CN113573388A - Star network sleep scheduling method and device, electronic equipment and storage medium - Google Patents

Star network sleep scheduling method and device, electronic equipment and storage medium Download PDF

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Publication number
CN113573388A
CN113573388A CN202010356006.8A CN202010356006A CN113573388A CN 113573388 A CN113573388 A CN 113573388A CN 202010356006 A CN202010356006 A CN 202010356006A CN 113573388 A CN113573388 A CN 113573388A
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sleep
terminal node
scheduling
terminal
condition
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CN113573388B (en
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任荣辉
邹宁
孔永峰
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Chenxin Technology Co ltd
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Chenxin Technology Co ltd
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    • 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
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/44—Star or tree networks
    • 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
    • H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H04W52/0235—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a power saving command
    • 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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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The embodiment of the disclosure discloses a method, a device, electronic equipment and a storage medium for scheduling sleep of a star network, wherein the star network comprises a central node and a plurality of terminal nodes, each terminal node independently wakes up at the tail of each multiframe, the method is executed by the central node, and the method comprises the following steps: determining whether at least one terminal node in a non-sleep state meets a sleep condition; generating a scheduling command according to whether the at least one terminal node meets a sleep condition; and scheduling the terminal nodes meeting the sleep condition to enter the sleep according to the scheduling command. According to the technical scheme of the embodiment of the disclosure, the terminal can be scheduled to enter the sleep state when no data is received and transmitted, the power consumption overhead of the terminal can be saved, and the standby time of the terminal can be prolonged.

Description

Star network sleep scheduling method and device, electronic equipment and storage medium
Technical Field
The embodiment of the disclosure relates to the technical field of computer networks, in particular to a method and a device for scheduling sleep in a star network, electronic equipment and a storage medium.
Background
The star wireless network is composed of two network devices: a central node and a terminal node. The central node is a hub of the whole star network, and each terminal node is connected to the central node through wireless and carries out information interaction with the central node. The terminal nodes can not directly exchange information and can only forward information through the central node, so that the function of mutual communication between the terminal nodes is achieved, and a schematic diagram of a star-shaped wireless network topology structure is shown in fig. 1.
Each end node device in a star wireless network is typically power consumption sensitive when powered by a battery, and therefore power saving design needs to be considered.
Disclosure of Invention
In view of this, the embodiments of the present disclosure provide a method, an apparatus, an electronic device, and a storage medium for scheduling sleep in a star network, so as to save power consumption overhead of a terminal.
Additional features and advantages of the disclosed embodiments will be set forth in the detailed description which follows, or in part will be obvious from the description, or may be learned by practice of the disclosed embodiments.
In a first aspect of the present disclosure, an embodiment of the present disclosure provides a method for scheduling sleep in a star network, where the star network includes a central node and a plurality of terminal nodes, each terminal node autonomously wakes up at the end of each multiframe, and the method is performed by the central node, and the method includes:
determining whether at least one terminal node in a non-sleep state meets a sleep condition;
generating a scheduling command according to whether the at least one terminal node meets a sleep condition;
and scheduling the terminal nodes meeting the sleep condition to enter the sleep according to the scheduling command.
In an embodiment, before determining whether at least one terminal node in the non-sleep state meets the sleep condition, the method further includes: and determining that no multicast data is to be transmitted.
In one embodiment, determining whether at least one terminal node in a non-sleep state meets a sleep condition comprises: and determining whether at least one terminal node in a non-sleep state meets the sleep condition or not according to the existence of downlink data to be received, the existence of uplink data to be uploaded and the existence of data packet transceiving within the latest preset time.
In an embodiment, determining whether at least one terminal node in a non-sleep state meets a sleep condition according to whether each terminal node has downlink data to be received, uplink data to be uploaded, and data packet transceiving within a latest predetermined time includes: for any terminal node in the non-sleep state: if the central node has the downlink data of the terminal node to be transmitted, determining that the terminal node does not conform to the sleep condition; if the terminal node does not report that no uplink data is to be transmitted, determining that the terminal node does not conform to a sleep condition; if the terminal node receives and transmits a TCP data packet or an ICMP data packet within the latest preset time, determining that the terminal node does not conform to the sleep condition; otherwise, determining that the terminal node meets the sleep condition.
In an embodiment, the generating the scheduling command according to whether the at least one terminal node meets the sleep condition includes: constructing a preset broadcast message containing BITMAP data, setting the value of the position corresponding to the access sequence number of the terminal node meeting the sleep condition in the BITMAP data as a first value, and setting the value of the position corresponding to the access sequence number of the terminal node not meeting the sleep condition in the BITMAP data as a second value.
