CN106376025A - Relay UE (User Equipment) reselection method in D2D (Device to Device) scene and user equipment - Google Patents
Relay UE (User Equipment) reselection method in D2D (Device to Device) scene and user equipment Download PDFInfo
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- CN106376025A CN106376025A CN201510441163.8A CN201510441163A CN106376025A CN 106376025 A CN106376025 A CN 106376025A CN 201510441163 A CN201510441163 A CN 201510441163A CN 106376025 A CN106376025 A CN 106376025A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/04—Arrangements for maintaining operational condition
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
- H04W40/22—Communication route or path selection, e.g. power-based or shortest path routing using selective relaying for reaching a BTS [Base Transceiver Station] or an access point
Abstract
The invention discloses a relay UE (User Equipment) reselection method in a D2D (Device to Device) scene and user equipment. The reselection method comprises steps: the quality of a first channel with the current service relay UE and the quality of second channels with at least one piece of alternative relay UE are detected; whether a phenomenon that the quality of the second channel is higher than that of the first channel exists is judged; if yes, the difference between the quality of the second channels all higher than that of the first channel and the quality of the first channel is acquired; whether the difference is larger than or equal to a preset lag parameter is judged; if yes, whether the difference for each detection in a preset time duration is larger than or equal to the preset lag parameter is monitored; and if yes, a piece of alternative relay UE meeting conditions is reselected to be the current service relay UE. The relay UE is reselected in a mode of combining the preset lag parameter and timing, ping-pong reselection is avoided, and the problem that the service continuity of D2D transmission UE is influenced as the D2D channel quality becomes poor can be solved.
Description
Technical field
The present invention relates to wireless communication technology field is and in particular to relay under a kind of d2d scene
The reselecting method of ue and user equipment.
Background technology
In existing lte system, two user equipmenies (user equipment, ue) it
Between data transfer all by transferring realization in network, transmitting terminal ue first have to by
Communication data is sent to network, afterwards network again by this data forwarding to receiving terminal ue, even if
Want to be communicated apart from close ue for two, communication data also will be through the transfer of network
Other side just can be issued.This reduction bringing efficient network resource usage and the increase of control signaling.
Equipment room (device to device, d2d) transmission technology is for transmitting terminal ue
The transmission technology of the application scenarios close together with receiving terminal ue.During d2d transmission, two
Directly communication data can be transmitted between ue, and be no longer necessary to network and carry out transfer.Introduce
D2d transmission technology can reduce the load of network, reduces the propagation delay time of data.In addition by
Close together in two ue, d2d transmission technology can effectively reduce the transmission power of ue,
Reduce the interference to other users, realize the purpose of energy-conservation simultaneously.
Controlled in order to ensure network, network central controlled d2d transmission technology can be adopted,
By network central controlled d2d transmission as shown in figure 1, network has the ability to control whole d2d
Transmitting procedure, controls the foundation of d2d transmission by network by control signaling, safeguards and release
Let slip journey, and business datum is directly transmitted between two ue.
Introduce d2d transmission technology after, ue may carry out d2d transmission while,
Carrying out original cellular transmission.The parallel network occurring such as is schemed with cellular transmission for d2d transmission
Shown in 2, ue, while sending download associated traffic data to d2d opposite end ue, also leads to
Cross cellular transmission to be conversed with other ue.
But, in d2d transmission, base station is outside edge customer and covering in its covering
User provides reliability of service phase to be on duty.If using relaying technique, system can be reduced
Power consumption, the reliability improving d2d transmission and reduction base station communication burden, raising d2d
The coverage of communication, and then make user obtain more stable service.In a cellular network
In can there is much idle ue, how to select to relay ue to affect the performance of whole system,
Therefore, the selection strategy of relaying ue is very crucial.(i.e. d2d communication is whole for d2d transmission ue
End) multiplexing cellular communication frequency spectrum resource, and d2d lead directly to link channel conditions can with
Family position and transmission characteristic change and change, if straight-through Link Channel Quality becomes phase
It is on duty and will affect the business continuance of d2d transmission ue.
