RAR to use Wave beam is as served beams.In the case, it when eNB receives a RACH lead code, executes for wave beam Resource allocation.When eNB receives two or more RACH lead codes transmitted from identical UE, it can use and be received Best one in lead code transmits RAR.Existing wave beam is changed into corresponding wave beam by eNB and UE, then executes MSG3 With the transmission of MSG4.

Figure 48 is the figure for describing wave beam feedback method according to an embodiment of the present disclosure.

Referring to Figure 48, after changing transmission/reception of RAR of instruction comprising wave beam, thus it is possible to vary wave beam.Based on explicit Wave beam change indicator come execute wave beam change.Corresponding wave beam, which changes instruction, to open transmission with RAR points.

Wave beam changes instruction can be in the form of MAC-CE comprising in the message, or can be in DCI with the shape of field Formula is multiplexed.

In the case where going to the RACH processes of the transfer of Target cell, UE and eNB are not executing MSG3's or MSG4 RAR message is executed in the case of transmission/reception and wave beam changes transmission/reception of instruction message, and served beams are changed To corresponding wave beam.In the case, wave beam report command information can include at least one of the following terms：About for The distribution information of the resource of wave beam feedback signal changes the condition of signal, Yi Jiguan about whether the wave beam of transmission implicit/explicit In the distribution information for the resource for changing signal for wave beam.

Figure 49 is the figure for describing wave beam feedback method according to an embodiment of the present disclosure.

Referring to Figure 49, after changing transmission/reception of RAR of instruction comprising wave beam, thus it is possible to vary wave beam.Based on explicit Wave beam change indicator come execute wave beam change.Corresponding wave beam, which changes instruction, to open transmission with RAR points.

In above-mentioned embodiment of the disclosure, RACH can be replaced with the SR request signals (or SR asks lead code) of UE Lead code can permit transmission to replace RAR to transmit with the UL of eNB, can use and use eNB as the UL licenses for SR transmission And the message of the resource transmission distributed replaces MSG3, and can use and be used as the UL transmitted for SR via eNB in response to UE License and the message of the eNB of the message of resource transmission distributed replaces MSG4.

In above-mentioned embodiment of the disclosure, the transmission of RACH correlations can also be a part of special RACH.

Figure 50 is the block diagram of UE according to an embodiment of the present disclosure.

Referring to Figure 50, UE 5000 can include transceiver 5010 and the control of transmission/reception for executing signal Device 5030.UE 5000 can execute the transmission/reception of signal, information, message etc. via transceiver 5010.5030 energy of controller Enough control all operations of UE 5000.Controller 5030 can include at least one processor.Controller 5030 can control The operation for the UE that face describes in embodiment of the disclosure.

Controller 5030 can receive wave beam feedback trigger condition and determine if to meet wave beam feedback trigger condition.When When meeting wave beam feedback trigger condition, controller 5030 can trigger the wave beam feedback of the MAC layer from UE, and be based on wave beam Feedback triggers to control the transmission of the MAC CE comprising wave beam feedback information.It may include following item that wave beam, which feeds back trigger condition, Part：The channel measured value of at least one wave beam is more than the sum of the channel measured value of predetermined threshold value and served beams.

When the uplink of UE is synchronized, controller 5030 be able to carry out control operation so that can use via The resource for the uplink distribution that SR processes receive transmits wave beam feedback information.It is executed to transmit SR and transmitted based on SR Wave beam is fed back, and UE can receive the information of the resource about distribution.Resource allocation periodically or can be executed aperiodically.

When the uplink of UE by it is synchronous when, controller 5030 is able to carry out control operation so that can via with Machine access protocol transmits wave beam feedback information.When triggering wave beam feedback, controller 5030 transmits random access preamble, receives Confirm in response to the random access of the transmission of random access preamble, transmission wave beam feedback is confirmed based on the random access received Information, and receive in response to the random access competition results of the wave beam feedback information transmitted.Transmit wave beam feedback information Message can be the MSG3 in random access protocol.

Controller 5030 receives wave beam and changes instruction.After receiving wave beam and changing instruction, controller 5030 is passing through After the preset period, wave beam is executed based on wave beam feedback information and is changed.

Referring to Figure 51, eNB 5100 can include transceiver 5110 and the control of transmission/reception for executing signal Device 5130.ENB 5100 can execute the transmission/reception of signal, information, message etc. via transceiver 5110.5130 energy of controller Enough control all operations of eNB 5100.Controller 5130 can include at least one processor.Controller 5130 can control The operation of the eNB described in embodiment of the disclosure above.

Controller 5130 can transmit wave beam to UE and feed back trigger condition, and be received from UE comprising wave beam feedback information MAC CE.When controller 5130 judges that the MAC layer of UE meets wave beam feedback trigger condition, wave beam feedback information can be triggered. For example, trigger condition can be fed back to trigger wave beam according to the determination of MAC layer.It can also include at least that wave beam, which feeds back trigger condition, The channel measured value of one wave beam is greater than or equal to the condition of the sum of channel measured value of predetermined threshold value and served beams.

When the uplink of UE is synchronized, controller 5130 can distribute uplink resource via SR processes to UE, And receive wave beam feedback information via the uplink resource distributed.

