WO2017015948A1 - Procédé et appareil pour ajuster la perte d'énergie d'un système de réseau sans fil - Google Patents

Procédé et appareil pour ajuster la perte d'énergie d'un système de réseau sans fil Download PDF

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Publication number
WO2017015948A1
WO2017015948A1 PCT/CN2015/085532 CN2015085532W WO2017015948A1 WO 2017015948 A1 WO2017015948 A1 WO 2017015948A1 CN 2015085532 W CN2015085532 W CN 2015085532W WO 2017015948 A1 WO2017015948 A1 WO 2017015948A1
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Prior art keywords
information
backhaul
base station
working state
access
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PCT/CN2015/085532
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English (en)
Chinese (zh)
Inventor
杨科文
张洁涛
庄宏成
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华为技术有限公司
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Priority to PCT/CN2015/085532 priority Critical patent/WO2017015948A1/fr
Priority to CN201580081123.5A priority patent/CN107852619B/zh
Publication of WO2017015948A1 publication Critical patent/WO2017015948A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • 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

Definitions

  • Embodiments of the present invention relate to the field of wireless network communications and, more particularly, to methods and apparatus for adjusting energy loss of a wireless network system.
  • the dense deployment of the wireless access point may result in a large loss of system energy in the case of low network use efficiency.
  • the user equipment served by the wireless access point with less load is switched to other wireless access points by dynamically shutting down the access side of some wireless access points to achieve energy saving.
  • the wireless access point needs to access the core network through the backhaul, and the backhaul energy consumption of the dense network cannot be ignored. How to effectively adjust the energy loss of the system and realize energy conservation while fully utilizing the efficiency of network use is an urgent problem to be solved.
  • Embodiments of the present invention provide a method and apparatus for adjusting energy loss of a wireless network system, which can adjust the energy loss of the system while fully utilizing the network use efficiency.
  • the first aspect provides a method for adjusting energy loss of a wireless network system, including acquiring first access information, first backhaul information, and first working state information of the first base station, and acquiring a second connection of the second base station.
  • the first backhaul information is the information of the backhaul link of the first base station, and the first working state information is used to indicate the current status of the first base station.
  • An access working state and a backhaul working state where the second backhaul information is information of a backhaul link of the second base station, and the second working state information is used to indicate a current access working state of the second base station
  • the backhaul working state the first access information includes at least one of channel state information, traffic volume, and quality of service QoS corresponding to the user equipment accessing the first base station
  • the second access information includes at least one of channel state information, traffic volume, and QoS corresponding to the user equipment that accesses the second base station; according to the first access information, the first backhaul Information, the first working state information, the second access information, the second backhaul information, and the second working state information, determining an access working state and a back working state to be entered by the first base station .
  • the first backhaul information includes at least one of a backhaul cache capacity, a backhaul link capacity, and service requirement information of the first base station
  • the second backhaul information includes at least one of a backhaul cache capacity, a backhaul link capacity, and a service requirement of the second base station, where the service requirement information includes at least one of backhaul traffic, backhaul traffic QoS, and backhaul routing information.
  • the access working state is a normal access mode, a discontinuous transmission DTX access mode, or an OFF access mode
  • the return working state is normal backhaul mode, DTX backhaul mode or OFF backhaul mode.
  • the method is performed by the first base station, where the acquiring second access information and second backhaul information of the second base station And the second working state information includes: receiving the second access information, the second backhaul information, and the second working state information that are sent by the second base station.
  • the method further includes: sending, to the second base station, third working state information, where the third working state information is used Indicates an access working state and/or a backhaul working state to be entered by the first base station.
  • the method further includes: accessing the access according to an access working state and a backhaul working state that the first base station is to enter The user equipment of the first base station performs configuration and updates the route that performs backhaul through the first base station.
  • the accessing the first base station according to the access working state and the backhaul working state that the first base station is to enter The user equipment is configured to update the route that is backhauled by the first base station, and includes: when the access working state to be entered by the first base station is the DTX access mode, access is performed through air interface signaling.
  • the user equipment of the first base station is configured to discontinue receiving the DRX mode or update the configuration parameter of the DRX mode of the user equipment accessing the first base station;
  • the access working state to be entered by the first base station is the OFF access mode
  • the user equipment accessing the first base station is switched to access other base stations by air interface signaling;
  • the backhaul operation state is the OFF backhaul mode
  • the service that implements the backhaul through the first base station is switched to implement the backhaul through other base stations.
  • the performing, according to the first access information, the first backhaul information, the first working state information, Determining, by the second access information, the second backhaul information, and the second working state information, that the access working state and the backhaul working state of the first base station to enter include: according to the first access information, The first backhaul information, the first working state information, the second access information, the second backhaul information, and the second working state information calculate a transmission required by the first base station to transmit a service The time interval TTI number is compared, and the TTI number is compared with a preset sleep time threshold value, and the access working state and the backhaul working state to be entered by the first base station are determined.
  • the method is performed by a controller, where the method further includes: according to the first access information, the first backhaul Information, the first working state information, the second access information, the second backhaul information, and the second working state information, determining an access working state and a back working state to be entered by the second base station .
  • the acquiring, by the first base station, the first access information, the first backhaul information, the first working state information, and acquiring the second The second access information, the second backhaul information, and the second working state information of the base station include: receiving the first access information, the first backhaul information, and the first working state information that are sent by the first base station Receiving, by the second base station, the second access information, the second backhaul information, and the second working state information.
  • the controller is located in a serving gateway SGW, a mobility management entity MME, a software defined network SDN controller, or a base station.
  • the second aspect provides an apparatus for adjusting an energy loss of a wireless network system, including: an acquiring unit, configured to acquire first access information, first backhaul information, and first working state information of the first base station, and acquire the first The second access information, the second backhaul information, and the second working state information of the second base station, where the first backhaul information is information of a backhaul link of the first base station, and the first working state information is used to indicate Describe the current access working state and the backhaul working state of the first base station, where the The second backhaul information is the information of the backhaul link of the second base station, and the second working state information is used to indicate the current access working state and the backhaul working state of the second base station, where the first access information includes Accessing at least one of channel state information, traffic volume, and quality of service QoS corresponding to the user equipment of the first base station, where the second access information includes a channel state corresponding to the user equipment accessing the second base station At least one of the information, the traffic, and the Q
  • the first backhaul information includes at least one of a backhaul cache capacity, a backhaul link capacity, and service requirement information of the first base station, where
  • the second backhaul information includes at least one of a backhaul cache capacity, a backhaul link capacity, and a service requirement of the second base station, where the service requirement information includes at least one of backhaul traffic, backhaul traffic QoS, and backhaul routing information.
  • the access working state is a normal access mode, a discontinuous transmission DTX access mode, or an OFF access mode
  • the return working state is normal backhaul mode, DTX backhaul mode or OFF backhaul mode.
  • the device is the first base station, and the acquiring unit is specifically configured to receive the Two access information, the second backhaul information, and the second working state information.
  • the apparatus further includes: a sending unit, configured to send, to the second base station, third working state information, where the third The working state information is used to indicate an access working state and/or a backhaul working state to be entered by the first base station.
  • the apparatus further includes: a configuration unit, configured to perform an access working state and a backhaul working state according to the first base station to enter Configuring a user equipment that accesses the first base station, and updating a route that performs backhaul through the first base station.
  • a configuration unit configured to perform an access working state and a backhaul working state according to the first base station to enter Configuring a user equipment that accesses the first base station, and updating a route that performs backhaul through the first base station.
  • the configuration unit is specifically configured to: when an access working state to be entered by the first base station is the DTX access mode Configuring the user equipment accessing the first base station to be discontinuously connected through air interface signaling Receiving the DRX mode or updating the configuration parameter of the DRX mode of the user equipment accessing the first base station; when the access working state to be entered by the first base station is the OFF access mode, passing the air interface signaling Switching the user equipment accessing the first base station to accessing other base stations; when the backhaul working state to be entered by the first base station is the OFF backhaul mode, the backhaul service switching is implemented by the first base station. To achieve backhaul through other base stations.
  • the first determining unit is specifically configured to use, according to the first access information, the first backhaul information, the first The working state information, the second access information, the second backhaul information, and the second working state information calculate a number of transmission time intervals TTI required for the first base station to transmit a service, and the number of the TTIs is The preset sleep duration thresholds are compared to determine an access working state and a backhaul working state to be entered by the first base station.
  • the device is a controller, the device further includes: a second determining unit, configured to use, according to the first access information Determining, by the first backhaul information, the first working state information, the second access information, the second backhaul information, and the second working state information, an access to be accessed by the second base station Working status and return working status.
  • the acquiring unit is specifically configured to receive, by the first base station, the first access information, the first backhaul Information and the first working state information, and receiving the second access information, the second backhaul information, and the second working state information sent by the second base station.
  • the controller is located in a serving gateway SGW, a mobility management entity MME, a software defined network SDN controller, or a base station.
  • the access working state and the backhaul that the base station is about to enter are determined according to the access information of the user accessing each base station in at least two base stations, the backhaul information of each base station, and the current working state of each base station.