Content of the invention
The technical problem to be solved is that d2d straight-through Link Channel Quality variation will
Impact d2d transmits the problem of the business continuance of ue.
For this purpose it is proposed, in a first aspect, the present invention proposes relaying ue under a kind of d2d scene
Reselecting method, comprising:
Detection and current service relay the first channel quality and standby with least one between ue
Choose at least one the second channel quality continuing between ue；
Judge whether that at least one second channel quality is higher than the first channel quality；
If there is at least one second channel quality is higher than the first channel quality, obtain all
Higher than the second channel quality of the first channel quality and the difference of the first channel quality；
Judge whether that at least one described difference is more than or equal to default lag parameter；
If there is at least one described difference to be more than or equal to default lag parameter, monitoring is default
At least one the second channel quality detecting each time in duration and the difference of the first channel quality
Whether more than or equal to default lag parameter；At least one second channel quality described is at least one
The second channel matter of the corresponding alternative relaying ue of the individual difference more than or equal to default lag parameter
Amount；
If there is at least one alternative relaying ue, meet condition: examine each time in preset duration
The second channel quality surveyed is all higher than being equal to default delayed ginseng with the difference of the first channel quality
Number, then relay ue by an alternative relaying ue gravity treatment meeting condition for current service.
Optionally, described detection and current service relay ue between the first channel quality and
At least one second channel quality and between at least one alternative relaying ue, comprising:
Pc5 interface between detection and current service relaying ue is based on demodulated reference signal
First channel quality of dmrs measurement and the pc5 and between at least one alternative relaying ue
At least one second channel quality that interface is measured based on described dmrs.
Optionally, at least one second channel detecting each time in described monitoring preset duration
Whether quality is more than or equal to default lag parameter with the difference of the first channel quality, comprising:
Start intervalometer, at least one second channel detecting each time in monitoring preset duration
Whether quality is more than or equal to default lag parameter with the difference of the first channel quality；Wherein, institute
The timing length stating intervalometer is described preset duration；
Correspondingly, if described have at least one alternative relaying ue, meet condition: when default
The second channel quality detecting each time in length is all higher than being equal to the difference of the first channel quality
Default lag parameter, then the alternative relaying ue gravity treatment meeting condition by is current service
Relaying ue, comprising:
If there is at least one alternative relaying ue, meet condition: if during described timer expiry,
The second channel quality detecting each time is all higher than equal to default with the difference of the first channel quality
Lag parameter, then relay an alternative relaying ue gravity treatment meeting condition for current service
ue.
Optionally, if there are multiple alternative relaying ue, it is satisfied by condition: every in preset duration
The second channel quality of one-time detection and the difference of the first channel quality are all higher than stagnant equal to default
Parameter afterwards, then will meet condition and second channel quality highest alternatively relays ue gravity treatment and is
Current service relays ue.
Optionally, described default lag parameter and preset duration are the lag parameter being pre-configured with
And duration；Or pass through system information or wireless heterogeneous networks rrc dedicated signaling for receiving base station
The lag parameter of configuration and duration.
Second aspect, the present invention also provides a kind of user equipment, comprising:
Detector unit, for detection and current service relay ue between the first channel quality with
And at least one the second channel quality and between at least one alternative relaying ue；
Judging unit, is used for judging whether that at least one second channel quality is higher than first
Channel quality；
Acquiring unit, for judging there is at least one second channel matter in described judging unit
Amount higher than after the first channel quality, obtain all be higher than the first channel quality second channel matter
Amount and the difference of the first channel quality；
Described judging unit, is additionally operable to after described acquiring unit gets difference, judgement is
No at least one described difference of presence is more than or equal to default lag parameter；
In described judging unit, monitoring means, for judging that at least one described difference of presence is big
After being equal to default lag parameter, detect each time in monitoring preset duration at least one the
Whether the difference of two channel qualities and the first channel quality is more than or equal to default lag parameter；Institute
Stating at least one second channel quality is the difference that at least one is more than or equal to default lag parameter
The second channel quality of corresponding alternative relaying ue；
In described monitoring means, gravity treatment unit, for monitoring that there is at least one alternatively relays
Ue, meets condition: the second channel quality detecting each time in preset duration and the first channel
After the difference of quality is all higher than being equal to default lag parameter, by one meet condition alternative in
The ue gravity treatment that continues relays ue for current service.
