CN105517026B - The method and apparatus for carrying out exempting from grant channel selection in communication system - Google Patents
The method and apparatus for carrying out exempting from grant channel selection in communication system Download PDFInfo
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- CN105517026B CN105517026B CN201410502595.0A CN201410502595A CN105517026B CN 105517026 B CN105517026 B CN 105517026B CN 201410502595 A CN201410502595 A CN 201410502595A CN 105517026 B CN105517026 B CN 105517026B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
Provide the method and apparatus for exempt from grant channel selection.First, it is determined whether receive the channel selection indication signaling from one or more neighboring communities；If it is not, then carrying out energy measuring to multiple grant channels to be selected of exempting from, and the channel that wherein energy detection results are less than predetermined threshold is determined as one or more can be used and exempts from grant channel；If it is, measuring the interference strength of the one or more neighboring community；And interference strength and channel selection indication signaling based on each neighboring community, from it is multiple it is to be selected exempt to determine in grant channel one or more alternatively exempt from grant channel；Alternatively exempt from grant channel to the one or more and carries out energy measuring；The channel that wherein energy detection results are less than predetermined threshold is determined as one or more can be used and exempts from grant channel；Based on pre-defined rule, from the one or more is available exempt from that at least one target is selected to exempt from grant channel in grant channel, and row broadcast/unicast is selected by the first channel selection indication signaling.
Description
Technical field
The present invention relates to the method and apparatus for carrying out exempting from grant channel selection in communication system more particularly to communication system.
Background technique
Traditional LTE is deployed in licensed band, and in licensed band, frequency spectrum is technically retained.This may insure more
Good quality of service (QoS) and more effective spectrum utilization.However, the licensed band for LTE system is very limited, especially
The valuable frequency band with low transmission loss lower than 6GHz.On the other hand, the rapidly growth of data service is brought to movement
The demand that the huge capacity of broadband system increases.Therefore, operator begins to try using licensed band is exempted from, so as to be license
Frequency band unload certain data service.Compared to the WiFi technology exempted from licensed band is had been deployed in, exempting from licensed band
Middle deployment LTE (hereinafter referred to as " LTE-U ") can more effectively manage interference and more steadily reply load and user are close
The variation of degree.
For LTE-U, it is contemplated that three kinds of configuration scenes:
Scene I: exempting from the carrier wave that licensed band is used as supplement, polymerize by ideal passback with license carrier wave (for example,
Same base or co-siting base stations).
Scene II: exempting from the carrier wave that licensed band is used as supplement, passes through non-ideal passback and license carrier set (example
Such as, with the dual link of macrocell and picocell).
Scene III: exempt from licensed band and helped for failing in individual mode from license carrier wave.
For above-mentioned scene I and II, help and/or control information can be obtained from license carrier wave.
As the first step of LTE-U, need from it is multiple it is obtainable exempt from grant channel carry out channel selection so that phase
Different channels is used between adjacent cell as far as possible, to limit LTE-U and LTE-U (including between same operator and not
With operator between) between and the interference between LTE-U and WiFi.In general, Federal Communications Committee (FCC) manages WiFi
Available whole 22MHz channel, wherein 9 channels do not need DFS, and 13 channels need DFS to support.Therefore, LTE-U can be with
It selects multiple ready for use to exempt from grant channel.It is desirable that if LTE-U observe in the current channel from its is neighbouring
The very strong interference of WiFi/LTE-U cell, then it can select the channel of " clean " based on measurement.
Due to not coordinating between neighboring community, the LTE-U between different operators has to rely on Channel Detection
Determine which channel can be used and which channel cannot use with the service conditions of variation.In addition, in order to avoid channel
By the strong jamming from WiFi, LTE-U needs coexist with WiFi.Disturbance level in the channel can by energy measuring come
Measurement.However, such channel selection is not largely effective for the LTE-U between same operator, reason is as follows:
In view of using " listem-before-talk " (listen-before-talk) mode in LTE-U, base station may not necessarily exist
Selected channel data are to avoid the interference from adjacent WiFi/LTE-U cell.Therefore, pass through energy measuring
The interference measured possibly can not reflect the real channel selection situation of neighboring community, so that base station/user equipment may
It can select to be exempted from grant channel by strongly disturbing from other neighboring communities or other neighboring communities be caused strongly disturbing
Exempt from grant channel.
When channel is detected in idle state, due to not coordinating between neighboring community, multiple adjacent small
Area may select the same idle channel to carry out data transmission, this may cause channel confliction.
Therefore, it is necessary to provide a kind of new scheme for exempting from grant channel selection for LTE-U.
Summary of the invention
It is an object of the present invention to different cells is chosen to be not exposed to from adjacent LTE-U cell
Exempt from grant channel with the interference of WiFi access point.
In order to realize the goal of the invention, basic conception of the invention is: proposing two-stage channel selection profile.First
Grade, from multiple neighboring interfering cells LTE-U to be selected for exempting to remove same operator in grant channel it is selected exempt from grant channel,
So that it is determined that one or more alternatively exempt from grant channel；In the second level, further identified one or more alternatively is exempted to be permitted
Can channel carry out energy measuring, thus alternatively exempt from from one or more in grant channel determine at least one target exempt from permit believe
Road, the purpose of the second level channel selection are to remove the total of the neighboring interfering cell LTE-U from different operators and WiFi
Interference.
