WO2011079623A1 - 一种多载波系统下的载波管理方法和演进型基站 - Google Patents

一种多载波系统下的载波管理方法和演进型基站 Download PDF

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Publication number
WO2011079623A1
WO2011079623A1 PCT/CN2010/076776 CN2010076776W WO2011079623A1 WO 2011079623 A1 WO2011079623 A1 WO 2011079623A1 CN 2010076776 W CN2010076776 W CN 2010076776W WO 2011079623 A1 WO2011079623 A1 WO 2011079623A1
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Prior art keywords
parameter
carrier
parameters
enb
activation
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PCT/CN2010/076776
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English (en)
French (fr)
Inventor
戴谦
施小娟
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中兴通讯股份有限公司
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Publication of WO2011079623A1 publication Critical patent/WO2011079623A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0037Inter-user or inter-terminal allocation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/0001Arrangements for dividing the transmission path
    • H04L5/0003Two-dimensional division
    • H04L5/0005Time-frequency
    • H04L5/0007Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058Allocation criteria
    • H04L5/0064Rate requirement of the data, e.g. scalable bandwidth, data priority
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/04Wireless resource allocation
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00Reducing energy consumption in communication networks
    • Y02D30/70Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present invention relates to the field of wireless communication technologies, and in particular, to a carrier management method and an evolved base station in a multi-carrier system.
  • E-UTRAN Evolved Universal Terrestrial Radio Access Network
  • LTE Long Term Evolution
  • PUSCH Physical Uplink Shared Channel
  • An uplink radio resource is allocated to each user terminal (User Equipment, UE for short) by an Evolved NodeB (eNB).
  • the access technology used by E-UTRAN is OFDM (Orthogonal Frequency Division Multiplexing) technology.
  • the radio resource management of E-UTRAN system has large bandwidth and multiple time compared with the second generation mobile communication system. The characteristics of the process, its wireless resources appear in two dimensions of time and frequency, and the number of users that can be carried is greatly increased.
  • the LTE system is a single carrier system.
  • the UE needs to complete the following steps to complete the connection with the eNB. For the process, see Figure 1:
  • the UE needs to obtain downlink synchronization of the downlink carrier (step 101), and obtain system information by reading the broadcast channel (step 102).
  • the system information mainly includes the system bandwidth of the downlink carrier, the system frame number, the cell access information, the common shared channel information, the cell reselection information of the serving cell, the cell reselection information of the neighboring cell and the inter-frequency cell, and the like.
  • the system information is necessary information that the UE needs to maintain the RRC-IDLE (Radio Resource Control; Radio Resource Control; IDLE, Idle; RRC-IDLE, RRC Idle) state.
  • RRC-IDLE Radio Resource Control; Radio Resource Control; IDLE, Idle; RRC-IDLE, RRC Idle
  • the UE needs to initiate a random access procedure to complete the uplink carrier synchronization with the eNB.
  • the eNB sends an RRC configuration message to the UE (step 104), where the configuration message includes RRC radio resource specific configuration information, that is, MAC (Media Access Control, media connection) Incoming control layer configuration information, SPS (Semi-Persistent Scheduling) configuration information, dedicated physical channel configuration information, logical channel configuration information, common control channel configuration information, and the like.
  • RRC radio resource specific configuration information that is, MAC (Media Access Control, media connection) Incoming control layer configuration information, SPS (Semi-Persistent Scheduling) configuration information, dedicated physical channel configuration information, logical channel configuration information, common control channel configuration information, and the like.
  • the configuration information is required information that the UE needs to maintain in the RRC-CON ECTED (CONNECTED, RRC-CONNECTED) state.
  • the UE completes the connection with the eNB, and can receive the resource scheduling instruction delivered by the eNB to perform communication.
  • LTE-Advanced is the 3GPP (the 3rd Generation Partner Project) organization to meet the ITU (International Telecommunication Union) IMT-Advanced (International Mobile Telecommunication-Advanced) The standard for the launch of mobile communication).
  • the LTE-Advanced system is an evolved version based on the LTE release 8 system. It introduces many new technologies to meet the basic needs of IMT-Advanced. One of the most important technologies is carrier aggregation.
