CN106413044B - In the wireless communications method and its user's equipment of unlicensed spectrum - Google Patents
In the wireless communications method and its user's equipment of unlicensed spectrum Download PDFInfo
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- CN106413044B CN106413044B CN201610452131.2A CN201610452131A CN106413044B CN 106413044 B CN106413044 B CN 106413044B CN 201610452131 A CN201610452131 A CN 201610452131A CN 106413044 B CN106413044 B CN 106413044B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/16—Discovering, processing access restriction or access information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
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Abstract
The present invention be directed to a kind of wireless communications method in unlicensed spectrum and its user's equipment.In an exemplary embodiment, method the present invention be directed to wirelessly communicate in unlicensed spectrum, it is suitable for base station, the method includes but is not limited to: setting up primary service area in authorization frequency spectrum；Time service area is set up using as virtual frequency area in unlicensed spectrum；Configure the frequency hop sequences in virtual frequency area；Frequency hop sequences are transmitted to secondary service area and according to frequency hop sequences control time service area operation by primary service area.Technical solution of the present invention carries out channel perception among the virtual frequency area of unlicensed spectrum and lines up (channel aware scheduling) and frequency hopping, so as to reducing interference, increasing communication efficiency and improving total system efficiency.
Description
Technical field
The present invention be directed to a kind of wireless communications method in unlicensed spectrum and its user's equipment
Background technique
In the past, cellular system was in dedicated or authorization frequency spectrum operation, and wherein base station and wireless terminal are by awarding
It weighs to the radio frequency of wireless operator (Radio Frequency, RF) and is communicated.Cellular network communication system is
It is widely used such as: industry, science and medicine (ISM) radio band or other free frequency spectrums.In Long Term Evolution
Unlicensed spectrum is used in (Long Term Evolution, LTE), is attracted attention by telecommunication apparatus dealer and operator.Its
One of the reasons why be, authorization frequency spectrum source be limited.In order to provide the higher throughput services of many users, LTE system
Unlicensed spectrum can be used to communicate in system.
In recent years, LTE authorization auxiliary access (LTE Licensed-Assisted Access, LTE-LAA) has been 3GPP
Version 13 and the version in future are discussed.The framework of LTE-LAA unlicensed spectrum is also referred to as unauthorized LTE
(Unlicensed LTE, LTE-U).LTE-U is likely to become the key features of next-generation cellular system.When LAA is wirelessly communicated
When being used in unlicensed spectrum or free frequency spectrum, there may be other to use identical or different wireless access technology (radio
Access technologies, RATs) communication device, be in communication in same frequency spectrum.Such as: the operation of LTE-U must be with
Existing Wi-Fi coexistent radio.
Therefore, in order to be coexisted with other using the wireless access technology of same unauthorized frequency range, in unauthorized frequency range
Operating LAA is a major challenge.By unauthorized frequency range by other as the wireless access technology of Wi-Fi is shared, and have one
A little multimode radio devices and radio component, such as the base station or intelligent of IEEE 802.11ac and LAA are supported simultaneously
Mobile phone, those may have different settings using the wireless access technology of unlicensed spectrum to channelizing.Use different channels
Change the wireless of (such as: some radio are narrow frequency, some radio are that wideband, some radio can operate in variable bandwidth)
Common point and intercommunity between electrical access technology will be problems to be solved.
Fig. 1 shows the 5GHz frequency taken according to 802.11 standard of IEEE by 3GPP TR 36.889V0.4.0 (2015-04)
The channelizing of rate.By Fig. 1 it is evident that unauthorized communication systems different at present possesses different channelizing strategies.To make nothing
Line communication system reaches reasonable efficiency, and radio operation needs to be contemplated in the multi-pass that may generate interference by each unknown source
How communication device is set under road environment.In order to wirelessly communicate, carrying out adaptive selection in some unauthorized channels can drop
Low interference increases communication efficiency and improves system effectiveness.Therefore, it for following wireless communication, need to propose in multi-pass
The efficient mechanism of unauthorized frequency range is set under road environment.
Summary of the invention
Therefore, the side that the present invention be directed to wirelessly communicate in the relevant apparatus in unlicensed spectrum and using same procedure
Method.
In an exemplary embodiment, method the present invention be directed to wirelessly communicate in unlicensed spectrum is suitable for base
Platform, the method include but is not limited to: setting up primary service area (primary serving cell, Pcell) in authorization frequency spectrum；Not
Authorization frequency spectrum sets up time service area (secondary serving cell, Scell) using as virtual frequency area (virtual
Frequency cell, VFC)；Configure the frequency hop sequences of VFC；Frequency hop sequences are transmitted to Scell by Pcell；And according to jump
Frequency sequence controls Scell operation.
