CN108934043A - Beam tracking method, user equipment and base station using same - Google Patents
Beam tracking method, user equipment and base station using same Download PDFInfo
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- CN108934043A CN108934043A CN201711460860.3A CN201711460860A CN108934043A CN 108934043 A CN108934043 A CN 108934043A CN 201711460860 A CN201711460860 A CN 201711460860A CN 108934043 A CN108934043 A CN 108934043A
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- 238000000034 method Methods 0.000 title claims abstract description 57
- 238000005259 measurement Methods 0.000 claims abstract description 122
- 108010076504 Protein Sorting Signals Proteins 0.000 claims abstract description 35
- 238000004891 communication Methods 0.000 claims description 37
- 230000005540 biological transmission Effects 0.000 claims description 36
- 230000004044 response Effects 0.000 claims description 15
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- 230000008859 change Effects 0.000 claims description 2
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- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 claims 1
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- 235000008434 ginseng Nutrition 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 13
- 230000011664 signaling Effects 0.000 description 9
- 238000009826 distribution Methods 0.000 description 7
- 230000007246 mechanism Effects 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
- 238000003860 storage Methods 0.000 description 6
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- 241001269238 Data Species 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/046—Wireless resource allocation based on the type of the allocated resource the resource being in the space domain, e.g. beams
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
Abstract
The invention discloses a beam tracking method and user equipment and a base station using the same, wherein the method comprises the following steps: receiving a first plurality of reference signal sequences including a first reference signal sequence associated with a first cell beam and a second reference signal sequence associated with a second cell beam over a first time period; measuring a beam quality comprising a first measurement of a first cell beam and a second measurement of a second cell beam; generating a measurement reward based on the beam quality; and transmitting the measurement report.
Description
Technical field
The beam tracking method and use institute that the disclosure relates in a kind of multiple cell group of millimeter-wave communication system
State user equipment and the base station of method.
Background technique
Due to follow-on wireless communication system demand better performance, so some aspects of next generation communication system will
Finishing comprehensively.Specifically, since next generation communication system will be transmitted with higher carrier frequencies, so the electricity at upper frequency
Its propagation of magnetic wave will be lost by larger path.For example, in millimeter wave (millimeter wave, mmWave) frequency model
Decaying around microwave frequency range will be significantly higher than by enclosing the electromagnetic wave of surrounding its decaying, thus will need beam forming with
It is transmitted in millimeter-wave frequency range.
The example that Fig. 1 illustrates the antenna pattern of different transmission wavelengths.In general, for wavelength in cm range
The communication system operated in the microwave band of (that is, cmWave) is tended to using a small amount of antenna.Tendency is the list of long distance transmission
The antenna pattern of a microwave frequency antenna 101 has the wide visual field (field-of-view, FoV) coverage rate, also, for making
With the 3G/ for realizing the higher microwave band for receiving SNR mass with small number of base station (base station, BS) antenna
For 4G communication system, it is intended to which the single microwave frequency antenna 101 of long distance transmission is typical.However, smaller strip is wide
(BW) lower data rate caused by is present in such system.In order to increase data rate, millimeter by using larger BW
Wave frequency band is considered to be used in future communication systems (for example, 5G system).The antenna pattern of single millimeter wave unifrequency antenna 102
Relatively short distance will be covered；However, via using millimeter wave antenna array to carry out beam forming, millimeter wave under same transmission power
Millimeter-wave radiation directional diagram in beam forming result with relatively narrow FoV coverage rate 103 can extend to farther away place.In order to
It realizes the wide FoV coverage rate such as 3G/4G communication system, multiple wave beams 104 can be used at BS, and BS wave beam will be used for
Wave beam pan mechanism account for.Specifically, each BS wave beam 104 can have the different beams sequence for wave beam pan
Arrange ID (that is, q-th of wave beam has beam sequences ID q).In general, logical using the millimeter wave of the antenna array of smaller size
Letter system is tended to relatively short distance and wider coverage rate；And use the millimeter-wave communication system of the antenna array of larger size
Tend to relatively long distance and relatively narrow coverage rate.
The transport frame of Millimeter-wave Wireless Communication System can be categorized into two classifications based on Radio Access Interface.First
Classification is multiple radio access technologies (multiple radio access technology, more RAT), and second category is single
A radio access technologies (single radio access technology, single RAT).Fig. 2 illustrates that the 5G of first category is more
The example of the mono- RAT communication system of the 5G of RAT communication system and second category.More RAT systems have at least two RAT, for example,
LTE system and millimeter-wave systems have described as by while the LTE+ millimeter wave integration system for being used for communicating coexist.Citing
For, control signaling can be transmitted via conventional LTE communication frequency is used, and user data can be via using millimeter wave
Communication frequency transmits.In this case, it is possible to polymerize (carrier aggregation, CA) scheme using carrier wave.Number of users
According to can via use such as auxiliary component carrier wave (secondary component carrier, SCC) on millimeter wave frequency band
Transmission, but control signal can via use main component carrier wave (primary component carrier, PCC) micro-
It is transmitted in wave (that is, cmWave) frequency.Network login can be executed by using PCC and via cmWave, this is because control
The successful verification and measurement ratio of signaling can operate in larger coverage rate, relatively high mobility and lower SNR situation.On the other hand, second
Single RAT communication system of classification will use only a radio access technologies for communications applications, and method is using millimeter wave frequency
Bring both transmission user data and control signal.Network, which logs in, to be executed via the carrier wave in millimeter wave frequency band.In this way,
The successful verification and measurement ratio of control signaling may be needed in smaller coverage rate, compared with operating in Hypomobility and higher SNR situation.Then,
Beam forming technique can be used.It is worth noting that, only considering the list of second category for the exemplary embodiment of the disclosure
Millimeter wave RAT.
Such as next-generation (that is, 5G) communication system of the stand alone type described in the second category of Fig. 2, it is understood that there may be Ruo Ganshe
Count problem.For example, with reference to Fig. 3 A, support the next-generation 5G standard of second category user equipment (user equipment,
UE) it is configured to the receiving directivity wave from the base station (base station, BS) of next-generation 5G standard for supporting second category
Beam 301.However, directional antenna beam 302 may be blocked by the barrier of such as concrete structure under some environment.Separately
Outside, with reference to Fig. 3 B, since 5G BS has the coverage rate 303 of specific region, so when 5G UE is between the region of coverage rate
It will be it needs to be determined that from a cells beam to the handover mechanism of another cells beam when at boundary 304.
To solve the problems, such as example, related to mobility, it is proposed that the non-cell in the center UE (UE-centric non-cell)
System.Fig. 4 show honeycomb (cell centric cellular) system centered on cell with it is non-small centered on UE
Comparison between sound zone system.The method for meeting the demand of the superelevation traffic densities in 5G communication system can be used based on ultra dense
Collect the design of network (ultra-dense network, UDN).In the legacy systems of such as 3G and LTE network, cellular communication
It is center of housing estate cellular system.However, for 5G communication system, it will be wireless based on the non-cell centered on user equipment (UE)
The system of being electrically accessed is disposed.It can realize with the abstract concept that the UE of virtualization cellular concept is wirelessly electrically accessed and wirelessly be electrically accessed
The cutting of network (radio access network, RAN), its implementation are to tackle to move by separation entity cell and UE
Dynamic sex-related issues, and blocked via separation entity topological structure and service, and via heterogeneous nodes deployment is simplified to tackle
Related problem.
