CN102932883B - A kind of method and system for realizing DRX - Google Patents
A kind of method and system for realizing DRX Download PDFInfo
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- CN102932883B CN102932883B CN201110231541.1A CN201110231541A CN102932883B CN 102932883 B CN102932883 B CN 102932883B CN 201110231541 A CN201110231541 A CN 201110231541A CN 102932883 B CN102932883 B CN 102932883B
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- 238000000034 method Methods 0.000 title claims abstract description 29
- 230000011664 signaling Effects 0.000 claims abstract description 55
- 230000007958 sleep Effects 0.000 claims abstract description 25
- 230000005540 biological transmission Effects 0.000 claims abstract description 13
- 230000005059 dormancy Effects 0.000 claims abstract description 3
- 238000012790 confirmation Methods 0.000 claims description 7
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000012544 monitoring process Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 230000002618 waking effect Effects 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
- H04W52/0229—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a wanted signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0212—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is leader and terminal is follower
-
- 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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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a kind of method and system for realizing DRX, UE can receive the downlink data and/or downlink signaling that network side transmits in subframe is paged, and be sent when the downlink data and/or downlink signaling are during the Paging subframes that the UE is monitored are located at the dormancy of DRX controls.The present invention realizes DRX technology, allow network side during UE DRX sleep, the downlink data and/or signaling of the UE are directed to by paging sub-frame transmissions, the chance that can so utilize UE to be waken up because monitoring Paging subframes, the downlink data of caching and/or signaling are passed into UE in time, and without being reached when next On Duration cycles, data can be issued into UE in time, make UE more power savings, and the experience of user can be improved, the data volume of network side caching can also be reduced.
Description
Technical Field
The present invention relates to the field of communications, and in particular, to a method and system for implementing Discontinuous Reception (DRX).
Background
The DRX mechanism, which is simply called a User Equipment (UE), stops monitoring a Physical Downlink Control Channel (PDCCH) for a period of time, and thus, the DRX mechanism has an effect of saving power.
DRX is divided into two categories: one of the DRX is IDLE (IDLE) DRX. At this time, there is no Radio Resource Control (RRC) connection and no user's proprietary resources. If the UE is to listen to the user data channel, the connected state must be entered first from the IDLE state.
Another DRX is non-idle (ACTIVE) DRX, i.e. DRX where the UE is in RRC CONNECTED (RRC-CONNECTED) state. ACTIVE DRX may optimize system resource configuration and more importantly may save power consumption of the UE.
In fact, the connected-state UE still requires to monitor Paging (Paging) to learn the system message modification information, so it is possible for one connected-state UE to maintain two DRX procedures. A general system may coordinate the configuration of the Paging cycle and the DRX cycle such that the UE monitors a Paging channel during an On Duration (active period) cycle to avoid the UE waking up from a sleep state to read Paging.
With the wide application of smart UEs and the abundance of service applications, in the case of more complicated service characteristics, a longer DRX cycle needs to be introduced to make the UE more power-saving. If the longDRXcycle (long DRX cycle) is set to be large (e.g. several tens of seconds) relative to the cycle of Paging, it is difficult to perform coordinated configuration for the longDRXcycle and the cycle of Paging, and thus Paging may occur in a sleep period of the UE under DRX control, so that the UE needs to wake up in the sleep period to read the Paging, and a Paging subframe does not contain downlink signals or data for the UE except for Paging signaling, which is not favorable for UE power saving.
Disclosure of Invention
In view of the above, the present invention is directed to a method and system for implementing DRX, so that a UE is more power-saving.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a method of implementing DRX, the method comprising:
the method comprises the steps that UE receives downlink data and/or downlink signaling transmitted in Paging subframes by a network side, and the downlink data and/or the downlink signaling are transmitted when Paging subframes monitored by the UE are positioned in a DRX control sleep period.
The method also comprises that the UE reads downlink data and signaling aiming at the UE in the Paging subframe:
when the DRX process is operated according to the DRX configuration parameters, the UE reads Paging information in a Paging subframe to which the UE belongs according to a Paging cycle when the UE wakes up, and checks the data and the signaling aiming at the UE in the Paging subframe.