In an exemplary embodiment, method the present invention be directed to wirelessly communicate in unlicensed spectrum is suitable for using
Person's equipment, this this method includes but is not limited to: being linked to Pcell in authorization frequency spectrum；Scell is linked in unlicensed spectrum；It is logical
It crosses Pcell and receives control signal message to operate the VFC in Scell；The frequency hopping sequence of VFC is received from control signal message
Column；And it is operated in VFC according to frequency hop sequences.
In an exemplary embodiment, the present invention be directed to a kind of user's equipment, including but not limited to: wireless transceiver with
And it is coupled to the processor of wireless transceiver.Processor is at least configured that in authorization frequency spectrum, is connected to by wireless transceiver
Pcell；Scell is set up using as VFC in unlicensed spectrum；Configure the frequency hop sequences of VFC；Frequency hop sequences are transmitted by Pcell
To Scell；And Scell operation is controlled according to frequency hop sequences.
In order to be easier to understand the feature and advantage of the disclosure above of the present invention, embodiment has in detail below with attached drawing
Description.Although it is understood that foregoing general description and following detailed description are all exemplary, and it is intended to mention
It is explained further for such as claims are revealed.
Although the present invention is disclosed as above with embodiment, however, it is not to limit the invention, any technical field
Middle tool usually intellectual, without departing from the spirit and scope of the present invention, when can make some changes and embellishment, thus it is of the invention
Protection scope when view appended claims institute defender subject to.
Detailed description of the invention
Comprising attached drawing to further understand the present invention, and attached drawing is incorporated to and in this specification and constitutes one of this specification
Point.Described Detailed description of the invention the embodiment of the present invention, and together with the description to explain the principle of the present invention.
Fig. 1 shows the 5GHz frequency according to 802.11 standard channel of IEEE；
An exemplary embodiment shows the mapping relations between virtual area ID and true area ID to Fig. 2A according to the present invention；
An exemplary embodiment shows the relationship change between virtual area ID and true area ID to Fig. 2 B according to the present invention；
An exemplary embodiment shows virtual frequency area in the operation of wireless network to Fig. 3 according to the present invention；
An exemplary embodiment shows the operation of frequency hopping to Fig. 4 according to the present invention；
An exemplary embodiment shows the side in unlicensed spectrum suitable for the wireless communication of base station to Fig. 5 according to the present invention
Method；
An exemplary embodiment shows the wireless communication for being suitable for user's equipment in unlicensed spectrum to Fig. 6 according to the present invention
Method；
An exemplary embodiment shows the functional block diagram of base station to Fig. 7 according to the present invention；
An exemplary embodiment shows the functional block diagram of user's equipment to Fig. 8 according to the present invention.
Description of symbols:
301: base station；
311,312,313,314,315,316: mobile station；
321,322,323: channel；
700: base station；
701,801: processing unit；
702,802:RF transceiver；
703: backhaul transceiver；
704,804: storaging medium；
800: user's equipment；
803:Wi-Fi transceiver；
S501, S502, S503, S504, S505, S601, S602, S603, S604, S605: step.
Specific embodiment
Refer to embodiment disclosed by the invention in detail now, example therein is shown in the drawings, may Anywhere have
Identical reference symbol is for representing the same or similar part with instruction in attached drawing and specification.
Due to operate may be easy under multichannel environment, when being carried out wireless communication in unlicensed spectrum it is various
Unauthorized operation interference with different channelizing mechanism, the present invention describe the method and correlation dress of a kind of wireless communication system
Set, among the virtual frequency area of unlicensed spectrum carry out channel perception line up (channel aware scheduling) with
And frequency hopping, so as to reducing interference, increasing communication efficiency and improving total system efficiency.
The present invention proposes to establish reflecting between an at least virtual frequency area (VFC) and at least an actual frequency area (AFC)
Penetrate relationship.Large-scale service area base station can be established by carrier wave converging operation (carrier aggregation operation)
Primary service area (Pcell) and one or more service area (Scell).Pcell operates in main carrier frequency and user's equipment
(UE) progress initial stage connection establishes program or UE is made to start connection re-establishment program；Scell is operated under the second carrier frequency,
Once establishing and can be set in radio resource control (radio resource control, RRC) connection, and can be used to mention
For additional radio resource.VFC can be deployed in Scell by base station and be operated in unlicensed spectrum.
VFC can distribute identification code (ID) by base station, also known as virtual frequency area identification code (VFC-ID), and AFC can be by
Base station distributes identification code (ID), also known as actual frequency area identification code (AFC-ID).This distribution can be static or semi-static
Mode.Single a VFC-ID can map to one or more AFC-ID.
Mapping relations may also comprise one group of radio channel.For example, specific radio channel can be set to AFC.For another example
Single a VFC can be set one group of radio channel.Therefore, actual radio channel can be from this group of radio channel in VFC
To be selected.