In 5G communication system, due to higher carrier frequencies, cell size will be likely to smaller.Caused by UE mobility
Switching can be efficiently solved via UDN.However, 5G network superelevation business load experienced and high density may force before to
Return network (fronthaul network) and entity separation, and cause between following control plane and data plane
It splits (C/U fractionation).Fig. 5 illustrates via the control plane in the 5G communication system for using virtual level concept and between user plane
Fractionation.This means that control plane (C plane) will be deployed only on virtual level, therefore data plane (U plane) will be deployed in
In physical layer.Therefore, physical layer data can decode within the physical layer and be forwarded to virtual level via forward direction return network.Through
The data of decoding be subsequently converted into MAC message with core network.This scheme, it is no longer necessary in identical virtual level
It reselects or switches for the cell of UE.This concept is by the center the UE virtual subdistrict with the virtual level that can be equivalent to Fig. 5
Embodiment is consistent.
Summary of the invention
Therefore, this disclosure relates in millimeter-wave communication system the beam tracking method of multiple cell group and use the method
User equipment and base station.
In one of exemplary embodiment, this disclosure relates to which the user of multiple cell group sets in a kind of millimeter-wave communication system
Standby used beam tracking method, and the method will be including but not limited to：Period first time be inscribed packet receiving contain with
Associated first reference signal sequence of first community wave beam and the second reference signal sequence associated with second community wave beam
More than first a reference signal sequences；Second measurement of measurement the first measurement comprising first community wave beam and second community wave beam
Beam quality；Measurement return is generated based on beam quality；And transmission measurement return.
In one of exemplary embodiment, this disclosure relates in a kind of millimeter-wave communication system multiple cell group base station institute
The beam tracking method used, and the method will include：Transmission is according to multiple time multiplex within period first time
The first reference signal sequence that the first TDM configuration of (time-division multiplexing, TDM) configuration generates, wherein
The first TDM configuration is unique for each cell in multiple cell group within the time cycle；In response to the first reference of transmission
Signal sequence receives measurement return from preferred cells beam；It is based in response to measurement return is received from preferred cells beam
In received UL signal execute cell quality measurement；And cell quality measurement is transferred to controller.
In one of exemplary embodiment, this disclosure relates to a kind of user equipment, the user equipment will include but unlimited
In：Transmitter；Receiver；And processor, it is couple to transmitter and receiver and is configured to perform the following operation：Through
Packet receiving is inscribed containing the first reference signal sequence associated with first community wave beam and with the in period first time by receiver
More than first a reference signal sequences of associated second reference signal sequence of two cells beams；Measurement includes first community wave beam
First measurement and second community wave beam second measurement beam quality；Measurement return is generated based on beam quality；And warp
It is returned by transmitter transmission measurement.
In one of exemplary embodiment, this disclosure relates to a kind of base station, the base station will be including but not limited to：Transmitting
Device；Receiver；And processor, it is couple to transmitter and receiver and is configured to perform the following operation：At first
Between the first TDM configuration that configure via transmitter transmission according to multiple time multiplex (TDM) in the period generate first with reference to letter
Number sequence, wherein the first TDM configuration is unique for each cell in multiple cell group within the time cycle；In response to passing
Defeated first reference signal sequence receives measurement return via receiver from preferred cells beam；It is returned in response to measurement is received
Cell quality measurement is executed based on UL signal received from preferred cells beam；And cell quality is surveyed via transmitter
Amount is transferred to controller.
In order to enable the preceding feature and advantage of the disclosure are easy to understand, the exemplary reality with attached drawing is described in detail below
Apply example.It should be understood that above-mentioned general description and it is described in detail below be all exemplary, and be desirable to provide to the sheet advocated
It is disclosed to be explained further.
However, it should be understood that present disclosure can and not contain all aspect and embodiment of the disclosure, therefore it is not intended to
It limits or constrains in any way.In addition, the disclosure will comprising those skilled in the art it is readily comprehensible improvement and
Modification.
For allow the disclosure features described above and advantage can be clearer and more comprehensible, special embodiment below, and cooperate institute's accompanying drawings
It is described in detail below.
Detailed description of the invention
Attached drawing offer is further understood from the disclosure, and attached drawing is incorporated in the present specification and constitutes this theory
A part of bright book.Schema illustrates embodiment of the disclosure, and together with embodiment for explaining the principles of this disclosure.
Fig. 1 is the schematic diagram of the feature of millimeter-wave communication system.
Fig. 2 is the schematic diagram of the new radio of 5G (new radio, NR) transport frame.
Fig. 3 A is the schematic diagram of 5G NR stand alone type communication system.
Fig. 3 B is the schematic diagram of 5G NR stand alone type communication system.
Fig. 4 is the comparison schematic diagram of the cellular system and the non-cell system centered on UE centered on cell.
Fig. 5 illustrates the control plane in the 5G communication system via the concept for using virtual level and tearing open between user plane
Point.
Fig. 6 is according to the concept between the tracking of comparison joint and individual trackings in an exemplary embodiment of the disclosure
Schematic diagram.
Fig. 7 is the schematic diagram according to the decision of the preferred wave beam in an exemplary embodiment of the disclosure.
Fig. 8 is to be made according to the more not reproducible use beam sequences in an exemplary embodiment of the disclosure with repeatable
With the schematic diagram of the concept between sequence.
Fig. 9 A illustrates the beam sequences that system is reused for sequence in the exemplary embodiment according to the disclosure
The concept of ambiguity.
Fig. 9 B illustrates the reality of the beam sequences ambiguity in the exemplary embodiment according to the disclosure with J=Q=8
Example.
Figure 10 illustrates the example for staggeredly sweeping wave beam in the exemplary embodiment according to the disclosure.
Figure 11 illustrates another example for staggeredly sweeping wave beam in the exemplary embodiment according to the disclosure.
Figure 12 illustrates the configuration of the beam sequences ID image in the exemplary embodiment according to the disclosure based on TDM.
Figure 13 illustrates in the exemplary embodiment according to the disclosure for the wave beam of the alignment of main view axis and J=Q=8 between BS
The example of sequence.
Figure 14 illustrates in the exemplary embodiment according to the disclosure for the wave of main view axis non-alignment and J=Q=8 between BS
The example of Shu Xulie.
Figure 15 illustrates in the exemplary embodiment according to the disclosure for main view axis alignment between BS but wave beam pan sequence
The example of direction difference and the beam sequences of J=Q=8.
Figure 16 illustrate in the exemplary embodiment according to the disclosure for main view axis non-alignment between BS but wave beam pan it is suitable
Another example of sequence direction difference and the beam sequences of J=Q=8.
Figure 17 illustrates axis aligned for main view between J=24 >=Q=8 and BS in the exemplary embodiment according to the disclosure
The example of beam sequences.
Figure 18 illustrates the example for transmitting multiple BQM-RS in the exemplary embodiment according to the disclosure from cell.
Figure 19 illustrates the BQM-RS distribution based on BTS in the exemplary embodiment according to the disclosure.
The example that Figure 20 illustrates the BQM-RS distribution based on BSS in the exemplary embodiment according to the disclosure.
Figure 21 illustrates the reality of the BQM-RS distribution based on distributed BTS in the exemplary embodiment according to the disclosure
Example.
The example that Figure 22 illustrates the beam tracking in the exemplary embodiment according to the disclosure.
Figure 23 illustrates the SNR table in the exemplary embodiment according to the disclosure.