Based on this, according to an aspect of the present invention, it proposes a kind of in the cell of communication system for carrying out exempting to be permitted
Can channel selection method, the described method comprises the following steps:
Determine whether to receive the channel selection indication signaling from one or more neighboring communities；
If not receiving one or more channel selection indication signalings from one or more neighboring communities, hold
Row following steps:
Energy measuring is carried out to multiple grant channels to be selected of exempting from respectively；
To be selected exempt from grant channel energy detection results by the multiple and be determined as less than the channel of the first predetermined threshold
One or more is available to exempt from grant channel；
If receiving one or more channel selection indication signalings from one or more neighboring communities, execute
Following steps:
The interference strength of one or more of neighboring communities is measured respectively；
Interference strength based on each neighboring community in one or more of neighboring communities and correspond to each phase
The channel selection indication signaling of adjacent cell, from it is the multiple it is to be selected exempt to determine in grant channel one or more alternatively exempt from license letter
Road；
Energy measuring is carried out to one or more of grant channels of alternatively exempting from respectively；
Alternatively exempt from grant channel energy detection results less than the channel of the second predetermined threshold for one or more of
It is determined as one or more can be used and exempts from grant channel；
It is based on pre-defined rule, from one or more of can be used exempts from that at least one target is selected to exempt to permit in grant channel
Channel；
The first channel selection indication signaling of broadcast sends the choosing of the first channel to the neighboring community for not carrying out channel selection
Indication signaling is selected, the first channel selection indication signaling is used to indicate at least one selected described target of this cell and exempts to be permitted
It can channel.
Advantageously, the method also includes following steps:
When predetermined condition obtains meeting, to be selected exempt to reselect at least one target in grant channel from the multiple
Exempt from grant channel.
Advantageously, the predetermined condition meets to obtain satisfaction to include any one of following:
Exempt from grant channel with the target of neighboring community's selection mutually to conflict；
Currently selected target exempts from grant channel and is constantly in busy state.
Advantageously, the pre-defined rule includes: traffic load.
It is advantageously based on the interference strength of each neighboring community in one or more of neighboring communities and corresponds to this
The channel selection indication signaling of each neighboring community, from it is the multiple it is to be selected exempt from grant channel determine one or more alternatively exempt from
The step of grant channel includes:
Based on the interference strength of each neighboring community, obtain in each neighboring community interference strength be greater than it is predetermined
The set of the cell of interference threshold；
Based on the channel selection indication signaling of each neighboring community, by each cell institute in the set of the cell
The target of selection exempt from grant channel from it is the multiple it is to be selected exempt to remove in grant channel, alternatively exempt from so that determination is one or more of
Grant channel.
Advantageously, the first channel selection indication signaling indicates this cell selected described at least one using bitmap
A target exempts from grant channel.
According to another aspect of the present invention, propose it is a kind of in the cell of communication system for carrying out exempting from grant channel
The method of selection, the cell configure its administrative one or more user equipment and carry out channel measurement, the method includes with
Lower step:
Determine whether to receive one or more channel selection indication signalings from one or more neighboring communities
If not receiving one or more channel selection indication signalings from one or more neighboring communities, hold
Row following steps:
One or more idle channels instruction from one or more of user equipmenies is received respectively, it is one
Or each idle channel instruction in multiple idle channel instructions is used to indicate the user equipment corresponding to idle channel instruction
It is measured it is multiple it is to be selected exempt from grant channel available exempt from grant channel；
Based on one or more of idle channels indicate, from it is the multiple it is to be selected exempt from grant channel determine this cell
One or more available exempt from grant channel；
If receiving one or more channel selection indication signalings from one or more neighboring communities, execute
Following steps:
The cell ID of one or more of neighboring communities is sent to each in one or more of user equipmenies
A user equipment；
It receives by the one or more of adjacent of each user equipment feedback in one or more of user equipmenies
The interference strength of cell；
One or more idle channels instruction from one or more of user equipmenies is received respectively, it is one
Or each idle channel instruction in multiple idle channel instructions is used to indicate the user equipment corresponding to idle channel instruction
Measured multiple free time to be selected exempted from grant channel exempt from grant channel；
Based on by the one or more of adjacent of each user equipment feedback in one or more of user equipmenies
The interference strength of cell, corresponding to each neighboring community in the one or more neighboring community channel selection indication signaling and
Receive one or more of idle channels instruction, from it is the multiple it is to be selected exempt from grant channel determine one or more can
With exempting from grant channel；
It is based on pre-defined rule, from one or more of can be used exempts from that at least one target is selected to exempt to permit in grant channel
Channel；
The first channel selection indication signaling of broadcast sends the choosing of the first channel to the neighboring community for not carrying out channel selection
Indication signaling is selected, the first channel selection indication signaling is used to indicate at least one selected described target of this cell and exempts to be permitted
It can channel.
It is advantageously based on the instruction of one or more of idle channels, to be selected exempts to determine in grant channel from the multiple
The one or more of this cell available the step of exempting from grant channel includes:
Determine the indicated common idle channel of one or more of idle channel instructions；
One or more of can be used that the common idle channel is determined as this cell is exempted from into grant channel.