As an example, an exemplary embodiment shows reflecting between virtual area ID and true area ID to Fig. 2A according to the present invention
Penetrate relationship.In fig. 2, VFC can be designated as VFC ID#X, and wherein X is nonzero integer.Also, in this example, VFC ID#
X can configure one group of radio channel, be 1~channel of channel 100.Each group of channel can correspond to different AFC.And in Fig. 2A
In, VFC ID#X can be set to have potential association with AFC ID#N, AFC ID#M and AFC ID#P, wherein N, M and P
For different nonzero integers, and each ID can be corresponded to the different channels selected from 1~channel of channel 100.
VFC can be set to convert its operating frequency.When base station needs will switch the operating frequency of Scell, Scell will
VFC maps to different AFC.In other words, when the operating frequency of Scell changes in unlicensed spectrum, a VFC
With the mapping relations of multiple AFC can from a VFC ID to an AFC ID (such as: VFC ID#1~AFC ID#1) change into
This VFC ID to different AFC ID (such as: VFC ID#1~AFC ID#2), therefore when AFC ID changes, VFC ID is maintained
It is constant.
As an example, an exemplary embodiment shows the pass between virtual area ID and true area ID to Fig. 2 B according to the present invention
System's variation.B according to fig. 2, AFC#1 are using carrier frequency f1 and have physical areas identification code AFC ID#1；AFC#2 uses carrier frequency
Rate f2 and have physical areas identification code AFC ID#2.Assuming that base station uses VFC ID#X, wherein X in unlicensed spectrum at present
It is nonzero integer, but may be determined in unlicensed spectrum using the base station of f1 by channel radio in unlicensed spectrum at present
Believer in a certain religion f1 is changed to f2.In this way, base station may relatively be inclined to use identical VFC ID.Therefore, base in this example
Platform can keep identical VFC ID#X.However, in order to which carrier frequency is changed to f2 from f1, from VFC ID#X to AFC ID#1
Between mapping VFC ID#X to AFC ID#2 will be modified to as shown in Fig. 2 B.
An exemplary embodiment shows virtual frequency area in the operation of wireless network to Fig. 3 according to the present invention.In Fig. 3 example,
Wireless network includes but is not limited to: base station 301, multiple UE (i.e. mobile station or MS) 311,312,313,314,315,316, behaviour
Make in the unauthorized wireless electricity LTE (LTE-UL) in channel 1 321, operate in the unauthorized wireless electricity LTE in channel 2 322
(LTE-UL) and unauthorized wireless electricity LTE (LTE-UL) in channel 3 323 is operated in.
Each UE can be connected to VFC.Before being connected to VFC, each UEs 311~316 can pass through base station 301
Pcell is connected to base station 301 by the carrier frequency authorized.It is connected to after Pcell, any one UEs 311~316 can lead to
The setting of base station 301 is crossed to start to be led to base station 301 in wherein one AFC associated with the VFC in service
Letter.Any one can be used the radio channel in this existing AFC in base station 301 in UEs311~316 in existing AFC and its
He communicates in UE.In order to change AFC, UE can receive control signal message relevant to VFC operation.It reacts on received
Control signal message, any one UEs 311~316 can in the case where VFC remains unchanged, according to control signal message instruction
Change its existing AFC.
According to the rule and mode of change AFC, identical or different control signal message can also notify any one UEs 311
~316.For example, UEs 311~316 can change its existing AFC automatically and VFC is maintained not after receiving control signal message
Become.In one embodiment, VFC can set all wireless elements connected to it (such as: 311~316) in accordance with identical AFC become
More mode.This example can be used as the exemplary embodiment of " frequency hopping virtual area ", will be explained in more detail.
In general, the concept of VFC and AFC is applicable to the cellular operation of any unauthorized such as: 3GPP LAA, unauthorized
The cellular operation of 5G LTE or any following in unlicensed spectrum.According to an exemplary embodiment, VFC can be first set to grasp
Make in unauthorized channel, subsequent all UEs associated with this virtual area will use first unauthorized channel to carry out channel radio
Letter.Later, virtual area can be reset to operate in different unauthorized channels, and all associated with this virtual area
UE carries out wireless communication the unauthorized channel for using this different.The change in unauthorized channel can be by eNB or any network-control
The carrier frequency of VFC is changed to second unauthorized channel from first unauthorized channel by unit triggers.
Then, the operation of frequency hopping virtual area will be further described.The virtual fauna of frequency hopping is based on each wireless area
Operate the VFC in frequency hop sequences.Frequency hop sequences can be the preset frequency hop sequences assigned by base station or can be by base station dynamic
It is determined according to instant network disturbance regime.This is different from conventional wireless element, and frequency hopping operation is based on each element
Occur, rather than based on each cell.Traditionally, if the wireless area of LTE system cell is to be set to jump
The static frequency range of frequency.In this announcement, since cell can cover at least one base station and several elements, multiple UE can simultaneously from
One operating frequency jumps to another.