Figure 24 illustrates the measurement return of the SNR in the exemplary embodiment according to the disclosure.
Figure 25 illustrates the SNR report of slave UE to the BS in the exemplary embodiment according to the disclosure.
Figure 26 illustrates that the RAP via UE in the exemplary embodiment according to the disclosure is transmitted.
Figure 27 A and Figure 27 B illustrate the multiplicity based on noncompetitive RAP in the exemplary embodiment according to the disclosure
Property.
Figure 28 illustrates the application of the SNR table in the exemplary embodiment according to the disclosure.
Figure 29 A is the functional block diagram of the UE in the exemplary embodiment according to the disclosure.
Figure 29 B is the functional block diagram of the BS in the exemplary embodiment according to the disclosure.
Figure 30 A illustrate the angle of the UE from the exemplary embodiment according to the disclosure in millimeter-wave communication system
Used in multiple cell group the step of beam tracking method.
Figure 30 B illustrate the angle of the BS from the exemplary embodiment according to the disclosure in millimeter-wave communication system
Used in multiple cell group the step of beam tracking method.
【Symbol description】
101：Microwave frequency antenna
102：Single millimeter wave unifrequency antenna
103：FoV coverage rate
104：Wave beam
301,302：Directional antenna beam
303：Coverage rate
304：Boundary
1301：Overlapping area
1401,1402,1503,1504,1603,1701：Area
1501：Clockwise
1502：Counterclockwise
1601：Clockwise
1602：Counterclockwise
1901：Distributed allocation
1902：Localized allocation
2001,2101：Beam quality measures reference signal
2002,2102：Cell 0
2003,2103：Cell 1
2004：UE wave beam 1
2104：Best UE wave beam
2105：All four UE wave beams
2301：Preferable cell beam index
2302：It is preferred that DL cell sweeps wave beam periodic key
2311：The periodic key of DL cell pan wave beam
2312：The beam index of cell
2313：The beam index of UE
2401：DL cell sweeps the wave beam period 1
2402：UL cell sweeps the wave beam period 1
2901,2911,2916：Processor
2902,2912：Millimeter-wave transceiver
2903,2913：Antenna array
2904：Unlicensed frequency band transceiver
2905,2915：Store media
2914：Centimeter wave transceiver
BF：Beam forming
BS：Base station
CCH：Control channel
DL：Downlink
ID：Identifier
UL：Uplink
FoV：The visual field
PUCCH：Entity uplink control channel
PUSCH：Entity Uplink Shared Channel
PRACH：Entity random access channel
RACH：Random access channel
RAP：Random access lead code
RAT：Radio access technologies
RAN：Radio access network
SCH：Shared channel
SNR：Signal noise ratio
TDM：Time multiplex
UE：User's equipment
mmWave：Millimeter wave
S301~S304, S311~S314：Step
Specific embodiment
Now with detailed reference to the present example embodiment of the disclosure, illustrate the exemplary embodiment in the accompanying drawings
Example.In the conceived case, identical reference label is in schema and description for referring to same or similar part.
This disclosure relates in millimeter-wave communication system multiple cell group beam tracking method and relevant device, it is definite come
It says, the disclosure, which is provided, tracks (multi-beam for the multi-beam and multiple cell of the equipment in millimeter (millimeter wave) communication system
And multi-cell tracking, MBMCT) method.In the disclosure, each UE can be based on downlink
(downlink, DL) signal come measure or detect cell pan wave beam quality；And BS can be based on the uplink reported by UE
Road (uplink, UL) signal and from preferred cell pan wave beam in measure or detection cell quality.Therefore, cell sweeps wave
Beam quality and cell quality are discriminably measured or are tracked.The individual cell pan wave beam of base station may carry (with reference to letter
Number) sequence and each sequence will correspond to an identifier (identifier, ID).Due to base station generate sequence it is identical
Set can also be used by other base stations in identical millimeter-wave systems, so the phase of single or multiple beam sequences ID (or sequence)
It can be reused by one or more cells other in millimeter-wave systems with set.
In addition, base station can (repeatedly) transmission beam mass measurement reference signal (beam quality measurement
Reference signal, BQM-RS) set, wherein each BQM-RS has with remaining BQM-RS for transmitting via base station not
Same beam sequences ID.Beam sequences ID derived from BQM-RS can be carried by the pan wave beam of cell and is staggered.Companion
With one BQM-RS of every cell is transmitted every time, can be passed simultaneously from different community by the BQM-RS that cell pan wave beam carries
It is defeated.Also, each BQM-RS will be associated from different beam sequences ID.For example, the first reference signal sequence can spread out
It is born from the received BQM-RS from first community wave beam, the second reference signal sequence can be derived from and connect from second community wave beam
The 2nd BQM-RS received.First wave beam serial ID can be derived from the first reference signal sequence, and the second beam sequences ID can spread out
It is born from the second reference signal sequence.
The beam quality measurement statistical data for being not limited to signal noise ratio (signal-to-noise ratio, SNR) can be with
It is measured based on BQM-RS by UE, with the wave beam of wave beam and UE for tracking cell.At preferred report time via
Control channel/shared channel (control/shared in uplink (UL) beam forming (beamforming, BF) header
Channel, CCH/SCH), and above-mentioned preferred report time corresponds in downlink (DL) transmission with maximum measurement SNR
Reception pan wave beam used in report time, with specific cell pan wave beam associated beam quality measurement and/or excellent
The beam sequences ID of choosing can be reported by UE.Random access lead code (random with the UE unique sequence code ID used
Access preamble, RAP) should be some BS (and/or network) near UE known, and can it is above-mentioned preferably
The UL time be in UL BF header the channel random access (random access, RA) (random access channel,
RACH it is transmitted on).The SNR shape quality of cell can measure at BS on CCH RS/SCH RS/RACH, and best cell can
It is determined with the SNR measurement based on cell via controller.
The tracking of description joint is compared between individual trackings first.Compare multiple wave beams of description and more shown in Fig. 6
The tracking of a cell can be based on joint tracking mechanism or individual tracking mechanisms.Joint is tracked, in step s 611, wave beam
Quality and the quality of cell will be measured based on DL signal provided by BS via UE, or in step S612, the matter of wave beam
The quality of amount and cell will also be measured based on UL signal provided by UE via BS.This means that the quality and cell of wave beam
Quality jointly will be measured or be tracked via UE and/or BS.On the other hand for tracking individually, in step s 601, from BS
The cell pan beam quality of transmission can be measured or be tracked via UE via DL signal provided by BS is used, and in step
In rapid S602, the quality of cell can be via UL signal measurement or tracking provided by UE.It is worth noting that, the disclosure is main
It is related to but is not limited to individual follow-up mechanisms as described above.It will include less relative to the advantages of individual trackings for combining tracking
Computation complexity, compared with short cycle of measurement and less RS/ signaling overheads.And it is all above-mentioned to should be noted that the disclosure is not limited to possess
The necessity of advantage.
Under individual tracking mechanisms, as shown in Figure 7, the wave beam decision about preferred UE can determine via UE itself
It is fixed, and such decision can be it is transparent to BS or controller.It can be about preferred cells beam decision via UE or warp
It is determined by controller.Preferred cell can be via controller decision.Term " controller " refers to class in the disclosure
It is similar to be typically connected to radio network controller (the radio network of multiple base stations and the multiple base stations of control
Controller, RNC) concept.
