CN105530595A - Device-to-device communication method and device - Google Patents
Device-to-device communication method and device Download PDFInfo
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- CN105530595A CN105530595A CN201410569300.1A CN201410569300A CN105530595A CN 105530595 A CN105530595 A CN 105530595A CN 201410569300 A CN201410569300 A CN 201410569300A CN 105530595 A CN105530595 A CN 105530595A
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Abstract
The embodiment of the invention discloses a D2D (device-to-device) communication method and device. The method comprises that: UE (User Equipment) of D2D transmission mode receives special D2D resource information and emergency resource pool information distributed by a network side; the UE measures the power value of a receiving signal coming from the network side, whether the power value is more than a preset threshold value is judged, if so, it is judged that the UE is located at the center position of a cell, or it is judged that the UE is located at the edge position of the cell; with respect to the UE located at the center position of the cell, whether the duration of the UE in a preset exception state reaches preset duration is determined, when the duration reaches the preset duration, the UE carries out D2D communication through an emergency resource pool. According to the embodiment of the invention, a solution is provided for the condition that the network side and the UE of D2D transmission mode utilize the same resource simultaneously to cause mutual interference; and the communication effect is improved.
Description
Technical field
The application relates to mobile communication technology field, particularly relates to a kind of equipment to equipment (D2D) communication means and device.
Background technology
Existing Long Term Evolution (LongTermEvolution, LTE) in system, transfer of data between two subscriber equipmenies (UE) all carries out relaying to realize by network side, namely, first communication data will be sent to network side by transmitting terminal UE, afterwards network side again by this data retransmission to receiving terminal UE.Even if the very near UE of two distances wants to communicate, so these communication datas also just will can issue the other side through the transmission of network side.
D2D communication means proposes for the application scenarios of transmitting terminal UE and receiving terminal UE close together, now, directly can transmit communication data, and no longer need network side to carry out relaying between two UE.Adopt D2D communication means can reduce the load of network side, in addition due to two UE close together, effectively can reduce the transmitting power of UE, thus realize energy-conservation object.
In order to be different from the D2D transmission means of data in D2D communication means, to carry out by network side the mode that relaying realizes transfer of data be cellular transmission mode hereinafter referred to as original.
In D2D communication means, the method for salary distribution of the D2D communication resource is divided into two kinds:
Mode one: when in the coverage that UE is in the base station (eNB) supporting D2D communication means, UE distributes proprietary D2D resource by proprietary signaling to network request, this proprietary D2D resource is current only carries out D2D communication for this UE, that is, do not used by any other UE except this UE.
Mode two: when in the coverage that UE is in the eNB supporting D2D communication means, network side gives all user resource allocations carrying out D2D communication by proprietary signaling or SIB message, namely, network side marks off D2D communication resource pond, this D2D communication resource pond is specifically designed to UE and adopts D2D transmission means to communicate, in other words, do not occur simultaneously with the resource that the UE adopting cellular transmission mode to communicate in network utilizes in this D2D communication resource pond.Adopt D2D transmission means and adopt all UE of which two allocate communications resource to share this resource pool.Time beyond the coverage that UE is in the eNB supporting D2D communication means, D2D communication is carried out in the D2D communication resource pond obtained before UE adopts.
Wherein, when adopting mode one to distribute the D2D communication resource for UE, eNB also can distribute an emergency resources pond for this UE, and UE, when special circumstances appear in the communication with eNB, uses this emergency resources pond to carry out D2D communication.At present, described special circumstances comprise RRC connection establishment failure or RRC is rebuilding or UE can not receive uplink authorization.
Because described special circumstances are not the reason such as frequent appearance and limited communications resources, described emergency resources pond usually exists with the communication resource adopting the UE of cellular transmission mode to utilize occurs simultaneously.Therefore, there will be network side and adopt the UE of D2D transmission means to use identical resource simultaneously, this to causing interference each other, will affect communication efficiency.
About how processing this interference to improve communication efficiency, also there is no concrete technical scheme at present.
Summary of the invention
The invention provides a kind of equipment to equipment (D2D) communication means and device, and the UE of D2D transmission means can be adopted to use identical resource to cause situation interfering with each other to provide solution for network side simultaneously, improve communication efficiency.