  • the LTE-Advanced system Due to the current shortage of wireless spectrum resources, the spectrum resources owned by mobile operators in the world tend to be scattered, and IMT-Advanced requires higher peak rate indicators (100 Mbps for high mobility and 1 Gbps for low mobility).
  • the current 20MHz bandwidth of the LTE standard cannot meet the requirements of IMT-Advanced, so it needs to be expanded to higher bandwidth, such as 40MHz, 60MHz, or even higher.
  • One of the methods to increase the bandwidth and peak rate is to expand the frequency domain, that is, to bundle several 20MHz-based LTE bands together and expand the bandwidth by "carrier aggregation", which is the essence of carrier aggregation technology. Therefore, the LTE-Advanced system also belongs to a multi-carrier system.
  • the carrier participating in the aggregation is called a component carrier, and the UE can transmit and transmit on the multiple component carriers simultaneously with the eNB, and the UE remains on the single component carrier.
  • the feature of LTE release8 means that the LTE-Advanced system can be seen as a "bundle" of multiple LTE systems.
  • the component carriers may be continuous or discontinuous in the frequency band.
  • the UE of the LTE-Advanced standard can use the large bandwidth frequency resource to implement a large-traffic data service.
  • wireless networks can support a wide variety of services, such as VoIP (voice over Internet). Protocol, network voice service, video stream, FTP (File Transfer Protocol), web browsing service, different traffic requirements, some have small requirements (such as VoiP), and some Great demand (eg FTP).
  • VoIP voice over Internet
  • FTP File Transfer Protocol
  • web browsing service different traffic requirements, some have small requirements (such as VoiP), and some Great demand (eg FTP).
  • VoiP VoiP
  • FTP Great demand
  • the LTE-Advanced system requires flexible management of multiple carriers, for example, flexibly and dynamically adjusted according to the requirements of the user's traffic load, the carrier spectrum load, and the carrier channel conditions.
  • the number of component carriers used by each user The more component carriers a user uses, the larger the bandwidth that the theory can allocate, but the more additional common control channel resources are needed, the more power the UE consumes, when the eNB allocates multiple UEs. Component carriers, when the utilization of these component carriers is very low, will result in waste of resources. Therefore, the LTE-Advanced system needs to have a mechanism for flexibly adding and deleting component carriers for each UE.
  • the mechanism for adding and deleting carriers of the LTE system is for a single carrier system, and the foregoing multiple steps as shown in FIG. 1 need to be completed.
  • the UE In the LTE-Advanced system, the UE is only accessing the initial carrier (ie, the first one) The component carrier needs to complete all of these steps.
  • the eNB wants to add more carriers to the UE, the UE does not need to establish such a connection with the eNB on these additional carriers. For example, the newly added carrier and the initial carrier are synchronized.
  • the UE When the UE does not need to initiate random access on the newly added carrier; for example, the newly added carrier of the UE does not necessarily use the data to be sent immediately, then if the carrier is activated, the carrier is activated (described here)
  • the activation means that the UE enables the configuration parameter of the carrier sent by the eNB, and starts to send an uplink reference signal and channel quality indication information, and the UE can receive the scheduling instruction of the eNB at any time, and the UE generates the newly added carrier. Additional system overhead and power consumption.
  • One scheme is a "one-step" scheme:
  • the eNB wants to add a carrier for the UE, the eNB sends all the configuration parameters of the target carrier to the next step.
  • the UE can be transmitted on all other carriers already existing by the UE through RRC signaling, and can also use RRC signaling and notify the UE to read the combination of the broadcast channels).
  • the UE receives configuration parameters of all target carriers, the UE automatically The carrier is activated to start uplink transmission and downlink reception; when the eNB wants to delete the carrier for the UE, the eNB notifies the UE of the destination to be deleted.
  • the UE deactivates (the deactivation refers to the UE stopping all uplink transmission and downlink reception on the target carrier, but does not release the configuration parameters) the target carrier, and simultaneously releases all configuration parameters of the target carrier.