  • Working state this can adjust the energy loss of the system while making full use of the network use efficiency.
  • FIG. 1 is a schematic diagram of a scenario of a communication system to which an embodiment of the present invention is applicable.
  • FIG. 2 is a schematic flow chart of a method for adjusting energy loss of a wireless network system according to an embodiment of the present invention.
  • FIG. 3 is a schematic interaction diagram of a centralized implementation of a method of adjusting energy loss of a wireless network system in accordance with an embodiment of the present invention.
  • FIG. 4 is a schematic interaction diagram of a distributed implementation of a method for adjusting energy loss of a wireless network system in accordance with an embodiment of the present invention.
  • FIG. 5 is a schematic flow chart of a base station at each TTI in a wireless network system according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of an operation procedure of a base station determining that a current TTI of a corresponding module is in a normal mode in a wireless network system according to an embodiment of the present invention.
  • FIG. 7 is a schematic diagram of an operation procedure of a base station determining that a current TTI of a corresponding module is in a DTX mode in a wireless network system according to an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of an operation flow when a base station determines that a current TTI is in an OFF mode in a wireless network system according to an embodiment of the present invention.
  • FIG. 9 is a block diagram of an apparatus for adjusting energy loss of a wireless network system in accordance with an embodiment of the present invention.
  • FIG. 10 is a block diagram of an apparatus for adjusting energy loss of a wireless network system in accordance with another embodiment of the present invention.
  • the description of the wireless access point is only described by taking a base station (BS) as an example, but the present invention is not limited thereto.
  • the base station may be a Global System of Mobile communication (GSM) system or a base station in a Code Division Multiple Access (CDMA) system (Base Transceiver Station, Abbreviated as "BTS”), it can also be a base station (NodeB, NB) in a Wideband Code Division Multiple Access (WCDMA) system, or it can be an evolution in a Long Term Evolution (LTE) system.
  • GSM Global System of Mobile communication
  • CDMA Code Division Multiple Access
  • BTS Base Transceiver Station
  • NodeB NodeB
  • WCDMA Wideband Code Division Multiple Access
  • LTE Long Term Evolution
  • a type of base station (Evolved Node B, ENB or e-NodeB) is not limited in the present invention.
  • a user equipment may be referred to as a terminal (Mobile), a mobile station ("MS” for short), or a mobile terminal (Mobile Terminal).
  • the user equipment may be wirelessly accessed.
  • a Radio Access Network (“RAN”) communicates with one or more core networks.
  • the user device can be a mobile phone (or “cellular” phone) or a computer with a mobile terminal or the like.
  • the user equipment can also be a portable, pocket, handheld, computer built-in or in-vehicle mobile device that exchanges voice and/or data with the wireless access network.
  • FIG. 1 is a schematic diagram of a scenario of a communication system to which an embodiment of the present invention is applicable.
  • the communication system of FIG. 1 includes a first macro base station 101, a second macro base station 102, a core network 103, a first micro base station 104, a second micro base station 105, a third micro base station 106, a fourth micro base station 107, and a first user equipment. 108.
  • the solid line indicates the wired backhaul and the dotted line indicates the wireless backhaul.
  • the first user equipment 108 and the second user equipment 109 access the network through the first macro base station 101, and the first macro base station 101 implements a backhaul by directly connecting with the core network 103.
  • the third user equipment 110 accesses the network through the third micro base station 106, and the third micro base station 106 implements a backhaul to the core network through the second micro base station 105 and the first macro base station 101.
  • the fourth user equipment 111 accesses the network through the fourth micro base station 107, and the fourth micro base station 107 can implement the backhaul to the core network through the second macro base station 102.
  • the fourth micro base station 107 can also implement a backhaul to the core network through the second micro base station 105 and the first macro base station 101.
  • the first micro base station 104 is not connected to the user equipment, nor is it on the backhaul route.
  • the second micro base station 105 is not connected to the user equipment.
  • the second macro base station 102 can implement the backhaul for the fourth micro base station 107, it is not essential.
  • the wireless access point needs to access the core network through the backhaul.
  • backhaul is based on cable, but in future dense networks, not all access points can be equipped with wired backhaul due to factors such as cost and deployment constraints.
  • Access points that do not have a wired backhaul need to use a wireless backhaul to connect to an access point with a wired backhaul via wireless single-hop or multi-hop.
  • the backhaul energy consumption of dense networks cannot be ignored.
  • the multi-hop backhaul in addition to the backhaul to transmit the access service of the cell, it also provides relay backhaul transmission for other cells.
  • a cell has a low access load or even 0, but if it is in a location, it can provide good relay for other cells.
  • Service (such as being closer to an access point or gateway with a wired backhaul) is advantageous from the perspective of the entire network, shutting down its access module and continuing to open its backhaul module.
  • LTE Long Term Evolution
  • the access module may be The interruption (or buffering) for a period of time, that is, the access of the base station can be short-lived, and then the sleep is provided for a period of time before the service is provided, and the user equipment does not need to switch to another cell.
  • the sleep time of the base station is not too long, the access impact is not large.
  • the base station backhaul module since the receiving module can consume less energy than the transmitting module, the base station can first enable the receiving module to buffer the received data for a period of time and then send the received data for a period of time.
  • the backhaul can be turned off frequently, so that the base station sleeps briefly or sleeps for a long time. In this way, by creating more sleep opportunities for the base station, service transmission and network energy conservation can be realized more flexibly.
  • the embodiment of the present invention comprehensively considers the access module and the backhaul module.
  • the access and the backhaul of the base station 104 in FIG. 1 can be both closed, the access of the second micro base station 105 is turned off, and the access and the backhaul of the second macro base station 102 can be closed to achieve energy saving.
  • the embodiment of the present invention is based on the access module and the backhaul module in the above idea, and considers various aspects of the current working state of the base station, and then determines the working state that the base station is about to enter.
  • the number of the core network, the base station, and the user equipment in the communication system in the embodiment of the present invention is not limited.
  • the scenario FIG. 1 and the embodiments described later FIG. 2 to FIG. 10 are merely exemplary.
  • FIG. 2 is a schematic flow chart of a method for adjusting energy loss of a wireless network system according to an embodiment of the present invention.
  • the first access information includes at least one of channel state information, traffic volume, and quality of service QoS corresponding to the user equipment accessing the first base station.
  • the first backhaul information is information of a backhaul link of the first base station.
  • the first working state information is used to indicate the current access working state and the backhaul working state of the first base station.
  • the second access information includes channel state information, traffic volume, and user equipment corresponding to the user equipment accessing the second base station. At least one of QoS.
  • the second backhaul information is information of a backhaul link of the second base station.
  • the second working state information is used to indicate the current access working state and the backhaul working state of the second base station.
  • the access working state and the backhaul that the base station is about to enter are determined according to the access information of the user accessing each base station in at least two base stations, the backhaul information of each base station, and the current working state of each base station.
  • Working state which can reduce the energy loss of the system while making full use of the network use efficiency.
  • the access information may be information corresponding to the user equipment accessing the base station.
  • the first access information includes at least one of first channel state information, first traffic volume, and first quality of service (QoS) corresponding to the user equipment that accesses the first base station
  • second The access information includes at least one of second channel state information, a second traffic volume, and a second QoS corresponding to the user equipment that accesses the second base station.
  • QoS quality of service
  • the first QoS includes at least one of a first service delay, a first transmission rate, and a first packet loss rate
  • the second QoS includes a second service delay, a second transmission rate, and a second packet loss rate. At least one of them.
  • the first and second in the embodiment of the present invention are only used to distinguish information corresponding to different base stations.
  • the services of the same user equipment can have one, two or more.
  • the first service delay in the embodiment of the present invention is a service delay of at least one service of the user equipment that accesses the first base station.
  • the second service delay is a service delay of at least one service of the user equipment that accesses the second base station.
  • the backhaul information is information of a backhaul link between the base station and the core network or other base stations.
  • the backhaul information of the first base station (that is, the first backhaul information) is the information of the backhaul link of the first base station.
  • the second backhaul information is information of a backhaul link of the second base station.
  • the first backhaul information includes at least one of a backhaul cache capacity, a backhaul link capacity, and service requirement information of the first base station.
  • the second backhaul information includes at least one of a backhaul buffer capacity, a backhaul link capacity, and a service requirement of the second base station.
  • the service requirement information includes at least one of backhaul traffic, backhaul service QoS, and backhaul routing information.
  • the working state of the base station can be divided into three modes according to the energy saving level, for example, different energy consumption levels, conversion duration, sleep duration, etc.: normal mode, discontinuous transmission (Discontinuous Transmission, DTX) mode, OFF mode.
  • the access working state may be a normal access mode, a DTX access mode, and an OFF access mode.
  • the return working state can be a normal backhaul mode, a DTX backhaul mode, and an OFF backhaul mode. Note that in the present invention, the "working state” and the "working mode" can be used interchangeably.
  • the access working state may be a normal access mode, a DTX access mode, or an OFF access mode
  • the backhaul working state may be a normal backhaul mode, a DTX backhaul mode, or an OFF backhaul mode.