It is advantageously based on by the one or more of each user equipment feedback in one or more of user equipmenies
The interference strength of a neighboring community, corresponding in the one or more neighboring community each neighboring community channel selection indicate letter
Enable and receive one or more of idle channels instruction, from it is the multiple it is to be selected exempt from grant channel determine one or
Multiple available the step of exempting from grant channel include:
The interference strength of one or more of neighboring communities based on each user equipment feedback, determine described in
The interference strength of each neighboring community in one or more neighboring communities；
Based on the interference strength of each neighboring community, obtain in each neighboring community interference strength be greater than it is predetermined
The set of the cell of interference threshold；
Based on the channel selection indication signaling of each neighboring community, by each cell institute in the set of the cell
The target of selection exempt from grant channel from it is the multiple it is to be selected exempt to remove in grant channel, alternatively exempt from so that determination is one or more of
Grant channel；
Determine the indicated common idle channel of one or more of idle channel instructions；
Alternatively exempt from grant channel and the common idle channel based on one or more of, determines this cell
One or more of can be used exempts from grant channel.
According to another aspect of the present invention, propose it is a kind of in the user equipment of communication system for supplementary cell into
The method that row exempts from grant channel selection, the described method comprises the following steps:
Energy measuring is carried out to multiple grant channels to be selected of exempting from respectively；
To be selected exempt from energy detection results in grant channel and be less than the channel of predetermined threshold to be determined as the free time by the multiple
Exempt from grant channel；
It sends idle channel and indicates that the cell, the idle channel instruction is used to indicate measured by this user equipment
To the multiple free time to be selected exempted from grant channel exempt from grant channel.
Advantageously, the method also includes following steps:
The cell ID of one or more neighboring communities is received from the cell；
Based on the cell ID of one or more of neighboring communities, one or more of neighboring communities are measured respectively
Interference strength；
The interference strength of one or more of neighboring communities is sent to the cell.
According to another aspect of the present invention, propose it is a kind of in the cell of communication system for carrying out exempting from grant channel
The method of selection, the cell configure its administrative one or more user equipment and carry out channel measurement, the method includes with
Lower step:
Determine whether to receive one or more channel selection indication signalings from one or more neighboring communities
If not receiving one or more channel selection indication signalings from one or more neighboring communities, hold
Row following steps:
One or more idle channels instruction from one or more of user equipmenies is received respectively, it is one
Or each idle channel instruction in multiple idle channel instructions is used to indicate the user equipment corresponding to idle channel instruction
It is measured it is multiple it is to be selected exempt from grant channel available exempt from grant channel；
Based on one or more of idle channels indicate, from it is the multiple it is to be selected exempt from grant channel determine this cell
One or more available exempt from grant channel；
If receiving one or more channel selection indication signalings from one or more neighboring communities, execute
Following steps:
One or more of channel selection indication signalings are sent to each in one or more of user equipmenies
User equipment；
The one or more idle channels fed back by one or more of user equipmenies are received to indicate, it is one or
Each idle channel instruction in multiple idle channel instructions is used to indicate the user equipment institute corresponding to idle channel instruction
The available of selection exempts from grant channel；
It is indicated based on one or more of idle channels, determines that the one or more of this cell is available and exempt from grant channel；
It is based on pre-defined rule, from one or more of can be used exempts from that at least one target is selected to exempt to permit in grant channel
Channel；
The first channel selection indication signaling of broadcast sends the choosing of the first channel to the neighboring community for not carrying out channel selection
Indication signaling is selected, the first channel selection indication signaling is used to indicate at least one selected described target of this cell and exempts to be permitted
It can channel.
According to another aspect of the present invention, propose it is a kind of in the user equipment of communication system for supplementary cell into
The method that row exempts from grant channel selection, the described method comprises the following steps:
It receives and is indicated by the one or more channel selections for corresponding to one or more neighboring communities that the cell is sent
Signaling；
The interference strength of one or more of neighboring communities is measured respectively；
Interference strength based on each neighboring community in one or more of neighboring communities and correspond to each phase
The channel selection indication signaling of adjacent cell, from it is the multiple it is to be selected exempt to determine in grant channel one or more alternatively exempt from license letter
Road；
Energy measuring is carried out to one or more of grant channels of alternatively exempting from；
By one or more of channel determinations alternatively exempted from energy detection results in grant channel and be less than predetermined threshold
Exempt from grant channel to be available；
It sends idle channel and indicates that the cell, the idle channel instruction is used to indicate this user equipment and is determined
Available exempt from grant channel.
Various aspects of the invention will be more clear by the explanation of embodiment in detail below.
Detailed description of the invention
By reading a detailed description of non-restrictive embodiments in the light of the attached drawings below, of the invention other
Feature, objects and advantages will become more apparent:
Fig. 1 shows LTE-U communication system schematic diagram according to an embodiment of the invention；
Fig. 2 shows according to an embodiment of the invention to carry out exempting from grant channel selection in LTE-U communication system
Method flow diagram；
Fig. 3 shows the grant channel that carries out exempting from LTE-U communication system according to another embodiment of the invention and selects
The method flow diagram selected.
Same or similar appended drawing reference indicates identical or corresponding component or feature in the figure.
Specific embodiment
Fig. 1 shows illustrative LTE-U system, including 3 LTE-U cells, respectively cell 1,2 He of cell
Cell 3 and 1 WLAN access point.Cell 1 and cell2 belongs to the same operator A, and cell 3 belongs to another operation
Quotient B.Cell 1 administrative user equipment (UE) 1, the administrative user equipment (UE) 2 of cell 2, cell 3 administrative user equipment (UE)
The administrative user equipment (UE) 4 of 3, WLAN access points.It is understood that LTE-U cell shown by the LTE-U system of Fig. 1/
The number of WLAN access point is merely exemplary and not restrictive, and those of ordinary skill in the art could be aware that, LTE-U system
In include number of cells be not limited to 3.Likewise, number of user equipment administrative below each cell/WLAN access point
It is also not limited to 1.