Fig. 8 illustrate it is not reproducible using beam sequences compared between reusable sequence.For positioning of beam
Beam sequences identifier (ID) can be non-duplicate use or reuse for multiple cells as shown in Figure 8.It should be worth
It obtains it is noted that beam sequences ID as described in this disclosure is not to be generally used for carrying out rope to each individual beam of base station
The wave beam ID or beam index drawn.System not re-usable for sequence, multiple set of Q beam sequences ID or sequence
Or different sets will be used for multiple cells.It is assumed that there are Nd set (also that is, Nd cell), then QNd measurement will be needed
And detection.The available optimum performance of this measure, but slower measurement/report and higher RS/ signaling overheads will be induced.For sequence
Single (identical) set of reusable system, J (Q≤J≤QNd) beam sequences ID can be repeated for multiple cells
It uses.Via using J measurement and detection, via sacrificing the decline of (very small amount of) performance, measurement and report can be compared with
Fastly, the needs of RS/ signaling overheads can reduce.
One of according to an exemplary embodiment of the present disclosure, Fig. 9 A illustrates to reuse the beam sequences of system not for sequence
The concept of definition.A potential problems for being associated with the reusable system of sequence are, as shown in Figure 9 A, if from not
Received simultaneously with cell but with two of same beam serial ID or greater than two beam sequences via UE, then there may be
Beam sequences ID ambiguity.Beam sequences ID ambiguity is as in signal rp, q (n) received by two cells
Non-coherent combination cause (that is, (h1,2, i+h1,2, j) s2 (n)), wherein hp, q, i are q-th of wave beams from i-th of cell
To the channel gain of p-th of UE wave beam, and sq (n) is Zadoff-Chu (ZC) sequence with beam sequences ID (that is, root) q
Column.The inaccurate measurement that beam sequences ID ambiguity will then cause on beam sequences ID.
Fig. 9 B illustrates the beam sequences ambiguity with J=Q=8 in the exemplary embodiment according to the disclosure
Example.It can be seen that BS 0 and BS 1 has the configuration of same beam sequence from Fig. 9 B, for example, have 8 wave beam sequences
Arrange the configuration 0 of ID.Due to receiving the first community pan wave beam with beam sequences ID=2 from BS 0 and being received from BS 1
Second community with beam sequences ID=2 sweeps wave beam, so any UE being located in region 901 may undergo beam sequences
ID ambiguity.
In order to avoid beam sequences ID ambiguity, alternating beam transmission structure can be used.Figure 10 illustrates according to this public affairs
The example for staggeredly sweeping wave beam in the exemplary embodiment opened.It, will be in DL for the beam quality of effectively measuring cell
Beam quality measuring reference signals (beam quality measurement reference is used in beam forming (BF) header
Signal, BQM-RS) set.Via the BQM-RS received in the DL signal from BS, UE can execute wave beam based on BQM-RS
Mass measurement.Therefore, in order to avoid beam sequences ID ambiguity problem, for the BQM-RS's as entrained by the wave beam of cell
Beam sequences ID should be it is staggered, to avoid beam sequences ID ambiguity problem.It, can be with for this exemplary embodiment
Anticipate the multiple BQM-RS transmitted from multiple cells.From the example of Figure 10, it can be seen that BQM-RS is simultaneously from least two
It is transmitted in a different community.With the first wave beam serial ID (its specific Z C sequence sq (n) with every every cell of transmission) and pass through
The first BQM-RS as entrained by the first community pan wave beam of cell I will be received by UE, to be used for beam selection or wave beam
Tracking.It is carried with the second beam sequences ID (it is with another ZC sequence) and via the second community of cell j pan wave beam
2nd BQM-RS can also be received by UE, to be used for beam selection or beam tracking.By this method, it can be seen from fig. 10 that
For example, at time index t=1, the beam sequences ID of the cell pan wave beam from cell i is 1, and comes from cell
The beam sequences ID of the cell pan wave beam of j is 0.Similarly, as shown in Figure 11, at time index t=2, cell I is come from
Cell pan wave beam beam sequences ID be 2, and from the cell of cell j pan wave beam beam sequences ID be 1.Cause
This, can be to avoid beam sequences ID ambiguity problem.
In response to receiving BQM-RS, multiple beam quality measurements are can be performed in UE.For example, in response to the first BQM- of acquisition
The first beam quality measurement of first community pan wave beam can be performed in RS, UE.Similarly, in response to acquisition the 2nd BQM-RS, UE
The second beam quality measurement of executable second community pan wave beam.UE can also receive the 3rd BQM-RS, the 4th BQM-RS etc.
Deng, and correspondingly execute beam quality measurement.UE can just have highest signal noise ratio (signal to noise ratio,
SNR) the considerations of angle and preferred beam sequences ID is determined from the measurement of multiple beam qualities, and then select preferred UE
Wave beam, to have corresponding to highest beam quality (for example, highest SNR as measured by via UE) in cells beam measures
Cell sweeps the multiple beam quality measurements of transmission (all) at the time of wave beam and/or preferred beam sequences ID to preferably
Cell sweeps wave beam.In response to the return for receiving UE from preferred cell pan wave beam, cell can be held based on the return of UE
Row cell quality measures and the result that cell quality measures is transferred to controller.Similarly, another cell can also be based on
UE's returns to execute cell quality measurement and the result that cell quality measures is transferred to controller.Controller then can base
Measuring in the cell quality received determines at least one preferred cell to serve UE.
Reference signal sequence is generated based on a configuration in time index and multiple configurations via each cell is configured
It arranges and then transmission of reference signals sequence, beam sequences ID ambiguity problem can be avoided by.Figure 12 illustrates according to the disclosure
The configuration of the beam sequences ID image based on TDM of one of exemplary embodiment.The information of Figure 12 can store as any BS or
Look-up table in UE, and such table can be referred to as the beam sequences ID allocation list based on TDM.In the example of Figure 12, know
Other capacity is assumed that the quantity of the wave beam of eight and cell is assumed four, therefore J=8 and Q=4；However, the disclosure is unlimited
In these specific quantities.Configuration in the time cycle of every cell is unique for the base station in multiple cell group.Citing comes
It says, at time index t=2 1201, up to eight different configurations will be present, therefore eight different sequences are detected simultaneously by UE
It is distinguished among eight cells.Therefore, in multiple cell group, since the beam sequences ID configuration pin based on TDM is to every
A cell is unique, so receiving from two different communities without UE, there are two BS of same beam serial ID to sweep
Wave beam.It can be for the beam sequences ID configuration in each cell based on specific TDM via controller determination.
In general, for each cell, beam sequences IDIt can have time index t (0≤t≤Q-1)
Mapped specific, referred to as based on TDM beam sequences ID mapping.For example, if Q wave beam has identification capacity J's
It is used at each cell of system, thenIt can produce as follows：
Wherein nConfig be image configuration index, can be it is dispatching semi-continuously, dynamically dispatching or via
Controller configuration.Most J BQM-RS will be transmitted from multiple cells in multiple cell group, because each cell will make
The different beams serial ID corresponding to each time index, and multiple unique beam sequences ID can be received simultaneously via UE
To execute MBMCT.Therefore, via cell pan multi-beam transmission BQM-RS can multiple cells in multiple cell group it
Middle reuse.Figure 13 to Figure 17 provides the various examples for avoiding beam sequences ID ambiguity.