In an embodiment, the scheduling the terminal node meeting the sleep condition to go to sleep according to the scheduling command includes: broadcasting the predetermined broadcast message; or if the next schedulable wireless subframe is a downlink broadcast subframe, carrying the predetermined broadcast message in the message to be broadcast of the downlink broadcast subframe for broadcasting.
In one embodiment, determining whether at least one terminal node in a non-sleep state meets a sleep condition comprises: and when the current time slot is the wireless frame 0 of the current multiframe, determining whether at least one terminal node in the non-sleep state meets the sleep condition.
In one embodiment, broadcasting the predetermined broadcast message includes: and broadcasting the preset broadcast message in a downlink radio subframe of a radio frame 0 of the current multiframe.
In an embodiment, the at least one terminal node in the non-sleep state includes a terminal node to be scheduled in a downlink currently accessed to the star network; generating a scheduling command according to whether the at least one terminal node meets a sleep condition comprises: before scheduling downlink subframes of each wireless subframe, if a target terminal node of each downlink subframe meets a sleep condition, carrying a preset control element in a downlink MAC PDU as a sleep command so that the target terminal node enters a sleep state after acquiring the control element.
In an embodiment, the at least one terminal node in the non-sleep state includes a terminal node to be scheduled in an uplink that has currently accessed to the star network; generating a scheduling command according to whether the at least one terminal node meets a sleep condition comprises: when the uplink sub-frame of each wireless sub-frame is scheduled, constructing DCIO for scrambling transmission, wherein the DCIO comprises a preset sleep indication field for indicating whether a source terminal node of the uplink sub-frame meets a sleep condition or not, so that the source terminal node determines whether to enter a sleep state or not according to the received sleep indication field in the DCIO.
In a second aspect of the present disclosure, an embodiment of the present disclosure further provides an apparatus for scheduling sleep in a star network, where the star network includes a central node and a plurality of terminal nodes, each terminal node autonomously wakes up at the end of each multiframe, and the apparatus is configured in the central node, and the apparatus includes:
a sleep scheduling judging unit for determining whether at least one terminal node in a non-sleep state meets a sleep condition;
a scheduling command generating unit, configured to generate a scheduling command according to whether the at least one terminal node meets a sleep condition;
and the sleep control unit is used for scheduling the terminal nodes meeting the sleep condition to enter the sleep according to the scheduling command.
In an embodiment, the scheduled sleep determining unit is further configured to determine that no multicast data is to be transmitted before determining whether at least one terminal node in the non-sleep state meets the sleep condition.
In an embodiment, the sleep scheduling determination unit is configured to: and determining whether at least one terminal node in a non-sleep state meets the sleep condition or not according to the existence of downlink data to be received, the existence of uplink data to be uploaded and the existence of data packet transceiving within the latest preset time.
In an embodiment, the sleep scheduling determination unit is configured to: for any terminal node in the non-sleep state: if the central node has the downlink data of the terminal node to be transmitted, determining that the terminal node does not conform to the sleep condition; if the terminal node does not report that no uplink data is to be transmitted, determining that the terminal node does not conform to a sleep condition; if the terminal node receives and transmits a TCP data packet or an ICMP data packet within the latest preset time, determining that the terminal node does not conform to the sleep condition; otherwise, determining that the terminal node meets the sleep condition.
In an embodiment, the scheduling command generating unit is configured to: constructing a preset broadcast message containing BITMAP data, setting the value of the position corresponding to the access sequence number of the terminal node meeting the sleep condition in the BITMAP data as a first value, and setting the value of the position corresponding to the access sequence number of the terminal node not meeting the sleep condition in the BITMAP data as a second value.
In one embodiment, the sleep control unit is configured to: broadcasting the predetermined broadcast message; or if the next schedulable wireless subframe is a downlink broadcast subframe, carrying the predetermined broadcast message in the message to be broadcast of the downlink broadcast subframe for broadcasting.
In an embodiment, the sleep scheduling determination unit is configured to: and when the current time slot is the wireless frame 0 of the current multiframe, determining whether at least one terminal node in the non-sleep state meets the sleep condition.
In an embodiment, the broadcasting the predetermined broadcast message by the sleep control unit includes: for broadcasting the predetermined broadcast message in a downlink radio subframe of radio frame 0 of the current multiframe.
In an embodiment, the at least one terminal node in the non-sleep state in the schedule sleep determination unit includes a downlink terminal node to be scheduled that has currently accessed to the star network; the scheduling command generating unit is used for: before scheduling downlink subframes of each wireless subframe, if a target terminal node of each downlink subframe meets a sleep condition, carrying a preset control element in a downlink MAC PDU as a sleep command so that the target terminal node enters a sleep state after acquiring the control element.
