Summary of the invention
To solve the above-mentioned problems, the application provides the method and terminal of terminal selection unlicensed spectrum, is passed through with realizing
Terminal to wireless network unlicensed spectrum transmitting data control.
This application provides following schemes:
A kind of method of terminal selection unlicensed spectrum is applied to LTE wireless communication system, LTE wireless communication system
System includes base station and terminal, and the base station and terminal support authorization auxiliary access LAA;
The described method includes:
When meeting unlicensed spectrum closedown condition, the terminal executes unlicensed spectrum shutdown strategy;
The unlicensed spectrum shutdown strategy includes:
In terminal not in the case where establishing connection with base station in unlicensed spectrum, the base station Xiang Suoshu reports search unsuccessfully to believe
Breath, described search failure information are searched for for being characterized in unlicensed spectrum less than cell information, so that the base station is according to institute
It states search failure information decision and establishes connection with the terminal not in unlicensed spectrum;
It is being issued according to base station, for described in terminal in the case where establishing connection with base station in unlicensed spectrum
The measurement task of unlicensed spectrum measures, and obtains actual measured results, abandons the actual measured results, and to the base
Station reports the measurement result lower than threshold value, so that the base station is not used according to the measurement result decision lower than threshold value
Wireless network is in unlicensed spectrum transmitting data;
The unlicensed spectrum closedown condition includes at least one of first condition and second condition;
The first condition includes: that the control switch of terminal is in close state;The second condition includes: the terminal
The high network of access priority and can normal communication;
When the control switch is in the open state, characterization allows using LTE network in unlicensed spectrum transmitting data,
When the control switch is in close state, characterization does not allow using LTE network in unlicensed spectrum transmitting data.
Preferably, before executing the unlicensed spectrum shutdown strategy, further includes:
In response to base station about whether the inquiry message for supporting LAA, the terminal returns to response message, the response message
Carry the information that characterization supports LAA.
Preferably, the high network of the priority is specially wlan network.
Preferably, the measurement task includes measurement item, and the measurement item includes Reference Signal Received Power, reference signal
At least one of the quality of reception, reference signal strength and SINR;The measurement result is specially the corresponding survey of the measurement item
Measure result.
Preferably, the measurement task is by authorizing frequency spectrum to issue.
A kind of terminal is applied to LTE wireless communication system, and the LTE wireless communication system includes base station and terminal, described
Base station and terminal support authorization auxiliary access LAA;
The terminal includes:
Execution unit, for executing unlicensed spectrum shutdown strategy when meeting unlicensed spectrum closedown condition;
The unlicensed spectrum shutdown strategy includes:
If establishing connection with base station not in unlicensed spectrum, the base station Xiang Suoshu reports search failure information, described search
Failure information is searched for for being characterized in unlicensed spectrum less than cell information, so that the base station is unsuccessfully believed according to described search
It ceases decision and establishes connection with the terminal not in unlicensed spectrum;
It is being issued according to base station, for the unlicensed spectrum if establishing connection with base station in unlicensed spectrum
Measurement task measures, and obtains actual measured results, abandons the actual measured results, and report lower than door to the base station
The measurement result of limit value, so that the base station does not use wireless network non-according to the measurement result decision lower than threshold value
Authorize frequency spectrum transmitting data;
The unlicensed spectrum closedown condition includes at least one of first condition and second condition;
The first condition includes: that the control switch of terminal is in close state;
The second condition includes: the terminal high network of access priority and can normal communication;
When the control switch is in the open state, characterization allows using LTE network in unlicensed spectrum transmitting data,
When the control switch is in close state, characterization does not allow using LTE network in unlicensed spectrum transmitting data.
Preferably, further includes: receiving unit, for before executing the unlicensed spectrum shutdown strategy, reception to be based on
About whether the inquiry message for supporting LAA;Return unit, for returning to response message, the response message carries characterization branch
Hold the information of LAA.
Preferably, the high network of the priority is specially wlan network.
Preferably, the measurement task includes measurement item, and the measurement item includes Reference Signal Received Power, reference signal
At least one of the quality of reception, reference signal strength and SINR;The measurement result is specially the corresponding survey of the measurement item
Measure result.
Preferably, the measurement task is by authorizing frequency spectrum to issue.
In the present invention, user can choose whether to transmit number in unlicensed spectrum using LTE network by control switch
According to.If control switch is set to off, terminal reports search failure information or the measurement result lower than threshold value, base station to connect
After receiving search failure information or measurement result, meeting decision does not use unlicensed spectrum.Such processing mode had both had followed by base
It stands the mechanism determined, while can realize the selection based on user again to use or LTE network is forbidden to transmit in unlicensed spectrum
Data.