Figure 13 illustrates the example for the beam sequences of the alignment of main view axis and J=Q=8 between BS, and each configuration will have
The time cycle that circulation is 8 per (wave beam), and each time cycle in a circulation corresponds to some time index l
=0~7.In this example, BS 0 has been already configured with the beam sequences ID based on TDM and the configuration 0 that configures, and BS 1 has been configured
There is a configuration 1, therefore the UE at the l=2 in overlapping area 1301 can receive the first pan wave that from BS 0 and beam sequences ID is 2
Beam and from BS 1 and the second pan wave beam that beam sequences ID is 3.By this method, wave beam is not present in overlapping area 1301
Serial ID ambiguity.
Figure 14 illustrates the example for the beam sequences of main view axis non-alignment and J=Q=8 between BS.In this example, 0 BS
The configuration 0 for having been already configured with the beam sequences ID based on TDM and configuring, BS 1 have been already configured with configuration 1.At l=2, area
UE in 1401 can receive the first pan wave beam from BS 0 and beam sequences ID=2 and come from BS 1 and beam sequences ID=
3 the second pan wave beam.By this method, beam sequences ID ambiguity is not present in area 1401.For area 1402, UE will be received
The first pan wave beam from BS 0 and beam sequences ID=2 and the second pan wave from BS 1 and beam sequences ID=2
Beam.However, the beam sequences ID=2 from BS 0 is received in time index l=2, the beam sequences ID from BS 1
=2 are to be received in time index l=1, therefore beam sequences ID ambiguity is not present in area 1402.
Figure 15 illustrates to have main view axis alignment between BS but wave beam pan sequence direction is different and the beam sequences of J=Q=8
Example.In this example, BS 0 has been already configured with the configuration 0 of the configuration of the beam sequences ID based on TDM, and BS 1, which has been already configured with, to be matched
Set 1.BS 0 1501 can sweep up to 8 pan wave beams in a clockwise direction, and BS 1 can 1502 pan in a counterclockwise direction
Up to 8 pan wave beams.In area 1503, UE by receive when the time l=2 from BS 0 and beam sequences ID=2 first
Wave beam is swept, and UE will receive the second pan wave beam from BS 1 and beam sequences ID=6, therefore area when the time l=5
Beam sequences ID ambiguity is not present in 1503.UE receives the beam sequences ID=transmitted from BS 1 when time index l=2
In pan footprint of a beam 1504 corresponding to 3, any beam sequences ID ambiguity is also not present.This is because in time rope
Draw at l=2, there is no from BS 0 and corresponding to any pan wave beam of beam sequences ID 3.And above-mentioned beam sequences ID 3
Be identical to also be at time index l=2 transmitted from BS 1 pan wave beam beam sequences ID.
Figure 16 illustrates the beam sequences for main view axis non-alignment between BS but wave beam pan sequence direction difference and J=Q=8
Another example.In this example, BS 0 has been already configured with the beam sequences ID based on TDM and the configuration 0 that configures, and with suitable
The transmission pan wave beam of clockwise 1601.BS 1 has been already configured with 1 and in a counterclockwise direction 1602 transmission pan wave beam of configuration.?
When time index l=2, the UE in area 1603 can receive the first pan wave beam from BS 0 and beam sequences ID=2 and come from
The second pan wave beam of BS 1 and beam sequences ID=3.By this method, beam sequences ID ambiguity is not present in area 1603.
Wave beam can recognize that capacity J can be greater than the pan wave beam number of the transmitted maximum quantity of each cell.Figure 17 explanation
Example for the axis aligned beam sequences of main view between J=24 >=Q=8 and BS.In this example, each BS (BS0, BS1) tool
There are 3 cells, Q=8 unique different beams serial IDs is used in each cell, and this 3 minizones are not each other using yet
Same beam sequences ID.In the case, therefore each BS will have 24 different beams serial IDs altogether.But it is noticeable
It is that the set for the beam sequences ID in BS 0 is by identical as the set for the beam sequences ID being used in BS 1 (also that is, can weigh
It is multiple to use).Since UE will not receive the pan wave beam of two cells with same beam serial ID, institute from two difference BS
Will not also there be beam sequences ID ambiguity with this example.For example, in area 1701, at time index l=2, UE
The second community of the first community pan wave beam and beam sequences ID=2 that receive wave beam serial ID=18 is swept into wave beam.Due to
The beam sequences ID of two cells pan wave beam from two difference BS is different, so will be not present beam sequences ID not
Definition.The available slightly preferable performance of this specific embodiment of Figure 17 but opposite it need to pay higher RS/ signaling overheads
With the cost of measurement complexity.
Cell maximum quantity in multiple cell group can recognize capacity J by wave beam to determine.Figure 18 illustrates from more
The example of multiple BQM-RS is transmitted in cell in cell group.Due to the J=8 in the example of Figure 18, will be present herein via
Most J BQM-RS of multiple cell transmissions, wherein each cell is in the transmitted different beams serial ID of each time index.Institute
These BQM-RS having can be received via the UE for executing MBMCT mechanism simultaneously.
In order to realize wave beam detection or tracking as described above, the frame knot comprising BQM-RS is shown in FIG. 19
Structure, Figure 19 illustrate that the BQM-RS based on beam tracking signal (beam tracking signal, BTS) is distributed.Instead of BTS,
Beam search signal (beam search signal, BSS) is also used as the substitution of BQM-RS.The use of BSS can have compared with
Low RS expense, but longer measurement period/time is needed, and the relatively slow wave being not enough to for quickly changing channel may be presented
Beam trace ability.The resource allocation of BQM-RS based on BTS can measure resource (beam in the beam quality in DL BF header
Quality measurement resource, BQMR) in.The distribution of BQM-RS can be distributed allocation 1901 or localization
Distribution 1902.As can be seen from Figure 19 the BQMR of the BQM-RS comprising 1901 type of distributed allocation is in a distributed manner alternately
It is placed in DL BF header and the same group is collectively formed with other signals.And include 1902 type of localized allocation
The BQMR of BQM-RS is then placed in DL BF header together in a continuous manner.In other words, distributed allocation 1901 type
BQMR is not continuous each other；And the BQMR of 1902 type of localized allocation is then continuous each other.
For the embodiment of Figure 19, the Q pan wave beam of transmission from the base station from cell is will be present in this.Q pan wave
Beam is defined and is sequentially transmitted on M millimeter wqve radio frame in which can be being determined property, and each BF of radio frame
Header will be assigned N number of pan wave beam, wherein N=Q/M.The distribution of Q wave beam can be with every M millimeter wqve radio frame weight
It is multiple, therefore indexing is that N=Q/M wave beam of mN~(m+1) N-1 can use in m-th of millimeter wave chronomere.For this
Exemplary embodiment, the end UE will use P pan wave beam.In each BQMR of the DL BF header of cell pan wave beam, most preferably
The index of UE wave beam is kopt, or index is that a pan UE wave beam of kL~(k+1) L-1 L (1≤L≤P) can be used in kth
BQI-RS, 0≤k≤K-1 are received in a millimeter wave chronomere, wherein K=MP/L is the UE pan wave beam period.UE can be based on connecing
The signal quality of the BQM-RS measurement cell pan wave beam received, and UE then can voluntarily select preferred UE pan wave beam,
To sweep wave beam and time cycle for institute via suitable cell according to the beam sequences ID allocation list based on TDM as the aforementioned
The signal quality of measurement is transferred to the BS corresponding to cell pan wave beam.