Optionally, described detector unit, relays the pc5 between ue for detection and current service
The first channel quality that interface is measured based on demodulated reference signal dmrs and and at least one
At least one second letter that pc5 interface between alternative relaying ue is measured based on described dmrs
Road quality.
Optionally, described monitoring means, for judging there is at least one in described judging unit
After individual described difference is more than or equal to default lag parameter, start intervalometer, monitor preset duration
Whether the difference of at least one the second channel quality inside detecting each time and the first channel quality
More than or equal to default lag parameter；Wherein, the timing length of described intervalometer is described default
Duration；
Correspondingly, described gravity treatment unit, for monitoring exist at least in described monitoring means
One alternative relaying ue, meets condition: if during described timer expiry, detect each time
Second channel quality is all higher than being equal to after default lag parameter with the difference of the first channel quality,
One alternative relaying ue gravity treatment meeting condition is relayed ue for current service.
Optionally, described gravity treatment unit, multiple for monitoring to exist in described monitoring means
Alternative relaying ue, is satisfied by condition: the second channel quality detecting each time in preset duration
Be all higher than being equal to after default lag parameter with the difference of the first channel quality, will meet condition and
Second channel quality highest alternatively relays ue gravity treatment and relays ue for current service.
Optionally, described default lag parameter and preset duration are the lag parameter being pre-configured with
And duration；Or pass through system information or wireless heterogeneous networks rrc dedicated signaling for receiving base station
The lag parameter of configuration and duration.
The gravity treatment side of ue is provided under the d2d scene providing compared to prior art, the present invention
Method and user equipment carry out gravity treatment relaying by way of default lag parameter is combined with timing
Ue, it is to avoid ping-pong reselection, solve d2d lead directly to that Link Channel Quality is deteriorated will shadow
Ring the problem that d2d transmits the business continuance of ue.
Brief description
Fig. 1 is that a kind of network central controlled d2d transmission being related in background technology is illustrated
Figure；
Fig. 2 is that a kind of d2d transmission being related in background technology is parallel with cellular transmission to be occurred
Network diagram；
During Fig. 3 passes through for user equipment under a kind of d2d scene disclosed in one embodiment of the invention
The schematic diagram that the ue that continues is interacted with base station；
Fig. 4 is the gravity treatment relaying ue under a kind of d2d scene disclosed in one embodiment of the invention
Method flow diagram；
Fig. 5 is the gravity treatment relaying ue under a kind of d2d scene disclosed in one embodiment of the invention
Schematic diagram；
Fig. 6 is a kind of user device architecture figure disclosed in one embodiment of the invention.
Specific embodiment
Purpose, technical scheme and advantage for making the embodiment of the present invention are clearer, below will
In conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clearly
Chu's ground description it is clear that described embodiment a part of embodiment that is the present invention, rather than
Whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not having
There is the every other embodiment being obtained under the premise of making creative work, broadly fall into the present invention
The scope of protection.
Channel quality between due to far-end ue to base station cannot meet the need of far-end ue business
Will, so far-end ue needs to select a relaying ue not interrupt ensureing business.But with
Far-end ue and the movement of relaying ue, d2d between the two leads directly to link channel conditions meeting
Change with customer location and transmission characteristic, if still using original relaying ue
May result in the interruption of business, it is remote for now needing to reselect a new link terminal
End ue service.