When the uplink of UE by it is synchronous when, controller 5130 is able to carry out control operation so that can via with Machine access protocol receives wave beam feedback information.Controller 5130 receives random access preamble from UE, random based on what is received It accesses lead code transmission random access to confirm, receives the wave beam feedback information of the transmission confirmed in response to random access, and base Random access competition results are transmitted in the wave beam feedback information received.The message for receiving wave beam feedback information can be visited at random Ask the MSG3 in agreement.

Controller 5130 changes instruction based on the wave beam feedback information transmission wave beam received.Change instruction in transmission wave beam Later, controller 5130 executes wave beam based on wave beam feedback information and changes after it have passed through the preset period.

As described above, system according to an embodiment of the present disclosure, method and apparatus can be in the systems based on Wave beam forming Middle execution beam tracking and wave beam feedback operation.The system, method and apparatus can also be total in the UE and eNB using mimo antenna Wave beam feedback and wave beam management (beam tracking) are executed in the wireless system deposited.

Although the disclosure, those skilled in the art has shown and described in the various embodiments by reference to the disclosure It will be understood that, can carry out various changes of form and details wherein, without departing from such as appended claims and its equally Spirit and scope of the present disclosure defined in object.

Claims

1. a kind of method of the wave beam feedback of terminal, this method include：

Wave beam, which is received, from base station triggers deviant；

Measure the signal quality of the signal quality and at least one wave beam of served beams；

Identify whether the signal quality of at least one wave beam is tactile higher than the signal quality of the served beams and the wave beam Send out the sum of deviant；

Based on recognition result triggering wave beam feedback；And

It is fed back and is triggered based on wave beam, transmit wave beam feedback information.

2. the method for claim 1, wherein medium access control (MAC) layer of the wave beam feedback from the terminal Triggering.

3. the method as described in claim 1 further includes：

If the uplink of the terminal is synchronized, the uplink resource permitted by scheduling request (SR) process is used To transmit the wave beam feedback information；And

If the uplink of the terminal is not synchronized, the wave beam feedback information is transmitted via random access procedure.

4. method as claimed in claim 3, wherein the random access procedure includes：

If triggering wave beam feedback, random access preamble is transmitted；

The random access received in response to the transmission of the random access preamble responds；

Based on the reception of random access response, the wave beam feedback information is transmitted；And

Receive the random access competition results of the transmission in response to the wave beam feedback information.

5. a kind of terminal, including：

Transceiver is configured as transmitting and receives signal；And

At least one processor, is configured as：

Wave beam, which is received, from base station triggers deviant,

The signal quality of the signal quality and at least one wave beam of served beams is measured,

Identify whether the signal quality of at least one wave beam is tactile higher than the signal quality of the served beams and the wave beam The sum of deviant is sent out, based on recognition result triggering wave beam feedback, and

6. terminal as claimed in claim 5, wherein medium access control (MAC) layer of the wave beam feedback from the terminal Triggering.

7. terminal as claimed in claim 5, wherein at least one processor is additionally configured to：If the terminal Uplink is synchronized, then the wave beam feedback is transmitted using the uplink resource permitted by scheduling request (SR) process Information.

8. terminal as claimed in claim 5, wherein at least one processor is additionally configured to：If the terminal Uplink is not synchronized, then the wave beam feedback information is transmitted via random access procedure.

9. terminal as claimed in claim 8, wherein at least one processor is additionally configured to：

If triggering wave beam feedback, random access preamble is transmitted,

The random access received in response to the transmission of random access preamble responds,

Based on the reception of random access response, the wave beam feedback information is transmitted, and

10. terminal as claimed in claim 5, wherein the signal quality of the served beams includes the ginseng of the served beams Signal reception power (RSRP) is examined, and

Wherein, the signal quality of at least one wave beam includes the RSRP of at least one wave beam.

11. terminal as claimed in claim 5, wherein at least one processor is additionally configured to：

It receives wave beam and changes instruction, and

After it have passed through the preset period, wave beam is changed based on the wave beam feedback information received.

12. a kind of method receiving wave beam feedback in a base station, the method includes：

Wave beam triggering deviant is transmitted to terminal；And

Wave beam feedback information is received from the terminal,

Wherein, if the signal quality of at least one wave beam higher than served beams signal quality and wave beam triggering deviant it With the wave beam feedback information is then triggered by the terminal.

13. a kind of base station, including：

Transceiver is configured as transmitting and receiving signal；And

At least one processor, is configured as：

Wave beam triggering deviant is transmitted to terminal, and

Wave beam feedback information is received from the terminal,

14. base station as claimed in claim 13, wherein medium access control of the wave beam feedback information from the terminal (MAC) layer triggers,

Wherein, the signal quality of the served beams includes the Reference Signal Received Power (RSRP) of the served beams, and

15. base station as claimed in claim 13, wherein at least one processor is additionally configured to：

If the uplink of the terminal is synchronized, by scheduling request (SR) process to the terminal distribution uplink Resource, and receive the wave beam feedback information via the uplink resource distributed；And

If the uplink of the terminal is not synchronized, random access preamble is received from the terminal, in response to described The reception of random access preamble and transmit random access response, receive the wave beam of transmission responded in response to the random access Feedback information, and transmit random access competition results in response to the reception of the wave beam feedback information.