CN109246625B - Cluster discontinuous reception scheduling method and system - Google Patents

Cluster discontinuous reception scheduling method and system Download PDF

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CN109246625B
CN109246625B CN201710421644.1A CN201710421644A CN109246625B CN 109246625 B CN109246625 B CN 109246625B CN 201710421644 A CN201710421644 A CN 201710421644A CN 109246625 B CN109246625 B CN 109246625B
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CN109246625A (en
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鲜柯
李川
王亮
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Chengdu TD Tech Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H04W4/08—User group management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving 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 master and terminal is slave
    • H04W52/0219—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave where the power saving management affects multiple terminals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/121—Wireless traffic scheduling for groups of terminals or users
    • 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

Abstract

The application discloses a cluster discontinuous reception scheduling method and a system, wherein the method comprises the following steps: when a base station establishes a trunking user, activating semi-persistent scheduling (SPS) resources for the trunking user in a trunking service channel (GTCH); the base station determines that the cluster of the cluster user discontinuously receives the GDRX control parameter according to the SPS resource activation time of the cluster user, and periodically transmits the GDRX control parameter to the cluster user through a cluster paging control channel (GPCCH) according to a preset transmission period; the base station sends trunking service data to the trunking users on the logical channel within the scheduling time domain range of the logical channel defined by the GDRX control parameter; the logical channels comprise a GTCH channel and a GCCH channel; and when the trunking user is in an idle listening state, listening to trunking service data on the logical channel only within a scheduling time domain range of the logical channel defined by the GDRX control parameter. By adopting the invention, the power consumption of the idle monitoring state cluster service terminal can be effectively reduced.