In an embodiment, the at least one terminal node in the non-sleep state in the schedule sleep determination unit includes a terminal node to be scheduled in an uplink state that has currently accessed to the star network; the scheduling command generating unit is used for: when the uplink sub-frame of each wireless sub-frame is scheduled, constructing DCIO for scrambling transmission, wherein the DCIO comprises a preset sleep indication field for indicating whether a source terminal node of the uplink sub-frame meets a sleep condition or not, so that the source terminal node determines whether to enter a sleep state or not according to the received sleep indication field in the DCIO.
In a third aspect of the disclosure, an electronic device is provided. The electronic device includes: a processor; and a memory for storing executable instructions that, when executed by the processor, cause the electronic device to perform the method of the first aspect.
In a fourth aspect of the disclosure, a computer-readable storage medium is provided, on which a computer program is stored, which computer program, when being executed by a processor, carries out the method in the first aspect.
The technical scheme provided by the embodiment of the disclosure has the beneficial technical effects that:
the method and the device for scheduling the terminal nodes in the non-sleep state have the advantages that whether at least one terminal node in the non-sleep state meets the sleep condition or not is determined through the central node of the star network, the scheduling command is generated, the terminal nodes meeting the sleep condition are scheduled to enter the sleep state according to the scheduling command, the terminal can be scheduled to enter the sleep state when no data are received and sent, power consumption overhead of the terminal can be saved, and the standby time of the terminal can be prolonged.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed to be used in the description of the embodiments of the present disclosure will be briefly described below, and it is obvious that the drawings in the following description are only a part of the embodiments of the present disclosure, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present disclosure and the drawings without creative efforts.
FIG. 1 is a schematic diagram of a star wireless network topology;
FIG. 2 is a schematic diagram of a frame structure;
fig. 3 is a flowchart illustrating a method for scheduling sleep in a star network according to an embodiment of the present disclosure;
fig. 4 is a schematic flowchart of multiple scheduling command modes of a method for scheduling sleep in a star network according to an embodiment of the present disclosure;
FIG. 5 is a schematic flow chart diagram illustrating a further exemplary method for scheduling sleep for a star network provided in accordance with an embodiment of the present disclosure;
FIG. 6 is a flowchart illustration of another example method of star network scheduled sleep provided in accordance with an embodiment of the present disclosure;
FIG. 7 is a flowchart illustration of another example method of star network scheduled sleep provided in accordance with an embodiment of the present disclosure;
fig. 8 is a schematic structural diagram of an apparatus for scheduling sleep in a star network according to an embodiment of the present disclosure;
FIG. 9 shows a schematic structural diagram of an electronic device suitable for use in implementing embodiments of the present disclosure.
Detailed Description
In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments, but not all embodiments, of the embodiments of the present disclosure. All other embodiments, which can be obtained by a person skilled in the art without making creative efforts based on the embodiments of the present disclosure, belong to the protection scope of the embodiments of the present disclosure.
It should be noted that the terms "system" and "network" are often used interchangeably in the embodiments of the present disclosure. Reference to "and/or" in embodiments of the present disclosure is meant to include any and all combinations of one or more of the associated listed items. The terms "first", "second", and the like in the description and claims of the present disclosure and in the drawings are used for distinguishing between different objects and not for limiting a particular order.
It should also be noted that, in the embodiments of the present disclosure, each of the following embodiments may be executed alone, or may be executed in combination with each other, and the embodiments of the present disclosure are not limited specifically.
The names of messages or information exchanged between devices in the embodiments of the present disclosure are for illustrative purposes only, and are not intended to limit the scope of the messages or information.
The technical solutions of the embodiments of the present disclosure are further described by the following detailed description in conjunction with the accompanying drawings.
Fig. 3 shows a flowchart of a method for scheduling sleep in a star network according to an embodiment of the present disclosure, where this embodiment is applicable to a case where a central node in a star wireless network schedules a terminal node to enter a sleep state, and the method may be executed by an apparatus for scheduling sleep in a star network, as shown in fig. 1, the method for scheduling sleep in a star network according to this embodiment includes:
in step S310, it is determined whether at least one terminal node in the non-sleep state meets a sleep condition.