  • the normal mode may include that both the sending unit and the receiving unit in the access module and the backhaul module work normally, and data can be normally transmitted/received.
  • the DTX mode can also be called a short sleep mode, which can achieve sub-frame sleep.
  • the receiving unit during DTX mode sleep can work normally or can be turned off, and the sending unit can turn off or send only a small number of necessary signals such as synchronization signals and discovery signals; for the access module, during the activation of the DTX mode, the transmitting unit Data can be sent normally.
  • the base station is in the DTX mode, it is not necessary to switch the user it serves to other cells (here, the handover due to the deterioration of the link quality may not be included).
  • the receiving unit of the DTX mode can be turned on to receive signals or data sent by other nodes, or signals sent by the controller or Operation and Maintenance (OAM), etc. .
  • OAM Operation and Maintenance
  • the transmitting unit can turn off or send only a small number of necessary signals such as synchronization signals, discovery signals, etc., and the transmitting unit can normally transmit data during DTX mode activation.
  • the base station is in the DTX backhaul mode, the backhaul route using the base station relay data does not need to be changed.
  • the period of the DTX mode may be a continuous sleep time followed by a continuous activation time, as shown in Table 1.
  • Table 1 illustrates the DTX mode information by taking the 3GPP TS36.423 format as an example.
  • the period of the DTX mode may also be an arbitrary pattern, that is, in one cycle, the sleep time is not necessarily continuous, and the activation time is not necessarily continuous.
  • the period is represented in the form of a bitmap, and the time granularity may be a transmission time interval (TTI), and each bit may indicate whether the corresponding TTI is dormant or active, as shown in Table 2.
  • Table 2 illustrates the DTX mode information by taking the 3GPP TS36.423 format as an example.
  • the information element (IE) or IE group name indication in Table 1 and Table 2 includes a DTX pattern. Presence can be used to indicate whether the IE or IE group must exist. Information element type and reference (IE type and reference) are used to indicate the type and number of IE Range of values. A semantic description is used to describe the semantics of an IE or IE group name.
  • the maximum continuous duration or maximum duration in Tables 1 and 2 can be a fixed value and can be set in advance. For example, if the period of DTX does not exceed 1 minute, the maximum continuous duration or maximum time can be set to 60,000 or more.
  • the OFF mode can also be referred to as a deep sleep mode, which can be a sleep of minutes or hours.
  • both the receiving unit and the transmitting unit of the OFF mode can be turned off.
  • the backhaul module considering that the energy consumption of the receiving module relative to the transmitting module is low, when the energy saving is required, the transmitting unit can be preferentially turned off. Therefore, when the receiving unit energy loss is small, the receiving unit in the OFF mode can also be selected to be turned on.
  • the base station access module Before the base station access module enters the OFF mode, the user it serves must be handed over to other cells. Before the base station backhaul module enters the OFF mode, the backhaul route using the base station relay data needs to be updated, that is, other base stations cannot use the base station backhaul data.
  • the normal mode cannot directly enter the OFF mode and needs to transition through the DTX mode. That is, when the normal mode is to enter the energy saving mode, the DTX mode can be entered first. When the number of consecutive cycles of the DTX mode exceeds a certain preset value, consider switching the DTX mode to the OFF mode. However, DTX mode or OFF mode can directly enter the normal mode.
  • the working state mode of the access module and the backhaul module may be different, for example, when the access module When in the OFF mode, the backhaul module can be in normal mode, DTX mode, or OFF mode. However, in general, when the access module is in the normal mode or the DTX mode, the backhaul should not enter the OFF mode, that is, for the same base station, if the access module does not enter the OFF mode, the backhaul module should not enter the OFF mode.
  • the mode information of the working state of the base station in the embodiment of the present invention may be defined in accordance with Table 3 below.
  • the DTX pattern in Table 3 is a newly introduced Information Element (IE), and a possible implementation is shown in Table 1 or Table 2.
  • IE Information Element
  • the OFF duration or OFF duration can be an integer (Integer) form or a predefined series of enumerated value forms.
  • the range of OFF durations should be set large enough to accommodate more flexible energy-saving operations.
  • the information element IE or IE group name in Table 3 indicates the name of the IE or IE group.
  • the IE group is work mode information, and the included IE has a start time, a work mode, a DTX pattern, and an OFF duration. Presence can be used to indicate whether the IE or IE group must exist.
  • Information element types and references (IE type and reference) are used to indicate the IE type and value range. A semantic description is used to describe the semantics of an IE or IE group name.
  • the method of FIG. 2 may be performed by a first base station or by a controller.
  • each base station may according to its own access information, backhaul information, and current working status, as well as the received access information, backhaul information, and current working status of other base stations. Make decisions about the work status that you are about to enter.
  • the controller can make decisions about the working states that all base stations are about to enter according to the access information, backhaul information, and current working status of all base stations.
  • the controller makes a unified decision, since the controller itself holds the information of all the base stations, it is more conducive to energy saving than the decision result obtained by the base station itself, but the implementation complexity is relatively higher.
  • acquiring the second access information, the second backhaul information, and the current second working state information of the second base station in step 201 may include receiving the second connection sent by the second base station.
  • Information, second backhaul information, and second work status information That is, the second base station may send the second access information, the second backhaul information, and the second working state information of the second base station to the first base station.
  • the interaction information between the base stations may be transmitted by modifying the information in the existing protocol or introducing a new message to carry the interactive information.
  • an existing X2AP message may be modified between base stations, such as introducing a new information element (IE), or introducing a new X2AP message for information interaction.
  • IE information element
  • Table 4 shows the WORK MODE UPDATE message by introducing a new X2 Interface Protocol (X2AP) message for information exchange.
  • the message format refers to 3GPP TS 36.423.
  • Each IE/IE group in Table 4 has criticality information.
  • the “YES” in the table indicates that the non-repeating IE has criticality information, the “-” indicates that there is no criticality information, and the “EACH” indicates that the duplicate is IE.
  • each IE/IE group can have its own criticality information.
  • the assigned criticality may indicate the operation of the receiver when receiving an incomprehensible IE or IE group.
  • "ignore" means ignore, and "reject” means reject.
  • the working mode information in Table 4 is the newly introduced IE group, and a feasible example is shown in Table 3.
  • the design of Table 4 is based on the fact that one base station may serve multiple cells, and the working mode changes of each serving cell are not necessarily the same, and the working mode changes of the access and backhaul of the same cell are also May be different.
  • the working state mode of the base station changes and the neighboring base station is notified, only the working modes of those cells in which the operating mode changes of the neighboring base stations may be notified. For a cell in which a change in operating mode occurs, it is necessary to indicate whether the mode of the working state of the access module or the backhaul module has changed, or whether both have changed.
  • the first base station may also obtain access information, backhaul information, and current working state information of other base stations, and according to the obtained access information, backhaul information, and current working state information of all base stations. Determine the status of your upcoming work.
  • the third working state information may be sent to the second base station, where the third working state information is used to indicate that the first base station is to enter. Access to work status and/or backhaul work status. In this way, the second base station can timely consider the changed working state of the first base station when determining the working state of the second base station, and further adjust the control efficiency of the energy loss in time.
  • the working state information of the access and the backhaul is sent to the second base station regardless of whether the working state of the access and the backhab changes.
  • Another implementation manner of the embodiment of the present invention is that only the working state information of the module whose state is changed is changed, or the working state information of the module that has not changed is set to NULL, when the second base station does not receive the corresponding module.
  • the working status information or the working status information of the corresponding module is empty, it is considered that the working state of the corresponding module of the first base station has not changed.
  • the user equipment accessing the first base station may be appropriately configured according to the access working state and the backhaul working state to be entered.
  • the backhaul route is updated by the first base station.
  • the user equipment accessing the first base station when the access working state to be entered by the first base station is a discontinuous transmission DTX access mode, the user equipment accessing the first base station is configured to be discontinuous reception (DRX) mode or by air interface signaling.
  • the configuration parameters of the DRX mode of the user equipment accessing the first base station are updated.
  • the access working state to be entered by the first base station is the OFF access mode, the user equipment accessing the first base station is switched to access other base stations by air interface signaling.
  • the backhaul working state to be entered by the first base station is the OFF backhaul mode, the backhaul service is switched to the backhaul through the other base stations.
  • the user equipment of the access base station may be configured into the DRX mode by air interface signaling.
  • the DRX mode of different user equipment Configuration parameters can vary. In this way, energy saving can be further achieved by reconfiguring or updating the working state mode of the UE.
  • step 202 determines the first base station according to the first access information, the first backhaul information, the first working state information, the second access information, the second backhaul information, and the second working state information.
  • the access working state and the back working state to be entered may include: calculating, according to the first access information, the first backhaul information, the first working state information, the second access information, the second backhaul information, and the second working state information.
  • TTIs transmission time intervals
  • the access working state and the backhaul working state to be entered by the first base station are collectively referred to as a third working state.
  • the first sleep duration and the second sleep duration are preset, and the first sleep duration is less than the second sleep duration.
