WO2019095257A1 - 通信方法和通信设备 - Google Patents

通信方法和通信设备 Download PDF

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Publication number
WO2019095257A1
WO2019095257A1 PCT/CN2017/111553 CN2017111553W WO2019095257A1 WO 2019095257 A1 WO2019095257 A1 WO 2019095257A1 CN 2017111553 W CN2017111553 W CN 2017111553W WO 2019095257 A1 WO2019095257 A1 WO 2019095257A1
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Prior art keywords
transmission bandwidth
cell
secondary cell
network device
determining
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PCT/CN2017/111553
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English (en)
French (fr)
Inventor
徐夏刚
杨涛
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上海诺基亚贝尔股份有限公司
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Application filed by 上海诺基亚贝尔股份有限公司 filed Critical 上海诺基亚贝尔股份有限公司
Priority to PCT/CN2017/111553 priority Critical patent/WO2019095257A1/zh
Priority to CN201780096864.XA priority patent/CN111373802B/zh
Publication of WO2019095257A1 publication Critical patent/WO2019095257A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • 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 disclosure generally relate to communication technologies and, more particularly, to communication methods implemented at communication devices and corresponding communication devices.
  • CA Carrier Aggregation
  • the carrier aggregation technology can aggregate multiple component carriers (CCs) to achieve a large (for example, 100 MHz) transmission bandwidth, thereby effectively improving uplink and downlink transmission rates and system capacity.
  • a primary cell PCell
  • SCell secondary cell
  • BWP Bandwidth Part
  • the default BWP configured for the primary or secondary cell is small relative to the configured normal BWP. The difference is that this configuration is mandatory for the primary cell and optional for the secondary cell.
  • the switching of the default BWP and the normal BWP can be performed based on a timer, thereby contributing to power saving. For example, when data transmission is performed on a downlink control channel (PDCCH) for decoding, the timer is started/restarted; if the timer expires, the transmission bandwidth is switched to the default BWP.
  • PDCCH downlink control channel
  • scenario 1 no data transmission or only small data transmission, so there is no need to continue to perform broadband radio frequency reception/transmission to save power
  • scenario 2 There is data to be transmitted, but the network side hopes to Traffic is offloaded to the secondary cell instead of the primary cell.
  • embodiments of the present disclosure propose a communication method implemented at a communication device and a corresponding communication device capable of adjusting a configuration of a secondary cell based on a transmission bandwidth handover of a primary cell, thereby enabling both data transmission requirements and implementation energy saving effect.
  • an embodiment of the present disclosure provides a communication method implemented at a network device.
  • the method includes: determining, in response to a handover of a transmission bandwidth of a primary cell of a network device, a configuration of an operation state of a secondary cell for a network device, where a transmission bandwidth of the primary cell is a bandwidth used by the primary cell to communicate with the terminal device;
  • the terminal device transmits the configuration to cause the terminal device to determine an operational status of the secondary cell based on the configuration.
  • an embodiment of the present disclosure further provides a network device for performing communication, including: a controller configured to determine a secondary cell for a network device in response to a handover of a transmission bandwidth of a primary cell of the network device
  • the configuration of the operational state, the transmission bandwidth of the primary cell is the bandwidth used by the primary cell to communicate with the terminal device; and the transceiver configured to send the configuration to the terminal device to enable the terminal device to determine the operation of the secondary cell based on the configuration status.
  • Embodiments of the present disclosure also include a network device for communication.
  • the network device includes a processor and a memory storing instructions that, when executed by the processor, cause the network device to perform the method according to the first aspect.
  • Embodiments of the present disclosure also include a network device for communicating.
  • the network device includes: means for determining a configuration of an operation state of a secondary cell of the network device in response to handover of a transmission bandwidth of a primary cell of the network device, the transmission bandwidth of the primary cell is a primary a bandwidth used by the cell to communicate with the terminal device; and means for transmitting the configuration to the terminal device to cause the terminal device to determine an operational state of the secondary cell based on the configuration.
  • an embodiment of the present disclosure provides a communication method implemented at a terminal device.
  • the method includes: receiving, from a network device, a configuration of an operation status of a slave cell of a network device, the configuration being determined by the network device in response to a handover of a transmission bandwidth of a primary cell of the network device, where a transmission bandwidth of the primary cell is a primary cell and The bandwidth used by the terminal device for communication; and determining the operational status of the secondary cell based on the configuration.
  • inventions of the present disclosure also provide a terminal device for communication.
  • the terminal device includes: a transceiver configured to receive, from the network device, a configuration of an operation status of a slave cell of the network device, the configuration being determined by the network device in response to a handover of a transmission bandwidth of a primary cell of the network device, the primary cell
  • the transmission bandwidth is the bandwidth used by the primary cell to communicate with the terminal device; and the controller is configured to determine the operational status of the secondary cell based on the configuration.
  • Embodiments of the present disclosure also include a terminal device for communication.
  • the terminal device includes a processor and a memory storing instructions that, when executed by the processor, cause the terminal device to perform the method according to the second aspect.
  • Embodiments of the present disclosure also include a terminal device for communication.
  • the terminal device includes: means for receiving, from the network device, a configuration of an operating state of a slave cell of the network device, the configuration being determined by the network device in response to a handover of a transmission bandwidth of a primary cell of the network device, the transmission of the primary cell
  • the bandwidth is the bandwidth used by the primary cell to communicate with the terminal device; and means for determining the operational status of the secondary cell based on the configuration.
  • FIG. 1 illustrates an example communication network in which embodiments of the present disclosure may be implemented
  • FIG. 2 illustrates a flow diagram of a method implemented on a network device side, in accordance with certain embodiments of the present disclosure
  • FIG. 3 illustrates a flow diagram of a method implemented on a network device side, in accordance with certain embodiments of the present disclosure
  • FIG. 4 illustrates a flow diagram of a method implemented on a network device side, in accordance with certain embodiments of the present disclosure
  • FIG. 5 illustrates a flow diagram of a method implemented on a terminal device side, in accordance with certain embodiments of the present disclosure
  • FIG. 6 shows a block diagram of a device in accordance with some embodiments of the present disclosure.
  • network device refers to other entities or nodes having specific functions in a base station or a communication network.
  • a “base station” may represent a Node B (NodeB or NB), an evolved Node B (eNodeB or eNB), a gNB, a Remote Radio Unit (RRU), a Radio Head (RH), a Remote Radio Head (RRH), a relay , or a low power node such as a pico base station, a femto base station, or the like.
  • NodeB Node B
  • eNodeB or eNB evolved Node B
  • gNB a Remote Radio Unit
  • RRU Radio Head
  • RH Remote Radio Head
  • RRH Remote Radio Head
  • relay or a low power node such as a pico base station, a femto base station, or the like.
  • the terms “network device” and “base station” are used interchangeably for purposes of discussion and may be primarily eNBs as an example of a network device
  • terminal device refers to any terminal device capable of wireless communication with or between base stations.
  • the terminal device may include a User Equipment (UE), a Terminal Equipment (MT), a Subscriber Station (SS), a Portable Subscriber Station (PSS), a Mobile Station (MS), or an Access Terminal (AT), and the above-described equipment on the vehicle.
  • UE User Equipment
  • MT Terminal Equipment
  • PSS Portable Subscriber Station
  • MS Mobile Station
  • AT Access Terminal
  • transmission bandwidth refers to the portion of the bandwidth that the receiver actually detects on the radio frequency, such as BWP.
  • the term "primary cell timer” as used herein is also referred to as "the transmission bandwidth timer of the primary cell” for controlling the handover between the normal BWP and the default BWP pre-configured for the primary cell.
  • a default BWP and one or more normal BWPs may be pre-configured, where the default BWP may be a smaller bandwidth, and the normal BWP may be used by the primary cell to work normally. bandwidth.
  • the normal BWP can be a larger bandwidth than the default BWP, but can also be less than or equal to the default BWP.
  • a default BWP and one or more normal BWPs may also be pre-configured, wherein the relationship between the default BWP and the normal BWP is similar to the above manner.
  • the transmission bandwidth of the primary cell eg, the BWP currently used by the primary cell
  • the transmission bandwidth of the primary cell is switched to the default BWP pre-configured for the primary cell.
  • slave cell timer as used herein is also referred to as "slave bandwidth timer of a secondary cell” for controlling handover between a normal BWP and a default BWP pre-configured for a secondary cell. Specifically, when the transmission bandwidth timer of the secondary cell expires (or times out), the transmission bandwidth of the secondary cell (eg, the BWP currently used by the cell) is switched to the default BWP for the secondary cell.
  • deactivation timer from a cell is used to control the activation state and/or deactivation state of a secondary cell. Specifically, when the deactivation timer of the slave cell expires or is stopped, the cell is switched to the deactivation state. It should be understood that a slave cell is in a state of "deactivation (also referred to as “deactivation” or “deactivation”) indicating that the slave cell is not activated, ie, is not active.