Referring to Fig. 2 and Fig. 3 and Fig. 1 is combined, various embodiments of the present invention are described in detail.Illustratively, with
Cell 1 first carries out exempting from grant channel selection, for carrying out exempting from grant channel selection after cell 2.
In step s 201, cell 1 determines whether to receive the channel selection from neighboring community (that is, cell 2)
Indication signaling.Since cell 1 carries out exempting from grant channel selection before cell 2, cell 1 is not received from adjacent small
The channel selection indication signaling in area.
It should be noted that X2 can be passed through by belonging in current LTE-U system between the cell of an operator
Interface carries out Signalling exchange, and Signalling exchange can not be carried out by belonging between the cell of different operators.Therefore, channel selection indicates
Signaling can be sent by X2 interface.
Since cell 1 does not receive the channel selection indication signaling from neighboring community, then, in step S202, cell
1 carries out energy measuring to multiple grant channels to be selected of exempting from respectively.Then, in step S203, cell 1 to be selected exempts to be permitted by multiple
Energy detection results it can be determined as one or more available exempting from grant channel less than the channel of the first predetermined threshold in channel.Example
Such as, carrying out energy measuring to channel can be the reception power of measurement channel.
Then, in step S204, cell 1 is based on pre-defined rule, exempts from license letter from identified one or more can be used
At least one target is selected to exempt from grant channel in road.The pre-defined rule can be for example, traffic load.
Then, in step S205, cell 1 broadcasts the first channel selection indication signaling or to not carrying out channel selection
Neighboring community (that is, cell 2) unicast the first channel selection indication signaling.The first channel selection indication signaling is for referring to
Show that at least one the selected target of cell 1 exempts from grant channel.It is understood that as described above, cell 1 can for example lead to
It crosses X2 interface and sends the first channel selection indication signaling.It can be in addition, cell 1 sends the first channel selection indication signaling
Periodically or based on event triggering.
The first channel selection indication signaling can realize instruction cell 1 selected at least one in several ways
It is a to exempt from grant channel.For example, can be indicated by using bitmap cell1 it is selected at least one exempt from grant channel.
Herein, by taking the number to be selected for exempting from grant channel is equal to 10 as an example, then, the length of bitmap (bitmap) is equal to
10, wherein indicating that selected target exempts from grant channel with 1, indicate that not selected target exempts from grant channel with 0.Assuming that the 4th,
5,7, which exempt from grant channel, is selected, then, bitmap is " 0001101000 ".Cell 2 receives the first channel characterized with bitmap
After selecting indication signaling, i.e., which knowable cell 1 selected exempt from grant channel.
For cell 2, it is also required to determine whether to receive the channel from neighboring community (that is, cell 1)
Indication signaling is selected, since it receives the first channel selection indication signaling from cell 1, then, in step S206,
Cell 2 measures the dry of the neighboring community (that is, cell 1) corresponding to received first channel selection indication signaling respectively
Disturb intensity.For example, cell 2 can measure the Reference Signal Received Power (RSRP) of cell 1, thus obtain cell 1 to its
Interference strength.
Then, in step S207, cell 2 based on neighboring community each in neighboring community interference strength (that is,
The interference strength of cell 1) and channel selection indication signaling corresponding to each neighboring community (that is, from cell's 1
First channel selection indication signaling), from it is multiple it is to be selected exempt to determine in grant channel one or more alternatively exempt from grant channel.
Cell 2 can in several ways from it is multiple it is to be selected exempt to determine in grant channel one or more alternatively exempt to permit
Channel.For example, cell 2 is primarily based on the interference strength of each neighboring community, it is big to obtain interference strength in each neighboring community
In the set of the cell of predetermined interference threshold；Then, the channel selection indication signaling based on each neighboring community, will be described
The selected target of each cell in the set of cell exempt from grant channel from it is multiple it is to be selected exempt to remove in grant channel, with determine one
It is a or multiple alternatively exempt from grant channel.If the interference strength of cell 1 is greater than predetermined interference threshold, cell 1 is placed into
In the set of the cell, then cell 2 will be selected by the cell 1 that indicated in the first channel selection indication signaling of cell 1
The grant channel of exempting from selected removes (that is, the 4th, 5,7 is exempted from grant channel removal) from multiple grant channels to be selected, so that it is determined that
Alternatively exempting from grant channel is the 1st, 2,3,6,8,9,10.If the interference strength of cell 1 is not more than predetermined interference threshold, anticipate
Taste the collection of the cell be combined into sky, then all multiple grant channels to be selected of exempting from can be determined as alternatively exempting to permit by cell 2
Channel.
Then, in step S208, cell 2 carries out energy to identified one or more grant channels of alternatively exempting from respectively
Amount detection, and it is true less than the channel of the second predetermined threshold that the one or more is alternatively exempted to energy detection results in grant channel
It is set to one or more can be used and exempts from grant channel.It is understood that the step is in order to will likely be by from different fortune
Those of adjacent LTE-U cell and the interference of WiFi access point for seeking quotient exempt from grant channel and alternatively exempt to permit from the one or more
It is removed in channel.