  • the deactivation refers to the UE stopping all uplink transmission and downlink reception on the target carrier, but does not release the configuration parameters
  • the target carrier simultaneously releases all configuration parameters of the target carrier.
  • the disadvantage of this solution is that each time the UE adds and deletes a carrier, it needs to generate a large RRC signaling overhead with the eNB, and bundles the parameter configuration and activation of the carrier, which severely limits the flexibility of carrier management. .
  • Another solution is a "two-step" solution:
  • the eNB wants to add a carrier to the UE, the eNB sends all configuration parameters of the target carrier to the UE in one step, and the UE receives the configuration parameters of all the target carriers but does not automatically activate the The carrier, the eNB decides when to send the signaling of the activated target carrier to the UE according to the resource management situation (such as the load balancing situation between the carriers, the traffic demand of the UE, etc.), and then the UE receives the activation signaling.
  • the resource management situation such as the load balancing situation between the carriers, the traffic demand of the UE, etc.
  • the management situation determines when to send signaling to the UE to delete the target carrier. When the UE receives the deletion signaling, all configuration parameters of the target carrier are released.
  • some of the configuration parameters of the carrier are common configuration parameters that rarely change, and some are configuration parameters related to the occupation of control channel resources and uplink reference signal resources ( For example, the configuration parameters of the channel quality indicator, the scheduling request configuration parameter, and the uplink reference signal configuration parameter), the resources configured by these parameters belong to a common resource shared by the UE.
  • the eNB allocates these common resources to a certain UE, it will inevitably affect other The public resource allocation of the UE. If the eNB sends all the configuration information of the target carrier to the UE but does not activate the carrier for a long time, the UE wastes the common resources of the target carrier and affects the system capacity.
  • the technical problem to be solved by the present invention is to provide a carrier management method and an evolved base station in a multi-carrier system, which can improve carrier management flexibility.
  • the present invention provides a carrier management method including carrier parameters.
  • Configuration All parameters of a carrier are divided into common parameters and dedicated parameters.
  • the evolved base station (eNB) performs carrier parameters in batches according to the classified types. Configuration.
  • all parameters of a carrier are divided into common parameters and dedicated parameters according to one of the following principles: If the network side judges that the parameters do not need to be changed within a preset time range according to a principle, it is divided into common parameters; If the side judgment parameter needs to be changed within the preset time range, it is divided into specific parameters; if the parameter is related to the allocation of any of the following channel resources of the carrier, it is divided into dedicated parameters, if the parameter and the carrier are any of the following If the allocation of channel resources is irrelevant, it is divided into common parameters: an uplink control channel, an uplink shared channel; and if the parameter belongs to a parameter in the system information transmitted by the broadcast channel, it is divided into a common parameter, if the parameter Parameters that are not part of the system information transmitted by the broadcast channel are divided into dedicated parameters.
  • the method further includes: dividing a parameter related to the uplink and downlink carrier channel estimation among the dedicated parameters into a channel quality specific parameter, and dividing a parameter of the dedicated parameter that is independent of uplink and downlink carrier channel estimation into Scheduling a dedicated parameter; configuring the parameters in batches according to the classified type: the eNB separately allocates the common parameters of the carrier, the channel quality specific parameters, and the scheduling specific parameters to the UE.
  • the division rules of the common parameters and the dedicated parameters are the same or different.
  • the method further includes: activation of a carrier parameter, where the activation of the carrier parameter is: the eNB batch activates all parameters configured to the UE, including channel quality part parameter activation and scheduling part parameter activation,
  • the channel quality part parameter activation is: activating parameters related to carrier channel estimation among all the parameters
  • the scheduling part parameter activation is: activating parameters of the all parameters that are not related to carrier channel estimation.
  • the eNB performs one of the following operations: configuration of the common parameter, configuration of a dedicated parameter, and activation of a channel quality part parameter; configuration of the dedicated parameter and activation of a channel quality part parameter; and configuration of the dedicated parameter , channel quality part parameter activation and scheduling part of the parameter activation.