Therefore, because frequency hopping virtual area is the VFC for operating in different frequency channel according to frequency hop sequences, VFC will lead to
It crosses and carries out frequency agility according to the sequence of setting to change the mode of carrier frequency.For example, frequency hop sequences are set as
The VFC of [f1f3f2f4] operates in carrier frequency f1 at period 1, and whens period 2 operates in carrier frequency f3, and whens period 3 operates
Carrier frequency f4 is operated in when carrier frequency f2, period 4, wherein f1, f2, f3, f4 are different channels in unlicensed spectrum
Carrier frequency；Period 1, the period 2, the period 3, the period 4 can be evenly distributed or unequal distribution.According to an exemplary embodiment, when
Carrier frequency can recall to f1 and repeat identical sequence, [f1f3f2f4] when section 5.Alternatively, frequency hop sequences can be it is disposable, therefore
Carrier frequency will not convert, until receiving another group of frequency hop sequences issued from base station by another control signal message.
In general, UE by receive the control signal message that is issued from base station obtain virtual area frequency hop sequences (such as:
[f1f3f2f4]).Alternatively, UE itself can store such sequence, therefore control signal message is not needed.Virtual area frequency hop sequences
(such as: [f1f3f2f4]) can be by the operating frequency in unlicensed spectrum, and control channel outside frequency range is set.For example,
In LTE-LAA operation, control channel general action is in the Pcell using authorised channel.It is operated under unlicensed frequency
Scell can be operated such as frequency hopping virtual area above-mentioned.
In an exemplary embodiment, base station can be by authorization Pcell transmission control signal message to set unauthorized frequency
The VFC of section is used transmitting as the unauthorized Scell in unauthorized frequency range for data.For example, LTE eNB can pass through
Pcell transmission control information operates in the UE of identical frequency hopping VFC to one group, to set such unauthorized Scell as frequency hopping void
Quasi- area.This control information includes but is not limited to frequency hop sequences.Use the temporary identification code (radio of specific radio net
Network temporary identifier, RNTI), this control information can pass through the entity downlink control channel of Pcell
(physical downlink control channel, PDCCH) transmission.RNTI is embedded in the identification code of PDCCH, owns
The target UE for controlling information can receive this control signal message in a manner of obtaining RNTI by the blind decoding of PDCCH.With this
The practice, it is all to use identical RNTI that execute same frequency hopping sequence in same unauthorized Scell as the UE of identification code
Column.
In addition to above-mentioned control signal message, base station can transmit other trigger signal to start in unauthorized Scell
Carry out data transmitting.For example, base station can be passed by the frequency range (such as: using authorization frequency spectrum through Pcell) outside unauthorized Scell
Trigger signal is sent to trigger frequency hopping operation.Similarly, it modifies or releases frequency hopping operation and be also required to other control signal.
The frequency hopping unauthorized area can have several Xiang Youdian.The one of them advantage in this frequency hopping unauthorized area is system effect
It can increase with frequency diversity and improve.By executing frequency hopping, Scell can avoid base by way of jumping in each frequency
Platform can not detect immediately or unknown interference occurs.
UE in frequency hopping unauthorized area can be by scheduling for the frequency sub-band of each setting or the symbol or time slot of each setting
Carry out potential ascending transmission.However, each actual ascending transmission of LTE-LAA UE can depend on first listening the knot for passing trial afterwards
Fruit, it will it is illustrated in further detail.
The present invention is that frequency hopping virtual area proposes that channel perceives scheduling mechanism.The channel of the frequency hopping VFC proposed perceives scheduling
The first purpose, be to mitigate the hiding Wi-Fi access point (access point, AP) in concealed terminal such as unauthorized frequency range
Relevant issues.In order to carry out channel perception scheduling, base station can upload wireless element scheduling in different time slots, and time slot can
The time slot for making the wireless element of these schedulings that there is least interference is determined as by base station.However, being actually before row transmitting
In response to potential interference, each wireless element can carry out the drive sweep in different channels before scheduling time slot.If special modality detects
To strong jamming, this detects that ascending transmission will not occur for strongly disturbing special modality.It that case, wireless element can select
Different channel transmitting.The channel perception scheduling mechanism of frequency hopping virtual area is also applicable in downlink data transmitting.
Referring to for Fig. 3, it is assumed that the setting operation of base station 301 is such as VFC, it is assumed that it operates in logical in unlicensed spectrum
Road (CH) 1 or channel 2 or channel 4.Base station 301 can scheduling upstream or downstream communication to avoid the wireless of other unauthorized frequency ranges
Electricity (such as: it is interfered caused by LTE-UL 321,322,323).Therefore, when VFC operates in channel 1 or channel 4, near operation is leaned on
The MS 316 of the LTE-UL 322 in channel 2 can be by scheduling to be communicated.Similarly, when VFC operates in channel 1 or channel 2
When, MS 313 or MS 314 can be by schedulings to be communicated.When VFC operates in channel 2 or channel 4, MS 311 or MS 312
It can be by scheduling to be communicated.