The process of reading the paging information by the UE comprises the following steps:
besides searching a physical downlink control channel PDCCH (physical downlink control channel) which carries Paging scheduling information and is scrambled by a temporary identifier of a Paging radio network side and a P-RNTI mask, the UE also needs to search a PDCCH space and find whether the PDCCH which is identified by the UE with a cell temporary identifier C-RNTI mask exists so as to obtain the resource position of a Physical Downlink Shared Channel (PDSCH) sent to the UE, and simultaneously monitors other control channels and obtains special downlink control information.
The method further comprises the following steps:
configuring specific DRX configuration parameters according to service characteristics, and receiving the DRX configuration parameters transmitted through DRX configuration signaling by UE;
and when the DRX configuration parameters are configured, judging whether the DRX period is matched with the Paging period or not according to the length of the Paging period of the UE.
When the DRX period is not matched with the Paging period, the UE receives a mismatch notification sent by a network side through signaling; or,
the operation of judging whether the DRX period is matched with the Paging period is performed by the UE autonomously.
The UE also receives a notification sent by the network side through signaling: downlink data and signaling for the UE are transmitted in the Paging subframe.
A system for realizing DRX comprises a dormancy confirming unit and a transmission unit; wherein,
the sleep confirmation unit is used for confirming that the paging subframe monitored by the UE is positioned in the sleep period of DRX control;
the transmission unit is configured to transmit downlink data and/or downlink signaling in the paging subframe of the UE when the sleep confirmation unit confirms that the paging subframe monitored by the UE is located in the sleep period of DRX control.
The UE is used for reading downlink data and signaling aiming at the UE in the Paging subframe:
when the DRX process is operated according to the DRX configuration parameters, the UE reads Paging information in a Paging subframe to which the UE belongs according to a Paging cycle when the UE wakes up, and checks the data and the signaling aiming at the UE in the Paging subframe.
When the UE reads the paging information, the UE is configured to:
besides searching the PDCCH of the P-RNTI mask for bearing the Paging scheduling information, the PDCCH space needs to be searched, and whether the PDCCH with the identity C-RNTI mask exists or not is found so as to obtain the resource position of the PDSCH sent to the PDCCH, and other control channels are monitored simultaneously to obtain the special downlink control information.
The transmission unit is further configured to:
configuring specific DRX configuration parameters according to service characteristics, and sending the DRX configuration parameters to UE through DRX configuration signaling;
and when the DRX configuration parameters are configured, judging whether the DRX period is matched with the Paging period or not according to the length of the Paging period of the UE.
When the DRX cycle does not match the Paging cycle, the transmitting unit is further configured to signal the UE of the mismatch status; or,
the UE is used for autonomously executing the operation of judging whether the DRX period is matched with the Paging period.
The transmission unit is further configured to notify the UE of: downlink data and signaling for the UE may be transmitted in the Paging subframe.
The invention realizes the DRX technology, allows the network side to transmit the downlink data and/or signaling aiming at the UE through Paging during the DRX sleep period of the UE, so that the cached downlink data and/or signaling can be transmitted to the UE in time by using the awakening opportunity of the UE due to the Paging subframe, the UE does not need to wait for the arrival of the next On Duration period, the data can be transmitted to the UE in time, the UE is more power-saving, the user experience can be improved, and the data amount cached by the network side can be reduced.
Drawings
Fig. 1 is a schematic diagram of implementing DRX according to an embodiment of the present invention;
fig. 2 is a simplified flow chart of implementing DRX according to an embodiment of the present invention;
fig. 3 is a system diagram for implementing DRX according to an embodiment of the present invention.
Detailed Description
In practical application, if a Paging subframe monitored by the UE is located in a Sleep period of DRX control, the network side may transmit downlink data or downlink signaling in the Paging subframe for the UE without considering whether the UE is in the Sleep period of DRX; the UE may read downlink data and signaling for the UE in the Paging subframe.
Specifically, according to the characteristics of the service operated by the UE, the network side determines to configure DRX configuration parameters for the UE. The service characteristics comprise data transmission periodicity, data packet size, time delay requirements and the like; the DRX configuration parameters comprise DRX cycle and the like.