  • the transmission bandwidth timer of the primary cell and the transmission bandwidth timer of the secondary cell are independent. Even if the transmission bandwidth timer of the primary cell expires for energy saving purposes, the secondary cell may still be in operation and may operate with a larger BWP, which does not meet the power saving requirements.
  • embodiments of the present disclosure provide a communication method.
  • the network device determines a configuration for an operation state of the slave cell thereof in response to the handover of the transmission bandwidth of its primary cell, and transmits the configuration to the terminal device.
  • the terminal device determines the operational status of the secondary cell based on the received configuration.
  • the network device can configure the behavior of the secondary cell according to the handover of the transmission bandwidth of the primary cell, and notify the terminal device of such configuration. In this way, the energy saving effect can be improved while meeting the data transmission requirements, thereby improving system performance.
  • FIG. 1 illustrates an example communication network 100 in which embodiments of the present disclosure may be implemented.
  • Communication network 100 includes network device 110 and terminal device 120 in communication therewith.
  • the network device 110 of FIG. 1 has a primary cell 101 and a secondary cell 102. It should be understood that this is merely illustrative, and that network device 110 may have multiple secondary cells in embodiments in accordance with the present disclosure.
  • terminal device 120 communicates with primary cell 101 on the primary CC and optionally with secondary cell 102 from the secondary CC.
  • communications in communication network 100 may be implemented in accordance with any suitable communication protocol, including, but not limited to, first generation (1G), second generation (2G), third generation (3G), Cellular communication protocols such as fourth generation (4G) and fifth generation (5G), wireless local area network communication protocols such as Institute of Electrical and Electronics Engineers (IEEE) 802.11, and/or any other protocols currently known or later developed.
  • the communication uses any suitable wireless communication technology including, but not limited to, Code Division Multiple Access (CDMA), Frequency Division Multiple Access (FDMA), Time Division Multiple Access (TDMA), Frequency Division Duplex (FDD), Time Division Duplex. (TDD), Multiple Input Multiple Output (MIMO), Orthogonal Frequency Division Multiple Access (OFDM), and/or any other technology currently known or developed in the future.
  • CDMA Code Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • TDMA Time Division Multiple Access
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • TDD Time Division Duplex
  • MIMO Multiple Input Multiple Out
  • Communication network 100 can include any suitable type and number of network devices and cells, each network device An appropriate range and an appropriate number of coverages may be provided, and the communication network 100 may also include any suitable type and number of terminal devices.
  • FIG. 2 shows a flowchart of a method 200 implemented on a terminal device side, in accordance with certain embodiments of the present disclosure. It will be appreciated that the method 200 can be implemented, for example, at the network device 110 as shown in FIG.
  • the method 200 begins at block 210, where the network device 110 determines a configuration for an operational state of the secondary device 102 of the network device 110 in response to a handover of its primary cell 101 transmission bandwidth.
  • the transmission bandwidth of the primary cell 101 is the bandwidth used by the primary cell 101 to communicate with the terminal device 120.
  • the handover of the transmission bandwidth of the primary cell 101 may be that the transmission bandwidth of the primary cell is switched to the default transmission bandwidth pre-configured for the primary cell, eg, the BWP used by the primary cell 101 switches to its default BWP. Additionally or alternatively, in some embodiments, the handover may also be a transmission bandwidth switching of the primary cell to a normal transmission bandwidth pre-configured for the primary cell, eg, the primary cell 101 switches from its default BWP to its normal BWP.
  • the transmission bandwidth of the primary cell 101 may be determined by various means (eg, occurrence of a predefined event). For example, if the transmission bandwidth timer of the primary cell 101 expires, it may be determined that the transmission bandwidth of the primary cell 101 is switched to the default transmission bandwidth pre-configured for the primary cell. Additionally or alternatively, if the load of the primary cell 101 exceeds a threshold load, for example, a large amount of data needs to be transmitted or a larger number of terminal devices are served, it may be determined that the transmission bandwidth of the primary cell 101 is switched to the normal transmission bandwidth pre-configured for the primary cell 101. .
  • a threshold load for example, a large amount of data needs to be transmitted or a larger number of terminal devices are served
  • the switching of the transmission bandwidth of the primary cell 101 may trigger multiple operational states of the secondary cell 102.
  • These operational states are for example but not limited to: an active state; a deactivated state; an active state and a transmission bandwidth is switched to a default transmission bandwidth; an activation state and a transmission bandwidth is switched to a normal transmission bandwidth pre-configured for the secondary cell;
  • the primary cell 101 when the transmission bandwidth timer of the primary cell 101 times out or expires for power saving purposes, the primary cell 101 will switch to the default BWP.
  • the transmission bandwidth timer from cell 102 and the corresponding default BWP are optional.
  • the secondary cell 102 may have two timers: a transmission bandwidth timer from the cell 102 for controlling handover between the normal wideband BWP and the narrowband BWP; and a deactivation timer from the cell 102 for controlling the secondary cell 102. Activate/deactivate status.
  • state 1 the slave cell 102 is in a normal working state, which is deactivated. Both the timer and the transmission bandwidth timer are in operation; state 2: the slave cell operates in the default BWP mode, the deactivation timer from the cell 102 is still running, the transmission bandwidth timer from the cell 102 has expired; 3: From cell 102 is inactive, no timer is running.
  • FIG. 3 illustrates a flow diagram of a method 300 of determining a configuration of an operational state of a secondary cell, in accordance with certain embodiments of the present disclosure. It should be understood that the embodiment illustrated in FIG. 3 is one implementation of block 210 illustrated in FIG. 2, which is merely exemplary and not limiting. The embodiment of FIG. 3 may be performed, for example, by network device 110 shown in FIG.
  • the transmission bandwidth of the primary cell 101 is handed over to the default transmission bandwidth pre-configured for the primary cell 101.
  • information associated with the transmission bandwidth of the secondary cell 102 is determined.
  • the transmission bandwidth of the cell 102 is switched to the default transmission bandwidth pre-configured for the secondary cell 102.
  • the slave cell 102 is set to deactivate. status.
  • the network device 110 may also respond to determining that the transmission bandwidth of the primary cell 102 is switched to a default transmission bandwidth pre-configured for the primary cell 101.
  • the slave cell 102 is set to a deactivated state. In these embodiments, the deactivation timer from cell 102 can be stopped.
  • FIG. 4 illustrates a flow diagram of a method 400 of determining a configuration of an operational state of a secondary cell, in accordance with certain embodiments of the present disclosure. It should be understood that the embodiment illustrated in FIG. 4 is one implementation of block 210 illustrated in FIG. 2, which is merely exemplary and not limiting. The embodiment of Figure 4 can be performed, for example, by network device 110 shown in Figure 1.
  • the slave cell 102 in response to determining that the transmission bandwidth of the primary cell 101 is handed over to the normal transmission bandwidth pre-configured for the primary cell 101, it is determined whether the secondary cell 102 is in a deactivated state.
  • the slave cell 102 is activated in response to determining that the slave cell 102 is in a deactivated state.
  • the slave cell 102 can be in an active state.
  • the transmission bandwidth of the slave cell 102 in response to determining that the slave cell 102 is in an active state, it is determined whether the transmission bandwidth of the slave cell 102 is a default transmission bandwidth pre-configured for the slave cell 102.
  • the transmission bandwidth of the cell 102 in response to determining that the transmission bandwidth from the cell 102 is a default transmission bandwidth pre-configured for the secondary cell 102, the transmission bandwidth of the cell 102 is switched to the normal transmission bandwidth pre-configured for the secondary cell 102.
  • network device 110 transmits the determined configuration to terminal device 120 to cause terminal device 120 to determine an operational status of the secondary cell 102 based on the configuration.
  • Network device 110 may utilize higher layer signaling, such as Radio Resource Control (RRC) signaling, or may use L1 layer signaling, such as Downlink Control (PDCCH), to transmit the configuration determined at block 210.
  • RRC Radio Resource Control
  • PDCCH Downlink Control
  • network device 110 may transmit radio resource control signaling or downlink control signaling including the configuration to terminal device 120.
  • network device 110 employs high layer signaling. For example, when the network device 110 configures the secondary cell 102 through the RRC procedure, when the transmission bandwidth timer of the primary cell 101 expires, the network device 110 may send the configuration to the terminal device 120 in the RRC signaling to guide the slave device. UE behavior on cell 102.
  • network device 110 may transmit the configuration using L1 signaling. This may be particularly advantageous for situations where the primary cell 101 is working At a normal BWP, network device 110 may need to immediately switch traffic to slave cell 102.
  • network device 110 may transmit downlink control information (DCI) such that the transmission bandwidth of primary cell 101 may switch to its default BWP before its transmission bandwidth timer expires.