In general, the present invention proposes to carry out wireless communication in unlicensed spectrum, before data transmitting, wireless UE
It may need by executing potentially useful multichannel drive sweep, to carry out idle channel assessment or carrier sense.Such as Fig. 1 institute
Show, possible in unlicensed spectrum there are many channels by different communication system uses.Therefore, wireless element, which need to execute, multiple does not award
It weighs the carrier sense in channel and selects one of them to transmit data.Such operation can realize by the concept of VFC, wherein wireless UE
VFC can be connected to.In general, VFC can be associated with or map to one or more unauthorized channels.This wireless UE can be perceived thus
Multiple channels in unlicensed spectrum and one available channel of selection, transmitted with passing through the channel of selection (as: by with selection
The associated AFC in channel).
In an exemplary embodiment, the present invention proposes the network that LTE-LAA is carried out using above-mentioned virtual frequency area concept
Planning and radio resources allocation are as follows.As shown in Figure 1, since there are many potential unauthorized channels for possibility, with each
The network planning carried out based on channel may become complicated.In order to which the complexity with lower grade comes assignment channel and progress
The network planning, service supplier can set unauthorized LTE-LAA base station according to VFC, this VFC is associated with one group of true unauthorized
Channel.
For example, it is contemplated that a kind of situation, the 1st base station sets one or more VFC, and VFC uses three kinds in unlicensed spectrum
Different carrier frequency f1, f2, f3 is as three different channels.Likewise, it is assumed that the 3rd base station, the 5th base station and
7th base station is also set to using identical channel f1, f2 and f3.In addition, it is assumed that the 2nd base station, the 4th base station and
6th base station is set as in unlicensed spectrum using three kinds of different carrier frequencies f4, f5 and f6.In other words, base
Platform 2 can set VFC and map to AFC#4 by using the carrier frequency f4 in unauthorized Scell, and AFC#5 is by using unauthorized
Carrier frequency f5, AFC#6 in Scell is by using the carrier frequency f6 in unauthorized Scell.In the case, network can
It plans a kind of setting, uses different group of frequencies interfering with each other to avoid base station 2 and base station 3.Even if in this manner,
Base station 2 and base station 3 may be very close, as long as selecting the channel transmitting of different (groups) can be to avoid interference.For number
According to the relevant operation of communication, base station 1, base station 3, base station 5 and base station 7 can be in candidate collection f1, f2 and f3
One channel of middle selection, makes them not will cause severe jamming to each other.When base station 1 selects f2 to carry out data transmitting, base station 1
VFC can be set and map to AFC#2, be the AFC of carrier frequency f2.
An exemplary embodiment shows the operation of frequency hopping to Fig. 4 according to the present invention.In this example, it is assumed that a load has been established in base station
Wave flowcollector aggregation scheme FlowCollector comprising but be not limited to operate in the Pcell in a unlicensed spectrum and at least Scell, i.e. Scell 1,
Scell 2, Scell 3 and Scell 4.Every Scell is all set with VFC, and every VFC can map to multiple AFC.This
Base station in example can be LTE eNB and can set other VFC in multiple Scell, grasp as in unlicensed spectrum
The channel frequency hopping area of the LTE-LAA of work.Assuming that there is 4 channels, i.e., channel 1, channel 2, channel 3 and channel 4 are in unauthorized frequency
In spectrum.
In time t1, base station can get metric data relevant to disturbance level or can get each in this 4 channel
Whether channel can be used to the metric data transmitted.This metric data can be by directly executing carrier sense or receiving from these channels
In the measuring reports of UE obtain.After the metric data for obtaining these channels, in time t2, base station can 4 channel thus
Setting frequency hop sequences out of the ordinary.Channel frequency hop sequences can be transmitted by the control signal message being embedded in PDCCH by Pcell.
By searching the RNTI in PDCCH blind decoding, UE can obtain frequency hop sequences by control signal message.
Scell can be set frequency hop sequences, be unique for specific Scell.This sequence specifies Scell's 1
Frequency hopping VFC can use channel 3, use channel 4 in time t3 and use channel 1 in time t4 in time t2.Similarly, Scell
2 frequency hop sequences are [2,1,3], the frequency hop sequences of Scell 3 are [4,3,2] and the frequency hop sequences of Scell 4 be [1,2,
4].This indicates that in time t2, time t3 and time t4, one channel will use different Scell.
After time t4, in one embodiment, identical frequency hop sequences can be repeated.This indicate, time t5, time t6,
And (not shown) when time t7, the frequency hop sequences of Scell 1 will be [3,4,1].In addition, frequency hop sequences can be disposable
, this indicates that otherwise Scell 1 will not carry out frequency hopping unless receiving another frequency hop sequences.Use mentioned frequency hop sequences
Scell will benefit from diversity gain, such as by averaging out different time points when, the interference in different unauthorized channels.