And the network side can judge whether the DRX mechanism is suitable to be configured or not according to the service characteristics, and specific DRX configuration parameters, such as a Long DRX Cycle (Long DRX Cycle), a short DRX Cycle (short DRX Cycle), an activation timer, a retransmission timer, the number of times of the short DRX Cycle, and the like, and send the DRX configuration parameters to the UE through a DRX configuration signaling.
When configuring the DRX cycle, the network side may determine whether the DRX cycle (long DRX cycle and/or short DRX cycle) is matched with the Paging cycle according to the length of the Paging cycle of the UE, that is, whether the Paging subframe is located in an On Duration period in the DRX mechanism, and if so, confirm the matching; otherwise, a mismatch is confirmed. When there is no match, the network side may notify the UE of the mismatch status through signaling.
And the UE receives a DRX configuration signaling sent by the network side, starts a DRX process in the UE according to the configured DRX configuration parameters, and learns that the current DRX period is not matched with the Paging period according to the indication of the network side.
Of course, the UE may autonomously determine whether the DRX cycle matches the Paging cycle instead of being instructed by the network.
When the DRX process is operated according to the DRX configuration parameters, the UE can read Paging information in a Paging subframe of the UE according to a Paging cycle when the UE wakes up; and, the UE also needs to check whether there is data and signaling for itself in the Paging subframe.
Specifically, the UE searches a PDCCH carrying Paging scheduling information of a P-RNTI (Paging Radio network temporary identifier) mask (scrambling), and also needs to search a PDCCH space to find whether the PDCCH of a Cell Radio network temporary identifier (Cell Radio network temporary identifier) mask exists, so as to obtain a resource location of a Physical Downlink Shared Channel (PDSCH) transmitted to the UE, and also can monitor other control channels to obtain dedicated downlink control information.
The invention is described below with reference to the following embodiments and the accompanying drawings.
The UE initiates a service. According to the characteristics of the service (such as data transmission periodicity, delay requirement and the like), the network side decides to configure DRX configuration parameters for the UE;
the network side configures DRX configuration parameters adapting to the characteristics of service data and sends the DRX configuration parameters to the UE through DRX configuration signaling. In the configured DRX configuration parameters, short DRX Cycle is 10ms, and Long DRX Cycle is 521 ms.
When configuring the DRX Cycle, the network side finds that the Paging Cycle of the UE is 320ms, determines that the DRX Cycle and the Paging Cycle are not matched, and adds an indication bit in a DRX configuration signaling to inform the UE of the mismatch state, and may further indicate: the network side transmits downlink data and/or signaling to the UE in the Paging subframe.
The UE receives a DRX configuration signaling sent by a network side, starts a DRX process in the UE according to DRX configuration parameters carried in the DRX configuration signaling, and learns that a current DRX period is not matched with a Paging period according to an instruction of the network side.
Of course, the network side may not actively add an indicator bit indicating that the DRX Cycle and Paging Cycle do not match in the configuration signaling, but the UE compares the DRX Cycle and the Paging Cycle obtained before when receiving the DRX configuration parameter to confirm whether the DRX Cycle and the Paging Cycle match. Once a mismatch is found, the UE confirms that the network side may transmit downlink data and/or signaling in the Paging subframe.
When the DRX process is executed according to the DRX configuration parameters, the UE may read Paging information in a Paging subframe to which the UE belongs according to a Paging cycle when waking up, and meanwhile, the UE needs to check whether data and signaling for the UE exist in the subframe. Specifically, the UE needs to search the PDCCH carrying Paging scheduling information of the P-RNTI mask, and also needs to search the PDCCH space to find whether there is a PDCCH identifying the C-RNTI mask, so as to obtain the resource location of the PDSCH transmitted to the UE, and meanwhile, may also monitor other control channels, and obtain dedicated downlink control information.
As shown in fig. 1, the Paging subframes of the UE are not necessarily all in the active period of DRX, and if the Paging subframes are in the active period of DRX, the processing is performed in the normal manner. For example, when there is downlink data and signaling, the network side immediately sends the downlink data and signaling to the UE.