  • DCI downlink control information
  • network device 110 may include an indication in the DCI to ensure that at least one of the secondary cells is functioning properly.
  • the terminal device 120 may extract a configuration of the operational status of the secondary cell 102 from the signaling, and determine an operational status of the secondary cell 102 based on the configuration.
  • the behavior of the slave cell 102 is configured by the network device 110 according to the handover of the transmission bandwidth of the primary cell 101, and the terminal device 120 is notified of such a configuration, and the power saving effect can be improved while improving the system performance while satisfying the data transmission requirement.
  • FIG. 5 illustrates a flow diagram of a method 500 implemented on a terminal device side, in accordance with certain embodiments of the present disclosure. It will be appreciated that method 500 can be implemented, for example, at terminal device 120 as shown in FIG.
  • the method 500 begins at block 510, where the terminal device 120 receives a configuration for the operating state of the slave cell 102 of the network device 110 from the network device.
  • the configuration is determined by the network device 110 in response to the switching of the transmission bandwidth of the primary cell 101 of the network device 110, such as in accordance with the embodiments discussed above with respect to Figures 2-4.
  • the transmission bandwidth of the primary cell 101 is the bandwidth used by the primary cell 101 to communicate with the terminal device 120.
  • the terminal device 120 may receive the above configuration from radio resource control signaling or downlink control signaling. It should be understood that this is merely exemplary and not limiting, and that other suitable manners for transmitting the configuration for the operating state of the secondary cell 102 from the network device 110 to the terminal device 120 may also be employed within the scope of embodiments of the present disclosure.
  • the terminal device 120 determines an operational status of the secondary cell 102 based on the configuration. According to an embodiment of the present disclosure, based on the received configuration, the terminal device 120 may determine that the secondary cell 102 is set to an active state; determine that the secondary cell 102 is set to a deactivated state; and determine that the secondary cell 102 is An activation state, and the transmission bandwidth of the secondary cell 102 is switched to a default transmission bandwidth pre-configured for the secondary cell 102; determining that the secondary cell 102 is in an active state, and the transmission bandwidth of the secondary 102 zone Switched to the normal transmission bandwidth pre-configured for the secondary cell 102; and/or other states from the cell 102.
  • the terminal device 120 can understand the operational status of the secondary cell 102 caused by the change in behavior of the primary cell 101, so that data transmission with the primary cell and the secondary cell can be achieved by a variety of different options. Such data transmission can improve energy efficiency while meeting transmission requirements, thereby effectively improving system performance.
  • the switching between the default BWP and the normal BWP of the transmission bandwidth (eg, BWP) of the primary cell has the following three potential application scenarios.
  • Scenario 1 No data transmission or only small data transmission. At this time, only the default BWP of the primary cell can meet the transmission requirements.
  • Scenario 2 There is a large amount of data to be transmitted, but in some cases (for example, when the primary cell is overloaded), network devices (such as gNBs) want to offload these traffic loads to the secondary cell instead of just using the primary cell.
  • network devices such as gNBs
  • Scenario 3 There is a large amount of data to be transmitted, and the primary cell switches to its normal BWP to complete such data transmission.
  • scenario 1 when the default BWP of the primary cell can meet the data transmission requirements, there is no need to perform data transmission from the cell, otherwise power will be wasted and the normal BWP of the secondary cell will not be optimally maintained. That is to say, for scenario 1, moving from the cell to the narrowband default BWP, or deactivating the secondary cell, more power can be saved.
  • a primary cell timer expiration event may be caused to automatically initiate (restart) a timer of the secondary cell, which advantageously avoids causing additional signaling overhead.
  • the gNB can trigger the BWP of the primary cell to switch to its normal BWP.
  • the slave cell will also be active so that data can be transferred immediately. That is to say, the primary cell switching to the normal BWP can automatically activate the secondary cell.
  • the network device can identify and distinguish the above three scenarios, and determine the behavior of the terminal device (eg, UE) for different configurations of the secondary cell, thereby achieving a trade-off between power saving and data transmission. At the same time, it can save DL signaling.
  • embodiments of the present disclosure may send an indication from the gNB to the UE to direct how the UE behavior associates from the cell activation/deactivation/BWP handover with the BWP handover of the primary cell.
  • the transmission bandwidth timer (hereinafter referred to as "primary cell timer”) expiration event of the primary cell may stop the transmission bandwidth timer of the primary cell (hereinafter referred to as " From the cell timer").
  • the gNB indicates that the UE has no transmission requirements on the secondary cell, and the following two types of behaviors can be utilized to save more UE power:
  • Type 1 If the secondary cell works in its normal BWP and the default BWP of the secondary cell and the secondary cell is configured, the BWP handover event of the primary cell will automatically stop the secondary cell timer and switch the secondary cell to the corresponding default. BWP (usually a narrower bandwidth). In this way, the UE can be guaranteed to work with a narrower bandwidth from the cell, thereby saving power.
  • BWP usually a narrower bandwidth
  • Type 2 If the slave cell is already working in its default BWP and does not need to use such a default BWP for transmission, then this slave cell can be deactivated. That is, in this case, if the primary cell switches to the default BWP of the primary cell, the deactivation timer of the secondary cell will be directly stopped.
  • the primary cell timer expiration event may stop deactivating the timer from the cell.
  • the above embodiments are valid for scenario 1 (no transmission or only small data transmission).
  • the default BWP ie, the default BWP of the primary cell
  • pre-configured for the primary cell can satisfy the data transmission requirement without other secondary cells.
  • the BWP of the primary cell switches from the default BWP to its normal BWP, then the secondary BWP can be activated from the cell and/or triggering the secondary cell handover to the secondary cell.
  • the embodiment corresponding to option 3 is applicable to a scenario in which the primary cell switches back to its normal BWP by scheduling DCI, for example, where there is a large amount of data to be transmitted and/or a case where traffic needs to be transferred to the secondary cell. For these cases, since a large amount of data is waiting for transmission, it is necessary to satisfy the data transmission requirements from the cell. However, if no secondary cell is in a normal active state, additional DL signaling can be sent directly to activate at least one secondary cell. Embodiments of the present disclosure effectively avoid such additional DL signaling. In particular, embodiments of the present disclosure automatically activate at least one secondary cell, such as by scheduling DCI, such that the primary cell switches to the normal BWP pre-configured by the primary cell.
  • the gNB when the gNB switches the primary cell to the normal BWP pre-configured for the primary cell (ie, the normal BWP of the primary cell), it can ensure that at least one secondary cell works normally and takes over the data transmission task. .
  • FIG. 6 shows a block diagram of an apparatus 600 suitable for implementing embodiments of the present disclosure.
  • Device 600 can be used to implement a network device or terminal device, such as network device 110 and terminal device 120 shown in FIG.
  • device 600 includes a controller 610.
  • Controller 610 controls the operation and functionality of device 600.
  • controller 610 can perform various operations with instructions 630 stored in memory 620 coupled thereto.
  • Memory 620 can be of any suitable type suitable for use in a local technical environment and can be implemented using any suitable data storage technology, including but not limited to semiconductor based memory devices, magnetic Storage devices and systems, optical storage devices and systems. Although only one memory unit is shown in FIG. 6, there may be multiple physically different memory units in device 600.
  • Controller 610 can be of any suitable type suitable for use in a local technology environment and can include, but is not limited to, general purpose computers, special purpose computers, microcontrollers, digital signal controllers (DSPs), and controller-based multi-core controller architectures. One or more multiple.
  • Device 600 can also include a plurality of controllers 610. Controller 610 is coupled to transceiver 640, which can receive and transmit information by means of one or more antennas 650 and/or other components.
  • controller 610 and transceiver 640 can operate in conjunction to implement method 200 described above with respect to FIG.
  • the controller 610 is configured to determine, according to a handover of a transmission bandwidth of a primary cell of the network device, a configuration of an operation state of the secondary cell for the network device, where the transmission bandwidth of the primary cell is used by the primary cell to communicate with the terminal device. Bandwidth.
  • the transceiver 640 is configured to transmit the configuration to the terminal device such that the terminal device determines an operational status of the secondary cell based on the configuration.
  • the controller 610 can be further configured to: determine, in response to determining that the transmission bandwidth of the primary cell is switched to a default transmission bandwidth pre-configured for the primary cell, information associated with the transmission bandwidth of the secondary cell; The transmission bandwidth of the cell is for the normal transmission bandwidth pre-configured from the cell, the transmission bandwidth of the cell is switched to the default transmission bandwidth pre-configured for the secondary cell; and the transmission of the secondary cell is not configured in response to the default transmission bandwidth of the secondary cell.
  • the bandwidth timer is also unconfigured and the deactivation timer from the cell has not expired, setting the slave cell to the deactivated state.
  • the controller 610 can be further configured to: set the slave cell to a deactivated state in response to determining that the primary cell's transmission bandwidth is switched to a default transmission bandwidth pre-configured for the primary cell.