An embodiment shows the method wirelessly communicated in unlicensed spectrum from the angle of base station to Fig. 5 according to the present invention.
In step S501, base station is established or is operated in authorization frequency spectrum using as primary service area (Pcell).In step S502,
Base station, which is established, is covered in the second service area (Scell) of unlicensed spectrum, and the operation of this second service area is using as virtual
Frequency zones (VFC).In step S503, base station can set frequency hop sequences and use for virtual frequency area, this virtual frequency area
Carrier frequency will convert at any time according to frequency hop sequences.In step S504, base station can be transmitted in step S503 by Pcell
The frequency hop sequences of setting are to Scell.In step S505, base station will control Scell and operate according to frequency hop sequences.
In an exemplary embodiment, frequency hop sequences can include: in the first period, operation in unlicensed spectrum the
Under one carrier frequency；In the second period after and then the first period, the second carrier wave in unlicensed spectrum is operated
Under frequency；And in the third period after and then the second period, the third carrier frequency in unlicensed spectrum is operated
Under rate.
In an exemplary embodiment, frequency hop sequences can be preset according to current disturbance level or dynamic is set.Frequency hopping
Sequence can be set to repetition or disposable.
In an exemplary embodiment, VFC can be mapped to multiple actual frequency areas (AFCs).VFC has unique VFC
ID, and each AFC has unique AFC ID.
In an exemplary embodiment, control Scell be may relate to according to frequency hop sequences operation using changing VFC ID and more
Mapping relations between a AFC IDs control Scell according to frequency hop sequences to change the operating frequency of Scell.When AFC is every
When changing during one frequency hopping, VFC can remain unchanged.
In an exemplary embodiment, transmitting frequency hop sequences to Scell, which may relate to the control that transmitting includes frequency hop sequences, to be believed
Number information is to Scell.The temporary identification code of specific radio net (RNTI) can be utilized by controlling signal message, pass through Pcell's
Entity downlink control channel (PDCCH) is transmitted.
In an exemplary embodiment, the frequency hop sequences in setting VFC may relate to execute more in unlicensed spectrum
The carrier sense of a carrier wave；And the carrier sense for executing the carrier wave in unlicensed spectrum is reacted on, set frequency hop sequences.
Base station can be by way of not making its frequency hop sequences have channel Chong Die with the frequency hop sequences of neighbouring Scell, to set frequency hopping sequence
Column.
In an exemplary embodiment, base station can transmit another control signal message to open or close control Scell root
It is operated according to frequency hop sequences.
An embodiment shows the side wirelessly communicated in unlicensed spectrum from the angle of user's equipment to Fig. 6 according to the present invention
Method.In step s 601, UE can be linked to Pcell in authorization frequency spectrum.In step S602, UE can be linked in unlicensed spectrum
Scell.The sequence of step S601 and step S602 can exchange.In step S603, UE, which receives control signal by Pcell, to be believed
Breath is to operate the virtual frequency area in Scell.In step s 604, UE receives the frequency hopping sequence in virtual frequency area by Pcell
Column.In step s 605, UE is operated in virtual frequency area thus according to frequency hop sequences.
In an exemplary embodiment, frequency hop sequences will include: in the first period, operation in unlicensed spectrum the
Under one carrier frequency；In the second period after and then the first period, the second carrier wave in unlicensed spectrum is operated
Under frequency；And in the third period after and then the second period, the third carrier frequency in unlicensed spectrum is operated
Under rate.UE can receive frequency hop sequences repeatedly to operate or once receive all sequences.
In an exemplary embodiment, VFC can be mapped to multiple actual frequency areas (AFCs).VFC possesses unique VFC
ID, and each AFC has unique AFC ID.
In an exemplary embodiment, it may relate to identify based on change virtual frequency area in VFC according to frequency hop sequences operation
Mapping relations between code and multiple actual frequency areas identification code, operate in virtual frequency area according to frequency hop sequences.When AFC is every
When changing during one frequency hopping, VFC can remain unchanged.
In an exemplary embodiment, the frequency hop sequences for receiving VFC from control signal message be may relate to according to specific nothing
The temporary identification code of line electric network (RNTI) passes through the entity downlink control channel of Pcell
(PDCCH) control signal message is received.
In an exemplary embodiment, before uplink, the load of multiple carrier waves in unlicensed spectrum is can be performed in UE
Wave sensing, after executing the channel clearance assessment of the carrier wave in unlicensed spectrum, UE can be selected in unlicensed spectrum
Workable carrier frequency is uploaded.
In an exemplary embodiment, UE can receive another control signal message to open or close control basis in VFC
Frequency hop sequences operation.