  • determining that the third working state is the normal mode; when the calculated number of TTIs is greater than the first sleep duration and less than the second sleep duration, determining that the third working state is DTX Mode; when the calculated number of TTIs is greater than or equal to the second sleep duration, it is determined that the third operating state is the OFF mode.
  • the third working state here corresponds to the module corresponding to the calculated number of TTIs.
  • the sleep duration threshold value of the access is also compared with the calculated TTI number.
  • the determined third working state is a third access working state.
  • the sleep time threshold value of the backhaul is also compared with the calculated TTI, and the determined third working state is the third backhaul working state.
  • TTI refers to a minimum scheduling time unit, for example, the TTI in an LTE system may be 1 ms.
  • the TTI number is generally used to indicate the time required to meet the business requirements.
  • the first access information, the first backhaul information, and the first working state information of the first base station, and the second access information of the second base station, and the second The backhaul information and the second back state information may include receiving the first access information, the first backhaul information, and the first working state information sent by the first base station, and receiving the second access information and the second backhaul information sent by the second base station. And second working status information.
  • the controller can determine the operational status of any of the base stations. For example, the controller may determine, according to the first access information, the first backhaul information, the first working state information, the second access information, the second backhaul information, and the second working state information, the access to be accessed by the second base station. Working status and return working status.
  • the controller may also obtain access information, backhaul information, and current working status of other base stations, and determine each base station according to access information, backhaul information, and current working status of all base stations. Enter the working status.
  • the controller is a logical entity.
  • the controller may be located in a service gateway (SGW), a Mobility Management Entity (MME), and a software definition.
  • SGW service gateway
  • MME Mobility Management Entity
  • SDN Software Defined Networks
  • the controller When the controller is located at the SGW or the MME, the controller can connect to the cell through the S1 interface. When the controller is located in the SDN controller, the controller can connect to the cell through the southbound interface. When the controller is located in some base stations, such as a macro base station, the controller can connect with other cells through the X2 interface.
  • the controller may be located in a Radio Network Controller (RNC) or a Serving GPRS Supporting Point (Serving GPRS Supporting). Node, SGSN).
  • RNC Radio Network Controller
  • SGSN Serving GPRS Supporting Point
  • the controller Since the controller has information about all the nodes in the network, it can be globally optimized to minimize the energy consumption of the entire network to meet the business needs. While making full use of the network use efficiency, more base stations enter the energy-saving mode to achieve system energy conservation.
  • the controller can perform the global optimization in an iterative manner, that is, when making decisions for one base station, assuming that the working states of other base stations are known, aiming at maximizing energy saving, determining the working state of the base station, and then determining in a similar manner The working state of the next base station until all the working states of the base station reach a stable state, and all the base stations are notified of the working state to be entered.
  • This centralized implementation can consider the impact of the working states of the base stations at the same time, and the result of the decision can be better than the energy saving effect of the distributed implementation.
  • the access link may include a radio link of multiple user equipments (including the radio link of the user equipment of the local cell, and may also include user equipments switched by other cells).
  • Wireless link The radio link of multiple user equipments has heterogeneous characteristics, and the controller can be based on the service requirements of each user equipment (for example, the traffic volume or delay characteristics to be transmitted by each user equipment in a period of time T, where the traffic can be based on the base station.
  • the statistics or prediction or user reporting the channel information of the user equipment, the buffer occupancy information (eg, the buffer capacity), and the backhaul status information, estimate the access resource requirements of the total cell (eg, the number of transmission time intervals TTI).
  • the controller may determine whether the energy saving mode can be determined by the access resource requirement of the total cell, and further determine which energy saving mode to enter (eg, discontinuous transmission DTX mode or OFF OFF mode) and parameter configuration of the corresponding energy saving mode.
  • the controller can determine which working state the base station access module is about to enter in the following manner.
  • the sleep duration threshold 1 and the sleep duration threshold 2 are preset, and the sleep duration threshold 1 ⁇ sleep duration threshold 2 is assumed. If the controller obtains a decision, the base station access module can sleep for longer than the sleep duration threshold 1 but less than the sleep duration threshold 2, Then the base station can enter the discontinuous transmission DTX mode. If the duration of the sleep can be greater than or equal to the sleep duration threshold 2, and the user equipment served by the base station can be handed over to the neighboring cell, the base station access module can enter the OFF mode. If the controller determines by the decision that the base station access module can sleep for less than or equal to the sleep duration threshold 1, the base station access module can enter the normal mode.
  • the controller globally optimizes the backhaul operation status of the base station, it may be assumed that the association relationship between the user equipment and the base station has been determined, and the backhaul routes of the base stations are known. Assume that the delay of other links is known on an end-to-end path (a simple method is to assume that the delay is equally divided on each link), and the link can be estimated based on the maximum tolerant delay of the service. the remaining time delay, the delay of the remainder of the related information of all service station, the buffer amount, and other neighboring link quality can be estimated within t time 0, the time required to meet all the requirements of the base station service delay t. 3 Thus, the time t 2 at which sleep can be entered is t 0 -t 3 .
  • the controller can determine which working state the base station backhaul module enters by the following means.
  • the sleep duration threshold 3 and the sleep duration threshold 4 are preset, and it is assumed that the sleep duration threshold 3 is less than the sleep duration threshold 4. If t 2 is greater than the sleep duration threshold 3 but less than the sleep duration threshold 4, the controller may decide that the base station backhaul module can enter. Discontinuous transmission of DTX mode. If t 2 is greater than or equal to the sleep duration threshold 4, and the neighboring base station can accept the original backhaul load of the base station, the controller can decide that the base station backhaul module can enter the OFF mode. If t 2 is less than or equal to the sleep duration threshold of 3, the base station backhaul module can enter the normal mode.
  • the backhaul should not enter the OFF mode. If a backhaul link enters DTX mode, the route of the backhaul link does not need to be updated. If a backhaul link enters the OFF mode, the base station using the backhaul link needs to re-find the backhaul route. If the backhaul link goes from OFF mode to ON mode, the backhaul route also needs to be re-updated.
  • the controller or the base station may determine the access worker according to the access information. State. That is, when the decision is made on the access working state, the backhaul information may not be considered. For example, it may be assumed that the backhaul capability is not limited.
  • FIG. 3 is a schematic interaction diagram of a centralized implementation of a method of adjusting energy loss of a wireless network system in accordance with an embodiment of the present invention.
  • the system for adjusting a wireless network in the embodiment of the present invention includes UE1, BS1, controller, BS2, and UE2. Among them, UE1 accesses BS1, and UE2 accesses BS2.
  • UE1 accesses BS1
  • UE2 accesses BS2.
  • the example in which two base stations and two user equipments are included in the system is exemplified, but the present invention is not limited thereto. At least two base stations and at least two user equipments may be included in the system.
  • the UE reports the access information to the BS.
  • the UE may report the access information to the BS.
  • the UE1 may send the access information of the UE1 to the BS1, and the UE2 may send the access information of the UE2 to the BS2.
  • the access information may include channel state information and uplink service requirement information of the user equipment accessing a certain base station.
  • the channel status information (CSI) of the user equipment may be carried in a channel quality indicator (CQI), a rank indication (RI), and a precoding matrix indicator (Precoding Matrix Indicator). , PMI) report.
  • the service requirement information may include service information of a service that the link needs to transmit, for example, a service delay characteristic of the service to be transmitted, a traffic volume, and the like.
  • the traffic may be carried in the buffer status report (BSR) of the UE, but a finer granularity may also be adopted.
  • the serving base station For the activated UE, its serving base station stores its UE context information, including the session and bearer information of the UE, the bearer information includes the quality of service (QoS) requirement information of the service, and the QoS includes a packet delay budget (PDB). ), packet loss rate, for guaranteed bearer rate (Guaranteed Bit Rate) bearer also includes guaranteed rate requirements.
  • the delay characteristic information of the service corresponds to the PDB information.
  • the base station can obtain the service requirement information of the UE that it serves from the core network or itself, and does not need to report the UE.
  • the BS reports the access information and the backhaul information to the controller.
  • the base station may combine the stored UE context information and the cached service information to generate the processed access information, report the processed access information to the controller, and its own backhaul information. .
  • the processed access information includes CSI information and service requirement information of the UE.
  • the CSI information can be used in the CSI report for the inter-evolved Node B Coordinated Multi Point (inter-eNB CoMP), and the CSI report is included in the resource status update message.
  • inter-eNB CoMP inter-evolved Node B Coordinated Multi Point
  • the base station reports the service requirement information to the controller, it may be provided in the form of a single user (per-user) or in the form of a total cell per-cell.
  • the message format can borrow the UE's Buffer Status Report (BSR), but can be more granular.
  • the backhaul information may include a backhaul buffer capacity and a backhaul link capacity of the base station.
  • the backhaul cache capacity may include the maximum capacity of the backhaul cache, the current occupancy of the backhaul cache, or the remaining capacity of the backhaul cache.
  • the backhaul link capacity is used to indicate the data transmission rate that the corresponding backhaul link can carry.
  • the BS1 may send the access information of the BS1 and the backhaul information of the BS1 to the controller, and the BS2 may also send the access information of the BS2 and the backhaul information of the BS2 to the controller.