Then, in step S209, cell 2 is based on pre-defined rule, exempts from license letter from identified one or more can be used
At least one target is selected to exempt from grant channel in road.The pre-defined rule can be for example, traffic load.
Finally, in step S210, cell 2 broadcasts the first channel selection indication signaling or to not carrying out channel selection
Neighboring community's unicast the first channel selection indication signaling.The first channel selection indication signaling is used to indicate selected by cell 2
At least one target exempt from grant channel.Since the neighboring community cell 1 for belonging to an operator of cell 2 has been carried out
Channel selection, therefore, cell 2 can not also send the first channel selection indication signaling.
Advantageously, cell 1 and cell 2 to be selected can also exempt from grant channel from multiple when predetermined condition obtains meeting
In reselect at least one target and exempt from grant channel.The predetermined condition can be for example, exempting from the target of neighboring community's selection
Grant channel mutually conflicts or currently selected target exempts from grant channel and is constantly in busy state.
In the above-described embodiments, it is to execute Interference Detection by cell, and in the examples below, interference inspection will be carried out with UE
It is illustrated for survey.
Similarly, first carry out exempting from grant channel selection with cell 1, for carrying out exempting from grant channel selection after cell 2.
Cell 1 configures its administrative user equipment (UE) 1 and carries out channel measurement, and cell 2 configures its administrative user equipment (UE) 2 and carries out
Channel measurement.
In step S301, cell 1 determines whether to receive the channel selection from neighboring community (that is, cell 2)
Indication signaling.Since cell 1 carries out exempting from grant channel selection before cell 2, cell 1 is not received from adjacent small
The channel selection indication signaling in area.
In step s 302, cell 1 administrative UE 1 carries out energy measuring to multiple grant channels to be selected of exempting from respectively, and
To be selected exempt from energy detection results in grant channel and be less than the channel of predetermined threshold to be determined as the free time and exempt from grant channel by multiple.
Then, in step S303, UE 1 sends idle channel and indicates to cell 1, and idle channel instruction is used to indicate
Multiple free time to be selected exempted from grant channel measured by UE 1 exempt from grant channel.
After cell 1 receives the instruction of the idle channel from UE 1, in step s 304, based on the received free time
Channel instruction exempts from grant channel from multiple one or more to be selected for exempting from determining cell 1 in grant channel are available.
It is understood that if cell 1 also configures its administrative other users equipment and carries out channel measurement,
Cell 1 can also receive the instruction of the idle channel from other users equipment.When cell 1 receives multiple idle channel instructions
Afterwards, firstly, the indicated common idle channel of multiple idle channel instruction is determined, then by these common idle channels
The one or more for being determined as cell1, which can be used, exempts from grant channel.
Then, in step S305, cell 1 is based on pre-defined rule, exempts from license letter from identified one or more can be used
At least one target is selected to exempt from grant channel in road.The pre-defined rule can be for example, traffic load.
Then, in step S306, cell 1 broadcasts the first channel selection indication signaling or to not carrying out channel selection
Neighboring community (that is, cell 2) unicast the first channel selection indication signaling.The first channel selection indication signaling is for referring to
Show that at least one the selected target of cell 1 exempts from grant channel.It is understood that as described above, cell 1 can for example lead to
It crosses X2 interface and sends the first channel selection indication signaling.It can be in addition, cell 1 sends the first channel selection indication signaling
Periodically or based on event triggering.
For cell 2, it is also required to determine whether to receive the channel from neighboring community (that is, cell 1)
Indication signaling is selected, since it receives the first channel selection indication signaling from cell 1, then, in step S307,
The cell ID of neighboring community cell 1 is sent to UE 2 by cell 2.It is understood that being come from if cell 2 is received
First channel selection indication signaling of multiple neighboring communities, then cell 2 can send out the cell ID of multiple neighboring community
It send to UE 2.It can also be appreciated that if cell 2 also configures its administrative other users equipment and carries out channel measurement, that
Cell 1 can also be by the cell ID of each neighboring community corresponding to received first channel selection indication signaling point
It is not sent to multiple user equipment.
After UE 2 receives the cell ID of cell 1, in step S308, the interference strength of cell 1 is measured, and will
The interference strength of cell 1 is sent to cell 2.It is understood that if UE 2 receives the cell mark of multiple neighboring communities
Know, then UE 2 can measure the interference strength of these neighboring communities respectively, and the interference strength of these neighboring communities is fed back to
cell2.It is understood that the interference strength that UE 2 feeds back to cell 2 can be the numerical value of interference strength size itself, or
Person indicates whether interference strength is greater than the instruction information of predetermined interference threshold.
In addition, UE 2 also carries out energy measuring to multiple grant channels to be selected of exempting from, and will be multiple to be selected in step S309
Exempt from energy detection results in grant channel and be less than the channel of predetermined threshold to be determined as the free time and exempt from grant channel.Then, in step
In S310, UE 2 sends idle channel and indicates to cell 2, and idle channel instruction is used to indicate multiple measured by UE 2
The free time to be selected exempted from grant channel exempts from grant channel.
After cell 2 receives interference strength and the idle channel instruction about cell 1 from UE 2, in step
In S311, interference strength, idle channel instruction and the channel selection received before from cell 1 based on cell 1 are indicated
Signaling, from it is multiple it is to be selected exempt to determine in grant channel one or more available exempt from grant channel.