It is shown in FIG. 20 for the example of Nd=2, J=Q=4 and P=4 and the BQM-RS based on BSS further to retouch
State the principle of the operation of BQM-RS.Wherein, Nd is the quantity of the cell in multiple cell group, and J is used in BS wave beam group
The identification capacity or maximum quantity of beam sequences ID, Q is the number of beams of cell, and P is the number of beams of UE.Institute in Figure 20
Show that the DL BF header of frame will sweep the wave beam period comprising at least four DL, that is, DL sweeps the wave beam period 0, DL sweeps the wave beam period
1, DL sweeps the wave beam period 2, DL sweeps the wave beam period 3.Each of four BQM-RS 2001 will with can be derived from BQM-
Each different beams serial ID is associated in RS 2001.For example, 0~ID of ID 3 is via manipulation to cell 0 2002
With the pan multi-beam transmission of four cells of four different directions of cell 1 2003, but each cell (0,1) will be in office
What, different ID were transmitted at place in period given time.In response to receiving BQM-RS 2001, UE will execute beam quality measurement, and pass through
Carry out the result of transmission beam mass measurement via the best UE wave beam that UE is determined as UE wave beam 1 2004 in this example.
It is shown in FIG. 21 for Nd=2, J=Q=4 and P=4 and the BQM-RS example based on distributed BTS.This reality
The frame structure of example will be at least including but not limited to a DL BF header and a UL BF header.DL BF header will include unlimited
It is swept the wave beam period in four DL, DL sweeps wave beam period 0, DL pan wave beam period 1, DL pan wave beam period 2 and DL pan
The wave beam period 3.Each of four BQM-RS 2101 will be associated with different beams serial ID.For example, 0~ID of ID
3 sweep multi-beam transmissions via four differences of four different directions of both manipulation to cell 0 2102 and cell 1 2103.So
And in this example, within each DL pan wave beam period, UE can be via best UE wave beam 2104 to carry out beam search signal
(BSS), broadcast singal (Broadcast Signal, BCS) and cell search signal (Cell Search Beam, CSS) connect
It receives, and via using the full pan of all four UE wave beams 2105 to carry out the reception of BTS.From the example of Figure 20 and Figure 21,
It can be seen that all combined times of the pan wave beam of pan wave beam and UE for measuring cell, for based on BSS's
BQM-RS is 4 millimeter wave chronomeres, and is 1 millimeter wave chronomere for the BQM-RS based on BTS.
The example how to carry out beam tracking is shown in FIG. 22.In response to receiving the UE of multiple BQM-RS, for example, right
The cells beam of ID 2 of the Ying Yu from cell i and the BQM-RS of the cells beam corresponding to the ID1 from cell j, UE will be surveyed
The signal noise ratio (SNR) for measuring wave beam simultaneously records in this type of information to SNR list or table, and above-mentioned SNR list or table can be with
Storage and update among the storage media of UE.Measurement based on BQM-RS, UE can determine its preferred wave beam and cell
Preferred wave beam.
Above-mentioned SNR table is shown in FIG. 23.Although beam tracking can be via the SNR for executing wave beam to BQM-RS at UE
Measurement, but other measurement standards also can be used, for example, signal-to-interference ratio (signal-to-interference
Ratio, SIR), signal to interference-to-noise ratio (signal-to-interference-plus-noise ratio, SINR),
Received signal strength indicator symbol (received signal strength indicator, RSSI), Reference Signal Received Power
(reference signal received power, RSRP), Reference Signal Received Quality (reference signal
Received quality, RSRQ) etc..The SNR table of each of the combination of wave beam of wave beam and UE for cell can
Being calculated based on time-domain matched filters (matched-filter, MF) output SNR.SNR table may include for every
The beam index 2313 of the periodic key 2311 of a DL cell pan wave beam, the beam index of cell 2312 and UE.SNR table
Content can be transferred to BS as measurement from UE using a part or whole part and return, the measurement, which is returned, may include preferred cell wave
Beam index and the measurement of at least two beam qualities.Since UE has received cell pan wave beam from each cell, so UE will
Measurement is executed to fill or update table and determine based on maximum SNR value (for example, 2304) or other measured indexs excellent
The UE beam index of choosing.From SNR table, UE can be returned to one or more BS, this return is set forth below including being not limited to
One or more：Preferable cell beam index (for example, 2301) and preferred DL cell pan wave beam periodic key (for example,
2302), or the relatively small subset of preferably full line corresponding to UE beam index is closed.It is worth noting that, can be in beam tracking in this
In only obtain beam quality information rather than the information of cell quality.It may need to calculate in SNR table as shown in Figure 23
(fixed quantity) J2P SNR numerical value altogether.It may be higher computation complexity, but network can be not required to additional signaling
Or include configuration.
The exemplary embodiment of the opportunity point of SNR measurement return is shown in FIG. 24.For this exemplary embodiment, BS
Or controller will be received simply from cell pan wave beam and be returned by the measurement that UE is returned, without which UE pan wave known
Beam is preferred or optimal, because it is preferred that or optimal UE pan wave beam is by depending on UE voluntarily decision, being not necessary to allow BS or control
Device processed knows.Measurement return comprising SNR (or other signals mass measurement pointer) can be at preferred report time by UE
To determine and be reported in UL.Measurement return can be passed via preferred UE wave beam or via current UE wave beam
It is defeated, and measure and return and can be received from preferred cells beam or current cells beam.As an example it is assumed that determining
(correspond to ID 1) has maximum DL to DL cell pan wave beam used in during the DL cell pan wave beam period 1 2401
SNR is measured, and it is (right using the cell pan wave beam that there is maximum DL SNR to measure that UE will need to take turns to during uplink
Should be to ID 1) received when during corresponding UL cell pan wave beam period 1 2402 (that is, when so-called preferred report
Between) at come transmission measurement return.Such relationship can be defined by the beam sequences ID mapping table based on TDM of Figure 12.Excellent
The report time of choosing, the information from SNR table and the preferred beam sequences ID corresponding to cell pan wave beam can be reported via UE
It accuses to one or more BS.SNR or preferred beam sequences ID corresponding to cell pan wave beam can be preferred via using
Entity uplink control channel/entity Uplink Shared Channel (physical uplink of the pan wave beam of UE in BF header
Control channel/physical uplink shared channel, PUCCH/PUSCH) it is returned.Preferred report
Accusing the time can be currently used report time or uses corresponding to pan wave beam is received by the cell with DL maximum measurement SNR
The UL time, as shown in Figure 24.
Figure 25 shows such reality of the SNR return in the multiple cell group for having millimetre-wave attenuator network from UE to BS
Example.Preferred time or predetermined time cycle can determine via UE.In the preferred or predetermined time cycle
Place, via the pan wave beam of the preferred UE pan wave beam and cell that use UE to be determined, the SNR measurement return of cells beam will be through
Service BS is transferred to by UE and/or is transferred to neighbouring BS.Preferred UE pan wave beam can be currently used UE wave beam or SNR
There is the UE wave beam of maximum measurement SNR in table.Then preferred cell can be based on by UE via controller in PUCCH/PUSCH
It is middle to be returned received quality measurement and determined.
Some BS near via UE can be by the random access lead code that UE is used or controller is known.Figure 26
It shows by the example of UE transmission RAP.UE can transmit RAP (for example, S2601) via random access channel (RACH).RAP can be with
Via using preferred UE pan wave beam to transmit on the RACH of BF header, the preferred UE pan wave beam, which can be, currently to be made
UE pan wave beam can be the UE pan wave beam with maximum S/N R in SNR table.RAP can be via in multiple cells
Cell pan wave beam received in the preferred or predetermined time cycle.