Fig. 3 is for remote user equipment under d2d scene by showing that relaying ue is interacted with base station
Be intended to, in Fig. 3 remote user equipment (remote ue) not in base station range, far
End ue detects the idle ue of presence two in base station range and can claim as relaying ue
For relaying 1 (relay1) and relaying 2 (relay2), then far-end ue gravity treatment relays ue's
Method, as shown in figure 4, relay the reselecting method of ue, this gravity treatment under a kind of d2d scene
Method may include following steps 101 to 106:
101st, detection and current service relay the first channel quality between ue and with least one
At least one second channel quality between individual alternative relaying ue；
102nd, judge whether that at least one second channel quality is higher than the first channel quality；
If there is at least one second channel quality is higher than the first channel quality, execution step 103；
103rd, obtain all be higher than the first channel quality second channel quality and the first channel matter
The difference of amount；
104th, judge whether that at least one described difference is more than or equal to default lag parameter；
If there is at least one described difference to be more than or equal to default lag parameter, execution step 105；
105th, at least one second channel quality of detecting each time and the in monitoring preset duration
Whether the difference of one channel quality is more than or equal to default lag parameter；Described at least one second
Channel quality is the corresponding alternative relaying of difference that at least one is more than or equal to default lag parameter
The second channel quality of ue, at least one detecting each time in monitoring preset duration is more than
It is equal to the second channel quality of the corresponding alternative relaying ue of difference and the of default lag parameter
Whether the difference of one channel quality is more than or equal to default lag parameter；If it is standby to there is at least one
Choose the ue that continues, meet condition: the second channel quality detecting each time in preset duration and the
The difference of one channel quality is all higher than being equal to default lag parameter, then execution step 106；
106th, an alternative relaying ue gravity treatment meeting condition is relayed ue for current service.
The reselecting method relaying ue under above-mentioned d2d scene is by default lag parameter and timing
The mode that combines carrys out gravity treatment relaying ue, it is to avoid ping-pong reselection, solves d2d and leads directly to
Link Channel Quality is deteriorated will affect the problem of the business continuance that d2d transmits ue.
In a specific example, step 101 is particularly as follows: detection is relayed with current service
Pc5 interface between ue is based on dedicated demodulation reference signal (demodulation reference
Signal, dmrs) the first channel quality of measuring and with least one alternative relaying ue
Between at least one second channel quality of being measured based on described dmrs of pc5 interface.
In a specific example, at step 104, if there is at least one described difference
Value more than or equal to default lag parameter, then in step 105, starts intervalometer, and it is fixed to start
When device, at least one second channel quality and first of detecting each time in monitoring preset duration
Whether the difference of channel quality is more than or equal to default lag parameter；Wherein, described intervalometer
Timing length is described preset duration；At least one second channel quality described is at least one
Second channel quality more than or equal to the corresponding alternative relaying ue of difference of default lag parameter；
If there is at least one alternative relaying ue, meet condition: if during described timer expiry, often
The second channel quality of one-time detection and the difference of the first channel quality are all higher than stagnant equal to default
Parameter afterwards, then execution step 106.
In a specific example, in step 105, if there are multiple alternative relaying ue,
It is satisfied by condition: the second channel quality detecting each time in preset duration and the first channel matter
The difference of amount is all higher than being equal to default lag parameter, then execution step 106；In step 106
In, condition will be met and second channel quality highest will alternatively relay ue gravity treatment and takes for current
Business relaying ue.
In a specific example, described default lag parameter and preset duration are to join in advance
The lag parameter put and duration；Or pass through system information or wireless heterogeneous networks for receiving base station
The lag parameter of rrc dedicated signaling configuration and duration.
For example, the channel quality of the detection in above-described embodiment is based on special demodulating ginseng
Examine the channel quality of signal dmrs measurement.The present embodiment by way of example only, does not limit
The particular content of channel quality.As shown in figure 5, in t1 moment, alternatively relaying ue (ratio
As relayed 2) second channel quality be higher than that current service relays ue's (such as relay 1)
First channel quality, and second channel quality is stagnant equal to default with the difference of the first channel quality
Parameter afterwards, far-end ue monitors this second channel matter detecting each time in preset duration t
Amount is all higher than default lag parameter with the difference of the first channel quality, then gravity treatment relaying 2 is to work as
Front service relay ue.
As shown in fig. 6, the present embodiment discloses a kind of user equipment, this user equipment may include
With lower unit: detector unit 61, judging unit 62, acquiring unit 63, monitoring means 64
With gravity treatment unit 65.