And the at least one terminal node in the non-sleep state is a terminal node in the non-sleep state within a preset range in the terminal nodes accessed into the star network. It should be noted that, when determining whether each terminal node meets the sleep condition, sometimes it is not necessary to traverse all the terminal nodes in each non-sleep state, sometimes all the terminal nodes in the non-sleep state within a predetermined range among the terminal nodes accessed to the star network, sometimes the terminal nodes to be scheduled in the uplink, sometimes the terminal nodes to be scheduled in the downlink, and the specific range thereof needs to be determined according to the specific sleep scheduling method adopted.
For example, the central node determines whether multicast data is to be transmitted, and if no multicast data is to be transmitted, other determination may be further performed. For example, whether at least one terminal node in the non-sleep state meets the sleep condition may be determined according to whether each terminal node has downlink data to be received, uplink data to be uploaded, and whether data packets are received or not within a latest predetermined time (for example, 5 milliseconds). Specifically, any terminal node in the non-sleep state may be determined as follows: if the central node has the downlink data of the terminal node to be transmitted, determining that the terminal node does not conform to the sleep condition; if the terminal node does not report that no uplink data is to be transmitted, determining that the terminal node does not conform to a sleep condition; if the terminal node receives and transmits a TCP data packet or an ICMP data packet within the latest preset time, determining that the terminal node does not conform to the sleep condition; otherwise, determining that the terminal node meets the sleep condition.
In step S320, a scheduling command is generated according to whether the at least one terminal node meets the sleep condition.
Various methods can be adopted for generating the scheduling command, fig. 4 is a flow chart illustrating various scheduling command modes of a method for scheduling sleep in a star network according to an embodiment of the present disclosure, and exemplarily provides three methods, including:
in step S411, it is determined whether the next scheduled wireless subframe type is a subframe type corresponding to a predetermined method, so as to determine whether a sleep condition can be scheduled. For example, if the method one is scheduled to be adopted, sleep can be scheduled when the next scheduled radio subframe type is a broadcast system message subframe, if the method two is scheduled to be adopted, sleep can be scheduled when the next scheduled radio subframe type is an uplink subframe, and if the method three is scheduled to be adopted, sleep can be scheduled when the next scheduled radio subframe type is a downlink subframe.
The first method is that a special broadcast system message is used as a scheduling command, the content is Bitmap, each accessed terminal node is mapped to the Bitmap according to an access serial number distributed when random access is successful, 1 is set to indicate that the terminal node is scheduled to sleep, 0 is set to indicate that the terminal node is not scheduled to sleep, and the terminal node can be broadcast as an independent broadcast system message or is incidentally carried behind other broadcast messages and is broadcast and sent on a downlink wireless subframe of a wireless frame 0. For example, the following steps may be employed: in step S411, the next scheduled radio subframe type is determined to be a broadcast system message subframe. In step S412, all the accessed terminal nodes are traversed, and the sleep condition is checked. In step S413, a special broadcast system message is constructed, and a sleep enable bitmap is set and transmitted.
For example, when the central node sends a broadcast system message in the first downlink wireless subframe of the wireless frame 0, all accessed terminal nodes are checked first, if 3 terminal nodes 1,3,5 meet the sleep condition respectively, the Bitmap corresponding to the special broadcast system message is set to 1 and then broadcast, then the terminal nodes 1,3,5 are not scheduled in the current multiframe, and the terminal nodes 1,3,5 enter the sleep after receiving the broadcast system message until the tail of the current multiframe is awakened autonomously.
And the second method adopts MAC Control Elements of a downlink DRX Command type as a scheduling Command, has the same format as the definition of an LTE 36.321 protocol specification, and can be scheduled and sent after scrambling by using an RNTI (radio network temporary identifier) of a corresponding terminal node when scheduling the downlink subframe of each wireless frame. For example, the following steps may be employed: in step S421, the next scheduled radio subframe type is determined to be an uplink subframe. In step S422, the uplink to-be-scheduled access terminal node is traversed, and a sleep condition is checked. In step S423, DCI0 is structured, and if sleep is allowed, a sleep flag is set and transmitted.
And thirdly, using the uplink DCI format0 as a scheduling command, wherein the format is the same as the LTE 36.212 protocol specification definition, multiplexing ul index therein, setting the ul index to be 3, indicating that the corresponding terminal node is scheduled to sleep, and scheduling and sending the uplink DCI format after scrambling by using the RNTI of the corresponding terminal node when scheduling the uplink subframe of each wireless frame. For example, the following steps may be employed: in step S431, the next scheduled radio subframe type is determined to be a downlink subframe. In step S432, the downlink to-be-scheduled access terminal node is traversed, and a sleep condition is checked. In step S433, a downlink packet is constructed, and if the sleep is allowed, the packet is sent with the ORX CMD.
The above-described methods for generating the scheduling command may be used independently or in combination.