When cell receives PUCCH RS/PUSCH RS and/or RACH from the UL signal of UE, cell can be based on being connect
PUCCH the RS/PUSCH RS and/or RAP received executes SNR measurement.Uplink (UL) in beam forming (BF) header
In the preferred time cycle as defined in above-mentioned mapping table of part, for PUCCH RS/ received by each in cell
The SNR of PUSCH RS and/or RAP are measured, and can execute completion by multiple BS.The cell SNR result measured at BS can
For transmission to controller, the controller can then will determine one by the cell SNR result for being compared to be measured at BS
Or multiple preferred cells and serve UE.BS can also be with the SNR table of continuous updating cell to carry out such comparison.
Above-mentioned RAP can be the RAP based on non-competing formula.In order to promote the diversity of the RAP based on non-competing formula,
Show the distribution in frequency domain based on sub-band in Figure 27 A, and can be considered shown in Figure 27 B in time domain based on week
The transmission of phase property.Accoding to exemplary embodiment, the RAP compared with the short transmission period can be used for the UE of relatively high mobility, and compared with long pass
The RAP in defeated period can be used for compared with Hypomobility UE.
Figure 28 illustrates the cell SNR table in the exemplary embodiment according to the disclosure.Accoding to exemplary embodiment, may
Need to calculate fixed quantity with total Nd SNR.The SNR of cell can be via on PUCCH RS/PUSCH RS and/or RAP
The cell SNR measured, such SNR only can know BS and controller.For example, such as the institute in the 2801 of Figure 28
Show, is each in 0,1,2 and 3 cell for corresponding to index during DL cell pan wave beam periodic key is 1
It is a, all need calculate correspond to the cell PUCCH RS, RUSCH RS or RAP SNR and by the SNR be input into table with
In recording and compare.
Figure 29 A is the functional block diagram of the UE in the exemplary embodiment according to the disclosure.UE may include but unlimited
In the processor 2901,2902 transceiver of millimeter wave, the band transceiver 2904 of unauthorized and the day that are couple to storage media 2905
Line number group 2903.Storage media 2905, which provide, temporarily to be stored or permanently stores, for example, the TDM image of the SNR table of Figure 23, Figure 12
Table and other related datas.2902 transceiver of millimeter wave includes to be connected to one or more transmitters of antenna array 2903 and connect
Device is received with launching beam shaped signal.Unlicensed frequency band transceiver 2904 may include one or more transceivers in example
Such as Wi-Fi, bluetooth NFC unlicensed spectrum in communicate.Processor 2901 may include one or more hardware handles lists
Member, for example, processor, controller or discrete integrated circuit, with control 2902 transceiver of millimeter wave with emit and receive wave beam at
Shape signal and execution function relevant to above-mentioned beam tracking method and its associated exemplary embodiment and example.
Term " user equipment " (user equipment, UE) in the disclosure can be such as movement station, advanced mobile
It stands (advanced mobile station, AMS), server, client, desktop computer, laptop computer, network meter
Calculation machine, work station, personal digital assistant (personal digital assistant, PDA), tablet personal computer
(tablet personal computer, PC), scanner, telephone device, pager, camera, TV, handheld video game
Equipment, music apparatus, wireless sensor etc..In some applications, UE can be in such as bus, train, aircraft, ship
Only, the fixed computer device operated in the mobile environment such as automobile.
Figure 29 B is the functional block diagram of the BS in the exemplary embodiment according to the disclosure.BS may include but unlimited
In the processor 2911,2912 transceiver of millimeter wave, centimeter wave transceiver 2914 and the antenna array that are couple to storage media 2915
2913.Storage media 2915 provide and temporarily store or permanently store, for example, the TDM mapping table of the SNR table of Figure 23, Figure 12 and its
Its related data.2912 transceiver of millimeter wave include be connected to one or more transmitters and the receiver of antenna array 2913 with
Launching beam shaped signal.Processor 2911 may include one or more hardware processing elements, for example, processor, controller
Or discrete integrated circuit, it controls 2912 Transceiver Transmit of millimeter wave and reception beam-formed signal and execution is chased after with above-mentioned wave beam
Track method and its associated exemplary embodiment and the relevant function of example.
Term BS in the disclosure can be macrocell BS, Microcell BS, picocell BS, Femto cell BS,
" eNodeB " (eNB), Node-B, advanced BS (advanced BS, ABS), base transceiver system (base transceiver
System, BTS), access point, household BS, relay station, scatterer (scatterer), transponder, intermediate node, intermediary
(intermediary), the variant or Advanced Edition of satellite-based communication BS etc..
Figure 30 A illustrates from the exemplary embodiment according to the disclosure based on the angle of UE in millimeter-wave communication system
Used in multiple cell group the step of beam tracking method.In step S301, packet receiving will be inscribed in period first time in UE
Containing the first reference signal sequence associated with first community wave beam and the second reference signal associated with second community wave beam
A reference signal sequence more than the first of sequence.In step s 302, UE will measurement comprising first community wave beam first measurement and
The beam quality of second measurement of second community wave beam.In step S303, UE will generate measurement return based on beam quality.?
In step S304, UE returns transmission measurement.
Figure 30 B illustrates from the exemplary embodiment according to the disclosure based on the angle of BS in millimeter-wave communication system
Used in multiple cell group the step of beam tracking method.In step S311, BS will transmit root within period first time
The first reference generated according to the first time multiplex (time-division multiplexing, TDM) configuration of multiple TDM configuration
Signal sequence, wherein the first TDM configuration is unique for each cell in multiple cell group within the time cycle.In step
In S312, BS will be responsive to the first reference signal sequence of transmission and receive measurement from preferred cells beam or current area wave beam
Return.In step S313, BS will execute cell quality measurement based on measurement return.In step S314, BS is by cell quality
Measurement is transferred to controller.Therefore, being configured to the change that the 2nd TDM is configured from the first TDM can be determined via controller.
In view of foregoing description, the disclosure is suitable in wireless communication system and can calculate complexity can reduce
Degree, reduce signaling overheads and reduce needed for measurement period mode track via beam quality received by UE and via
Cell quality measured by BS.
Component used in the detailed description of the disclosed embodiments of the application, movement or instruction should not be construed as to this
It is absolute key or necessary for open, unless explicitly described.Moreover, as used herein, indefinite article " one
(a) " and each of " one (an) " may include more than one project.If it is desired to only one project is indicated, then can make
With term " single " or similar language.In addition, as used herein, in the list of multiple projects and/or multiple project categories
Before term " any one of " wish comprising the project and/or project category individually or combine other projects and/or
Other project categories " any one of ", " in any combination ", " in any number of " and/or " in multiple any groups
It closes ".In addition, as used herein, term " set " wishes the project comprising any amount, it include zero.In addition, as herein
It is used, it includes zero that term " quantity ", which wishes to include any quantity,.
It will be apparent to those skilled in the art that be without departing from the scope or spirit of the present disclosure, can
To the structure of the disclosed embodiments, various modifications and variations can be made.In view of the foregoing, it would be desirable to the disclosure cover belong to it is appended
The modifications and variations of the disclosure in the range of claims and its equivalent.