Certainly, if cell 2 also receive from its administrative other users equipment about cell 1 (one or
Multiple neighboring communities) interference strength and idle channel instruction, then, these information from different user devices will be comprehensive
Consider together altogether for from it is multiple it is to be selected exempt to determine in grant channel one or more available exempt from grant channel.Example
Such as, cell 2 is primarily based on the interference strength of one or more neighboring communities of each user equipment feedback, determines one or more
The interference strength of each neighboring community in a neighboring community；Then, it is each to obtain this for the interference strength based on each neighboring community
Interference strength is greater than the set of the cell of predetermined interference threshold in a neighboring community；Then, the letter based on each neighboring community
Road selects indication signaling, and the selected target of each cell in the set of the cell is exempted from grant channel from the multiple to be selected
Exempt to remove in grant channel, alternatively exempts from grant channel so that determination is one or more of；Then, it is determined that one or more idle letters
The indicated common idle channel of road instruction；Finally, alternatively exempting from grant channel and institute based on identified one or more
Determining common idle channel determines that the one or more of cell 2 is available and exempts from grant channel.
Then, in step S312, cell 2 is based on pre-defined rule, exempts from license letter from identified one or more can be used
At least one target is selected to exempt from grant channel in road.The pre-defined rule can be for example, traffic load.
Finally, in step S313, cell 2 broadcasts the first channel selection indication signaling or to not carrying out channel selection
Neighboring community's unicast the first channel selection indication signaling.The first channel selection indication signaling is used to indicate selected by cell 2
At least one target exempt from grant channel.Since the neighboring community cell 1 for belonging to an operator of cell 2 has been carried out
Channel selection, therefore, cell 2 can not also send the first channel selection indication signaling.
Advantageously, cell 1 and cell 2 to be selected can also exempt from grant channel from multiple when predetermined condition obtains meeting
In reselect at least one target and exempt from grant channel.The predetermined condition can be for example, exempting from the target of neighboring community's selection
Grant channel mutually conflicts or currently selected target exempts from grant channel and is constantly in busy state.
It is understood that in another embodiment, cell 2 is receiving the first channel selection from cell 1
After indication signaling, the first channel selection indication signaling directly can be sent to UE 2.UE 2 receives first channel choosing
After selecting indication signaling, the first channel selection of measurement result and cell 1 based on the interference strength to cell 1 indicates letter
Enable, from it is multiple it is to be selected exempt to determine in grant channel one or more alternatively exempt from grant channel；Then, then it is standby to the one or more
Choosing exempts from grant channel and carries out energy measuring to determine can be used and exempt from grant channel；It indicates finally, UE 2 sends idle channel to cell
2, idle channel instruction is used to indicate determined by UE 2 can be with exempting from grant channel.Correspondingly, cell 2 is received from UE
It after 2 idle channel instruction, is indicated based on the idle channel, determines that the one or more of cell 2 is available and exempt from grant channel.So
Afterwards, cell 2 is based on pre-defined rule, from the one or more is available exempts from that at least one target is selected to exempt from license letter in grant channel
Road.
In one or more exemplary designs, this can be realized with hardware, software, firmware or their any combination
The application function.If realized with software, can be stored the function as one or more instruction or code
On a computer-readable medium, or as on computer-readable medium one or more instructions or code transmit.It calculates
Machine readable medium includes computer storage media and communication media, and wherein communication media includes facilitating computer program from one
Place is transmitted to the arbitrary medium of another place.Storage medium can be general or specialized computer-accessible any available
Medium.This computer-readable medium may include, such as, but not limited to, RAM, ROM, EEPROM, CD-ROM or other CDs
Store equipment, disk storage equipment or other magnetic storage apparatus, either can be used for general or specialized computer or it is general or
The form of the addressable instruction of application specific processor or data structure come code modules desired by carrying or store it is any its
Its medium.Also, it is any to connect the computer-readable medium that be known as.For example, if software be using coaxial cable,
The wireless technology of optical fiber cable, twisted pair, Digital Subscriber Line (DSL) or such as infrared ray, radio and microwave etc is come from net
It stands, server or other remote sources transmission, then coaxial cable, optical fiber cable, twisted pair, DSL or such as infrared ray, wireless
The wireless technology of electricity and microwave etc is also included in the definition of medium.
General processor, digital signal processor (DSP), specific integrated circuit (ASIC), field programmable gate can be used
Array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components or for executing sheet
Any combination of function described in text come realize or execute combine the disclosure described in various illustrative logical blocks, module and
Circuit.General processor can be microprocessor, alternatively, processor is also possible to any conventional processor, controller, micro-control
Device or state machine processed.Processor also can be implemented as calculating the combination of equipment, for example, the combination of DSP and microprocessor, multiple
The combination or any other such structure of microprocessor, one or more microprocessors and DSP core.
Those of ordinary skill in the art should also understand that, the various illustrative logics described in conjunction with embodiments herein
The combination of electronic hardware, computer software or both may be implemented into block, module, circuit and algorithm steps.In order to understand earth's surface
Show this interchangeability between hardware and software, various illustrative components, block, module, circuit and step are enclosed above
General description has been carried out around its function.Hardware is implemented as this function and is also implemented as software, is depended on specific
Using and apply design constraint over the whole system.Those skilled in the art can be directed to every kind of specific application, to become
Logical mode realizes described function, and still, this realization decision should not be interpreted as causing a departure from the scope of this disclosure.