In step S330, the terminal nodes meeting the sleep condition are scheduled to go to sleep according to the scheduling command.
The central node immediately adopts a corresponding scheduling command to schedule the corresponding terminal node to sleep according to the type of the next schedulable wireless subframe, and then the central node does not schedule the terminal node within the current multiframe and the terminal node automatically wakes up at the tail of the multiframe.
In this embodiment, a central node of a star network determines whether at least one terminal node in a non-sleep state meets a sleep condition, generates a scheduling command, schedules the terminal node meeting the sleep condition to go to sleep according to the scheduling command, and can schedule the terminal to go to the sleep state when no data is received or transmitted, thereby saving power consumption overhead of the terminal and prolonging standby time of the terminal.
Fig. 5 is a flowchart illustrating another method for scheduling sleep in a star network according to an embodiment of the present disclosure, where the present embodiment is based on the foregoing embodiments and is optimized. As shown in fig. 5, the method for scheduling sleep in a star network according to this embodiment includes:
in step S510, when the current timeslot is the radio frame 0 of the current multiframe, it is determined whether all the terminal nodes in the non-sleep state meet the sleep condition.
The judgment opportunity of the sleep scheduling may include various situations, for example, the scheduling width judgment may be performed at the beginning of each multiframe (for example, the 0 th frame of each multiframe, see the frame structure diagram shown in fig. 2), and this method can control the terminal nodes that do not need data interaction in the current multiframe to be in the sleep state as early as possible, and can save the power consumption of these terminal nodes to the maximum extent. Of course, the scheduling judgment can be performed before the broadcast system message subframe, and the scheduling command can be carried in the broadcast message of the subframe when the message of the subframe is broadcast, so as to reduce the number of occupied subframes and avoid occupying extra subframe time slots.
In step S520, a predetermined broadcast message including BITMAP data is constructed, a value of a position corresponding to the access sequence number of the terminal node that meets the sleep condition is set as a first value in the BITMAP data, and a value of a position corresponding to the access sequence number of the terminal node that does not meet the sleep condition is set as a second value in the BITMAP data.
In step S530, broadcasting the predetermined broadcast message; or if the next schedulable wireless subframe is a downlink broadcast subframe, carrying the predetermined broadcast message in the message to be broadcast of the downlink broadcast subframe for broadcasting. For example, the predetermined broadcast message is broadcast in a downlink radio subframe of radio frame 0 of the current multiframe.
Based on the previous embodiment, the present embodiment discloses a method for performing sleep scheduling on the 0 th frame of each multiframe, which can help a terminal node meeting a sleep condition to sleep as early as possible, so as to prolong the standby time of the terminal.
Fig. 6 is a flowchart illustrating a further method for scheduling sleep in a star network according to an embodiment of the present disclosure, where the embodiment is based on the embodiment corresponding to fig. 3 and is optimized. As shown in fig. 6, the method for scheduling sleep in a star network according to this embodiment includes:
in step S610, when the current time slot is a downlink subframe, it is determined whether a terminal node to be scheduled in a downlink state, which is currently accessed to the star network in a non-sleep state, meets a sleep condition.
In step S620, before scheduling the downlink subframe of each radio subframe, if the target terminal node of the downlink subframe meets the sleep condition, the downlink MAC PDU carries a predetermined control element as a sleep command.
For example, a MAC Control Element (Control Element) of a DRX Command type described in a protocol specification similar to 36.321 is carried in a downlink MAC PDU as a sleep Command, and if the target terminal node receives the downlink MAC PDU from the central node, the target terminal node enters a sleep state if the target terminal node receives the sleep Command carrying the Control Element.
In step S630, the downlink MAC PDU is transmitted.
On the basis of the embodiment corresponding to fig. 3, the present embodiment discloses that, for a terminal node in a non-sleep state that is currently accessed to a downlink to be scheduled in the star network when the current time slot is a downlink subframe, a scheduling command is carried in the downlink message for the terminal node meeting a sleep condition, and the scheduling command is issued, so that the standby time of the terminal can be prolonged without additionally increasing the number of messages received by the terminal node.
Fig. 7 is a flowchart illustrating a method for scheduling sleep in a star network according to an embodiment of the present disclosure, where the embodiment is based on the embodiment corresponding to fig. 3 and is optimized. As shown in fig. 7, the method for scheduling sleep in a star network according to this embodiment includes:
in step S710, when the current timeslot is an uplink subframe, it is determined whether an uplink to-be-scheduled terminal node currently accessed to the star network in a non-sleep state meets a sleep condition.