At the same time, the higher network of access priority and can normal communication in the case where, no matter control switch whether
It is in close state, terminal can report search failure information or the measurement result lower than threshold value, be made with enabling base station decision not
Use unlicensed spectrum.It can guarantee the high network of preferential use priority in this way.
Specific embodiment
The embodiment of the present application is intended to protective seletion method and terminal, can be applicable to LTE system or the various communication technology/networks/
The scene that system competition coexists.
In the application, noun " network " and " system " are often used alternatingly, but it will be appreciated by those skilled in the art that its
Meaning.
Above-mentioned LTE system may include base station and terminal.
In R13, LAA (Licensed-Assisted Access, the access of authorization auxiliary) technology is introduced, base station can be same
Shi Liyong authorization frequency spectrum and unlicensed spectrum provide communication service together for terminal.That is, LTE system is gone back in addition to authorizing frequency spectrum
Carry out data transmission using unlicensed spectrum.Simultaneously it is also possible to there are other network/systems to use unlicensed spectrum, such as
Wlan network.For convenient for address, the present invention will authorize frequency spectrum to be known as f1, unlicensed spectrum be known as f2.
In unlicensed spectrum, each communication system/network mode competition-based is accessed, therefore, in unlicensed spectrum
Communication quality and experience may not be able to be protected.In addition, wlan network is usually monthly payment service, it is not intended to limit flow;
And LTE wireless network is generally according to flow charging (may also be by flow charging in unlicensed spectrum).In unlicensed spectrum
In the case where having multiple networks, user may want to the lower network of priority access rate.
To sum up, for users, it chooses whether to upload using wireless network (or being LTE network) in unlicensed spectrum
The demand of transmission of data.
But referring to Figure 1, for wireless network, (" data connection " corresponds to wireless network to existing LTE terminal in Fig. 1
Switch), only open and close two kinds of selections.It is uploaded that is, existing LTE terminal is not provided a user for unlicensed spectrum
The options of transmission of data.
Also, in LTE system, terminal is to receive or send data according to the scheduling of base station, if uses wireless network
Network is to be determined by base station, rather than determined by terminal in unlicensed spectrum transmitting data.Therefore existing LTE terminal, can not be right
Whether controlled using wireless network in unlicensed spectrum transmitting data.
For this purpose, the embodiment of the present application provides the method (abbreviation selection method) of terminal selection unlicensed spectrum and executes the party
The terminal of method.
The basis of the above method is that base station and terminal support LAA.Terminal is held when meeting unlicensed spectrum closedown condition
Row unlicensed spectrum shutdown strategy is controlled whether using wireless network to realize in unlicensed spectrum transmitting data.
More specifically, for different scenes, the content that above-mentioned unlicensed spectrum closedown condition is included is different, accordingly
, the content of unlicensed spectrum shutdown strategy is also not quite similar.
Branch scape describes to above-mentioned selection method in detail below.
Scene one, terminal does not access wlan network, also, terminal is connect with base station.
Once include two kinds of situations in scene:
Situation one, terminal only establish connection with base station on f1;
Situation two, terminal establish connection with base station on f1 and f2.
Under situation one (terminal only establishes connection with base station on f1), the interactive process of terminal and base station can be found in figure
2a may include following steps:
200 parts: support the base station of LAA issues the inquiry message for whether supporting LAA;
When only LAA is supported in base station and terminal, selection method provided by the embodiment of the present invention just can be performed.Therefore,
Base station needs to know whether terminal supports LAA.
201 parts: in response to above-mentioned inquiry message, terminal returns to response message, and characterization branch is carried in the response message
Hold the information of LAA.
In one example, the response message in existing standard agreement can be used and carry the information that characterization supports LAA.Another
In one example, newly-increased message can also be used and carry above- mentioned information.
Certainly, when terminal does not support LAA, terminal also can return to response message, and only the response message carries characterization
The information of LAA is not supported.
More specifically, it can be used whether numerical value 0,1 supports LAA to characterize.
202 parts: in terminal not in the case where establishing connection with base station in unlicensed spectrum, terminal is in unlicensed spectrum
Upper search cell information.
More specifically, terminal can search for cell information according to the configuration instruction of base station.
In existing LTE system, terminal will access LTE network on authorization frequency spectrum, must be by cell searching, acquisition cell
The processes such as system information, random access.Wherein, the main purpose of cell searching includes: to obtain frequency and sign synchronization with cell;
Obtain system-frame timing, the i.e. initial position of downlink frame;Determine PCI (the Physical-layer Cell of cell
Identity)。
In one example, terminal will access LTE network in unlicensed spectrum, can be by base station on authorization frequency spectrum
The required information of unlicensed spectrum access is issued, terminal need to only measure the signal strength in unlicensed spectrum.
203 parts: in the case where the control switch of terminal is in close state, regardless of whether cell information is searched, in terminal
Report search failure information.