  • the controller determines, according to the access information reported by the BS, the backhaul information, and the working state information of the BS stored by the controller, the working states of the base stations.
  • the controller may make a decision on the working state of each BS according to the access information reported by the BS, the backhaul information, and the working state information of the BS stored by the controller, and determine the working state that each BS wants to enter. In other words, the controller can determine the working state that each base station will enter next by decision. For example, the controller determines that the access side of BS1 enters the OFF mode, the backhaul side enters the discontinuous DTX backhaul mode, the access side of BS2 enters the discontinuous transmission DTX mode, and the backhaul side enters the discontinuous DTX backhaul mode.
  • the working state information of the BS stored by the controller is the working state of the BS or the working state of the BS obtained by the previous decision.
  • the working state to be entered by each BS may be the working state of the BS that is newly determined by re-determining the working state of each base station obtained by considering the starting working state of the BS or the previous decision, and the current access and backhaul information. .
  • the controller sends a decision result to the base station.
  • the controller After the controller obtains the decision result in step 303, the controller respectively sends a decision result corresponding thereto to each base station.
  • the decision result may include the working state that the base station is about to enter and the time when the working state is to be entered, and the decision result information sent to the base station may be provided by using the message shown in Table 4.
  • the DTX configuration information may be included in the decision result, such as the information shown in Table 1 or Table 2.
  • the decision result When the working state that the base station is about to enter is OFF, the decision result may include the length of time to enter OFF. The moment when it is about to enter the working state can include the transmission of the decision result The delay of transmission, the processing delay of the base station processing decision result, and the delay of the base station to change the working state.
  • the controller sends the access side of BS1 to BS1 to enter the OFF mode, the backhaul side is about to enter the discontinuous DTX backhaul mode, and the access side of BS2 is sent to BS2 to enter the discontinuous transmission DTX mode, and the return side is about to enter the discontinuous mode.
  • DTX backhaul mode For example, the controller sends the access side of BS1 to BS1 to enter the OFF mode, the backhaul side is about to enter the discontinuous DTX backhaul mode, and the access side of BS2 is sent to BS2 to enter the discontinuous transmission DTX mode, and the return side is about to enter the discontinuous mode.
  • DTX backhaul mode the controller sends the access side of BS1 to BS1 to enter the OFF mode, the backhaul side is about to enter the discontinuous DTX backhaul mode, and the access side of BS2 is sent to BS2 to enter the discontinuous transmission DTX mode, and the return side is about
  • the controller may further configure or update a backhaul route of each base station based on the result of the decision.
  • the base station can perform state configuration on the UE.
  • the base station can configure the accessed UE according to the working state in the decision result. For example, when the access side of BS1 is about to enter the OFF access mode, BS1 may send a handover instruction to UE1, so that UE1 switches to other base stations.
  • the state of the UE is configured by the base station, so that the UE can also selectively enter the power-on mode or the power-saving mode to further implement system energy saving, and can adjust the energy loss of the system while fully utilizing the network use efficiency.
  • the BS enters a corresponding working state according to the result of the decision.
  • the base station can enter a corresponding working state according to the decision result, where the working state includes an access working state and a back working state.
  • the working state includes an access working state and a back working state.
  • the access side of BS1 enters the normal access mode, and in this step, BS1 enters the normal access mode at the time specified by the decision result.
  • determining, according to the access information, the backhaul information, and the current working state of the user equipment of each of the at least two base stations determining that the access working state/return working state of each base station is in the normal mode, In the DTX mode or the OFF mode, by causing some base stations to enter the energy-saving mode, the energy consumption of the system can be adjusted while fully utilizing the network use efficiency.
  • the base station can also be configured to enter a corresponding energy-saving mode of the UE, and the energy loss of the system can be adjusted while fully utilizing the network usage efficiency.
  • FIG. 4 is a schematic interaction diagram of a distributed implementation of a method for adjusting energy loss of a wireless network system in accordance with an embodiment of the present invention.
  • the system for adjusting a wireless network in the embodiment of the present invention includes UE1, BS1, BS2, and UE2. Among them, UE1 accesses BS1, UE2 accesses BS2, and there is a wireless backhaul connection between BS1 and BS2.
  • UE1 accesses BS1, UE2 accesses BS2, and there is a wireless backhaul connection between BS1 and BS2.
  • the example in which two base stations and two user equipments are included in the system is exemplified, but the present invention is not limited thereto. At least two base stations and at least two user equipments may be included in the system.
  • the UE reports the access information to the BS.
  • the UE may report the access information to the serving BS.
  • UE1 may send access information of UE1 to BS1
  • UE2 may send access information of UE2 to BS2.
  • Access information can include access Channel state information and uplink service demand information of user equipment of a certain base station.
  • the channel status information (CSI) of the user equipment may be carried in a channel quality indicator (CQI), a rank indication (RI), and a precoding matrix indicator (Precoding Matrix Indicator). , PMI) report.
  • the service requirement information may include service information of a service that the link needs to transmit, for example, a service delay characteristic of the service to be transmitted, a traffic volume, and the like.
  • the traffic may be carried in the buffer status report (BSR) of the UE, but a finer granularity may also be adopted.
  • the serving base station For the activated UE, its serving base station stores its UE context information, including the session and bearer information of the UE, the bearer information includes the quality of service (QoS) requirement information of the service, and the QoS includes a packet delay budget (PDB). ), packet loss rate, for guaranteed bearer rate (Guaranteed Bit Rate) bearer also includes guaranteed rate requirements.
  • the delay characteristic information of the service corresponds to the PDB information.
  • the base station can obtain the service requirement information of the UE that it serves from the core network or itself, and does not need to report the UE.
  • the base station may combine the stored UE context information and the cached service information to generate processed access information and backhaul service requirement information, and report the processed access information to the controller. Its own backhaul information, as well as its current working status information.
  • the backhaul information may include backhaul buffer capacity, backhaul link capacity, and backhaul service demand of a certain base station.
  • the backhaul cache capacity may include the maximum capacity of the backhaul cache, the current occupancy of the backhaul cache, or the remaining capacity of the backhaul cache.
  • the backhaul link capacity is used to indicate the data transmission rate that the corresponding backhaul link can carry.
  • the BS1 may send the BS1 processed access information, the backhaul service demand information, the backhaul information, and the current working state of the BS1 itself to the BS2.
  • the BS2 may also send the BS2 processed access information, the backhaul information, and the current working state of the BS2 itself to the BS1.
  • the interaction information between the base stations can be transmitted by modifying the information in the existing protocol or introducing a new message to carry the interactive information.
  • information exchange between base stations can be performed by modifying an existing X2AP message or introducing a new X2AP message.
  • the backhaul buffer capacity and the backhaul link capacity are provided to introduce a new X2AP message, or to add a new information element to an existing X2AP message, such as a load information (LOAD INFORMATION) or a resource status update (RESOURCE STATUS UPDATE) message. (Information Element, IE) provided.
  • the processed access information includes CSI information of the UE.
  • the CSI information may be a CSI report for an inter-evolved Node B Coordinated Multi Point (inter-eNB CoMP), where the CSI report is included in the resource status update message.
  • inter-eNB CoMP inter-evolved Node B Coordinated Multi Point
  • the backhaul service requirement information is demand information of all services that need to be returned by the base station, and the services include the access service of the base station itself, and the services of other base stations that are backhauled by the base station, so in addition to traffic and service QoS,
  • the base station When the base station interacts with the service demand information, it may be provided in the form of a single user (per-user) or in the form of a total cell per-cell.
  • the message format can borrow the UE's Buffer Status Report (BSR), but can be more granular.
  • the work status information can be provided using the message shown in Table 4.
  • step 402 may be carried in multiple messages.
  • the information of step 402 may be initiated by the base station (if the corresponding value changes), or may be triggered by the request of the base station.
  • Each BS determines, according to its own information and information sent by other base stations, the working state that each base station is to enter.
  • Each base station can make decisions on its own working state according to its own information (including its own access information, backhaul information and working status) and access information, backhaul information and working status sent by other base stations. In other words, each base station can decide the working state to be entered in the next stage according to its own information and the information of other base stations around it.
  • BS1 can obtain that the access module of BS1 enters the OFF access mode, and the backhaul module enters the DTX backhaul mode.
  • the BS2 can obtain the access module of the BS2 to enter the DTX mode through the decision, and the backhaul module enters the DTX backhaul mode.
  • each base station After obtaining the decision result in step 303, each base station sends a decision result to the neighboring base station, where the decision result may include the working state that the base station is about to enter and the time when the working state is entered, and the result of the decision may be provided by using the message shown in Table 4. .
  • the DTX configuration information may be included in the decision result, such as Table 1 or Table 2.
  • the decision result When the working state that the base station is about to enter is OFF, the decision result may include the length of time to be turned OFF.
  • the time when the working state is entered may include the transmission delay of the decision result, the processing delay of the base station processing the decision result, and the delay of the base station performing the working state transition.
  • the access side of BS1 transmitting BS1 to BS2 is about to enter the OFF access mode, and the backhaul side is about to enter the DTX backhaul mode.