A kind of equipment is to devices communicating method, and the method comprises:
Employing equipment receives proprietary D2D resource information and the emergency resources pond information of network side distribution to the UE of equipment (D2D) transmission means;
Described UE measures the performance number from the Received signal strength of network side, judges whether this performance number is greater than predetermined threshold value, if be greater than, judges that this UE is in center of housing estate position, otherwise, judge that this UE is in cell edge position;
When there is in the communication with network side the exception condition preset in described UE, judge whether described UE is in center of housing estate position, if, judge whether the duration that described UE is in default exception condition reaches preset duration, when reaching preset duration, described UE utilizes described emergency resources pond to carry out D2D communication.
A kind of subscriber equipment (UE), this UE comprises communication resource acquisition module, location identification module and D2D communication module;
Described communication resource acquisition module, for receiving proprietary D2D resource information and the emergency resources pond information of network side distribution;
Described location identification module, for measuring the performance number of the Received signal strength from network side, judges whether this performance number is greater than predetermined threshold value, if be greater than, determines that this UE is in center of housing estate position, otherwise, determine that this UE is in cell edge position;
Described D2D communication module, for when described UE the communication with network side occur preset exception condition and described UE be in center of housing estate position time, determine whether the duration that described UE is in default exception condition reaches preset duration, when reaching preset duration, described UE utilizes described emergency resources pond to carry out D2D communication.
The applicant finds by analyzing, the abnormal conditions of UE, i.e. described preset state, usually all cell edge is occurred in, and when UE is in center of housing estate, then seldom there is exception, if occur abnormal, then can recover normal operation very soon, occur simultaneously because described emergency resources pond usually exists with the communication resource adopting the UE of cellular transmission mode to utilize, therefore, there will be network side and adopt the UE of D2D transmission means to use identical resource simultaneously, if enable emergency resources pond to carry out D2D communication when UE is in center of housing estate, then produce stronger uplink interference by with cellular network communication.
Based on above-mentioned analysis, in the embodiment of the present invention, employing mode one is distributed to the UE of the D2D communication resource, by identifying that UE position is in the cell in center of housing estate or is in cell edge, when it occurs the exception condition preset, first judge whether this UE position is in the cell be in center of housing estate, if be in center of housing estate, then need to wait for after scheduled duration, if UE does not also depart from described preset state, then enable emergency resources pond and carry out D2D communication.Visible, for the D2DUE being in center of housing estate, when there are abnormal conditions in it, these abnormal conditions are only had to continue scheduled duration, just can start emergency resources pond, because the abnormal conditions that the heart occurs in the cell all can be recovered usually very soon, therefore, all without the need to enabling emergency resources pond in a lot of situation, stronger uplink interference is therefore avoided, simultaneously, if fail for a long time to recover normal, also carrying out smoothly of communication can be ensured by starting emergency resources pond, visible, in general, the embodiment of the present invention can improve the integrated communication effect of network.
Accompanying drawing explanation
Fig. 1 is the D2D communication means flow chart that the embodiment of the present invention provides.
Fig. 2 is the UE structural representation that the embodiment of the present invention provides.
Embodiment
Fig. 1 is the D2D communication means first pass figure that the embodiment of the present invention provides.
As shown in Figure 1, this flow process comprises:
Step 101, adopts the UE of D2D transmission means to receive proprietary D2D resource information and the emergency resources pond information of network side distribution.
Step 102, described UE measures the performance number from the Received signal strength of network side, judges whether this performance number is greater than predetermined threshold value, if be greater than, determines that this UE is in center of housing estate position, otherwise, determine that this UE is in cell edge position.
Wherein, described predetermined threshold value passes through RRC information or SIB message arrangement by network side, or is arranged according to presetting method by UE.
In this step, namely UE by self positional information in the cell, can be in center of housing estate position or marginal position, is stored in default memory space.
Step 103, when described UE is when default exception condition appears in the communication with network side and described UE is in center of housing estate position, determine whether the duration that described UE is in default exception condition reaches preset duration, when reaching preset duration, described UE utilizes described emergency resources pond to carry out D2D communication.
Wherein, described preset state can comprise: RRC connection establishment is failed or RRC is rebuilding or UE can not receive uplink authorization.
In this step, can determine whether the duration that described UE is in default exception condition reaches preset duration by timer, particularly:
Start timer, when described UE departs from the exception condition preset, expiration timer, if timer expiry, then determines that the duration that UE is in default exception condition reaches preset duration; Wherein, the timing length of described timer is described preset duration.