Description

Cluster discontinuous reception scheduling method and system
Technical Field
The present invention relates to mobile communication technologies, and in particular, to a method and a system for cluster discontinuous reception (GDRX) scheduling.
Background
The LTE private network trunking system mainly comprises three logic channels, namely a trunking control channel (GCCH), a trunking service channel (GTCH) and a trunking paging control channel (GPCCH), wherein the GCCH is mainly used for transmitting control plane data of trunking users, the GTCH is mainly used for transmitting user plane data of the trunking users, and the GPCCH main channel is used for transmitting paging data of the trunking users.
In the LTE network, for a common unicast service, the terminal states are divided into an idle state and a connected state, and for a terminal transmitting a trunking service, an idle monitoring state is added. The idle state refers to a state that the terminal is in an RRC unconnected state and does not have any data service, the connected state refers to a state that the terminal is in an RRC connected state, and the idle listening state refers to a state that the terminal is in an RRC unconnected state but is listening to and receiving trunking service data.
When the LTE private network trunking system has trunking voice service, the base station mainly adopts semi-static scheduling to carry out resource allocation. At this time, the terminal is mainly in an idle monitoring state to receive the trunking voice data, when the trunking voice service frequency is too high, the power consumption of the terminal is increased, and the standby time and the service time of the terminal are finally affected. The specific reason is as follows: the current DRX mechanism only supports an idle state and a connected state, while a cluster system is mainly in an idle monitoring state, the difference between the idle state and the connected state is that a terminal in the idle state does not receive service data at all, and at the moment, the terminal only needs to monitor paging and system messages without paying attention to the service data and without DRX algorithm parameters. Therefore, the DRX power saving scheme of the LTE system is not suitable for the idle listening state of the trunking service.
At present, no power saving scheme of idle monitoring state terminal suitable for trunking service is proposed.
Disclosure of Invention
In view of this, the main objective of the present invention is to provide a method and a system for cluster discontinuous reception scheduling, which can effectively reduce the power consumption of an idle listening state cluster service terminal.
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
a cluster discontinuous reception scheduling method comprises the following steps:
when a base station establishes a trunking user, activating semi-persistent scheduling (SPS) resources for the trunking user in a trunking service channel (GTCH);
the base station determines that the cluster of the cluster user discontinuously receives the GDRX control parameter according to the SPS resource activation time of the cluster user, and periodically transmits the GDRX control parameter to the cluster user through a cluster paging control channel (GPCCH) according to a preset transmission period;
the base station sends trunking service data to the trunking users on the logical channel within the scheduling time domain range of the logical channel defined by the GDRX control parameter; the logical channels comprise a GTCH channel and a GCCH channel;
and when the trunking user is in an idle listening state, listening to trunking service data on the logical channel only within a scheduling time domain range of the logical channel defined by the GDRX control parameter.
A clustered discontinuous reception scheduling system, comprising:
the base station is used for activating semi-persistent scheduling (SPS) resources on a trunking service channel (GTCH) for trunking users when the trunking users are established; determining cluster discontinuous reception GDRX control parameters of the cluster users according to SPS resource activation time of the cluster users, and periodically issuing the GDRX control parameters to the cluster users through a cluster paging control channel GPCCH according to a preset issuing period; sending trunking service data to the trunking users on the logical channel within a scheduling time domain range of the logical channel defined by the GDRX control parameter; the logical channels comprise a GTCH channel and a GCCH channel;
and the trunking user is used for monitoring trunking service data on the logical channel only in the scheduling time domain range of the logical channel limited by the GDRX control parameter when the user is in an idle monitoring state.
In summary, according to the trunking discontinuous reception scheduling method and system provided by the present invention, after the trunking user is successfully established and the SPS resource is activated, the base station needs to determine the GDRX algorithm parameter and periodically issue the GDRX algorithm parameter through the GPCCH channel, and after the terminal side receives the GDRX algorithm parameter through the GPCCH channel, if the terminal side is currently in the idle listening state, the GDRX mechanism is started, so that the sleep wakeup processing can be performed according to the GDRX algorithm parameter, and therefore, the power consumption of the trunking service terminal in the idle listening state can be effectively reduced.
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FIG. 1 is a schematic flow chart of a method according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a system according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic flowchart of a method according to an embodiment of the present invention, and as shown in fig. 1, the method for cluster discontinuous reception scheduling implemented in the embodiment mainly includes:
step 101, when a base station establishes a trunking user, activating semi-persistent scheduling (SPS) resources for the trunking user on a trunking service channel (GTCH).
The specific implementation of this step is known to those skilled in the art and will not be described herein.
And step 102, the base station determines the GDRX control parameter of the trunking user according to the SPS resource activation time of the trunking user, and periodically transmits the GDRX control parameter to the trunking user through the GPCCH according to a preset transmission period.
In this step, after the cluster user is successfully established and the SPS resource is activated, the base station needs to determine the GDRX algorithm parameter and periodically issue the GDRX algorithm parameter so that the cluster user in the idle listening state can start the GDRX mechanism according to the received GDRX algorithm parameter, that is, the cluster service data is listened on the logical channel according to the GDRX algorithm parameter.
In this step, the issuing period is used to control the issuing frequency of the GDRX control parameter, and specifically, a suitable value may be set by a person skilled in the art according to actual needs.
Preferably, the GDRX control parameters specifically include: a GDRX duration timer, a GDRX inactivity timer, a GDRX scheduling period, and a GDRX start time offset.
The GDRX duration timer is configured to control a duration of scheduling a trunking service at GTCH and GCCH channels by a trunking user of a base station, and control a terminal-side wake-up duration, where a value range of the GDRX duration timer is [1ms, 20ms ], and specifically, a suitable value may be set by a person skilled in the art according to actual needs, for example, the GDRX duration timer may be 2 ms.