  • the controller 610 can be further configured to: stop the deactivation timer from the cell.
  • the controller 610 can be further configured to: determine whether the secondary cell is in a deactivated state, in response to determining that the primary cell's transmission bandwidth is switched to a normal transmission bandwidth pre-configured for the primary cell; in response to determining the secondary cell Deactivated Activating the secondary cell; determining whether the secondary cell's transmission bandwidth is a default transmission bandwidth pre-configured for the secondary cell in response to determining that the secondary cell is in an active state; and determining a default transmission bandwidth for the secondary cell in response to determining the secondary network's transmission bandwidth Switching from the transmission bandwidth of the cell to the normal transmission bandwidth pre-configured for the secondary cell.
  • the transceiver 640 can be further configured to: transmit the radio resource control signaling or the downlink control signaling including the configuration to the terminal device.
  • the controller 610 can be further configured to: determine that the transmission bandwidth of the primary cell switches to a default transmission bandwidth pre-configured for the primary cell in response to the transmission bandwidth timer of the primary cell expires; and in response to the primary The load of the cell exceeds the threshold load, and it is determined that the transmission bandwidth of the primary cell is switched to the normal transmission bandwidth pre-configured for the primary cell.
  • controller 610 and transceiver 640 can operate in conjunction to implement method 500 described above with respect to FIG.
  • the transceiver 640 is configured to receive, from the network device, a configuration of an operation status of the slave cell of the network device, where the configuration is determined by the network device in response to the handover of the transmission bandwidth of the primary cell of the network device, and the transmission of the primary cell
  • the bandwidth is the bandwidth used by the primary cell to communicate with the terminal device
  • the controller 610 is configured to determine the operational status of the secondary cell based on the configuration.
  • the transceiver 640 can be further configured to receive the configuration from radio resource control signaling or downlink control signaling.
  • the controller 610 can be further configured to perform at least one of: determining that the slave cell is set to an active state; determining that the slave cell is set to a deactivated state; determining that the slave cell is in an active state, and from the cell The transmission bandwidth is switched to the default transmission bandwidth pre-configured for the secondary cell; and it is determined that the secondary cell is in an active state, and the transmission bandwidth of the secondary cell is switched to the normal transmission bandwidth for the secondary cell.
  • the various example embodiments of the present disclosure can be implemented in hardware or special purpose circuits, software, logic, or any combination thereof. Some aspects may be implemented in hardware, while other aspects may be implemented in firmware or software which can be executed by a controller, microprocessor or other computing device. Aspects of embodiments of the present disclosure are illustrated or described as block diagrams, processes The figures, devices, systems, techniques, or methods described herein may be understood as non-limiting examples in hardware, software, firmware, special purpose circuits or logic, general purpose hardware or controllers, or in some other graphical representations. Or implemented in other computing devices, or some combination thereof.
  • embodiments of the present disclosure may be described in the context of machine-executable instructions, such as in a program module that is executed in a device on a real or virtual processor of a target.
  • program modules include routines, programs, libraries, objects, classes, components, data structures, and the like that perform particular tasks or implement particular abstract data structures.
  • the functionality of the program modules may be combined or divided between the described program modules.
  • Machine-executable instructions for program modules can be executed within a local or distributed device. In a distributed device, program modules can be located in both local and remote storage media.