In step S720, when scheduling an uplink subframe of each wireless subframe, a DCIO is constructed for scrambling transmission, where the DCIO includes a predetermined sleep indication field for indicating whether a source terminal node of the uplink subframe meets a sleep condition, so that the source terminal node determines whether to enter a sleep state according to the received sleep indication field in the DCIO.
In step S730, the scrambled DCIO is transmitted.
In this embodiment, on the basis of the embodiment corresponding to fig. 3, a method for sending the scrambled DCIO to perform sleep scheduling control on a terminal node meeting a sleep condition in a terminal node currently accessed to an uplink to be scheduled in the star network in a non-sleep state when a current time slot is an uplink subframe is disclosed, so that the standby time of the terminal can be prolonged.
As an implementation of the methods shown in the above figures, the present application provides an embodiment of a star network sleep scheduling apparatus, and fig. 8 shows a schematic structural diagram of the star network sleep scheduling apparatus provided in this embodiment, where the star network includes a central node and a plurality of terminal nodes, each terminal node autonomously wakes up at the tail of each multiframe, and the apparatus is configured in the central node, and this embodiment of the apparatus corresponds to the method embodiments shown in fig. 1 to 7, and as shown in fig. 8, the star network sleep scheduling apparatus described in this embodiment includes a sleep scheduling determination unit 810, a scheduling command generation unit 820, and a sleep control unit 830.
The scheduled sleep determination unit 810 is configured to determine whether at least one terminal node in a non-sleep state meets a sleep condition.
The scheduling command generating unit 820 is configured to generate a scheduling command according to whether the at least one terminal node meets a sleep condition.
The sleep control unit 830 is configured to schedule the terminal nodes meeting the sleep condition to go to sleep according to the scheduling command.
In an embodiment, the scheduled sleep determining unit 810 is configured to determine that no multicast data is to be transmitted before determining whether at least one terminal node in the non-sleep state meets the sleep condition.
In an embodiment, the sleep scheduling determination unit 810 is configured to determine whether at least one terminal node in a non-sleep state meets a sleep condition according to whether each terminal node has downlink data to be received, uplink data to be uploaded, and whether there is data packet transceiving within a latest predetermined time.
In an embodiment, the scheduled sleep determination unit 810 is configured to perform the following operations for any terminal node in the non-sleep state:
if the central node has the downlink data of the terminal node to be transmitted, determining that the terminal node does not conform to the sleep condition;
if the terminal node does not report that no uplink data is to be transmitted, determining that the terminal node does not conform to a sleep condition;
if the terminal node receives and transmits a TCP data packet or an ICMP data packet within the latest preset time, determining that the terminal node does not conform to the sleep condition;
otherwise, determining that the terminal node meets the sleep condition.
In an embodiment, the scheduling command generating unit 820 is configured to construct a predetermined broadcast message including BITMAP data, where a value of a position corresponding to an access sequence number of a terminal node meeting a sleep condition is set as a first value in the BITMAP data, and a value of a position corresponding to an access sequence number of a terminal node not meeting the sleep condition is set as a second value in the BITMAP data.
Further, the sleep control unit 830 is configured to broadcast the predetermined broadcast message; or if the next schedulable wireless subframe is a downlink broadcast subframe, carrying the predetermined broadcast message in the message to be broadcast of the downlink broadcast subframe for broadcasting.
Further, the scheduled sleep determination unit 810 is configured to determine whether at least one terminal node in a non-sleep state meets a sleep condition when the current time slot is the radio frame 0 of the current multiframe.
Further, the sleep control unit 830 is configured to broadcast the predetermined broadcast message in a downlink radio subframe of radio frame 0 of a current multiframe.
In an embodiment, the at least one terminal node in the non-sleep state in the schedule sleep determination unit includes a downlink terminal node to be scheduled that has currently accessed to the star network; the scheduling command generating unit is used for: before scheduling downlink subframes of each wireless subframe, if a target terminal node of each downlink subframe meets a sleep condition, carrying a preset control element in a downlink MAC PDU as a sleep command so that the target terminal node enters a sleep state after acquiring the control element. For example, a MAC Control Element (Control Element) of a DRX Command type described in a protocol specification similar to 36.321 is carried in a downlink MAC PDU as a sleep Command, and if the target terminal node receives the downlink MAC PDU from the central node, the target terminal node enters a sleep state if the target terminal node receives the sleep Command carrying the Control Element.