The above description of the disclosure is for can be realized any those of ordinary skill of this field or using the present invention.It is right
For those of ordinary skill in the art, the various modifications of the disclosure be will be apparent from, and generality defined herein
Principle can also be applied to other deformations in the case where without deviating from the spirit and scope of the disclosed invention.Therefore, the present invention is simultaneously
It is not limited to example and design as described herein, but it is consistent with the widest scope of principle disclosed herein and novel features.
Claims (14)
1. a kind of method in the cell of communication system for exempt from grant channel selection, the method includes following steps
It is rapid:
Determine whether to receive the channel selection indication signaling from one or more neighboring communities；
If not receiving one or more channel selection indication signalings from one or more neighboring communities, execute with
Lower step:
Energy measuring is carried out to multiple grant channels to be selected of exempting from respectively；
To be selected exempt from grant channel energy detection results by the multiple and be determined as one less than the channel of the first predetermined threshold
Or multiple can be used exempts from grant channel；
If receiving one or more channel selection indication signalings from one or more neighboring communities, execute following
Step :-interference strengths of one or more of neighboring communities is measured respectively；
Interference strength based on each neighboring community in one or more of neighboring communities and to correspond to this each adjacent small
The channel selection indication signaling in area, from it is the multiple it is to be selected exempt to determine in grant channel one or more alternatively exempt from grant channel；
Energy measuring is carried out to one or more of grant channels of alternatively exempting from respectively；
Alternatively exempt from energy detection results in grant channel by one or more of and determined less than the channel of the second predetermined threshold
Exempt from grant channel for one or more is available；
It is based on pre-defined rule, from one or more of can be used exempts from that at least one target is selected to exempt from grant channel in grant channel；
The first channel selection indication signaling of broadcast refers to neighboring community's the first channel selection of transmission for not carrying out channel selection
Show signaling, the first channel selection indication signaling is used to indicate at least one selected described target of this cell and exempts from license letter
Road.
2. the method according to claim 1, wherein the method also includes following steps:
When predetermined condition obtains meeting, from it is the multiple it is to be selected exempt to reselect at least one target in grant channel exempt to be permitted
It can channel.
3. according to the method described in claim 2, the predetermined condition meets to obtain satisfaction to include any one of following:
Exempt from grant channel with the target of neighboring community's selection mutually to conflict；
Currently selected target exempts from grant channel and is constantly in busy state.
4. the method according to claim 1, wherein the pre-defined rule includes: traffic load.
5. the method according to claim 1, wherein based on each adjacent in one or more of neighboring communities
The interference strength of cell and channel selection indication signaling corresponding to each neighboring community to be selected exempt to permit from the multiple
Determine that one or more the step of alternatively exempting from grant channel include: in channel
Based on the interference strength of each neighboring community, obtains interference strength in each neighboring community and be greater than predetermined interference
The set of the cell of threshold value；
It, will be selected by each cell in the set of the cell based on the channel selection indication signaling of each neighboring community
Target exempt from grant channel from it is the multiple it is to be selected exempt to remove in grant channel, alternatively exempt to permit so that determination is one or more of
Channel.
6. the method according to claim 1, wherein the first channel selection indication signaling is referred to using bitmap
Show that at least one selected described target of this cell exempts from grant channel.
7. a kind of method in the cell of communication system for exempt from grant channel selection, it is administrative that the cell configures its
One or more user equipmenies carry out channel measurement, the described method comprises the following steps:
Determine whether to receive one or more channel selection indication signalings from one or more neighboring communities
If not receiving one or more channel selection indication signalings from one or more neighboring communities, execute with
Lower step:
One or more idle channels instruction from one or more of user equipmenies is received respectively, it is one or more
Each idle channel instruction in a idle channel instruction is used to indicate is surveyed corresponding to the user equipment of idle channel instruction
Measure it is multiple it is to be selected exempt from grant channel available exempt from grant channel；
Based on one or more of idle channels indicate, from it is the multiple it is to be selected exempt from grant channel determine this cell one
A or multiple can be used exempts from grant channel；
If receiving one or more channel selection indication signalings from one or more neighboring communities, execute following
Step:
The each use cell ID of one or more of neighboring communities being sent in one or more of user equipmenies
Family equipment；
It receives by one or more of neighboring communities of each user equipment feedback in one or more of user equipmenies
Interference strength；
One or more idle channels instruction from one or more of user equipmenies is received respectively, it is one or more
Each idle channel instruction in a idle channel instruction is used to indicate is surveyed corresponding to the user equipment of idle channel instruction
The multiple free time to be selected exempted from grant channel measured exempt from grant channel；
Based on one or more of neighboring communities by each user equipment feedback in one or more of user equipmenies
Interference strength, the channel selection indication signaling corresponding to each neighboring community in the one or more neighboring community and reception
The one or more of idle channels instruction arrived to be selected exempts to determine one or more available exempt from grant channel from the multiple
Grant channel；
It is based on pre-defined rule, from one or more of can be used exempts from that at least one target is selected to exempt from grant channel in grant channel；
The first channel selection indication signaling of broadcast refers to neighboring community's the first channel selection of transmission for not carrying out channel selection
Show signaling, the first channel selection indication signaling is used to indicate at least one selected described target of this cell and exempts from license letter
Road.
8. the method according to the description of claim 7 is characterized in that the method also includes following steps:
When predetermined condition obtains meeting, from it is the multiple it is to be selected exempt to reselect at least one target in grant channel exempt to be permitted
It can channel.