  • the access side of BS2 transmitting BS2 to BS1 is about to enter DTX mode, and the backhaul side is about to enter DTX backhaul mode.
  • the base station can perform state configuration on the UE.
  • the base station may configure the accessed UE or the UE through which the backhaul passes according to the working state to be entered in the decision result. For example, when the access side of BS1 is about to enter the OFF access mode, BS1 may send a handover instruction to UE1, so that UE1 switches to other base stations.
  • the state of the UE is configured by the base station, so that the UE can also selectively enter the power-on mode or the power-saving mode to further implement system energy saving, and can adjust the energy loss of the system while fully utilizing the network use efficiency.
  • the BS enters a corresponding working state according to the decision result.
  • the base station can enter a corresponding working state according to the decision result, where the working state includes an access working state and a back working state.
  • the working state includes an access working state and a back working state.
  • the access side of BS1 enters the normal access mode, and in this step, BS1 enters the normal access mode at the time specified by the decision result.
  • the access working state/return working state that each base station is about to enter is determined according to the access information, the backhaul information, and the current working state of the user equipment of each of the at least two base stations.
  • DTX mode or OFF mode by making the access or backhaul of some base stations enter the energy-saving mode (including DTX mode or OFF mode), the energy loss of the system can be adjusted while fully utilizing the network use efficiency.
  • the base station can also be configured to enter a suitable energy-saving mode by using a corresponding part of the UE, and further adjust the energy loss of the system while fully utilizing the network use efficiency.
  • FIG. 5 is a schematic flow chart of a base station at each TTI in a wireless network system according to an embodiment of the present invention.
  • the overall process access and backhaul use similar considerations, but the TTI length can be different.
  • the specific algorithm for judging whether to enter DTX/OFF can be different.
  • the access DTX needs to consider matching with the user's DRX.
  • the base station may determine the TTI type of the current base station according to the transmission time interval in the timer and the counter, and the type of the TTI may be a normal TTI, a DTX sleep TTI, and an OFF sleep TTI.
  • the normal TTI in the embodiment of the present invention refers to all situations in which the base station can normally transmit data.
  • the normal TTI includes a TTI in which the working state of the base station is in the normal mode, a TTI in which the operating state of the base station has been determined to be in the power saving mode (DTX mode or OFF mode), but has not yet entered the power saving mode, and the power saving mode (including the DTX mode and the OFF mode).
  • the TTI activated after hibernation.
  • the base station can determine the current TTI and proceed to step 502.
  • the base station determines, according to a result of the last decision, an operating mode in which the current TTI corresponding module is located.
  • the base station may determine, according to the result of the last decision, the working mode in which the current TTI corresponding module (including the current TTI is the access module and/or the backhaul module). Then proceed to step 503.
  • step 504 is entered. Otherwise, go to step 505.
  • step 503 When it is determined in step 503 that the current TTI is in the normal mode, the normal mode TTI operation flow may be performed, and then proceeds to step 508.
  • step 503 When it is determined in step 503 that the current TTI is not in the DTX mode, the process proceeds to step 505.
  • step 506 is entered. Otherwise, proceed to step 507.
  • step 505 When it is determined in step 505 that the current TTI is in the DTX mode, the DTX mode TTI operation flow may be performed, and then proceeds to step 508.
  • step 505 When it is determined in step 505 that the current TTI is not in the DTX mode, the process proceeds to step 507.
  • step 505 When it is determined in step 505 that the current TTI is not in the DTX mode, the OFF mode TTI operation flow is executed, and then proceeds to step 508.
  • next TTI is entered, and the next TTI is regarded as the current TTI in step 501, and all the above processes of FIG. 5 are repeated.
  • FIG. 6 is a schematic diagram of an operation procedure of a base station determining that a current TTI of a corresponding module is in a normal mode in a wireless network system according to an embodiment of the present invention.
  • the basic principles for scheduling service transmission include scheduling as many services as possible for transmission, pre-buffering for some services, and scheduling services with priority scheduling time.
  • the user equipment state may also be scheduled, for example, when the device is in the DRX state, the service of the user equipment during the DRX sleep period is not scheduled.
  • the base station works in a high-capacity area to utilize energy more efficiently. Therefore, in principle, the scheduling service can transmit as many services as possible.
  • step 609 If the base station has decided that the corresponding module will enter the DTX mode but has not entered, ie, is in the normal mode transition to the DTX mode, then proceeds to step 609 and the flow ends.
  • step 604 determines whether the decision is to enter the OFF mode.
  • step 609 If it has been decided that the corresponding module will enter the OFF mode but has not entered, that is, when the DTX mode is transitioning to the OFF mode, the flow proceeds to step 609, and the flow ends.
  • step 606 the flow proceeds to step 606 to continue calculating the total access resource requirements based on the access information and the backhaul information.
  • the base station may estimate the total cell resource requirement according to the access information of the access module (for example, the channel state information of the UE accessing the base station, the service requirement information, the buffer capacity), and the backhaul state information, for example, Calculate the number of TTIs that the access module needs to transmit data.
  • the access information of the access module for example, the channel state information of the UE accessing the base station, the service requirement information, the buffer capacity
  • the backhaul state information for example, Calculate the number of TTIs that the access module needs to transmit data.
  • the backhaul status information can be used to determine the backhaul delay. Because the amount of backhaul delay affects the delay that the access module can tolerate, the amount of backhaul delay depends largely on the state it is in. An example is that the base station can record the delays corresponding to the configuration of different backhaul states by measurement (for example, by transmitting a null packet to measure round trip time, etc.).
  • the base station can estimate the total backhaul resource requirement according to the related information of the backhaul module (for example, the service requirement information of the backhaul by the base station, the backhaul buffer capacity, the backhaul link capacity), and the current working state of the base station, that is, Calculate the number of TTIs that the backhaul needs to transmit data.
  • the related information of the backhaul module for example, the service requirement information of the backhaul by the base station, the backhaul buffer capacity, the backhaul link capacity
  • the current working state of the base station that is, Calculate the number of TTIs that the backhaul needs to transmit data.
  • the base station may determine whether to enter the DTX mode according to the TTI number that the corresponding module needs to transmit data and the preset threshold value of the corresponding module calculated according to step 606.
  • the sleep duration threshold 1 and the sleep duration threshold 2 are preset, and the sleep duration threshold 1 ⁇ sleep duration threshold 2 is assumed. If the number of TTIs calculated by the base station in step 606 is greater than or equal to the sleep duration threshold of 1, the base station may enter the discontinuous transmission DTX mode, and the process proceeds to step 608. If the number of TTIs calculated by the base station in step 606 is less than the sleep duration threshold of 1 and the DTX mode cannot be entered, the mode in which the base station is located will remain in the normal mode, and the process proceeds to step 609, and the process ends.
  • the base station may need to consider the operational status information of other base stations, determine the configuration of the DTX mode, and the parameters of the time point and DTX mode entering the mode.
  • the DTX mode of the cell with more serious mutual interference can be staggered in the time domain by setting an appropriate value, so that the interference between the cells can be reasonably coordinated, and the energy loss can be further adjusted.
  • the influence of the backhaul delay (for example, the transmission delay of the signaling message backhaul), the processing delay, and the like may be taken into consideration when determining the configuration of the DTX mode and the time point of entering the mode.
  • the base station may send the changed parameters to other neighboring base stations, so that when other base stations make decisions about their working states, the changed parameters of the base station are considered.
  • the base station may further reconfigure the UE accessed by the base station, and if the reconfiguration causes the DRX configuration parameter of the UE to change, the UE shall be notified of the changed configuration.
  • N1 represents the number of cycles of continuous DTX.
  • n1 an integer greater than or equal to 1
  • the process of accessing and backhaul is similar.
  • steps 606-608 the specific operations of the access and backhaul will be different, as explained in the flow description section above.
  • the process after 606 can be performed without each TTI, and can be run once every other time, which can reduce the complexity of the entire system.
  • FIG. 7 is a diagram showing a current determination of a corresponding module by a base station in a wireless network system according to an embodiment of the present invention. Schematic diagram of the operational flow of the TTI in DTX mode.
  • the flow begins here, and then proceeds to step 602.
  • step 703 If it is determined that the current TTI is a DTX activation TTI, the flow proceeds to step 703 to schedule a traffic transmission.
  • the service is not required to be transmitted, and the process may directly proceed to step 704.
  • the basic principles for scheduling service transmission include scheduling as many services as possible for transmission, pre-buffering for some services, and scheduling services with priority scheduling time.
  • the user equipment state may also be scheduled, for example, when the device is in the DRX state, the service of the user equipment during the DRX sleep period is not scheduled.
  • the base station works in a high-capacity area to utilize energy more efficiently. Therefore, in principle, the scheduling service can transmit as many services as possible.
  • step 715 If it is determined that the DTX cycle is not ending at the current TTI, the flow proceeds to step 715, and the flow ends. Otherwise, the flow proceeds to step 705.