Detector unit 61, relays the first channel quality between ue for detection and current service
And at least one the second channel quality and between at least one alternative relaying ue；
Judging unit 62, is used for judging whether that at least one second channel quality is higher than the
One channel quality；
Acquiring unit 63, for judging there is at least one second letter in described judging unit 62
Road quality be higher than the first channel quality after, obtain all be higher than the first channel quality second letter
Road quality and the difference of the first channel quality；
Described judging unit 62, is additionally operable to, after described acquiring unit 63 gets difference, sentence
Disconnected at least one described difference that whether there is is more than or equal to default lag parameter；
Monitoring means 64, for judging there is at least one described difference in described judging unit 62
After value is more than or equal to default lag parameter, monitor at least detecting each time in preset duration
Whether individual second channel quality is more than or equal to default delayed ginseng with the difference of the first channel quality
Number；At least one second channel quality described is more than or equal to default lag parameter at least one
The corresponding alternative relaying ue of difference second channel quality；
Gravity treatment unit 65, alternative for monitoring to there is at least one in described monitoring means 64
Relaying ue, meets condition: the second channel quality and first detecting each time in preset duration
After the difference of channel quality is all higher than being equal to default lag parameter, one is met the standby of condition
The ue gravity treatment that continues is chosen to relay ue for current service.
In a specific example, described detector unit 61, for detection and current service
The first channel matter that pc5 interface between relaying ue is measured based on demodulated reference signal dmrs
Amount and the pc5 interface and between at least one alternative relaying ue are based on described dmrs measurement
At least one second channel quality.
In a specific example, described monitoring means 64, in described judging unit
After 62 judge that there is at least one described difference is more than or equal to default lag parameter, monitoring is default
At least one the second channel quality detecting each time in duration and the difference of the first channel quality
Whether more than or equal to default lag parameter；Wherein, the timing length of described intervalometer is described
Preset duration；At least one second channel quality described is more than or equal to default stagnant at least one
The second channel quality of the corresponding alternative relaying ue of the difference of parameter afterwards；
Correspondingly, described gravity treatment unit 65, for monitoring exist in described monitoring means 64
At least one alternative relaying ue, meets condition: if during described timer expiry, examine each time
The second channel quality surveyed is all higher than being equal to default lag parameter with the difference of the first channel quality
Afterwards, an alternative relaying ue gravity treatment meeting condition is relayed ue for current service.
In a specific example, described gravity treatment unit 65, in described monitoring means
64 monitor there are multiple alternative relaying ue, are satisfied by condition: in preset duration each time
The second channel quality of detection and the difference of the first channel quality are all higher than being equal to presets delayed ginseng
After number, will meet condition and second channel quality highest alternatively to relay ue gravity treatment be current
Service relay ue.
In a specific example, described default lag parameter and preset duration are to join in advance
The lag parameter put and duration；Or pass through system information or wireless heterogeneous networks for receiving base station
The lag parameter of rrc dedicated signaling configuration and duration.
It will be understood by those skilled in the art that the module in the equipment in embodiment can be entered
Row adaptively changes and they is arranged on different from this embodiment one or more
In equipment.Module in embodiment or unit or assembly can be combined into a module or list
Unit or assembly, and multiple submodule or subelement or sub-component can be divided in addition.
Except such feature and/or at least some of process or unit are mutually exclusive parts,
Can be using any combinations to all features disclosed in this specification and so disclosed
Where method or all processes of equipment or unit are combined.Unless expressly stated otherwise,
Each feature disclosed in this specification can be by providing replacing of identical, equivalent or similar purpose
To replace for feature.
Although additionally, it will be appreciated by those of skill in the art that some enforcements described herein
Example includes included some features rather than further feature in other embodiments, but different
The combination of the feature of embodiment means to be within the scope of the present invention and formed different
Embodiment.
The all parts embodiment of the present invention can be realized with hardware, or with one or
The software module run on multiple processors is realized, or is realized with combinations thereof.Ability
Domain it will be appreciated by the skilled person that can be in practice using microprocessor or digital signal
Processor (dsp) is realizing a kind of equipment of browser terminal according to embodiments of the present invention
In some or all parts some or all functions.The present invention is also implemented as
For executing some or all equipment or the program of device of method as described herein
(for example, computer program and computer program).Such journey realizing the present invention
Sequence can store on a computer-readable medium, or can have one or more signal
Form.Such signal can be downloaded from internet website and obtain, or in carrier letter
There is provided on number, or provided with any other form.