9. according to the method described in claim 8, the predetermined condition meets to obtain satisfaction to include any one of following:
Exempt from grant channel with the target of neighboring community's selection mutually to conflict；
Currently selected target exempts from grant channel and is constantly in busy state.
10. according to the method described in claim 9, it is characterized in that, the scheduled transmission mode includes scheduled antenna end
Mouth configuration and scheduled modulation system.
11. the method according to the description of claim 7 is characterized in that being indicated based on one or more of idle channels, from institute
State it is multiple it is to be selected exempt to determine that the one or more of this cell are available in grant channel include: the step of exempting from grant channel
Determine the indicated common idle channel of one or more of idle channel instructions；
One or more of can be used that the common idle channel is determined as this cell is exempted from into grant channel.
12. the method according to the description of claim 7 is characterized in that based on by each in one or more of user equipmenies
The interference strength of one or more of neighboring communities of a user equipment feedback corresponds in the one or more neighboring community
The channel selection indication signaling of each neighboring community and the one or more of idle channels received instruction, from described more
It is a to be selected to exempt to determine that one or more available the step of exempting from grant channel include: in grant channel
The interference strength of one or more of neighboring communities based on each user equipment feedback, determines one
Or in multiple neighboring communities each neighboring community interference strength；
Based on the interference strength of each neighboring community, obtains interference strength in each neighboring community and be greater than predetermined interference
The set of the cell of threshold value；
It, will be selected by each cell in the set of the cell based on the channel selection indication signaling of each neighboring community
Target exempt from grant channel from it is the multiple it is to be selected exempt to remove in grant channel, alternatively exempt to permit so that determination is one or more of
Channel；
Determine the indicated common idle channel of one or more of idle channel instructions；
Alternatively exempt from grant channel and the common idle channel based on one or more of, determines the described of this cell
One or more is available to exempt from grant channel.
13. a kind of method in the cell of communication system for exempt from grant channel selection, it is administrative that the cell configures its
One or more user equipmenies carry out channel measurement, the described method comprises the following steps:
Determine whether to receive one or more channel selection indication signalings from one or more neighboring communities
If not receiving one or more channel selection indication signalings from one or more neighboring communities, execute with
Lower step:
One or more idle channels instruction from one or more of user equipmenies is received respectively, it is one or more
Each idle channel instruction in a idle channel instruction is used to indicate is surveyed corresponding to the user equipment of idle channel instruction
Measure it is multiple it is to be selected exempt from grant channel available exempt from grant channel；
Based on one or more of idle channels indicate, from it is the multiple it is to be selected exempt from grant channel determine this cell one
A or multiple can be used exempts from grant channel；
If receiving one or more channel selection indication signalings from one or more neighboring communities, execute following
Step:
The each user one or more of channel selection indication signalings being sent in one or more of user equipmenies
Equipment；
It receives and is indicated by one or more idle channels that one or more of user equipmenies are fed back, it is one or more of
Each idle channel instruction in idle channel instruction is used to indicate selected by the user equipment corresponding to idle channel instruction
Available exempt from grant channel；
It is indicated based on one or more of idle channels, determines that the one or more of this cell is available and exempt from grant channel；
It is based on pre-defined rule, from one or more of can be used exempts from that at least one target is selected to exempt from grant channel in grant channel；
The first channel selection indication signaling of broadcast refers to neighboring community's the first channel selection of transmission for not carrying out channel selection
Show signaling, the first channel selection indication signaling is used to indicate at least one selected described target of this cell and exempts from license letter
Road.
14. a kind of method for exempt from for supplementary cell grant channel selection in the user equipment of communication system, the side
Method the following steps are included:
Receive the one or more channel selections instruction letter for corresponding to one or more neighboring communities sent by the cell
It enables；
The interference strength of one or more of neighboring communities is measured respectively；
Interference strength based on each neighboring community in one or more of neighboring communities and to correspond to this each adjacent small
The channel selection indication signaling in area, from it is multiple it is to be selected exempt to determine in grant channel one or more alternatively exempt from grant channel；
Energy measuring is carried out to one or more of grant channels of alternatively exempting from；
Alternatively exempt from energy detection results in grant channel by one or more of and be less than the channel of predetermined threshold be determined as can
With exempting from grant channel；
It sends idle channel and indicates that the idle channel instruction is used to indicate determined by this user equipment can to the cell
With exempting from grant channel.
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| CN103155669A (en) * | 2010-08-16 | 2013-06-12 | 高通股份有限公司 | Method and apparatus for use of licensed spectrum for control channels in cognitive radio communications |
| CN103621130A (en) * | 2011-08-18 | 2014-03-05 | 诺基亚西门子网络公司 | Mechanisms to facilitate telecommunication system to make use of bands not-licensed to the telecommunication system |
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| CN102457921B (en) * | 2010-10-15 | 2016-04-06 | 电信科学技术研究院 | A kind of cell frequency changing method, system and equipment |
| CN103428703B (en) * | 2012-05-21 | 2018-08-21 | 北京邮电大学 | Frequency spectrum resource acquisition methods and system |
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| CN103155669A (en) * | 2010-08-16 | 2013-06-12 | 高通股份有限公司 | Method and apparatus for use of licensed spectrum for control channels in cognitive radio communications |
| CN103621130A (en) * | 2011-08-18 | 2014-03-05 | 诺基亚西门子网络公司 | Mechanisms to facilitate telecommunication system to make use of bands not-licensed to the telecommunication system |
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