  • the base station may estimate the total cell resource requirement according to the access information of the access module (for example, the channel state information of the UE accessing the base station, the service requirement information, the buffer capacity), and the backhaul state information, for example, Calculate the number of TTIs that the access module needs to transmit data.
  • the access information of the access module for example, the channel state information of the UE accessing the base station, the service requirement information, the buffer capacity
  • the backhaul state information for example, Calculate the number of TTIs that the access module needs to transmit data.
  • the backhaul status information can be used to determine the backhaul delay. Because the amount of backhaul delay affects the delay that the access module can tolerate, the amount of backhaul delay depends largely on the state it is in. An example is that a base station can record different times by measuring (for example, by transmitting a null packet to measure round trip time, etc.) The delay between the process state and the configuration.
  • the base station can estimate the total backhaul resource requirement according to the related information of the backhaul module (for example, the service requirement information of the backhaul by the base station, the backhaul buffer capacity, the backhaul link capacity), and the current working state of the base station, that is, Calculate the number of TTIs that the backhaul needs to transmit data.
  • the related information of the backhaul module for example, the service requirement information of the backhaul by the base station, the backhaul buffer capacity, the backhaul link capacity
  • the current working state of the base station that is, Calculate the number of TTIs that the backhaul needs to transmit data.
  • the base station may determine whether to enter the DTX mode according to the TTI number of the corresponding module that is calculated by the corresponding module calculated in step 706 and the preset threshold of the corresponding module.
  • the sleep duration threshold 1 and the sleep duration threshold 2 are preset, and the sleep duration threshold 1 ⁇ sleep duration threshold 2 is assumed. If the number of TTIs calculated by the base station in step 706 is greater than or equal to the sleep duration threshold of 1, the base station may enter the discontinuous transmission DTX mode, and the process proceeds to step 709. If the number of TTIs calculated by the base station in step 706 is less than the sleep duration threshold of 1, the DTX mode cannot be entered, the base station will enter the normal mode, and the flow proceeds to step 708.
  • the working state information of other base stations needs to be considered to avoid strong interference to other base stations or other base stations, for example, to avoid all base stations entering the normal mode at the same time, causing sudden changes in interference.
  • the impact of the backhaul delay (signaling message transmission delay) and processing delay on the time point of entering the normal mode should be considered.
  • N1> n1 (n1 is a preset positive integer) does not hold, it indicates that the OFF mode has not yet been entered, and the flow proceeds to step 710 to determine whether the DTX mode configuration is to be updated.
  • step 713 the flow advances to step 713 to continue to judge whether or not the OFF mode can be entered.
  • step 712 If the resource demand change compared to the previous DTX mode decision is less than the preset value, then it is considered that the current DTX mode configuration can continue to be used, and the flow proceeds to step 712. Otherwise, a new DTX mode configuration can be adopted, and the flow proceeds to step 711. Determine if you need to update the DTX mode configuration. There can be other ways, and only one of them is given in the embodiment of the present invention.
  • the configuration of the next DTX mode and the determination of the time point of entering the mode need to consider the working state information of other base stations.
  • the DTX mode of the cell with relatively serious mutual interference is staggered in the time domain.
  • the effect of reasonable coordination of inter-cell interference is achieved, and energy consumption is further adjusted.
  • the impact of the backhaul delay (signaling message transmission delay), processing delay, etc. on the configuration of the next DTX mode and the time point of entering the mode should be considered.
  • the base station access or the backhaul is in the DTX mode.
  • the base station sends the changed parameters to other neighboring base stations, so that when other base stations make decisions about their working states, the changed parameters of the base station are considered.
  • the base station may also reconfigure the UE accessed by the base station, and if the reconfiguration causes the DRX configuration parameter of the UE to change, notify the UE of the changed configuration. At this time, the number of consecutive DTX cycles N1 needs to be reset to zero.
  • step 710 determines that the resource demand change is less than the preset value, the current DTX mode configuration can be maintained without notifying other base stations. The flow proceeds to step 715 and the flow ends.
  • the base station may determine whether to enter the DTX mode according to the TTI number of the corresponding module that is calculated by the corresponding module calculated in step 706 and the preset threshold of the corresponding module.
  • the sleep duration threshold 1 and the sleep duration threshold 2 are preset, and the sleep duration threshold 1 ⁇ sleep duration threshold 2 is assumed. If the number of TTIs calculated by the base station in step 706 is greater than or equal to the sleep duration threshold 2, the base station may enter the OFF mode, and the flow proceeds to step 714. There is an exception. As mentioned above, in general, for a base station, if its access does not enter OFF, the backhaul should not enter OFF. If the number of TTIs calculated by the base station in step 706 is less than the sleep duration threshold 2, the base station may not enter the OFF mode, but may continue to enter the DTX mode, and the flow proceeds to step 710.
  • the determination of the time point of entering the OFF mode should also consider the backhaul delay (signaling message transmission delay), processing delay, and the like.
  • the duration of the sleep should contain the time required to change from OFF mode to normal mode. After the OFF mode sleeps, Go directly to normal mode.
  • the serving UE For the access module, the serving UE needs to be switched to the appropriate neighboring cell.
  • the base station using the backhaul link needs to re-find the backhaul route.
  • FIG. 8 is a schematic diagram of an operation flow when a base station determines that a current TTI is in an OFF mode in a wireless network system according to an embodiment of the present invention.
  • the flow begins here, and then proceeds to step 602.
  • step 804. When the base station receives the wakeup, the flow proceeds to step 803.
  • the wake-up command can come from an Operation and Maintenance (OAM) or a request from a neighboring base station.
  • OAM Operation and Maintenance
  • the normal mode includes a normal access mode and a normal backhaul mode, corresponding to wake-up in different modes.
  • a normal access mode When entering the normal mode, it is necessary to consider the time when the related hardware is converted from OFF to the normal mode. At the same time, the delay that the neighboring station may consume may be considered to ensure that the actual state of the base station is unified with the state of the base station obtained by other base stations.
  • step 806 the flow ends.
  • step 806 the flow ends.
  • a method for adjusting energy loss of a wireless network system according to an embodiment of the present invention is described in detail above with reference to FIG. 2 to FIG. 8.
  • a method for adjusting a wireless network according to an embodiment of the present invention will be described with reference to FIG. 9 to FIG. A diagram of the device's energy loss.
  • FIG. 9 is a block diagram of an apparatus for adjusting energy loss of a wireless network system in accordance with an embodiment of the present invention.
  • the apparatus of Figure 9 can perform the corresponding methods of Figures 2-8.
  • the apparatus 10 of FIG. 9 includes an acquisition unit 11 and a first determination unit 12.
  • the obtaining unit 11 is configured to acquire first access information, first backhaul information, and first working state information of the first base station, and acquire second access information, second backhaul information, and second working state information of the second base station.
  • the first access information includes at least one of channel state information, traffic volume, and quality of service QoS corresponding to the user equipment accessing the first base station.
  • the first backhaul information is link information of the first base station.
  • the first working state information is used to indicate information of a backhaul link between the first base station and the core network or the third base station.
  • the second access information includes at least one of channel state information, traffic volume, and QoS corresponding to the user equipment accessing the second base station.
  • the second backhaul information is information of a backhaul link of the second base station.
  • the second working state information is used to indicate the current access working state and the backhaul working state of the second base station.
  • the first determining unit 12 is configured to determine, according to the first access information, the first backhaul information, the first working state information, the second access information, the second backhaul information, and the second working state information acquired by the acquiring unit, the first base station Access work status and return work status to enter.
  • the access working state and the backhaul that the base station is about to enter are determined according to the access information of the user accessing each base station in at least two base stations, the backhaul information of each base station, and the current working state of each base station.
  • Working state this can adjust the energy loss of the system while making full use of the network use efficiency.
  • the first backhaul information includes at least one of a backhaul cache capacity, a backhaul link capacity, and service requirement information of the first base station.
  • the second backhaul information includes at least one of a backhaul buffer capacity, a backhaul link capacity, and a service requirement of the second base station.
  • the service requirement information includes at least one of backhaul traffic, backhaul service QoS, and backhaul routing information.
  • the access working state is a normal access mode, a discontinuous transmission DTX access mode, or an OFF access mode
  • the backhaul working state is a normal backhaul mode, a DTX backhaul mode, or an OFF backhaul mode.
  • the device is a first base station
  • the acquiring unit is specifically configured to receive the second access information, the second backhaul information, and the second working state information that are sent by the second base station.
  • the device further includes a sending unit, where the sending unit is configured to send the third working state information to the second base station, where the third working state information is used to indicate the access working state that the first base station is to enter. And / or return work status.
  • the device further includes: a configuration unit, configured to configure, according to the access working state and the backhaul working state that the first base station enters, the user equipment that accesses the first base station, The base station performs routing of the backhaul to update.
  • a configuration unit configured to configure, according to the access working state and the backhaul working state that the first base station enters, the user equipment that accesses the first base station, The base station performs routing of the backhaul to update.