Although being described in conjunction with the accompanying embodiments of the present invention, those skilled in the art
Various modifications and variations can be made without departing from the spirit and scope of the present invention,
Within the scope of such modification and modification each fall within and are defined by the appended claims.
Claims (10)
1. relay the reselecting method of ue under a kind of d2d scene it is characterised in that including:
Detection and current service relay the first channel quality and standby with least one between ue
Choose at least one the second channel quality continuing between ue；
Judge whether that at least one second channel quality is higher than the first channel quality；
If there is at least one second channel quality is higher than the first channel quality, obtain all
Higher than the second channel quality of the first channel quality and the difference of the first channel quality；
Judge whether that at least one described difference is more than or equal to default lag parameter；
If there is at least one described difference to be more than or equal to default lag parameter, monitoring is default
At least one the second channel quality detecting each time in duration and the difference of the first channel quality
Whether more than or equal to default lag parameter；At least one second channel quality described is at least one
The second channel matter of the corresponding alternative relaying ue of the individual difference more than or equal to default lag parameter
Amount；
If there is at least one alternative relaying ue, meet condition: examine each time in preset duration
The second channel quality surveyed is all higher than being equal to default delayed ginseng with the difference of the first channel quality
Number, then relay ue by an alternative relaying ue gravity treatment meeting condition for current service.
2. reselecting method according to claim 1 it is characterised in that described detection with
Current service is relayed the first channel quality between ue and is alternatively relayed between ue with least one
At least one second channel quality, comprising:
Pc5 interface between detection and current service relaying ue is based on demodulated reference signal
First channel quality of dmrs measurement and the pc5 and between at least one alternative relaying ue
At least one second channel quality that interface is measured based on described dmrs.
3. reselecting method according to claim 1 is it is characterised in that described monitoring is pre-
If at least one the second channel quality detecting each time in duration and the difference of the first channel quality
Whether value is more than or equal to default lag parameter, comprising:
Start intervalometer, at least one second channel detecting each time in monitoring preset duration
Whether quality is more than or equal to default lag parameter with the difference of the first channel quality；Wherein, institute
The timing length stating intervalometer is described preset duration；
Correspondingly, if described have at least one alternative relaying ue, meet condition: when default
The second channel quality detecting each time in length is all higher than being equal to the difference of the first channel quality
Default lag parameter, then the alternative relaying ue gravity treatment meeting condition by is current service
Relaying ue, comprising:
If there is at least one alternative relaying ue, meet condition: if during described timer expiry,
The second channel quality detecting each time is all higher than equal to default with the difference of the first channel quality
Lag parameter, then relay an alternative relaying ue gravity treatment meeting condition for current service
ue.
If 4. reselecting method according to claim 1 is it is characterised in that exist multiple
Alternative relaying ue, is satisfied by condition: the second channel quality detecting each time in preset duration
Be all higher than being equal to default lag parameter with the difference of the first channel quality, then will meet condition and
Second channel quality highest alternatively relays ue gravity treatment and relays ue for current service.
5. reselecting method according to claim 1 is it is characterised in that described default stagnant
Parameter and preset duration are the lag parameter and duration being pre-configured with afterwards；Or lead to for receiving base station
Cross system information or wireless heterogeneous networks rrc dedicated signaling configuration lag parameter and duration.