  • Computer program code for implementing the methods of the present disclosure can be written in one or more programming languages.
  • the computer program code can be provided to a general purpose computer, a special purpose computer or a processor of other programmable data processing apparatus such that the program code, when executed by a computer or other programmable data processing apparatus, causes a flowchart and/or block diagram.
  • the functions/operations specified in are implemented.
  • the program code can execute entirely on the computer, partly on the computer, as a stand-alone software package, partly on the computer and partly on the remote computer or entirely on the remote computer or server.
  • a machine-readable medium can be any tangible medium that contains or stores a program for or relating to an instruction execution system, apparatus, or device.
  • the machine readable medium can be a machine readable signal medium or a machine readable storage medium.
  • a machine-readable medium can include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination thereof. More detailed examples of machine readable storage media include electrical connections with one or more wires, portable computer disks, hard disks, random access memory (RAM), read only memory (ROM), erasable programmable read only Memory (EPROM or flash memory), optical storage device, magnetic storage device, or any suitable combination thereof.

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Abstract

本公开的实施例涉及通信方法以及通信设备。提供一种在网络设备处实施的通信方法，包括：响应于网络设备的主小区的传输带宽的切换，确定针对网络设备的从小区的操作状态的配置，主小区的传输带宽是主小区与终端设备进行通信所使用的带宽；以及向终端设备发送该配置，以使得终端设备基于该配置来确定从小区的操作状态。还提供了一种在终端设备处实施的通信方法以及相应的终端设备和网络设备。

Description

通信方法和通信设备 技术领域
本公开的实施例总体上涉及通信技术，更具体地，涉及在通信设备处实施的通信方法以及相应的通信设备。
背景技术
为了满足传输速率和系统容量提升的要求，已有的通信技术引入了载波聚合(Carrier Aggregation，CA)，来增加系统传输带宽。载波聚合技术可以将多个成员载波(Component Carrier，CC)聚合在一起，实现较大(例如100MHz)的传输带宽，从而有效提高了上下行传输速率和系统容量。一般而言，主小区(PCell)是工作在主CC上的小区，而从小区(SCell)是工作在从CC上的小区。如果没有配置载波聚合，则只有一个服务小区，即主小区；如果配置了载波聚合，则服务小区包括主小区和从小区。
根据目前的通信技术，对于主小区或从小区的传输带宽，已经提出了带宽部分(Bandwidth Part，BWP)概念。一般而言，BWP不同于一个小区的总带宽，而是指示该小区的总带宽的一部分，该部分是接收方在射频上真正检测的带宽部分。
通常，对主小区或从小区配置的默认BWP相对于配置的正常BWP而言较小。不同的是，这种配置对于主小区是强制性的，而对于从小区是可选的。此外，默认BWP与正常BWP的切换可以基于定时器来进行，从而有利于节省功耗。例如，当对下行链路控制信道(PDCCH)解码来进行数据传输时，该定时器启动/重新启动；如果该定时器到期，则传输带宽切换到默认BWP。
这种定时器触发的向默认BWP的切换的主要目的是为了节省功耗。就主小区定时器到期而言，主要有如下两种潜在场景：场景1：无数据传输或仅有小数据传输，因此无需继续进行宽带射频接收/发送，以便能够节省功耗；以及场景2：有数据要传输，但是网络侧希望将 流量卸载到从小区而不是主小区。
对于网络侧而言，为了能够节省功耗又满足数据传输要求，需要识别和区分这些不同场景，并对从小区的配置做出相应决策，从而指导终端设备的行为。然而，目前主小区定时器和从小区定时器操作是完全独立的。即使主小区定时器出于节能目的而到期，从小区可能仍然处于工作状态并且有可能工作在较大带宽的情况下，这无法实现节省功耗的效果。
发明内容
总体上，本公开的实施例提出在通信设备处实施的通信方法以及相应的通信设备，其能够基于主小区的传输带宽切换来调整对从小区的配置，从而既能够满足数据传输要求又能够实现节能效果。
在第一方面，本公开的实施例提供一种在网络设备处实施的通信方法。该方法包括：响应于网络设备的主小区的传输带宽的切换，确定针对网络设备的从小区的操作状态的配置，主小区的传输带宽是主小区与终端设备进行通信所使用的带宽；以及向终端设备发送该配置，以使得终端设备基于该配置来确定从小区的操作状态。
在此方面，本公开的实施例还提供一种用于进行通信的网络设备，包括：控制器，被配置为响应于网络设备的主小区的传输带宽的切换，确定针对网络设备的从小区的操作状态的配置，主小区的传输带宽是主小区与终端设备进行通信所使用的带宽；以及收发器，被配置为向终端设备发送该配置，以使得终端设备基于该配置来确定从小区的操作状态。
本公开的实施例还包括一种用于通信的网络设备。该网络设备包括：处理器以及存储有指令的存储器，指令在被处理器运行时使得该网络设备执行根据第一方面的方法。
本公开的实施例还包括一种用于进行通信的网络设备。该网络设备包括：用于响应于网络设备的主小区的传输带宽的切换，确定针对网络设备的从小区的操作状态的配置的装置，主小区的传输带宽是主 小区与终端设备进行通信所使用的带宽；以及用于向终端设备发送该配置，以使得终端设备基于该配置来确定从小区的操作状态的装置。
在第二方面，本公开的实施例提供一种在终端设备处实施的通信方法。该方法包括：从网络设备接收针对网络设备的从小区的操作状态的配置，该配置是网络设备响应于网络设备的主小区的传输带宽的切换而确定的，主小区的传输带宽是主小区与终端设备进行通信所使用的带宽；以及基于该配置来确定从小区的操作状态。
在此方面，本公开的实施例还提供一种用于通信的终端设备。该终端设备包括：收发器，被配置为从网络设备接收针对网络设备的从小区的操作状态的配置，该配置是网络设备响应于网络设备的主小区的传输带宽的切换而确定的，主小区的传输带宽是主小区与终端设备进行通信所使用的带宽；以及控制器，被配置为基于该配置来确定从小区的操作状态。
本公开的实施例还包括一种用于通信的终端设备。该终端设备包括：处理器以及存储有指令的存储器，该指令在被处理器运行时使得该终端设备执行根据第二方面的方法。
本公开的实施例还包括一种用于通信的终端设备。该终端设备包括：用于从网络设备接收针对网络设备的从小区的操作状态的配置的装置，该配置是网络设备响应于网络设备的主小区的传输带宽的切换而确定的，主小区的传输带宽是主小区与终端设备进行通信所使用的带宽；以及用于基于该配置来确定从小区的操作状态的装置。
应当理解，发明内容部分中所描述的内容并非旨在限定本公开实施例的关键或重要特征，亦非用于限制本公开的范围。本公开的其它特征将通过以下的描述变得容易理解。
附图说明
结合附图并参考以下详细说明，本公开各实施例的上述和其他特征、优点及方面将变得更加明显。在附图中，相同或相似的附图标记表示相同或相似的元素，其中：
图1示出了本公开的实施例可以在其中实施的示例通信网络；
图2示出了根据本公开的某些实施例的在网络设备侧实施的方法的流程图；
图3示出了根据本公开的某些实施例的在网络设备侧实施的方法的流程图；
图4示出了根据本公开的某些实施例的在网络设备侧实施的方法的流程图；
图5示出了根据本公开的某些实施例的在终端设备侧实施的方法的流程图；以及
图6示出了根据本公开的某些实施例的设备的框图。
具体实施方式
下面将参照附图更详细地描述本公开的实施例。虽然附图中显示了本公开的某些实施例，然而应当理解的是，本公开可以通过各种形式来实现，而且不应该被解释为限于这里阐述的实施例，相反提供这些实施例是为了更加透彻和完整地理解本公开。应当理解的是，本公开的附图及实施例仅用于示例性作用，并非用于限制本公开的保护范围。
根据本公开的实施例，“网络设备”是指在基站或者通信网络中具有特定功能的其他实体或节点。“基站”(BS)可以表示节点B(NodeB或者NB)、演进节点B(eNodeB或者eNB)、gNB、远程无线电单元(RRU)、射频头(RH)、远程无线电头端(RRH)、中继器、或者诸如微微基站、毫微微基站等的低功率节点等等。在本公开的上下文中，为讨论方便之目的，术语“网络设备”和“基站”可以互换使用，并且可能主要以eNB作为网络设备的示例。