  • the configuration unit is configured to: when the access working state to be entered by the first base station is a DTX access mode, configuring, by using air interface signaling, the user equipment accessing the first base station to be discontinuous Receiving the DRX mode or updating the configuration parameter of the DRX mode of the user equipment accessing the first base station; when the access working state to be entered by the first base station is the OFF access mode, accessing the first base station by air interface signaling The user equipment is switched to access other base stations; when the backhaul working state to be entered by the first base station is the OFF backhaul mode, the backhaul service is switched to the backhaul through other base stations.
  • the first determining unit is specifically configured to use, according to the first access information, the first backhaul information, the first working state information, the second access information, the second backhaul information, and the second working state information.
  • the number of transmission time intervals TTI required for the transmission service of the first base station is calculated, and the number of TTIs and the preset sleep duration threshold are compared to determine an access working state and a backhaul working state to be entered by the first base station.
  • the device is a controller, where the device further includes a second determining unit, where the second determining unit is configured to use, according to the first access information, the first backhaul information, the first working state information, and the second access The information, the second backhaul information and the second working state information determine an access working state and a backhaul working state of the second base station to enter.
  • the acquiring unit is configured to receive, by the first base station, the first access information, the first backhaul information, and the first working state information, and receive the second access information sent by the second base station, Second backhaul information and second working status information.
  • the controller is located at a serving gateway SGW, a mobility management entity MME, a software defined network SDN controller or a base station.
  • An apparatus for adjusting energy loss of a wireless network system may correspond to a method of adjusting energy loss of a wireless network system according to an embodiment of the present invention, and each unit/module in the apparatus and the above other operations and/or The functions are respectively implemented in order to implement the corresponding processes of the method shown in FIG. 2 to FIG. 10, and are not described herein for brevity.
  • FIG. 10 is a block diagram of an apparatus for adjusting energy loss of a wireless network system in accordance with another embodiment of the present invention.
  • the apparatus 20 of FIG. 10 includes a transmitter 21, a receiver 22, a processor 23, and a memory 24.
  • the processor 23 controls the operation of the device 20 and can be used to process signals.
  • Memory 24 can include read only The memory and random access memory provide instructions and data to the processor 23.
  • the various components of device 20 are coupled together by a bus system 25, which in addition to the data bus includes a power bus, a control bus, and a status signal bus. However, for clarity of description, various buses are labeled as the bus system 25 in the figure.
  • the method disclosed in the above embodiments of the present invention may be applied to the processor 23 or implemented by the processor 23.
  • each step of the above method may be completed by an integrated logic circuit of hardware in the processor 23 or an instruction in a form of software.
  • the processor 23 can be a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, which can be implemented or executed in an embodiment of the invention.
  • a general purpose processor can be a microprocessor or any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present invention may be directly implemented as a hardware processor, or may be performed by a combination of hardware and software modules in the processor.
  • the software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
  • the storage medium is located in the memory 24, and the processor 23 reads the information in the memory 24 and, in conjunction with its hardware, performs the steps of the above method.
  • the processor 23 may acquire the first access information, the first backhaul information, and the first working state information of the first base station, and acquire the second access information, the second backhaul information, and the second working state of the second base station. And determining, according to the first access information, the first backhaul information, the first working state information, the second access information, the second backhaul information, and the second working state information, the third access work to be entered by the first base station Status and third return working status.
  • the first access information includes at least one of channel state information, traffic volume, and quality of service QoS corresponding to the user equipment that accesses the first base station.
  • the first backhaul information is link information of the first base station.
  • the first working state information is used to indicate information of a backhaul link between the first base station and the core network or the third base station.
  • the second access information includes at least one of channel state information, traffic volume, and QoS corresponding to the user equipment accessing the second base station.
  • the second backhaul information is information of a backhaul link of the second base station.
  • the second working state information is used to indicate the current access working state and the backhaul working state of the second base station.
  • the access working state and the backhaul that the base station is about to enter are determined according to the access information of the user accessing each base station in at least two base stations, the backhaul information of each base station, and the current working state of each base station.
  • Working state this can adjust the energy loss of the system while making full use of the network use efficiency.
  • the first backhaul information includes at least one of a backhaul cache capacity, a backhaul link capacity, and service requirement information of the first base station.
  • the second backhaul information includes at least one of a backhaul buffer capacity, a backhaul link capacity, and a service requirement of the second base station.
  • the service requirement information includes at least one of backhaul traffic, backhaul service QoS, and backhaul routing information.
  • the access working state is a normal access mode, a discontinuous transmission DTX access mode, or an OFF access mode
  • the backhaul working state is a normal backhaul mode, a DTX backhaul mode, or an OFF backhaul mode.
  • the device 20 is a first base station
  • the receiver 22 is configured to receive the second access information, the second backhaul information, and the second working state information that are sent by the second base station.
  • the transmitter 21 may be configured to send third working state information to the second base station, where the third working state information is used to indicate an access working state and/or a backhaul to be entered by the first base station.
  • Working status is used to indicate an access working state and/or a backhaul to be entered by the first base station.
  • the processor 23 may be configured to configure, by using the first station, the user equipment that accesses the first base station according to the access working state and the backhaul working state that the first base station is to enter. The route of the backhaul is updated.
  • the processor 23 may be configured to configure the user equipment accessing the first base station to be discontinuous through air interface signaling when the access working state to be entered by the first base station is a DTX access mode.
  • the user equipment is switched to access other base stations; when the backhaul working state to be entered by the first base station is the OFF backhaul mode, the backhaul service is switched to the backhaul through other base stations.
  • the processor 23 may be configured to calculate, according to the first access information, the first backhaul information, the first working state information, the second access information, the second backhaul information, and the second working state information. Obtaining the number of transmission time intervals TTI required for the first base station to transmit services, comparing the number of TTIs with a preset sleep duration threshold, and determining an access working state and a backhaul working state to be entered by the first base station.
  • the processor 23 may be configured to use, according to the first access information, the first backhaul information, the first working state information, the second access information, the second backhaul information, and the second working state information, Determining an access working state and a backhaul working state of the second base station to enter.
  • the receiver 22 may be configured to receive the first sending by the first base station.
  • the first access information, the first backhaul information, and the first working state information are received, and the second access information, the second backhaul information, and the second working state information sent by the second base station are received.
  • the controller is located at a serving gateway SGW, a mobility management entity MME, a software defined network SDN controller or a base station.
  • An apparatus for adjusting energy loss of a wireless network system may correspond to a method of adjusting energy loss of a wireless network system according to an embodiment of the present invention, and each unit/module in the apparatus and the above other operations and/or The functions are respectively implemented in order to implement the corresponding processes of the method shown in FIG. 2 to FIG. 10, and are not described herein for brevity.
  • the size of the sequence numbers of the above processes does not mean the order of execution, and the order of execution of each process should be determined by its function and internal logic, and should not be taken to the embodiments of the present invention.
  • the implementation process constitutes any limitation.
  • B corresponding to A means that B is associated with A, and B can be determined according to A.
  • determining B from A does not mean that B is only determined based on A, and that B can also be determined based on A and/or other information.
  • system and “network” are used interchangeably herein. It should be understood that the term “and/or” herein is merely an association relationship describing an associated object, indicating that there may be three relationships, for example, A and/or B, which may indicate that A exists separately, and A and B exist simultaneously. There are three cases of B alone. In addition, the character "/" in this article generally indicates that the contextual object is an "or" relationship.
  • the disclosed systems, devices, and methods may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product.
  • the technical solution of the present invention which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including
  • the instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .

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Abstract

Conformément à des modes de réalisation, la présente invention concerne un procédé et un appareil pour ajuster la perte d'énergie d'un système de réseau sans fil. Le procédé consiste : à acquérir les premières informations d'accès, les premières informations de liaison terrestre et les premières informations d'état de fonctionnement d'une première station de base, et à acquérir les deuxièmes informations d'accès, les deuxièmes informations de liaison terrestre et les deuxièmes informations d'état de fonctionnement d'une deuxième station de base ; selon les premières informations d'accès, les premières informations de liaison terrestre, les premières informations d'état de fonctionnement, les deuxièmes informations d'accès, les deuxièmes informations de liaison terrestre et les deuxièmes informations d'état de fonctionnement, à déterminer un troisième état de fonctionnement d'accès et un troisième état de fonctionnement de liaison terrestre dans lesquels la première station de base doit entrer. Les informations d'accès sont des informations correspondant à un équipement utilisateur accédant à une station de base, les informations de liaison terrestre sont des informations concernant la station de base et une liaison terrestre, et les informations d'état de fonctionnement sont utilisées pour indiquer un état de fonctionnement d'accès en cours et un état de fonctionnement de liaison terrestre de la station de base. Dans les modes de réalisation de la présente invention, un état de fonctionnement dans lequel entrer est déterminé au moyen d'informations d'accès, d'informations de liaison terrestre et d'informations d'état de fonctionnement, de telle sorte que la perte d'énergie d'un système peut être ajustée.。
PCT/CN2015/085532 2015-07-30 2015-07-30 Procédé et appareil pour ajuster la perte d'énergie d'un système de réseau sans fil WO2017015948A1 (fr)

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CN201580081123.5A CN107852619B (zh) 2015-07-30 2015-07-30 调整无线网络系统的能量损耗的方法和装置

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