In an embodiment, the at least one terminal node in the non-sleep state in the schedule sleep determination unit 810 includes an uplink terminal node to be scheduled, which has currently accessed to the star network; the scheduling command generating unit 820 is configured to construct DCIO for scrambling transmission when scheduling an uplink subframe of each radio subframe, where the DCIO includes a predetermined sleep indication field for indicating whether a source terminal node of the uplink subframe meets a sleep condition, so that the source terminal node determines whether to enter a sleep state according to the received sleep indication field in the DCIO.
The star network sleep scheduling device provided by the embodiment can execute the method for star network sleep scheduling provided by the embodiment of the method disclosed by the invention, and has corresponding functional modules and beneficial effects of the execution method.
Referring now to FIG. 9, shown is a schematic diagram of an electronic device 900 suitable for use in implementing embodiments of the present disclosure. The terminal device in the embodiments of the present disclosure may include, but is not limited to, a mobile terminal such as a mobile phone, a notebook computer, a digital broadcast receiver, a PDA (personal digital assistant), a PAD (tablet computer), a PMP (portable multimedia player), a vehicle terminal (e.g., a car navigation terminal), and the like, and a stationary terminal such as a digital TV, a desktop computer, and the like. The electronic device shown in fig. 9 is only an example, and should not bring any limitation to the functions and the scope of use of the embodiments of the present disclosure.
As shown in fig. 9, the electronic device 900 may include a processing means (e.g., a central processing unit, a graphics processor, etc.) 901 that may perform various appropriate actions and processes in accordance with a program stored in a Read Only Memory (ROM)902 or a program loaded from a storage means 908 into a Random Access Memory (RAM) 903. In the RAM 903, various programs and data necessary for the operation of the electronic apparatus 900 are also stored. The processing apparatus 901, the ROM 902, and the RAM 903 are connected to each other through a bus 904. An input/output (I/O) interface 905 is also connected to bus 904.
Generally, the following devices may be connected to the I/O interface 905: input devices 906 including, for example, a touch screen, touch pad, keyboard, mouse, camera, microphone, accelerometer, gyroscope, etc.; an output device 907 including, for example, a Liquid Crystal Display (LCD), a speaker, a vibrator, and the like; storage 908 including, for example, magnetic tape, hard disk, etc.; and a communication device 909. The communication device 909 may allow the electronic apparatus 900 to perform wireless or wired communication with other apparatuses to exchange data. While fig. 9 illustrates an electronic device 900 having various means, it is to be understood that not all illustrated means are required to be implemented or provided. More or fewer devices may alternatively be implemented or provided.
In particular, according to an embodiment of the present disclosure, the processes described above with reference to the flowcharts may be implemented as computer software programs. For example, embodiments of the present disclosure include a computer program product comprising a computer program embodied on a computer readable medium, the computer program comprising program code for performing the method illustrated by the flow chart. In such an embodiment, the computer program may be downloaded and installed from a network through the communication device 909, or installed from the storage device 908, or installed from the ROM 902. The computer program performs the above-described functions defined in the methods of the embodiments of the present disclosure when executed by the processing apparatus 901.
It should be noted that the computer readable medium described above in the embodiments of the present disclosure may be a computer readable signal medium or a computer readable storage medium or any combination of the two. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples of the computer readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the disclosed embodiments, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. In contrast, in the disclosed embodiments, a computer readable signal medium may comprise a propagated data signal with computer readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to: electrical wires, optical cables, RF (radio frequency), etc., or any suitable combination of the foregoing.
The computer readable medium may be embodied in the electronic device; or may exist separately without being assembled into the electronic device.
The computer readable medium carries one or more programs which, when executed by the electronic device, cause the electronic device to: determining whether at least one terminal node in a non-sleep state meets a sleep condition; generating a scheduling command according to whether the at least one terminal node meets a sleep condition; and scheduling the terminal nodes meeting the sleep condition to enter the sleep according to the scheduling command.
Computer program code for carrying out operations for embodiments of the present disclosure may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, Smalltalk, C + +, and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider).
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
The units described in the embodiments of the present disclosure may be implemented by software or hardware. Where the name of a unit does not in some cases constitute a limitation of the unit itself, for example, the first retrieving unit may also be described as a "unit for retrieving at least two internet protocol addresses".
The foregoing description is only a preferred embodiment of the disclosed embodiments and is illustrative of the principles of the technology employed. It will be appreciated by those skilled in the art that the scope of the disclosure in the embodiments of the present disclosure is not limited to the particular combination of the above-described features, but also encompasses other embodiments in which any combination of the above-described features or their equivalents is possible without departing from the scope of the present disclosure. For example, the above features and (but not limited to) the features with similar functions disclosed in the embodiments of the present disclosure are mutually replaced to form the technical solution.