Wherein, the timing length of described timer passes through RRC information or SIB message arrangement by network side, or is arranged according to presetting method by UE.
Visible, in method shown in Fig. 1, for the D2DUE being in center of housing estate, when there are abnormal conditions in it, these abnormal conditions are only had to continue scheduled duration, just can start emergency resources pond, because the abnormal conditions that the heart occurs in the cell all can be recovered usually very soon, therefore, all without the need to enabling emergency resources pond in a lot of situation, therefore stronger uplink interference is avoided, simultaneously, if fail for a long time to recover normal, also carrying out smoothly of communication can be ensured by starting emergency resources pond, visible, in general, the embodiment of the present invention can improve the integrated communication effect of network.
Further, the embodiment of the present invention proposes, and when described UE occurs default exception condition in the communication with network side, if described UE is in cell edge position, then described UE can enable described emergency resources pond immediately and carries out D2D communication.When the abnormal conditions of UE occur in cell edge, because the D2DUE transmitting power of cell edge is less, network side does not receive the data that D2DUE sends, therefore, even if network and D2DUE use same asset simultaneously, very large interference can't be produced, therefore, for the UE being in cell edge position, if it occurs exception condition, emergency resources pond can be enabled immediately and carry out D2D communication.
Visible, the embodiment of the present invention is by identifying UE position in the cell, namely identify that UE is in center or is in marginal position, UE for diverse location adopts different strategies to enable emergency resources pond, can carry out smoothly in the communication of D2DUE ensureing to occur abnormal conditions and reduce disturb between average out, thus improve the integrated communication effect of network.
Fig. 2 is the UE structural representation that the embodiment of the present invention provides.
As shown in Figure 2, this UE comprises communication resource acquisition module 201, location identification module 202 and D2D communication module 203.
Communication resource acquisition module 201, for receiving proprietary D2D resource information and the emergency resources pond information of network side distribution.
Location identification module 202, for measuring the performance number of the Received signal strength from network side, judges whether this performance number is greater than predetermined threshold value, if be greater than, determines that this UE is in center of housing estate position, otherwise, determine that this UE is in cell edge position.
D2D communication module 203, for when described UE the communication with network side occur preset exception condition and described UE be in center of housing estate position time, determine whether the duration that described UE is in default exception condition reaches preset duration, when reaching preset duration, described UE utilizes described emergency resources pond to carry out D2D communication.
D2D communication module 202, may be used for when described UE occurs in the communication with network side the exception condition preset, if described UE is in cell edge position, then described UE utilizes described emergency resources pond to carry out D2D communication.
D2D communication module 202, may be used for starting timer, and when described UE departs from the exception condition preset, expiration timer, if timer expiry, then determines that the duration that UE is in default exception condition reaches preset duration; Wherein, the timing length of described timer is described preset duration.
The timing length of described timer passes through RRC information or SIB message arrangement by network side, or is arranged according to presetting method by UE;
Or described predetermined threshold value passes through RRC information or SIB message arrangement by network side, or is arranged according to presetting method by UE.
Described preset state comprises: RRC connection establishment is failed or RRC is rebuilding or UE can not receive uplink authorization.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within the scope of protection of the invention.
Claims (10)
1. equipment is to a devices communicating method, it is characterized in that, the method comprises:
Employing equipment receives proprietary D2D resource information and the emergency resources pond information of network side distribution to the UE of equipment (D2D) transmission means;
Described UE measures the performance number from the Received signal strength of network side, judges whether this performance number is greater than predetermined threshold value, if be greater than, judges that this UE is in center of housing estate position, otherwise, judge that this UE is in cell edge position;
When there is in the communication with network side the exception condition preset in described UE, judge whether described UE is in center of housing estate position, if, judge whether the duration that described UE is in default exception condition reaches preset duration, when reaching preset duration, described UE utilizes described emergency resources pond to carry out D2D communication.
2. method according to claim 1, is characterized in that, when described UE occurs in the communication with network side the exception condition preset, if described UE is in cell edge position, then described UE utilizes described emergency resources pond to carry out D2D communication.