在此使用的术语“终端设备”是指能够与基站之间或者彼此之间进行无线通信的任何终端设备。作为示例，终端设备可以包括用户设备(UE)、终端设备(MT)、订户台(SS)、便携式订户台(PSS)、移动台(MS)或者接入终端(AT)，以及车载的上述设备。在本公开 的上下文中，为讨论方便之目的，术语“终端设备”和“UE”可以互换使用。
在此使用的术语“传输带宽”是指接收方在射频上真正检测的带宽部分，例如BWP。在此使用的术语“主小区定时器”也称为“主小区的传输带宽定时器”，用于控制针对主小区预配置的正常BWP和默认BWP之间的切换。在本公开的实施例中，对于主小区而言，可以预先配置一个默认BWP以及一个或多个正常BWP，其中默认BWP可以是一个较小的带宽，正常BWP可以是主小区正常工作所使用的带宽。相对于默认BWP而言，正常BWP可以是一个较大的带宽，但也可以小于或等于默认BWP。此外，对于从小区而言，也可以预先配置一个默认BWP以及一个或多个正常BWP，其中默认BWP与正常BWP的关系类似于上述方式。
具体而言，当主小区的传输带宽定时器到期(或超时)时，则主小区的传输带宽(例如，主小区当前使用的BWP)切换到针对主小区预配置的默认BWP。
在此使用的术语“从小区定时器”也称为“从小区的传输带宽定时器”，用于控制针对从小区预配置的正常BWP和默认BWP之间的切换。具体而言，当从小区的传输带宽定时器到期(或超时)时，则从小区的传输带宽(例如，从小区当前使用的BWP)切换到针对从小区预配置的默认BWP。
在此使用的术语“从小区的去激活计时器”用于控制从小区的激活状态和/或去激活状态。具体而言，当从小区的去激活计时器到期或被停止时，则从小区切换成去激活(deactivation)状态。应当理解，一个从小区处于“去激活(也称为“解除激活”或“解激活”)”状态表明该从小区没有被激活，即未处于激活状态。
在此使用的术语“包括”或“包含”及其变形是开放性包括，即“包括但不限于”。术语“基于”是“至少部分地基于”。术语“一个实施例”表示“至少一个实施例”；术语“另一实施例”表示“至少一个另外的实施例”。其他术语的相关定义将在下文描述中给出。
如上所述，在已有的技术方案中，主小区的传输带宽定时器和从小区的传输带宽定时器是独立的。即使主小区的传输带宽定时器出于节能目的而到期，从小区可能仍然处于工作状态并且有可能以较大的BWP进行工作，这无法满足节省功耗的要求。
为了解决这些以及其它潜在问题，本公开的实施例提供了一种通信方法。根据本公开的实施例的方法，网络设备响应于其主小区的传输带宽的切换，确定针对其从小区的操作状态的配置，并且向终端设备发送该配置。然后，终端设备基于接收的配置来确定从小区的操作状态。通过这种方式，网络设备可以根据主小区的传输带宽的切换来配置从小区的行为，并且将这种配置通知终端设备。这样，可以在满足数据传输要求的同时，改善节能效果，从而改善系统性能。
图1示出了本公开的实施例可以在其中实施的示例通信网络100。通信网络100包括网络设备110以及与之通信的终端设备120。仅作为示例，图1的网络设备110具有主小区101和一个从小区102。应当理解，这仅仅是示意性的，在根据本公开的实施例中网络设备110可以具有多个从小区。在图1的示例中，终端设备120在主CC上与主小区101通信，并且可选地在从CC上与从小区102通信。
在图1的示例中，通信网络100中的通信可以根据任何适当的通信协议来实施，包括但不限于，第一代(1G)、第二代(2G)、第三代(3G)、第四代(4G)和第五代(5G)等蜂窝通信协议、诸如电气与电子工程师协会(IEEE)802.11等的无线局域网通信协议、和/或目前已知或者将来开发的任何其他协议。而且，该通信使用任意适当无线通信技术，包括但不限于，码分多址(CDMA)、频分多址(FDMA)、时分多址(TDMA)、频分双工(FDD)、时分双工(TDD)、多输入多输出(MIMO)、正交频分多址(OFDM)、和/或目前已知或者将来开发的任何其他技术。
应当理解，图1所示的网络设备的数目、终端设备的数目、主小区和从小区的数目仅仅是出于说明之目的而无意于限制。通信网络100可以包括任意适当类型和数目的网络设备和小区，各个网络设备 可以提供适当范围和适当数目的覆盖，并且通信网络100还可以包括任意适当类型和数目的终端设备。
下面将结合图2至图6分别从网络设备和终端设备的角度，对本公开的原理和具体实施例进行详细说明。首先参考图2，其示出了根据本公开的某些实施例的在终端设备侧实施的方法200的流程图。可以理解，方法200可以例如在如图1所示的网络设备110处实施。
方法200开始于框210，其中网络设备110响应于其主小区101的传输带宽的切换，确定针对网络设备110的从小区102的操作状态的配置。主小区101的传输带宽是主小区101与终端设备120进行通信所使用的带宽。
在一些实施例中，主小区101的传输带宽的切换可以是主小区的传输带宽切换到针对主小区预配置的默认传输带宽，例如，主小区101所使用的BWP切换到其默认BWP。附加地或替代地，在一些实施例中，该切换也可以是主小区的传输带宽切换到针对主小区预配置的正常传输带宽，例如主小区101从其默认BWP切换到其正常BWP。
根据本公开的实施例，主小区101的传输带宽上述切换可以通过多种方式(例如，预定义事件的发生)来确定。例如，如果主小区101的传输带宽定时器到期，则可以确定主小区101的传输带宽切换到针对所述主小区预配置的默认传输带宽。附加地或替代地，如果主小区101的负载超过阈值负载，例如需要传输大量数据或者服务较多数目的终端设备，则可以确定主小区101的传输带宽切换到针对主小区101预配置的正常传输带宽。
根据本公开的实施例，主小区101的传输带宽的切换可以触发从小区102的多种操作状态。这些操作状态例如但不限于：激活状态；去激活状态；激活状态并且传输带宽被切换到默认传输带宽；激活状态并且传输带宽被切换到针对所述从小区预配置的正常传输带宽；等等。
例如，在一些实施例中，当主小区101的传输带宽定时器出于节电目的而超时或到期时，主小区101将切换成默认BWP。对于从小 区102，从小区102的传输带宽定时器和相应的默认BWP是可选的。从小区102可能具有两个定时器：从小区102的传输带宽定时器，用于控制普通宽带BWP和窄带BWP之间的切换；以及从小区102的去激活定时器，用于控制从小区102的激活/去激活状态。在这些实施例中，对于正常配置的从小区102，当发生主小区101的传输带宽定时器到期事件时，可能具有三种操作状态：状态1：从小区102处于正常工作状态，其去激活定时器和传输带宽定时器都处于运行状态；状态2：从小区工作在默认的BWP模式下，从小区102去激活定时器仍在运行，从小区102的传输带宽定时器已经到期；以及状态3：从小区102处于非活动状态，没有任何定时器在运行。
应当理解，上述操作状态都是示例性的，其仅仅是出于说明之目的而无意于限制。在本公开的范围内，从小区可以具有其他任何适当的操作状态。
根据本公开的实施例，针对从小区102的操作状态的配置可以通过多种方式来确定。图3示出了根据本公开的某些实施例的确定从小区的操作状态的配置的方法300的流程图。应当理解，图3所示的实施例是图2所示的框210的一种实现方式，其仅仅是示例性的，而不是限制性的。图3的实施例可以例如由图1所示的网络设备110执行。
在框310，响应于确定主小区101的传输带宽切换到针对主小区101预配置的默认传输带宽，确定与从小区102的传输带宽相关联信息。在框320，响应于从小区102的传输带宽是针对从小区102预配置的正常传输带宽，将从小区102的传输带宽切换到针对从小区102预配置的默认传输带宽。在框330，响应于从小区102的默认传输带宽未被配置、从小区102的传输带宽定时器也未被配置并且从小区102的去激活定时器未到期，将从小区102设置成去激活状态。
作为另一种替代方案，在本公开的另一些实施例中，网络设备110还可以响应于确定所述主小区102的传输带宽切换到针对所述主小区101预配置的默认传输带宽，将所述从小区102设置成去激活状态。在这些实施例中，可以停止从小区102的去激活计时器。
作为又一种替代方案，图4示出了根据本公开的某些实施例的确定从小区的操作状态的配置的方法400的流程图。应当理解，图4所示的实施例是图2所示的框210的一种实现方式，其仅仅是示例性的，而不是限制性的。图4的实施例可以例如由图1所示的网络设备110执行。
在框410，响应于确定主小区101的传输带宽切换到针对主小区101预配置的正常传输带宽，确定从小区102是否处于去激活状态。在框420，响应于确定从小区102处于去激活状态，激活从小区102。这样，从小区102即可处于激活状态下。在框430，响应于确定从小区102处于激活状态，确定从小区102的传输带宽是否为针对从小区102预配置的默认传输带宽。在框440，响应于确定从小区102的传输带宽为针对从小区102预配置的默认传输带宽，将从小区102的传输带宽切换为针对从小区102预配置的正常传输带宽。
应当理解，以上讨论的用于确定从小区102的操作状态的配置的实施例都是示例性的，其仅仅是出于说明之目的而无意于限制。本领域技术人员可以采用在本公开的范围内的其他适当实施方式来确定该配置。
继续参考图2，在框220，网络设备110向终端设备120发送所确定的配置，以使得终端设备120基于该配置来确定从小区102的操作状态。网络设备110可以利用高层信令，例如无线资源控制(RRC)信令，也可以利用L1层信令，例如下行链路控制(PDCCH)，来发送在框210所确定的配置。例如，网络设备110可以向终端设备120发送包括该配置的无线资源控制信令或者下行链路控制信令。
在一些实施例中，网络设备110采用高层信令。例如，当网络设备110通过RRC过程配置从小区102时，当主小区101的传输带宽定时器到期时，网络设备110可以将该配置包括在RRC信令中发送给终端设备120，以指导在从小区102上的UE行为。
替代地，在一些实施例中，网络设备110可以采用L1信令来发送该配置。这对于以下情况可能是特别有利的，即，主小区101工作 在一个正常BWP，但网络设备110可能需要立即将业务切换到从小区102。在这些实施例中，网络设备110可以发送下行链路控制信息(DCI)，这样，主小区101的传输带宽有可能在其传输带宽定时器到期之前即切换到其默认BWP。对于这种情况，网络设备110可以在DCI中包括一个指示，以保证至少一个从小区正常工作。