To select convenient for user, terminal can provide f2 control switch (referring to Fig. 3 a) or f2 control option on interface
(referring to Fig. 3 b), when control switch is in the open state, characterization allows to transmit number in unlicensed spectrum using LTE network
According to when control switch is in close state, characterization does not allow using LTE network in unlicensed spectrum transmitting data.It uses in this way
Family can decide whether use wireless network in f2 transmitting data in its sole discretion.Due to there are many terminal types, interface setting can also have
A variety of, the present invention is without specifically limiting.
In the present embodiment, unlicensed spectrum closedown condition includes that control switch is in close state (can be by control switch
It is in close state referred to as first condition).
Above-mentioned search failure information is searched for for being characterized in unlicensed spectrum less than cell information.
It should be noted that no matter whether terminal searches cell information since control switch is in close state,
Search failure information can be reported.In order to which base station executes subsequent 204 part.
That is, in the present embodiment, unlicensed spectrum shutdown strategy includes " base station Xiang Suoshu reports search failure information ".
Since terminal does not also establish connection with base station on f2, search failure information can be reported by f1.
In one example, terminal can be searched for by existing RRC (Radio Resource Control) information reporting
Failure information.In another example, newly-increased message can also be used and carry above- mentioned information.
204 parts: according to the search failure information received, decision, which is established not in unlicensed spectrum with terminal, to be connected for base station
It connects.
In the present embodiment, user can choose whether to upload using wireless network in unlicensed spectrum by control switch
Transmission of data.If control switch is set to off, no matter whether terminal searches cell information in unlicensed spectrum, in meeting
Report search failure information, after base station receives search failure information, meeting decision does not use unlicensed spectrum.And if control switch quilt
It is set on, then terminal can execute operation as defined in agreement.
Selection mode provided by the present embodiment had not only had followed the mechanism determined by base station, but also can realize based on use
The selection at family uses or forbids wireless network in unlicensed spectrum transmitting data.
Under situation two (terminal has established connection with base station on f2), the interactive process of terminal and base station can be found in figure
2b may include following steps:
205 parts: it is that terminal is issued according to base station, measured for the measurement task of unlicensed spectrum, obtain reality
Measurement result.
More specifically, terminal can be issued according to base station, for the measurement task of unlicensed spectrum, be measured in unauthorized frequency
Whether the signal quality in spectrum reaches the requirement of transmission data.
Above-mentioned measurement task may include measurement parameter and measurement item.
Wherein, measurement parameter may include time of measuring, bandwidth etc..For limiting time, the bandwidth of terminal measurement;Measurement item
It may include at least one of Reference Signal Received Power, Reference Signal Received Quality, reference signal strength and SINR;Measurement knot
Fruit is then the corresponding measurement result of measurement item.
Above-mentioned measurement task can be issued by f1, can also be issued by f2.
It should be noted that terminal establishes connection on f2 with base station in the present embodiment, then base station has necessarily been known
Terminal supports LAA, then does not need to execute above-mentioned 200 and 201 parts again.
206 parts: in the case where control switch is in close state, terminal abandons actual measured results, and reports to base station low
In the measurement result of threshold value.
In the present embodiment, unlicensed spectrum closedown condition includes that control switch is in close state (first condition).
For the measurement task that base station issues, terminal can trigger report measurement results according to feedback cycle, or according to event
Trigger report measurement results.
In the present embodiment, terminal feedback cycle reports or not is actual measurement according to the measurement result that event triggering reports
As a result, and being less than the measurement result of threshold value.The threshold value is defined threshold value in agreement.When measurement result is lower than thresholding
Value, base station will be considered that f2 does not have the condition of transmission data.
That is, in the present embodiment, unlicensed spectrum shutdown strategy includes " abandoning actual measured results, and on base station
Report is lower than the measurement result of threshold value ".
It should be noted that the time of base station sending measuring task, can occur to be in user setting control switch and close
Before state, it may also occur at after user setting control switch is in close state.
207 parts: base station is according to the measurement result for being lower than threshold value, and decision is without using wireless network in unlicensed spectrum
Transmit data.
In the present embodiment, user can choose whether to upload using wireless network in unlicensed spectrum by control switch
Transmission of data.If control switch is set to off, terminal reports the measurement result lower than threshold value, and base station receives above-mentioned survey
After measuring result, meeting decision does not use unlicensed spectrum.Such processing mode had not only had followed the mechanism determined by base station, but also
The selection based on user can be achieved to use or forbid wireless network in unlicensed spectrum transmitting data.
Scene two, terminal is connect with base station, and terminal accesses WLAN.
Equally include two kinds of situations under scene two:
Situation one, terminal only establish connection with base station on f1;Situation two, terminal is established with base station on f1 and f2 to be connected
It connects.