An exemplary embodiment shows the functional block diagram of base station to Fig. 7 according to the present invention.Example base station 700 includes but not
It is limited to be coupled to the processing unit 701, backhaul transceiver 703 and storaging medium 704 of RF transceiver 702.RF transceiver 702
Conveyer and receiver comprising being adjusted to authorization frequency spectrum.As optional project, RF transceiver 702 also may include additional component with
It transmits and receives in unlicensed spectrum.Backhaul transceiver be for communicated with other base station or with operate in base station 700
The small base station in region communicates.Backhaul transceiver can be used to communicate with the small base station as Scell.Storaging medium 704 can deposit
Storage, but be not limited to, the mapping relations between VFC and AFC, such as definite mapping among VFC IDs and AFC IDs, and
Channel number above-mentioned.Storaging medium for fast hard disk, hard disk or any can provide the temporarily storage that stores and permanently store
Hard disk.
Processing unit 701 is set to execute some functions, these functions carry out nothing in unlicensed spectrum with Fig. 5 description
The method and above-described embodiment of line communication are related.The function of processing unit 701 can be by using one or more programmable units, such as
Microprocessor, microcontroller, dsp chip, FPGA etc. are realized.The function of processing unit 701 can also be by other electronics
Element or IC are realized, and hardware or software field can be used to realize for the function of processing unit 701.
An exemplary embodiment shows the functional block diagram of user's equipment to Fig. 8 according to the present invention.Example UE800 includes but not
It is limited to be coupled to the processing unit 801, Wi-Fi transceiver 803 and storaging medium 804 of RF transceiver 802.RF transceiver 802
Comprising conveyer and receiver, conveyer and receiver are brought to authorization frequency spectrum to carry out the communication with base station and other UE.
UE may include the hardware transceiver in unlicensed spectrum communication, such as Wi-Fi transceiver 803.704 storaging medium of storaging medium
704 can store, but be not limited to, definitely the reflecting such as among VFC IDs and AFC IDs of the mapping relations between VFC and AFC
It penetrates and channel number above-mentioned.Storaging medium can temporarily be stored and permanently be deposited for fast hard disk, hard disk or any can provide
The storage hard disk of storage.
Processing unit 801 is set to execute some functions, these functions carry out nothing in unlicensed spectrum with Fig. 6 description
The method and above-described embodiment of line communication are related.The function of processing unit 801 can be by using one or more programmable units, such as
Microprocessor, microcontroller, dsp chip, FPGA etc. are realized.The function of processing unit 801 can also be by a other electronics
Element or IC are realized, and hardware or software field can be used to realize for the function of processing unit 801.
In conclusion the present invention is suitably employed in wireless communication system, and enable cordless communication network by realizing to be jumped
Frequency virtual frequency area authorizes frequency spectrum and unlicensed spectrum to utilize, to reduce interference and increase network efficiency.
Unless there are being expressly recited, otherwise in the detailed description of embodiment disclosed herein, element, movement or refer to
Order is not construed as absolutely crucial or necessary.Meanwhile as used herein, each word " one " and " one " may include multiple projects.
If only referring to one, term " single " or similar language will use.In addition, back table arranges multiple projects and/or a variety of projects
Term " any ", as used herein, it is intended to including " any ", " any combination of ", " any number of ", and/or " any
Any number of any combination of project " and/or " project kind ", individually or with sundry item and/or other kind of intermediate item one
It rises and uses.In addition, as used herein, term " group " is intended to include any amount of project, includes zero.In addition, it is as used herein,
Term " number " is intended to include any number, includes zero.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (11)
1. a kind of wireless communications method in a unlicensed spectrum is suitable for a base station, which comprises
A primary service area is set up in an authorization frequency spectrum；
A service area is set up using as a virtual frequency area in the unlicensed spectrum；
Configure a frequency hop sequences in the virtual frequency area；
The frequency hop sequences are transmitted to the secondary service area by the primary service area；And
According to the frequency hop sequences control secondary service area operation, wherein the virtual frequency area is mapped to multiple true frequencies
Rate area, the virtual frequency area have a unique virtual frequency area identification code, and each actual frequency area is unique with one
Actual frequency area identification code, and the step of controlling secondary service area operation according to the frequency hop sequences includes:
Using the mapping relations for changing virtual frequency area identification code and the multiple actual frequency area identification code, according to described
Frequency hop sequences control the secondary service area to change the operating frequency of the secondary service area, wherein the virtual frequency area maintains not
Become, and the actual frequency area changes into another in the multiple actual frequency area with each frequency hopping.
2. according to the method described in claim 1, wherein the frequency hop sequences include:
In one first period, operate under the first carrier frequency in the unlicensed spectrum；
In one second period after and then first period, one second carrier wave in the unlicensed spectrum is operated
Under frequency；And
In a third period after and then second period, the third carrier wave in the unlicensed spectrum is operated
Under frequency.
3. according to the method described in claim 1, wherein transmitting the frequency hop sequences to the secondary service area and including:
Transmitting includes a control signal message of the frequency hop sequences to the secondary service area, wherein the control signal message system
Using a specific temporary identification code of radio net, passed by an entity downlink control channel of the primary service area
It passs.