3. method according to claim 1 and 2, is characterized in that, determines whether duration that described UE is in default exception condition reaches preset duration and comprise:
Start timer, when described UE departs from the exception condition preset, expiration timer, if timer expiry, then determines that the duration that UE is in default exception condition reaches preset duration;
Wherein, the timing length of described timer is described preset duration.
4. method according to claim 3, is characterized in that,
The timing length of described timer passes through RRC information or SIB message arrangement by network side, or is arranged according to presetting method by UE;
Or described predetermined threshold value passes through RRC information or SIB message arrangement by network side, or is arranged according to presetting method by UE.
5. method according to claim 1, is characterized in that, described preset state comprises: RRC connection establishment is failed or RRC is rebuilding or UE can not receive uplink authorization.
6. a subscriber equipment (UE), is characterized in that, this UE comprises communication resource acquisition module, location identification module and D2D communication module;
Described communication resource acquisition module, for receiving proprietary D2D resource information and the emergency resources pond information of network side distribution;
Described location identification module, for measuring the performance number of the Received signal strength from network side, judges whether this performance number is greater than predetermined threshold value, if be greater than, determines that this UE is in center of housing estate position, otherwise, determine that this UE is in cell edge position;
Described D2D communication module, for when described UE the communication with network side occur preset exception condition and described UE be in center of housing estate position time, determine whether the duration that described UE is in default exception condition reaches preset duration, when reaching preset duration, described UE utilizes described emergency resources pond to carry out D2D communication.
7. UE according to claim 6, is characterized in that,
Described D2D communication module, for when described UE is when default exception condition appears in the communication with network side and described UE is in cell edge position, utilizes described emergency resources pond to carry out D2D communication.
8. the UE according to claim 6 or 7, is characterized in that,
Described D2D communication module, for starting timer, when described UE departs from the exception condition preset, expiration timer, if timer expiry, then determines that the duration that UE is in default exception condition reaches preset duration; Wherein, the timing length of described timer is described preset duration.
9. UE according to claim 8, is characterized in that,
The timing length of described timer passes through RRC information or SIB message arrangement by network side, or is arranged according to presetting method by UE;
Described predetermined threshold value passes through RRC information or SIB message arrangement by network side, or is arranged according to presetting method by UE.
10. UE according to claim 6, is characterized in that, described preset state comprises: RRC connection establishment is failed or RRC is rebuilding or UE can not receive uplink authorization.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410569300.1A CN105530595B (en) | 2014-10-22 | 2014-10-22 | A kind of equipment is to equipment communication means and device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410569300.1A CN105530595B (en) | 2014-10-22 | 2014-10-22 | A kind of equipment is to equipment communication means and device |
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| CN105530595A true CN105530595A (en) | 2016-04-27 |
| CN105530595B CN105530595B (en) | 2019-02-12 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108449736A (en) * | 2018-02-27 | 2018-08-24 | 努比亚技术有限公司 | A kind of data transmission method, terminal and computer readable storage medium |
| CN111629438A (en) * | 2019-02-27 | 2020-09-04 | 华为技术有限公司 | Resource allocation method and device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013181421A2 (en) * | 2012-05-31 | 2013-12-05 | Interdigital Patent Holdings, Inc. | Method and apparatus for device-to-device (d2d) mobility in wireless systems |
| WO2014047905A1 (en) * | 2012-09-28 | 2014-04-03 | Telefonaktiebolaget L M Ericsson (Publ) | Method for d2d radiocommunication |
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2014
- 2014-10-22 CN CN201410569300.1A patent/CN105530595B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013181421A2 (en) * | 2012-05-31 | 2013-12-05 | Interdigital Patent Holdings, Inc. | Method and apparatus for device-to-device (d2d) mobility in wireless systems |
| WO2014047905A1 (en) * | 2012-09-28 | 2014-04-03 | Telefonaktiebolaget L M Ericsson (Publ) | Method for d2d radiocommunication |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108449736A (en) * | 2018-02-27 | 2018-08-24 | 努比亚技术有限公司 | A kind of data transmission method, terminal and computer readable storage medium |
| CN111629438A (en) * | 2019-02-27 | 2020-09-04 | 华为技术有限公司 | Resource allocation method and device |
| CN111629438B (en) * | 2019-02-27 | 2023-09-26 | 华为技术有限公司 | Resource allocation method and device |
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| CN105530595B (en) | 2019-02-12 |
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