Specifically, if the Paging subframe is not in the active period of DRX, which means that the UE should be in the sleep period according to the DRX mechanism, the UE must wake up to receive Paging, and the network side also knows that the UE will wake up at this time, so if there is buffered downlink data and/or signaling, the network side may send the buffered downlink data and/or signaling to the UE in the Paging subframe.
As can be seen from the above description, the operation idea of the present invention for implementing DRX may be represented as a flow shown in fig. 2, where the flow includes the following steps:
step 210: confirming that the paging subframe monitored by the UE is in the sleep period of DRX control.
Step 220: transmitting downlink data and/or downlink signaling in a paging subframe for the UE.
In order to ensure that the technical description and the operation idea can be successfully realized, the arrangement shown in fig. 3 can be carried out. Referring to fig. 3, fig. 3 is a system diagram for implementing DRX according to an embodiment of the present invention, where the system includes a sleep confirmation unit and a transmission unit that are connected to each other.
In practical applications, the sleep confirmation unit can confirm that the paging subframe monitored by the UE is in the sleep period of DRX control. The transmission unit may transmit downlink data and/or downlink signaling in the paging subframe of the UE when the sleep confirmation unit confirms that the paging subframe monitored by the UE is in the sleep period of DRX control.
In summary, regardless of the method or the system, the present invention implements the DRX technique, which allows the network side to transmit downlink data and/or signaling for the UE through Paging during the DRX sleep period of the UE, so that the UE can transmit the buffered downlink data and/or signaling to the UE in time by using the chance that the UE wakes up due to the Paging subframe, instead of waiting for the next OnDuration period to arrive, and can transmit the data to the UE in time, so that the UE is more power-efficient, the user experience can be improved, and the amount of data buffered at the network side can be reduced.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.
Claims (8)
1. A method for implementing Discontinuous Reception (DRX), the method comprising:
the method comprises the steps that UE receives downlink data and/or downlink signaling transmitted by a network side in a Paging subframe, and the downlink data and/or the downlink signaling are transmitted when a Paging subframe monitored by the UE is positioned in a DRX control sleep period;
the UE reads downlink data and signaling aiming at the UE in the Paging subframe: when the DRX process is operated according to the DRX configuration parameters, whether the DRX period is matched with the Paging period or not is judged according to the length of the Paging period of the UE, if not, the UE reads Paging information in a Paging subframe to which the UE belongs according to the Paging period when the UE wakes up, and the data and the signaling aiming at the UE in the Paging subframe are checked;
the process of reading the paging information by the UE comprises the following steps: besides searching a Physical Downlink Control Channel (PDCCH) which carries Paging scheduling information and is scrambled by a temporary identifier of a Paging radio network side and a cell-RNTI mask, the UE also needs to search a PDCCH space and find whether the PDCCH which identifies a cell temporary identifier C-RNTI mask by the UE exists so as to acquire the resource position of a Physical Downlink Shared Channel (PDSCH) sent to the UE, and simultaneously monitors other control channels and acquires special downlink control information.
2. The method of claim 1, further comprising:
and configuring specific DRX configuration parameters according to the service characteristics, and receiving the DRX configuration parameters sent by DRX configuration signaling by the UE.
3. The method of claim 2,
when the DRX period is not matched with the Paging period, the UE receives a mismatch notification sent by a network side through signaling; or,
the operation of judging whether the DRX period is matched with the Paging period is performed by the UE autonomously.
4. The method of claim 3, wherein the UE further receives a notification sent by the network side through signaling: downlink data and signaling for the UE are transmitted in the Paging subframe.