4. according to the method described in claim 1, the frequency hop sequences for wherein configuring the virtual frequency area include:
Execute the carrier sense of multiple carrier waves in the unlicensed spectrum；And
The carrier sense for executing the carrier wave in the unlicensed spectrum is reacted on, the frequency hop sequences are configured.
5. according to the method described in claim 1, further include:
Another control signal message is transmitted to open or close the control secondary service area according to the frequency hop sequences and operate.
6. a kind of wireless communications method in a unlicensed spectrum is suitable for user's equipment, which comprises
A primary service area is linked in an authorization frequency spectrum；
A service area is linked in the unlicensed spectrum；
A control signal message is received by the primary service area to operate the virtual frequency area in the secondary service area；
A frequency hop sequences in the virtual frequency area are received from the control signal message；And
According to frequency hop sequences operation in the virtual frequency area, wherein the virtual frequency area be mapped to it is multiple true
Frequency zones, the virtual frequency area have a unique virtual frequency area identification code, and each actual frequency area has a uniqueness
Actual frequency area identification code, and operated according to the frequency hop sequences and in the step of virtual frequency area include:
According to the change of virtual frequency area identification code and the mapping relations of the multiple actual frequency area identification code come basis
The frequency hop sequences operation is in the virtual frequency area, wherein the virtual frequency area remains unchanged, and the true frequency
Rate area changes into another in the multiple actual frequency area with each frequency hopping.
7. according to the method described in claim 6, wherein the frequency hop sequences include:
In one first period, operate under the first carrier frequency in the unlicensed spectrum；
In one second period after and then first period, one second carrier wave in the unlicensed spectrum is operated
Under frequency；And
In a third period after and then second period, the third carrier wave in the unlicensed spectrum is operated
Under frequency.
8. according to the method described in claim 6, wherein receiving the institute in the virtual frequency area from the control signal message
Stating frequency hop sequences includes:
According to a specific temporary identification code of radio net, connect by an entity downlink control channel of the primary service area
Receive the control signal message.
9. according to the method described in claim 6, further include:
Execute the carrier sense of multiple carrier waves in the unlicensed spectrum；And
After executing the channel clearance assessment of the multiple carrier wave in the unlicensed spectrum, in the unlicensed spectrum
A workable carrier frequency is selected in the middle.
10. according to the method described in claim 6, further include:
Another control signal message is received to open or close control according to the frequency hop sequences and operate in the virtual frequency area
In.
11. a kind of user's equipment, comprising:
One wireless transceiver；And
One processor, is coupled to the wireless transceiver, and at least to:
In an authorization frequency spectrum, a primary service area is connected to by the wireless transceiver；
In a unlicensed spectrum, a service area is connected to by the wireless transceiver；
One control signal message is received to operate in the secondary service area by the primary service area with the wireless transceiver
One virtual frequency area；
A frequency hop sequences in the virtual frequency area are received from control signal message with the wireless transceiver；And
According to frequency hop sequences operation in the virtual frequency area, wherein the virtual frequency area be mapped to it is multiple true
Frequency zones, the virtual frequency area have a unique virtual frequency area identification code, and each actual frequency area has a uniqueness
Actual frequency area identification code, and in the virtual frequency area include: according to frequency hop sequences operation
Using the mapping relations for changing virtual frequency area identification code and the multiple actual frequency area identification code, according to described
Frequency hop sequences control the secondary service area to change the operating frequency of the secondary service area, wherein the virtual frequency area maintains not
Become, and the actual frequency area changes into another in the multiple actual frequency area with each frequency hopping.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201562200131P | 2015-08-03 | 2015-08-03 | |
| US62/200,131 | 2015-08-03 | ||
| US15/078,855 | 2016-03-23 | ||
| US15/078,855 US20170041042A1 (en) | 2015-08-03 | 2016-03-23 | Method of wireless communication in unlicensed spectrum and related apparatus using the same |
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| CN106413044A CN106413044A (en) | 2017-02-15 |
| CN106413044B true CN106413044B (en) | 2019-08-27 |
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| CN201610452131.2A Active CN106413044B (en) | 2015-08-03 | 2016-06-21 | In the wireless communications method and its user's equipment of unlicensed spectrum |
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| CN111034311B (en) * | 2017-09-23 | 2021-07-20 | 华为技术有限公司 | Data transmission method and equipment on unlicensed spectrum |
| CN109039374B (en) * | 2018-07-02 | 2020-04-07 | 北京交通大学 | Method for realizing coexistence of LTE-LAA system and WiFi system on unauthorized frequency band |
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| US8675605B2 (en) * | 2011-06-02 | 2014-03-18 | Broadcom Corporation | Frequency hopping in license-exempt/shared bands |
| US9801115B2 (en) * | 2013-09-04 | 2017-10-24 | Qualcomm Incorporated | Robust inter-radio access technology operations in unlicensed spectrum |
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