The GDRX inactivity timer is used for controlling the duration of cluster service scheduling of the cluster users on the GTCH and GCCH channels, and simultaneously controlling the terminal side wake-up duration, and when the base station schedules the GTCH/GCCH channel cluster service data during the duration timer, the timer needs to be started or restarted. The value range can be [1ms, 20ms ], and specifically, a person skilled in the art can set an appropriate value according to actual needs, for example, the value range can be 1 ms.
The GDRX scheduling period represents a GDRX persistent timer start period, and a value range of the GDRX persistent timer start period may be {10ms,8192ms }, and specifically, a suitable value may be set by a person skilled in the art according to actual needs, for example, the GDRX scheduling period may be set to 20 ms.
The GDRX start time offset represents a start time offset of a GDRX duration timer in a GDRX scheduling period, and specifically may be obtained according to an SPS resource activation time of the cluster user and a preset SPS resource activation time and GDRX start time offset mapping table.
The SPS resource activation time and GDRX start time offset mapping table is used to indicate a mapping relationship between SPS resource activation time and GDRX start time offset, and may be specifically set to the mapping relationship shown in table 1, for example:
Figure BDA0001315087280000041
Figure BDA0001315087280000051
TABLE 1
103, the base station sends trunking service data to the trunking users on the logical channel within the scheduling time domain range of the logical channel defined by the GDRX control parameter; the logical channels include a GTCH channel and a GCCH channel.
Specifically, the scheduling time domain range is a lifetime of the GDRX duration timer or the GDRX inactivity timer.
Wherein the starting time t1 of the GDRX continuous timeriIs Ti+ StartOffset. Wherein, TiFor the start time of the ith GDRX scheduling period, StartOffset is the GDRX start time offset
The starting time or the restarting time of the GDRX inactivity timer is the time when the GDRX continuous timer has data to issue.
And 104, when the trunking user is in an idle listening state, listening to trunking service data on the logical channel only within a scheduling time domain range of the logical channel defined by the GDRX control parameter.
In this step, when the cluster user is in the idle listening state, the cluster user is in the awake state only within the scheduling time domain range of the logical channel defined by the GDRX control parameter. That is, the base station side can schedule the trunking service data on the GTCH and GCCH channels only during the validation of the GDRX duration timer or the GDRX inactivity timer, and the trunking user side can wake up and receive the trunking service data only during the validation of the GDRX duration timer or the GDRX inactivity timer. And when the GDRX duration timer and the GDRX inactivity timer both time out, the base station will stop scheduling the trunking service data in the GTCH channel and the GCCH channel, and the terminal will also enter the dormant period to stop receiving the trunking service data.
Further, if the trunking user deactivates SPS resources on the GTCH channel, it is necessary to close the two timers and stop starting any more, and stop issuing GDRX algorithm parameters through the GPCCH channel to ensure that the GDRX mechanism is enabled in the semi-persistent scheduling state. This object can be achieved in particular by the following method.
When the cluster user deactivates SPS resources at the GTCH, the base station and the cluster user close the timer used for indicating the scheduling time domain range in the GDRX control parameters, and the base station stops sending the GDRX control parameters to the cluster user periodically through the GPCCH.
Specifically, in the above method, when the base station issues the SPS resource deactivation indication, the base station turns off the timer in the GDRX control parameter for indicating the scheduling time domain range, and when the terminal receives the SPS deactivation indication, the terminal turns off the timer in the GDRX control parameter for indicating the scheduling time domain range.
According to the technical scheme, after the cluster user is successfully established and the SPS resources are activated, the GDRX algorithm parameters need to be determined and periodically issued through the GPCCH, after the GDRX algorithm parameters are received by the terminal side through the GPCCH, if the terminal side is in an idle monitoring state at present, a GDRX mechanism is started, and the sleep awakening processing is carried out according to the GDRX algorithm parameters, so that the purpose of reducing power consumption can be achieved.
Fig. 2 is a schematic structural diagram of a trunking discontinuous reception scheduling system corresponding to the foregoing method embodiment, as shown in fig. 2, the system includes: a base station and clustered users.
The base station is used for activating semi-persistent scheduling (SPS) resources on a trunking service channel (GTCH) for trunking users when the trunking users are established; determining cluster discontinuous reception GDRX control parameters of the cluster users according to SPS resource activation time of the cluster users, and periodically issuing the GDRX control parameters to the cluster users through a cluster paging control channel GPCCH according to a preset issuing period; sending trunking service data to the trunking users on the logical channel within a scheduling time domain range of the logical channel defined by the GDRX control parameter; the logical channels include a GTCH channel and a GCCH channel.
And the trunking user is used for monitoring trunking service data on the logical channel only in the scheduling time domain range of the logical channel limited by the GDRX control parameter when the user is in an idle monitoring state.
Preferably, the GDRX control parameters include:
a GDRX duration timer, a GDRX inactivity timer, a GDRX scheduling period, and a GDRX start time offset.
Preferably, the GDRX duration timer has a value range of [1ms, 20ms ], the GDRX inactivity timer has a value range of [1ms, 20ms ], and the GDRX start time offset is obtained according to the SPS resource activation time of the cluster user and a preset SPS resource activation time and GDRX start time offset mapping table.
Preferably, the SPS resource activation time and GDRX start time offset mapping table is:
Figure BDA0001315087280000071
preferably, the scheduling time domain range is the effective period of the GDRX duration timer or the GDRX inactivity timer, and the starting time t1 of the GDRX duration timeriIs Ti+ StartOffset, the start time or restart time of the GDRX inactivity timer is the time when the GDRX duration timer has data issue, wherein TiFor the start time of the ith GDRX scheduling period, StartOffset is the GDRX start time offset.
Preferably, the base station is further configured to close a timer used for indicating the scheduling time domain range in the GDRX control parameter when the SPS resource is deactivated by the trunking user in the GTCH, and stop periodically issuing the GDRX control parameter to the trunking user through the GPCCH.
The trunking user is further configured to close the timer in the GDRX control parameter for indicating the scheduling time domain range when the trunking user deactivates SPS resources at the GTCH.
In summary, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (6)