Claims (28)
1. a kind of beam tracking method, for user equipment in the multiple cell group of millimeter-wave communication system, the method includes：
Period first time be inscribed packet receiving include one first reference signal sequence associated with a first community wave beam and
More than one first a reference signal sequences of one second reference signal sequence associated with a second community wave beam；
Measurement includes the wave beam matter of the first measurement of the first community wave beam and the second measurement of the second community wave beam
Amount；
A measurement return is generated based on the beam quality；And
Transmit the measurement return.
2. the method as described in claim 1, wherein the measurement return include a preferred cells beam an index and
The measurement of at least two beam qualities.
3. method according to claim 2, wherein in response to having determined the first community wave beam in the wave beam
One highest wave beam quality of the cells beam among mass measurement, the index of the preferred cells beam correspond to described
First community wave beam.
4. method as claimed in claim 3, wherein transmitting the measurement return and including：
The measurement return is transmitted via a preferred user equipment wave beam is used.
5. method as claimed in claim 4, wherein the preferred user equipment wave beam is current in use corresponding to one
User equipment wave beam or the beam quality measurement among cells beam the highest wave beam quality.
6. the method as described in claim 1, wherein first reference signal sequence connects derived from the first community wave beam
The one first beam quality measuring reference signals received, and second reference signal sequence is derived from the second community wave beam
Received one second beam quality measuring reference signals.
7. method as claimed in claim 3, wherein determining the highest beam quality among beam quality measurement
Including：
Each of record or update the beam quality measurement；And
Institute based on one of them with a highest signal noise value in beam quality measurement to determine cells beam
State highest wave beam quality.
8. the method for claim 7, further comprising：
The beam quality is maintained to measure in a table, wherein each of beam quality measurement corresponds to a cell wave
Beam index and a user equipment beam index.
9. method as claimed in claim 4, wherein transmitting the measurement return and including：
Believe in a uplink portion of a beam forming header in an entity upload control during the preferred time cycle
The measurement return is transmitted in road or an entity Uplink Shared Channel.
10. method as claimed in claim 9, further comprises：
A random access lead code is transmitted in an entity random access channel during the preferred time cycle.
11. method as claimed in claim 10, wherein the preferred time cycle corresponds on currently in use one
The line link time cycle or with have the area a downlink Zhong little wave beam the beam quality measurement among the highest
The associated uplink time period of the cells beam of beam quality.
12. method as claimed in claim 9, wherein the random access lead code is based on frequency subband or based on periodically
's.
13. a kind of beam tracking method, the method includes：
The one the of one first time multiplex configuration generation configure according to multiple time multiplex is transmitted within period first time
One reference signal sequence, wherein first time multiplex in a period of time is configured in the multiple cell group
Each cell is unique；
In response to transmitting first reference signal sequence, a measurement return is received from a preferred cells beam；
It is based in response to the measurement return is received, received uplink signal executes one from the preferred cells beam
Cell quality measurement；And
The cell quality measurement is transferred to a controller.
14. method as claimed in claim 13, wherein transmitting first reference signal sequence and including：
First time multiplex configuration transmission based on the configuration of the multiple time multiplex corresponds to multiple beam sequences and identifies
One first reference signal sequence of one first wave beam sequence identifier in symbol.
15. method as claimed in claim 14, further comprises：
Transmission corresponds to one second beam sequences mark in the multiple beam sequences identifier within period first time
One second reference signal sequence for knowing symbol, wherein other base of the multiple beam sequences identifier by the multiple cell group
It stands shared.
16. method as claimed in claim 13, wherein the measurement return include an index of a preferred cells beam with
And at least part of the cell quality measurement.
17. the method described in claim 16, wherein to correspond to one current in use small for the preferred cells beam
Area's wave beam has determined as the cells beam with the highest beam quality among beam quality measurement.
18. method as claimed in claim 15, wherein the first wave beam sequence identifier is corresponded to by the base station
One first beam quality measuring reference signals among one first community wave beam of transmission, and second beam sequences identify
Symbol corresponds to one second beam quality measuring reference signals among the second community wave beam transmitted by the base station.
19. method as claimed in claim 18, wherein receiving the uplink signal from the preferred cells beam
Including：
Receive the first beam quality measuring reference signals in the measurement return one is signal quality measured, wherein
The measurement return is located at the entity in a uplink portion of a beam forming header during the preferred time cycle
In uplink control channel or an entity Uplink Shared Channel.
20. method as claimed in claim 19, wherein receiving the uplink signal from the preferred cells beam
Including：
A random access lead code is received, wherein the random access lead code is located at one during a preferred time cycle
In an entity random access channel in the uplink portion of beam forming header.
21. method as claimed in claim 20, wherein the preferred time cycle corresponds on currently in use one
The line link time cycle or with the highest wave beam with cells beam among beam quality measurement in the downlink
The associated uplink time period of the cells beam of quality.
22. method as claimed in claim 13, wherein executing the cell matter based on the uplink signal received
Measurement includes：
During a preferred time cycle an entity uplink control channel or an entity Uplink Shared Channel or an entity with
Machine accesses channel or related to the entity uplink control channel or entity Uplink Shared Channel of the preferred cells beam
The cell quality measurement is executed in the reference signal of connection.
23. method as claimed in claim 22, wherein random access lead code is based on frequency subband or based on periodic.
24. method as claimed in claim 13, wherein first time multiplex configuration of the multiple time multiplex configuration
Via controller configuration or it is semi-continuous dispatch or dynamically dispatch, and be configured to one second from first time multiplex
One change of time multiplex configuration is determined via a controller.
25. method as claimed in claim 13, wherein the preferred cells beam be based on the cells beam from
The measurement received in user equipment is returned to determine.
26. method as claimed in claim 13, further comprises：
Based on from the uplink signal received in the preferred cells beam the cell quality measurement from
A decision of a preferred cell is received in the controller.
27. a kind of user equipment, including：
One transmitter；
One receiver；And
One processor is couple to the transmitter and the receiver and is configured to perform the following operation：
Receiving within period first time via the receiver includes one first ginseng associated with a first community wave beam
Examine more than one first a reference signals of signal sequence and one second reference signal sequence associated with a second community wave beam
Sequence；
Measurement includes the wave of one first measurement of the first community wave beam and one second measurement of the second community wave beam
Beam quality；
A measurement return is generated based on the beam quality；And
The measurement return is transmitted via the transmitter.
28. a kind of base station, including：
One transmitter；
One receiver；And
One processor is couple to the transmitter and the receiver and is configured to perform the following operation：
Within period first time via the transmitter transmit according to it is multiple when time multiplex configuration one first time-division it is more
The first reference signal sequence that work configuration generates, wherein the first time multiplex configuration is for described more in a period of time
Each cell in cell group is unique；
In response to transmitting first reference signal sequence, a measurement is received from preferred cells beam via the receiver
Return；
It is based in response to the measurement return is received, a received uplink signal executes from the preferred cells beam
The measurement of one cell quality；And
The cell quality measurement is transferred to a controller via the transmitter.
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| US201762509203P | 2017-05-22 | 2017-05-22 | |
| US62/509,203 | 2017-05-22 | ||
| US15/684,952 | 2017-08-24 | ||
| US15/684,952 US20180338254A1 (en) | 2017-05-22 | 2017-08-24 | Beam tracking method in multi-cell group of millimeter wave communication system and related apparatuses using the same |
| TW106142105A TWI717575B (en) | 2017-05-22 | 2017-12-01 | Beam tracking method in multi-cell group of millimeter wave communication system and related apparatuses using the same |
| TW106142105 | 2017-12-01 |
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