终端设备120接收到来自网络设备110的信令后，可以从该信令中提取对从小区102的操作状态的配置，并基于该配置来确定从小区102的操作状态。通过网络设备110根据主小区101的传输带宽的切换来配置从小区102的行为，并且将这种配置通知终端设备120，可以在满足数据传输要求的同时，改善节能效果，从而改善系统性能。
图5示出了根据本公开的某些实施例的在终端设备侧实施的方法500的流程图。可以理解，方法500可以例如在如图1所示的终端设备120处实施。
方法500开始于框510，其中终端设备120从网络设备接收针对网络设备110的从小区102的操作状态的配置。该配置是网络设备110响应于网络设备110的主小区101的传输带宽的切换而确定的，例如根据上述图2-图4所讨论的实施例而确定。主小区101的传输带宽是主小区101与终端设备120进行通信所使用的带宽。
根据本公开的一些实施例，终端设备120可以从无线资源控制信令或者下行链路控制信令中接收上述配置。应当理解，这仅仅是示例性而非限制性的，在本公开的实施例的范围内还可以采用其他适当的方式来从网络设备110向终端设备120传输针对从小区102的操作状态的配置。
在框520，终端设备120基于该配置来确定从小区102的操作状态。根据本公开的实施例，基于接收到的该配置，终端设备120可以确定所述从小区102被设置成激活状态；确定所述从小区102被设置成去激活状态；确定所述从小区102处于激活状态、并且所述从小区102的传输带宽被切换到针对所述从小区102预配置的默认传输带宽；确定所述从小区102处于激活状态、并且所述从小102区的传输带宽 被切换到针对所述从小区102预配置的正常传输带宽；和/或从小区102的其他状态。
以此方式，终端设备120可以了解主小区101的行为变化所引起的从小区102的操作状态，从而可以通过多种不同选项来实现与主小区和从小区的数据传输。这样的数据传输能够在满足传输要求的同时提高节能效率，从而可以有效改善系统性能。
以下通过更详细的示例来进一步描述本公开的实施例。应当理解，以下示例仅仅是为了说明之目的，无意以任何方式限制本公开的范围。
在一些实施例中，主小区的传输带宽(例如BWP)在默认BWP和正常BWP之间的切换具有如下3种潜在的应用场景。
场景1：无数据传输或仅有小数据传输，这时仅主小区的默认BWP才能满足传输要求。
场景2：有大量数据需要传输，但是在某些情况下(例如，主小区过载时)，网络设备(例如gNB)希望将这些流量负载分流到从小区，而不是仅使用主小区来传输数据。
场景3：有大量数据需要传输，主小区切换到其正常BWP，以完成这样的数据传输。
关于场景1，当主小区的默认BWP能够满足数据传输要求时，则不需要从小区进行数据传输，否则会浪费功率并且无法最优地将从小区保持在该从小区的正常BWP。也就是说，对于场景1而言，将从小区移动到窄带默认BWP，或者使从小区去激活，则可以节省更多功率。
关于场景2，虽然主小区处于良好的无线信道状态，但是gNB希望在从小区上而不是在主小区上调度大部分数据。然后，主小区将切换到其默认BWP(通常默认BWP是一个较窄的带宽)，以节省功率。另一方面，需要保证至少一个从小区将在正常的宽带情况下工作来传输缓冲的数据。但是如果所有的从小区处于非活动状态或者处于默认的BWP状态，则需要保证至少有一个从小区处于正常的宽带状态。如果当主小区定时器到期时直接发送下行链路(DL)信令(L1/L2层 信令)来激活从小区，则这样会导致额外的DL信令。根据本公开的实施例，可以使主小区定时器到期事件来自动启动(重启)从小区的定时器，这有利地避免了引起额外信令开销。
另外，关于场景3，其中大量数据正在等待传输。例如，通过调度DCI信令，gNB可以触发主小区的BWP切换到其正常BWP。在这种情况下，从小区也将处于活动状态，以便可以立即传输数据。也就是说，主小区切换到正常的BWP可以自动激活从小区。
根据本公开的实施例，网络设备可以针对上述3种场景进行识别和区分，并确定针对从小区的不同配置来指导终端设备(例如UE)的行为，从而实现节省功率和数据传输之间的权衡，同时能够节省DL信令。具体而言，本公开的实施例可以从gNB向UE发送指示，以指导UE行为如何将从小区激活/去激活/BWP切换与主小区的BWP切换相关联。
具体而言，在一些实施例中(又称为选项1)，主小区的传输带宽定时器(以下简称“主小区定时器”)到期事件可以停止主小区的传输带宽定时器(以下简称“从小区定时器”)。
对于选项1，当主小区定时器到期或发生DCI触发切换到主小区的默认BWP时，gNB指示UE在从小区上没有传输要求，则可以利用以下两种类型的行为来节省更多UE功率：
类型1：如果从小区工作在其正常BWP，并配置了从小区定时器和从小区的默认BWP，则主小区的BWP切换事件会自动停止从小区定时器，并将从小区切换到相应的默认BWP(通常为较窄的带宽)。这样，可以保证UE以从小区的较窄带宽来工作，从而可以节省功率。
类型2：如果从小区已经在其默认BWP工作，并且不需要使用这样的默认BWP来进行传输，则可以对这个从小区去激活。也即，在这种情况下，如果主小区切换成该主小区的默认BWP，则从小区的去激活定时器将被直接停止。
在另一些实施例(又称为选项2)中，主小区定时器到期事件可以停止从小区去激活定时器。
对于选项2，无论从小区是在正常宽带BWP还是窄带BWP下工作，主小区切换到其默认BWP这一事件都会直接停止从小区的去激活定时器，使得处于激活状态的从小区被去激活，从而节省功耗。
上述这些实施例(选项1和选项2)对于场景1(没有传输或者仅有小数据传输)是有效的。在这种情况下，针对该主小区预配置的默认BWP(即，主小区的默认BWP)即可满足数据传输要求，而无需其他从小区。
在又一些实施例(又称为选项3)中，主小区的BWP从默认BWP切换成其正常BWP，则可以激活从小区和/或触发从小区切换到该从小区的正常BWP。
选项3所对应的实施例适用于主小区通过调度DCI而切换回其正常BWP的场景，例如具有大量数据需要传送的情况和/或需要将业务转移至从小区的情况。对于这些情况，由于大量的数据正在等待传输，所以需要从小区来满足数据传输的要求。但是，如果没有任何从小区处于正常活动状态，则可以直接发送额外的DL信令来激活至少一个从小区。本公开的实施例有效避免了这种额外的DL信令。具体而言，本公开的实施例例如通过调度DCI，而使得主小区切换到该主小区预配置的正常BWP这一事件会自动激活至少一个从小区。根据选项3所对应的实施例，当gNB将主小区切换成针对该主小区预配置的正常BWP(即，主小区的正常BWP)时，可以保证至少有一个从小区正常工作，接管数据传输任务。
图6示出了适合实现本公开的实施例的设备600的方框图。设备600可以用来实现网络设备或终端设备，例如图1中所示的网络设备110和终端设备120。
如图所示，设备600包括控制器610。控制器610控制设备600的操作和功能。例如，在某些实施例中，控制器610可以借助于与其耦合的存储器620中所存储的指令630来执行各种操作。存储器620可以是适用于本地技术环境的任何合适的类型，并且可以利用任何合适的数据存储技术来实现，包括但不限于基于半导体的存储器件、磁 存储器件和系统、光存储器件和系统。尽管图6中仅仅示出了一个存储器单元，但是在设备600中可以有多个物理不同的存储器单元。
控制器610可以是适用于本地技术环境的任何合适的类型，并且可以包括但不限于通用计算机、专用计算机、微控制器、数字信号控制器(DSP)以及基于控制器的多核控制器架构中的一个或多个多个。设备600也可以包括多个控制器610。控制器610与收发器640耦合，收发器640可以借助于一个或多个天线650和/或其他部件来实现信息的接收和发送。
当设备600充当网络设备110时，控制器610和收发器640可以配合操作，以实现上文参考图2描述的方法200。其中，控制器610被配置用于响应于网络设备的主小区的传输带宽的切换，确定针对网络设备的从小区的操作状态的配置，主小区的传输带宽是主小区与终端设备进行通信所使用的带宽。收发器640被配置用于向终端设备发送该配置，以使得终端设备基于该配置来确定从小区的操作状态。
在一些实施例中，控制器610可以被进一步配置用于：响应于确定主小区的传输带宽切换到针对主小区预配置的默认传输带宽，确定与从小区的传输带宽相关联信息；响应于从小区的传输带宽是针对从小区预配置的正常传输带宽，将从小区的传输带宽切换到针对从小区预配置的默认传输带宽；以及响应于从小区的默认传输带宽未被配置、从小区的传输带宽定时器也未被配置并且从小区的去激活定时器未到期，将从小区设置成去激活状态。
在一些实施例中，控制器610可以被进一步配置用于：响应于确定主小区的传输带宽切换到针对主小区预配置的默认传输带宽，将从小区设置成去激活状态。
在一些实施例中，控制器610可以被进一步配置用于：停止从小区的去激活计时器。
在一些实施例中，控制器610可以被进一步配置用于：响应于确定主小区的传输带宽切换到针对主小区预配置的正常传输带宽，确定从小区是否处于去激活状态；响应于确定从小区处于去激活状态，激 活从小区；响应于确定从小区处于激活状态，确定从小区的传输带宽是否为针对从小区预配置的默认传输带宽；以及响应于确定从小区的传输带宽为针对从小区预配置的默认传输带宽，将从小区的传输带宽切换为针对从小区预配置的正常传输带宽。
在一些实施例中，收发器640可以被进一步配置用于：向终端设备发送包括配置的无线资源控制信令或者下行链路控制信令。
在一些实施例中，控制器610可以被进一步配置用于：响应于主小区的传输带宽定时器到期，确定主小区的传输带宽切换到针对主小区预配置的默认传输带宽；以及响应于主小区的负载超过阈值负载，确定主小区的传输带宽切换到针对主小区预配置的正常传输带宽。
当设备600充当终端设备120时，控制器610和收发器640可以配合操作，以实现上文参考图5描述的方法500。其中，收发器640被配置用于从网络设备接收针对网络设备的从小区的操作状态的配置，该配置是网络设备响应于网络设备的主小区的传输带宽的切换而确定的，主小区的传输带宽是主小区与终端设备进行通信所使用的带宽；以及控制器610被配置用于基于该配置来确定从小区的操作状态。
在一些实施例中，收发器640可以被进一步配置用于：从无线资源控制信令或者下行链路控制信令中接收该配置。
在一些实施例中，控制器610可以被进一步配置用于执行以下至少一项：确定从小区被设置成激活状态；确定从小区被设置成去激活状态；确定从小区处于激活状态、并且从小区的传输带宽被切换到针对从小区预配置的默认传输带宽；以及确定从小区处于激活状态、并且从小区的传输带宽被切换到针对从小区预配置的正常传输带宽。