5. A system for realizing DRX is characterized in that the system comprises a dormancy confirming unit and a transmission unit; wherein,
the sleep confirmation unit is used for confirming that the paging subframe monitored by the UE is positioned in the sleep period of DRX control;
the transmission unit is configured to transmit downlink data and/or downlink signaling in a paging subframe of the UE when the sleep confirmation unit confirms that the paging subframe monitored by the UE is located in a sleep period of DRX control;
the UE is used for reading downlink data and signaling aiming at the UE in the Paging subframe: when the DRX process is operated according to the DRX configuration parameters, whether the DRX period is matched with the Paging period or not is judged according to the length of the Paging period of the UE, if not, the UE reads Paging information in a Paging subframe to which the UE belongs according to the Paging period when the UE wakes up, and the data and the signaling aiming at the UE in the Paging subframe are checked;
when the UE reads the paging information, the UE is configured to: besides searching the PDCCH of the P-RNTI mask for bearing the Paging scheduling information, the PDCCH space needs to be searched, and whether the PDCCH with the identity C-RNTI mask exists or not is found so as to obtain the resource position of the PDSCH sent to the PDCCH, and other control channels are monitored simultaneously to obtain the special downlink control information.
6. The system of claim 5, wherein the transmission unit is further configured to:
and configuring specific DRX configuration parameters according to the service characteristics, and sending the DRX configuration parameters to the UE through a DRX configuration signaling.
7. The system of claim 6,
when the DRX cycle does not match the Paging cycle, the transmitting unit is further configured to signal the UE of the mismatch status; or,
the UE is used for autonomously executing the operation of judging whether the DRX period is matched with the Paging period.
8. The system of claim 7, wherein the transmission unit is further configured to signal to the UE: downlink data and signaling for the UE are transmitted in the Paging subframe.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110231541.1A CN102932883B (en) | 2011-08-12 | 2011-08-12 | A kind of method and system for realizing DRX |
| PCT/CN2012/077164 WO2013023483A1 (en) | 2011-08-12 | 2012-06-19 | Method and system for implementing drx |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201110231541.1A CN102932883B (en) | 2011-08-12 | 2011-08-12 | A kind of method and system for realizing DRX |
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| CN102932883A CN102932883A (en) | 2013-02-13 |
| CN102932883B true CN102932883B (en) | 2018-03-16 |
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| WO (1) | WO2013023483A1 (en) |
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| CN107295671A (en) * | 2016-03-31 | 2017-10-24 | 中兴通讯股份有限公司 | The communication means and device of a kind of Downlink Control Information |
| CN108616901B (en) * | 2016-12-12 | 2020-09-01 | 维沃移动通信有限公司 | Terminal calling method, terminal and network equipment |
| CN108616902B (en) * | 2016-12-14 | 2020-03-17 | 维沃移动通信有限公司 | Discontinuous reception method, configuration method, terminal, base station and configuration system |
| CN108668359B (en) | 2017-03-28 | 2022-07-15 | 中兴通讯股份有限公司 | Paging method, paging monitoring method, device and equipment |
| MY204777A (en) * | 2017-05-04 | 2024-09-12 | Guangdong Oppo Mobile Telecommunications Corp Ltd | Wireless communication method and device |
| CN108990150B (en) * | 2017-06-05 | 2022-02-18 | 普天信息技术有限公司 | Paging processing method |
| CN109429372B (en) * | 2017-07-05 | 2023-08-11 | 西安中兴新软件有限责任公司 | Method, equipment and system for establishing communication link |
| CN109756523B (en) * | 2017-08-24 | 2021-11-19 | 中国移动通信有限公司研究院 | Data caching method and device and SCEF entity |
| RU2747388C1 (en) * | 2017-09-07 | 2021-05-04 | Гуандун Оппо Мобайл Телекоммьюникейшнз Корп., Лтд. | Discontinuous reception method, terminal device and network device |
| CN109587772A (en) * | 2017-09-29 | 2019-04-05 | 电信科学技术研究院 | A kind of control method of business processing, network side equipment and user equipment |
| EP4061029A4 (en) * | 2019-11-12 | 2023-12-20 | LG Electronics Inc. | Sidelink drx-associated operation method for ue in wireless communication system |
| CN115022815B (en) * | 2021-03-05 | 2023-07-21 | 维沃移动通信有限公司 | Method, device and electronic device for receiving multicast service |
| CN115696513A (en) * | 2021-07-22 | 2023-02-03 | 维沃移动通信有限公司 | Paging monitoring method, device, communication equipment, storage medium and system |
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| WO2013023483A1 (en) | 2013-02-21 |
| CN102932883A (en) | 2013-02-13 |
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