Claims (13)

1. A method of scheduling sleep in a star network, the star network comprising a central node and a plurality of terminal nodes, each terminal node waking autonomously at the end of each multiframe, the method being performed by the central node, the method comprising:
determining whether at least one terminal node in a non-sleep state meets a sleep condition;
generating a scheduling command according to whether the at least one terminal node meets a sleep condition;
and scheduling the terminal nodes meeting the sleep condition to enter the sleep according to the scheduling command.
2. The method of claim 1, further comprising, prior to determining whether the at least one terminal node in the non-sleep state is eligible for sleep:
and determining that no multicast data is to be transmitted.
3. The method of claim 1, wherein determining whether at least one terminal node in a non-sleep state is eligible for sleep comprises:
and determining whether at least one terminal node in a non-sleep state meets the sleep condition or not according to the existence of downlink data to be received, the existence of uplink data to be uploaded and the existence of data packet transceiving within the latest preset time length of each terminal node.
4. The method of claim 3, wherein determining whether at least one terminal node in a non-sleep state meets the sleep condition according to whether each terminal node has downlink data to be received, uplink data to be uploaded, and data packet transceiving within a latest predetermined time period comprises:
for any terminal node in the non-sleep state:
if the central node has the downlink data of the terminal node to be transmitted, determining that the terminal node does not conform to the sleep condition;
if the terminal node does not report that no uplink data is to be transmitted, determining that the terminal node does not conform to a sleep condition;
if the terminal node receives and transmits a TCP data packet or an ICMP data packet within the latest preset time, determining that the terminal node does not conform to the sleep condition;
otherwise, determining that the terminal node meets the sleep condition.
5. The method of claim 1, wherein generating a scheduling command based on whether the at least one terminal node meets a sleep condition comprises:
constructing a preset broadcast message containing BITMAP data, setting the value of the position corresponding to the access sequence number of the terminal node meeting the sleep condition in the BITMAP data as a first value, and setting the value of the position corresponding to the access sequence number of the terminal node not meeting the sleep condition in the BITMAP data as a second value.
6. The method of claim 5, wherein scheduling the terminal nodes meeting the sleep condition to go to sleep according to the scheduling command comprises:
broadcasting the predetermined broadcast message; or
And if the next schedulable wireless subframe is a downlink broadcast subframe, carrying the preset broadcast message in a message to be broadcast of the downlink broadcast subframe for broadcasting.
7. The method of claim 6, wherein determining whether at least one terminal node in a non-sleep state is eligible for sleep comprises:
and when the current time slot is the wireless frame 0 of the current multiframe, determining whether at least one terminal node in the non-sleep state meets the sleep condition.
8. The method of claim 7, wherein broadcasting the predetermined broadcast message comprises: and broadcasting the preset broadcast message in a downlink radio subframe of a radio frame 0 of the current multiframe.
9. The method according to claim 1, wherein the at least one terminal node in the non-sleep state comprises a terminal node to be scheduled downstream which has currently accessed into the star network;
generating a scheduling command according to whether the at least one terminal node meets a sleep condition comprises:
before scheduling downlink subframes of each wireless subframe, if a target terminal node of each downlink subframe meets a sleep condition, carrying a preset control element in a downlink MAC PDU as a sleep command so that the target terminal node enters a sleep state after acquiring the control element.
10. The method according to claim 1, wherein the at least one terminal node in the non-sleep state comprises a terminal node to be scheduled in an uplink state that has currently accessed the star network;
generating a scheduling command according to whether the at least one terminal node meets a sleep condition comprises:
when the uplink sub-frame of each wireless sub-frame is scheduled, constructing DCIO for scrambling transmission, wherein the DCIO comprises a preset sleep indication field for indicating whether a source terminal node of the uplink sub-frame meets a sleep condition or not, so that the source terminal node determines whether to enter a sleep state or not according to the received sleep indication field in the DCIO.
11. An apparatus for scheduling sleep in a star network, the star network comprising a central node and a plurality of terminal nodes, each terminal node waking autonomously at the end of each multiframe, the apparatus being configured in the central node, the apparatus comprising:
a sleep scheduling judging unit for determining whether at least one terminal node in a non-sleep state meets a sleep condition;
a scheduling command generating unit, configured to generate a scheduling command according to whether the at least one terminal node meets a sleep condition;
and the sleep control unit is used for scheduling the terminal nodes meeting the sleep condition to enter the sleep according to the scheduling command.
12. An electronic device, comprising:
a processor; and
a memory to store executable instructions that, when executed by the one or more processors, cause the electronic device to perform the method of any of claims 1-10.
13. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the method according to any one of claims 1-10.
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