6. a kind of user equipment is it is characterised in that include:
Detector unit, for detection and current service relay ue between the first channel quality with
And at least one the second channel quality and between at least one alternative relaying ue；
Judging unit, is used for judging whether that at least one second channel quality is higher than first
Channel quality；
Acquiring unit, for judging there is at least one second channel matter in described judging unit
Amount higher than after the first channel quality, obtain all be higher than the first channel quality second channel matter
Amount and the difference of the first channel quality；
Described judging unit, is additionally operable to after described acquiring unit gets difference, judgement is
No at least one described difference of presence is more than or equal to default lag parameter；
In described judging unit, monitoring means, for judging that at least one described difference of presence is big
After being equal to default lag parameter, detect each time in monitoring preset duration at least one the
Whether the difference of two channel qualities and the first channel quality is more than or equal to default lag parameter；Institute
Stating at least one second channel quality is the difference that at least one is more than or equal to default lag parameter
The second channel quality of corresponding alternative relaying ue；
In described monitoring means, gravity treatment unit, for monitoring that there is at least one alternatively relays
Ue, meets condition: the second channel quality detecting each time in preset duration and the first channel
After the difference of quality is all higher than being equal to default lag parameter, by one meet condition alternative in
The ue gravity treatment that continues relays ue for current service.
7. user equipment according to claim 6 is it is characterised in that described detection list
Unit, the pc5 interface relaying for detection and current service between ue is based on demodulated reference signal
First channel quality of dmrs measurement and the pc5 and between at least one alternative relaying ue
At least one second channel quality that interface is measured based on described dmrs.
8. user equipment according to claim 6 is it is characterised in that described monitoring list
Unit, for judging there is at least one described difference more than or equal to default in described judging unit
After lag parameter, start intervalometer, at least one detecting each time in monitoring preset duration
Whether second channel quality is more than or equal to default lag parameter with the difference of the first channel quality；
Wherein, the timing length of described intervalometer is described preset duration；
Correspondingly, described gravity treatment unit, for monitoring exist at least in described monitoring means
One alternative relaying ue, meets condition: if during described timer expiry, detect each time
Second channel quality is all higher than being equal to after default lag parameter with the difference of the first channel quality,
One alternative relaying ue gravity treatment meeting condition is relayed ue for current service.
9. user equipment according to claim 6 is it is characterised in that described gravity treatment list
Unit, for monitoring there are multiple alternative relaying ue in described monitoring means, is satisfied by condition:
The second channel quality detecting each time in preset duration is all big with the difference of the first channel quality
After being equal to default lag parameter, will meet condition and second channel quality highest alternative in
The ue gravity treatment that continues relays ue for current service.
10. user equipment according to claim 6 is it is characterised in that described preset
Lag parameter and preset duration are the lag parameter and duration being pre-configured with；Or for receiving base station
By system information or wireless heterogeneous networks rrc dedicated signaling configuration lag parameter and when
Long.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510441163.8A CN106376025A (en) | 2015-07-24 | 2015-07-24 | Relay UE (User Equipment) reselection method in D2D (Device to Device) scene and user equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510441163.8A CN106376025A (en) | 2015-07-24 | 2015-07-24 | Relay UE (User Equipment) reselection method in D2D (Device to Device) scene and user equipment |
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Cited By (3)
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| CN111586765A (en) * | 2019-02-15 | 2020-08-25 | 华为技术有限公司 | Method and device for relay communication |
| CN114080062A (en) * | 2020-08-19 | 2022-02-22 | 华为技术有限公司 | Method, medium and equipment for reselecting relay UE |
| WO2023088367A1 (en) * | 2021-11-17 | 2023-05-25 | 大唐移动通信设备有限公司 | Data transmission method, remote ue, relay ue and storage medium |
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| CN101854690A (en) * | 2009-03-31 | 2010-10-06 | 北京三星通信技术研究有限公司 | Cell reselection method and dual-mode terminal thereof |
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| CN101854690A (en) * | 2009-03-31 | 2010-10-06 | 北京三星通信技术研究有限公司 | Cell reselection method and dual-mode terminal thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111586765A (en) * | 2019-02-15 | 2020-08-25 | 华为技术有限公司 | Method and device for relay communication |
| CN111586765B (en) * | 2019-02-15 | 2023-01-13 | 华为技术有限公司 | Method and device for relay communication |
| CN114080062A (en) * | 2020-08-19 | 2022-02-22 | 华为技术有限公司 | Method, medium and equipment for reselecting relay UE |
| WO2023088367A1 (en) * | 2021-11-17 | 2023-05-25 | 大唐移动通信设备有限公司 | Data transmission method, remote ue, relay ue and storage medium |
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