上文参考图2至图5所描述的所有特征均适用于设备600，在此不再赘述。
一般而言，本公开的各种示例实施例可以在硬件或专用电路、软件、逻辑，或其任何组合中实施。某些方面可以在硬件中实施，而其他方面可以在可以由控制器、微处理器或其他计算设备执行的固件或软件中实施。当本公开的实施例的各方面被图示或描述为框图、流程 图或使用某些其他图形表示时，将理解此处描述的方框、装置、系统、技术或方法可以作为非限制性的示例在硬件、软件、固件、专用电路或逻辑、通用硬件或控制器或其他计算设备，或其某些组合中实施。
作为示例，本公开的实施例可以在机器可执行指令的上下文中被描述，机器可执行指令诸如包括在目标的真实或者虚拟处理器上的器件中执行的程序模块中。一般而言，程序模块包括例程、程序、库、对象、类、组件、数据结构等，其执行特定的任务或者实现特定的抽象数据结构。在各实施例中，程序模块的功能可以在所描述的程序模块之间合并或者分割。用于程序模块的机器可执行指令可以在本地或者分布式设备内执行。在分布式设备中，程序模块可以位于本地和远程存储介质二者中。
用于实现本公开的方法的计算机程序代码可以用一种或多种编程语言编写。这些计算机程序代码可以提供给通用计算机、专用计算机或其他可编程的数据处理装置的处理器，使得程序代码在被计算机或其他可编程的数据处理装置执行的时候，引起在流程图和/或框图中规定的功能/操作被实施。程序代码可以完全在计算机上、部分在计算机上、作为独立的软件包、部分在计算机上且部分在远程计算机上或完全在远程计算机或服务器上执行。
在本公开的上下文中，机器可读介质可以是包含或存储用于或有关于指令执行系统、装置或设备的程序的任何有形介质。机器可读介质可以是机器可读信号介质或机器可读存储介质。机器可读介质可以包括但不限于电子的、磁的、光学的、电磁的、红外的或半导体系统、装置或设备，或其任意合适的组合。机器可读存储介质的更详细示例包括带有一根或多根导线的电气连接、便携式计算机磁盘、硬盘、随机存储存取器(RAM)、只读存储器(ROM)、可擦除可编程只读存储器(EPROM或闪存)、光存储设备、磁存储设备，或其任意合适的组合。
另外，尽管操作以特定顺序被描绘，但这并不应该理解为要求此类操作以示出的特定顺序或以相继顺序完成，或者执行所有图示的操 作以获取期望结果。在某些情况下，多任务或并行处理会是有益的。同样地，尽管上述讨论包含了某些特定的实施细节，但这并不应解释为限制任何发明或权利要求的范围，而应解释为对可以针对特定发明的特定实施例的描述。本说明书中在分开的实施例的上下文中描述的某些特征也可以整合实施在单个实施例中。反之，在单个实施例的上下文中描述的各种特征也可以分离地在多个实施例或在任意合适的子组合中实施。
尽管已经以特定于结构特征和/或方法动作的语言描述了主题，但是应当理解，所附权利要求中限定的主题并不限于上文描述的特定特征或动作。相反，上文描述的特定特征和动作是作为实现权利要求的示例形式而被公开的。

Claims (22)

  1. 一种在网络设备处实现的方法，包括：
    响应于所述网络设备的主小区的传输带宽的切换，确定针对所述网络设备的从小区的操作状态的配置，所述主小区的传输带宽是所述主小区与终端设备进行通信所使用的带宽；以及
    向所述终端设备发送所述配置，以使得所述终端设备基于所述配置来确定所述从小区的操作状态。
  2. 根据权利要求1所述的方法，其中确定针对所述网络设备的从小区的操作状态的配置包括：
    响应于确定所述主小区的传输带宽切换到针对所述主小区预配置的默认传输带宽，确定与所述从小区的传输带宽相关联信息；
    响应于所述从小区的传输带宽是针对所述从小区预配置的正常传输带宽，将所述从小区的传输带宽切换到针对所述从小区预配置的默认传输带宽；以及
    响应于所述从小区的默认传输带宽未被配置、所述从小区的传输带宽定时器也未被配置并且所述从小区的去激活定时器未到期，将所述从小区设置成去激活状态。
  3. 根据权利要求1所述的方法，其中确定针对所述网络设备的从小区的操作状态的配置包括：
    响应于确定所述主小区的传输带宽切换到针对所述主小区预配置的默认传输带宽，将所述从小区设置成去激活状态。
  4. 根据权利要求3所述的方法，其中将所述从小区设置成去激活状态包括：
    停止所述从小区的去激活计时器。
  5. 根据权利要求1所述的方法，其中确定针对所述网络设备的从小区的操作状态的配置包括：
    响应于确定所述主小区的传输带宽切换到针对所述主小区预配置的正常传输带宽，确定所述从小区是否处于去激活状态；
    响应于确定所述从小区处于去激活状态，激活所述从小区；
    响应于确定所述从小区处于激活状态，确定所述从小区的传输带宽是否为针对所述从小区预配置的默认传输带宽；以及
    响应于确定所述从小区的传输带宽为针对所述从小区预配置的默认传输带宽，将所述从小区的传输带宽切换为针对所述从小区预配置的正常传输带宽。
  6. 根据权利要求1所述的方法，其中向所述终端设备发送所述配置包括：
    向所述终端设备发送包括所述配置的无线资源控制信令或者下行链路控制信令。
  7. 根据权利要求1所述的方法，还包括以下至少一项：
    响应于所述主小区的传输带宽定时器到期，确定所述主小区的传输带宽切换到针对所述主小区预配置的默认传输带宽；以及
    响应于所述主小区的负载超过阈值负载，确定所述主小区的传输带宽切换到针对所述主小区预配置的正常传输带宽。
  8. 一种在终端设备处实现的方法，包括：
    从网络设备接收针对网络设备的从小区的操作状态的配置，所述配置是所述网络设备响应于所述网络设备的主小区的传输带宽的切换而确定的，所述主小区的传输带宽是所述主小区与所述终端设备进行通信所使用的带宽；以及
    基于所述配置来确定所述从小区的操作状态。
  9. 根据权利要求8所述的方法，其中从网络设备接收针对网络设备的从小区的操作状态的配置包括：
    从无线资源控制信令或者下行链路控制信令中接收所述配置。
  10. 根据权利要求8所述的方法，其中基于所述配置来确定所述从小区的操作状态包括以下至少一项：
    确定所述从小区被设置成激活状态；
    确定所述从小区被设置成去激活状态；
    确定所述从小区处于激活状态、并且所述从小区的传输带宽被切 换到针对所述从小区预配置的默认传输带宽；以及
    确定所述从小区处于激活状态、并且所述从小区的传输带宽被切换到针对所述从小区预配置的正常传输带宽。
  11. 一种用于通信的网络设备，包括：
    控制器，被配置为响应于所述网络设备的主小区的传输带宽的切换，确定针对所述网络设备的从小区的操作状态的配置，所述主小区的传输带宽是所述主小区与终端设备进行通信所使用的带宽；以及
    收发器，被配置为向所述终端设备发送所述配置，以使得所述终端设备基于所述配置来确定所述从小区的操作状态。
  12. 根据权利要求11所述的网络设备，其中所述控制器被进一步配置为：
    响应于确定所述主小区的传输带宽切换到针对所述主小区预配置的默认传输带宽，确定与所述从小区的传输带宽相关联信息；
    响应于所述从小区的传输带宽是针对所述从小区预配置的正常传输带宽，将所述从小区的传输带宽切换到针对所述从小区预配置的默认传输带宽；以及
    响应于所述从小区的默认传输带宽未被配置、所述从小区的传输带宽定时器也未被配置并且所述从小区的去激活定时器未到期，将所述从小区设置成去激活状态。
  13. 根据权利要求11所述的网络设备，其中所述控制器被进一步配置为：
    响应于确定所述主小区的传输带宽切换到针对所述主小区预配置的默认传输带宽，将所述从小区设置成去激活状态。
  14. 根据权利要求13所述的网络设备，其中所述控制器被进一步配置为：
    停止所述从小区的去激活计时器。
  15. 根据权利要求11所述的网络设备，其中所述控制器被进一步配置为：
    响应于确定所述主小区的传输带宽切换到针对所述主小区预配 置的正常传输带宽，确定所述从小区是否处于去激活状态；
    响应于确定所述从小区处于去激活状态，激活所述从小区；
    响应于确定所述从小区处于激活状态，确定所述从小区的传输带宽是否为针对所述从小区预配置的默认传输带宽；以及
    响应于确定所述从小区的传输带宽为针对所述从小区预配置的默认传输带宽，将所述从小区的传输带宽切换为针对所述从小区预配置的正常传输带宽。
  16. 根据权利要求11所述的网络设备，其中所述收发器被进一步配置为：
    向所述终端设备发送包括所述配置的无线资源控制信令或者下行链路控制信令。
  17. 根据权利要求11所述的网络设备，其中所述控制器被进一步配置为执行以下至少一项：
    响应于所述主小区的传输带宽定时器到期，确定所述主小区的传输带宽切换到针对所述主小区预配置的默认传输带宽；以及
    响应于所述主小区的负载超过阈值负载，确定所述主小区的传输带宽切换到针对所述主小区预配置的正常传输带宽。
  18. 一种用于通信的终端设备，包括：
    收发器，被配置为从网络设备接收针对网络设备的从小区的操作状态的配置，所述配置是所述网络设备响应于所述网络设备的主小区的传输带宽的切换而确定的，所述主小区的传输带宽是所述主小区与所述终端设备进行通信所使用的带宽；以及
    控制器，被配置为基于所述配置来确定所述从小区的操作状态。
  19. 根据权利要求18所述的终端设备，其中所述收发器被进一步配置为：
    从无线资源控制信令或者下行链路控制信令中接收所述配置。
  20. 根据权利要求18所述的终端设备，其中所述控制器被进一步配置为执行以下至少一项：
    确定所述从小区被设置成激活状态；
    确定所述从小区被设置成去激活状态；
    确定所述从小区处于激活状态、并且所述从小区的传输带宽被切换到针对所述从小区预配置的默认传输带宽；以及
    确定所述从小区处于激活状态、并且所述从小区的传输带宽被切换到针对所述从小区预配置的正常传输带宽。
  21. 一种网络设备，包括：
    处理器和存储器，所述存储器包括所述处理器可执行的程序，当执行所述程序时，所述处理器使得所述网络设备执行根据权利要求1-7中任一项的方法。
  22. 一种终端设备，包括：
    处理器和存储器，所述存储器包括所述处理器可执行的程序，当执行所述程序时，所述处理器使得所述终端设备执行根据权利要求8-10中任一项的方法。
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