Wlan network is usually monthly payment service, is not intended to limit flow, so the settable wlan network priority of user is higher than
Wireless network.Alternatively, just the priority of setting wlan network is higher than wireless network to terminal when leaving the factory.
The switch selection function for WLAN (wifi) has been provided in existing terminal.When user selects to open WLAN
Afterwards, terminal can scan for wifi signal, then allow user to select in the form of a list.Alternatively, terminal can directly connect
The wifi network once accessed before entering.
If terminal access wlan system, and can normal communication, can design and wireless network is automatically closed in unlicensed spectrum
On data transmission.
For situation one, data transmission of the wireless network in unlicensed spectrum is automatically closed realizing, terminal with
The interactive process of base station can be found in Fig. 4 a, may include following steps:
The part 400-402 is identical as the part 200-202 above-mentioned, and therefore not to repeat here.
403 parts: under second condition (terminal accesses wlan system, and being capable of normal communication), regardless of whether searching
Cell information, terminal report search failure information.
Detail refers to aforementioned 203 part, and therefore not to repeat here.
404 parts: according to the search failure information received, decision, which is established not in unlicensed spectrum with terminal, to be connected for base station
It connects.
For situation two, data transmission of the wireless network in unlicensed spectrum is automatically closed realizing, terminal with
The interactive process of base station can be found in Fig. 4 b, may include following steps:
405 parts: it is that terminal is issued according to base station, measured for the measurement task of unlicensed spectrum, obtain reality
Measurement result.
Detail refers to aforementioned 205 part, and therefore not to repeat here.
406 parts: under a second condition, terminal abandons actual measured results, and reports the survey lower than threshold value to base station
Measure result.
Detail refers to aforementioned 206 part, and therefore not to repeat here.
407 parts: base station does not use wireless network in unlicensed spectrum according to the measurement result decision lower than threshold value
Transmit data.
As it can be seen that the higher network of priority and can normal communication in the case where, no matter whether control switch is in closing
State, terminal can report search failure information or the measurement result lower than threshold value, to enable base station decision without using unauthorized
Frequency spectrum can guarantee the high network of preferential use priority in this way.
In other embodiments of the present invention, can also design terminal access wlan system and can normal communication and control open
Pass is in close state down, closes data transmission of the wireless network in unlicensed spectrum.
The specific structure of above-mentioned terminal is explained below.
Refer to Fig. 5, a kind of exemplary structure of above-mentioned terminal 500 can include:
Execution unit 1, for executing unlicensed spectrum shutdown strategy when meeting unlicensed spectrum closedown condition;
Wherein, unlicensed spectrum shutdown strategy includes:
If establishing connection with base station not in unlicensed spectrum, Xiang Jizhan reports search failure information, searches for failure information
For being characterized in unlicensed spectrum search less than cell information, so as to base station according to search failure information decision not unauthorized
Connection is established with terminal on frequency spectrum;
If establishing connection with base station in unlicensed spectrum, measurement being issued according to base station, for unlicensed spectrum
Task measures, and obtains actual measured results, abandons actual measured results, and report the measurement knot lower than threshold value to base station
Fruit, so that base station does not use wireless network in unlicensed spectrum transmitting data according to the measurement result decision lower than threshold value;
Unlicensed spectrum closedown condition includes at least one of first condition and second condition;Wherein,
First condition includes: that the control switch of terminal is in close state;
Second condition includes: the terminal high network of access priority and can normal communication;
When control switch is in the open state, characterization allows using LTE network in unlicensed spectrum transmitting data, control
When switch is in close state, characterization does not allow using LTE network in unlicensed spectrum transmitting data.
Detail refers to the introduction of method part, and therefore not to repeat here.
Execution unit 1 can be performed the part 202-203 shown in Fig. 2 a, the part 205-206 shown in Fig. 2 b, shown in Fig. 4 a
The part 405-406 shown in the part 402-403, Fig. 4 b.
In other embodiments of the present invention, Fig. 5 is still referred to, above-mentioned terminal may also include that
Receiving unit 2, for before executing unlicensed spectrum shutdown strategy, receiving based on about whether support LAA's
Inquire message;
201 parts shown in Fig. 2 a, 401 parts shown in Fig. 4 a can be performed in receiving unit 2.
Return unit 3, for returning to response message.The response message carries the information that characterization supports LAA.
200 parts shown in Fig. 2 a, 400 parts shown in Fig. 4 a can be performed in return unit 3.
Detail refers to the introduction of method part, and therefore not to repeat here.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
Specific examples are used herein to illustrate the principle and implementation manner of the present application, and above embodiments are said
It is bright to be merely used to help understand the present processes and its core concept;At the same time, for those skilled in the art, foundation
The thought of the application, there will be changes in the specific implementation manner and application range.To sum up above-mentioned, the content of the present specification is not
It is interpreted as the limitation to the application.