1. A cluster discontinuous reception scheduling method is characterized by comprising the following steps:
when a base station establishes a trunking user, activating semi-persistent scheduling (SPS) resources for the trunking user in a trunking service channel (GTCH);
the base station determines that the cluster of the cluster user discontinuously receives the GDRX control parameter according to the SPS resource activation time of the cluster user, and periodically transmits the GDRX control parameter to the cluster user through a cluster paging control channel (GPCCH) according to a preset transmission period;
the base station sends trunking service data to the trunking users on the logical channel within the scheduling time domain range of the logical channel defined by the GDRX control parameter; the logical channels comprise a GTCH channel and a GCCH channel;
when the cluster user is in an idle monitoring state, starting a GDRX mechanism, and monitoring cluster service data on the logical channel only within a scheduling time domain range of the logical channel defined by the GDRX control parameter;
when the cluster user deactivates SPS resources at a GTCH, the base station and the cluster user close a timer used for indicating the scheduling time domain range in the GDRX control parameters, and the base station stops sending the GDRX control parameters to the cluster user periodically through a GPCCH;
the GDRX control parameters include:
a GDRX duration timer, a GDRX inactivity timer, a GDRX scheduling period, and a GDRX start time offset;
the scheduling time domain range is the effective period of the GDRX duration timer or the GDRX inactivity timer, and the starting time t1 of the GDRX duration timeriIs Ti+ StartOffset, the start time or restart time of the GDRX inactivity timer is the time when the GDRX duration timer has data issue, wherein TiFor the start time of the ith GDRX scheduling period, StartOffset is the GDRX start time offset.
2. The method of claim 1, wherein the GDRX duration timer has a value range of [1ms, 20ms ], the GDRX inactivity timer has a value range of [1ms, 20ms ], and the GDRX start time offset is obtained according to the SPS resource activation time of the clustered user and a preset SPS resource activation time and GDRX start time offset mapping table.
3. The method as claimed in claim 2, wherein the SPS resource activation time and GDRX start time offset mapping table is:
SPS resource activation time, unit subframe GDRX start time offset, unit subframe 0 0 1 0 5 5 6 5 10 10 11 10 15 15 16 15
。
4. A trunking discontinuous reception scheduling system, comprising:
the base station is used for activating semi-persistent scheduling (SPS) resources on a trunking service channel (GTCH) for trunking users when the trunking users are established; determining cluster discontinuous reception GDRX control parameters of the cluster users according to SPS resource activation time of the cluster users, and periodically issuing the GDRX control parameters to the cluster users through a cluster paging control channel GPCCH according to a preset issuing period; sending trunking service data to the trunking users on the logical channel within a scheduling time domain range of the logical channel defined by the GDRX control parameter; the logical channels comprise a GTCH channel and a GCCH channel; the GDRX control parameters include: a GDRX duration timer, a GDRX inactivity timer, a GDRX scheduling period, and a GDRX start time offset; the scheduling time domain range is the effective period of the GDRX duration timer or the GDRX inactivity timer, and the starting time t1 of the GDRX duration timeriIs Ti+ StartOffset, the start time or restart time of the GDRX inactivity timer is the time when the GDRX duration timer has data issue, wherein TiFor the start time of the ith GDRX scheduling period, StartOffset is the GDRX start time offset; when the cluster user deactivates SPS resources at the GTCH, closing a timer used for indicating the scheduling time domain range in the GDRX control parameter, and stopping sending the GDRX control parameter to the cluster user periodically through the GPCCH;
the cluster user is used for starting a GDRX mechanism when the user is in an idle monitoring state, and monitoring cluster service data on the logical channel only in a scheduling time domain range of the logical channel limited by the GDRX control parameter; and when the SPS resources are deactivated at the GTCH by the user of the cluster, closing a timer used for indicating the scheduling time domain range in the GDRX control parameter.
5. The system of claim 4, wherein the GDRX on timer has a value range of [1ms, 20ms ], the GDRX off timer has a value range of [1ms, 20ms ], and the GDRX start time offset is obtained according to the SPS resource activation time of the cluster user and a preset mapping table of the SPS resource activation time and the GDRX start time offset.
6. The system of claim 5, wherein the SPS resource activation time and GDRX start time offset mapping table is:
SPS resource activation time, unit subframe GDRX start time offset, unit subframe 0 0 1 0 5 5 6 5 10 10 11 10 15 15 16 15
。
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