  • the method further includes: activation of a carrier parameter, where the activation of the carrier parameter is: the eNB batch activates all parameters configured to the UE, including channel quality part parameters
  • the number of activations, the channel quality part parameter activation is: activating parameters related to carrier channel estimation among all parameters, and the eNB completes configuration of the channel quality specific parameters and channel quality partial parameter activation.
  • the method further includes: activation of a carrier parameter, where the activation of the carrier parameter is: the eNB batch activates all parameters configured to the UE, including scheduling part parameter activation, and the scheduling part
  • the parameter activation is: activating parameters related to carrier channel estimation among all the parameters, and the eNB completes configuration of the scheduling-specific parameters and scheduling part parameter activation.
  • the method further includes: if the UE receives the parameter reconfiguration message sent by the eNB in the process of configuring the carrier parameter and/or the activation of the carrier parameter, reconfiguring the content of the message according to the parameter Perform parameter reconfiguration.
  • the present invention further provides a carrier management method, including activation of a carrier parameter, where the activation of the carrier parameter includes: a parameter of an evolved base station (eNB) for batch activation configuration to a user equipment (UE), Including channel quality part parameter activation and scheduling part parameter activation, wherein the channel quality part parameter activation is: activating parameters related to carrier channel estimation in the parameter, the scheduling part parameter activation is: activating the parameter and Carrier channel estimation is independent of parameters.
  • eNB evolved base station
  • UE user equipment
  • the method further includes: if the UE receives the parameter reconfiguration message delivered by the eNB in the activation process of the carrier parameter, performing parameter reconfiguration according to the content of the parameter reconfiguration message.
  • the present invention further provides a carrier management method, including deactivation of a carrier parameter, where deactivating the carrier parameter includes: a process in which an evolved base station (eNB) instructs a user equipment (UE) to deactivate a carrier Instructing the UE to perform parameter deactivation in batches, including scheduling part parameter deactivation and channel quality part parameter deactivation, where the scheduling part parameter deactivation is: deactivating the parameter is independent of carrier channel estimation The parameter, the channel quality part parameter deactivation is: deactivating parameters related to carrier channel estimation in the parameter.
  • eNB evolved base station
  • UE user equipment
  • the method further includes: releasing a carrier parameter, where the releasing of the carrier parameter is: the eNB instructing the UE to release the carrier parameter in batches, including release of a dedicated parameter and release of a common parameter .
  • the method further comprises: the public parameter and the dedicated parameter are divided according to one of the following principles:
  • the network side judges that the parameter does not need to be changed within the preset time range according to a principle, it is divided into common parameters; if the network side judgment parameter needs to be changed within the preset time range, it is divided into special parameters; If the allocation of any of the following channel resources of the carrier is related, it is divided into specific parameters. If the parameter is independent of the allocation of any of the following channel resources of the carrier, it is divided into common parameters: uplink control channel, uplink The shared channel; and if the parameter belongs to a parameter in the system information transmitted by the broadcast channel, it is divided into a common parameter, and if the parameter does not belong to a parameter in the system information transmitted by the broadcast channel, it is divided into a dedicated parameter.
  • the eNB performs one of the following operations: the scheduling part parameter deactivation, the channel quality part parameter deactivation, and the release of the dedicated parameter; the channel quality part parameter deactivation and the release of the dedicated parameter; and the channel The mass part of the parameter is deactivated, the release of the dedicated parameter, and the release of the common parameter.
  • the parameter is released.
  • the method further includes: the eNB completing the scheduling part parameter deactivation and scheduling release of the dedicated parameter, and/or completing the release of the channel quality part parameter deactivation and the channel quality specific parameter.
  • the method further includes: if the UE receives the parameter reconfiguration message delivered by the eNB in the process of deactivating the carrier parameter and/or releasing the carrier parameter, reconfiguring the message according to the parameter Content is reconfigured for parameters.
  • the present invention further provides a carrier management method, including the release of a carrier parameter, where the release of the carrier parameter includes: the evolved base station (eNB) instructs the user equipment (UE) to release the configured carrier parameters in batches. , which includes the release of dedicated parameters and the release of common parameters.
  • the release of the carrier parameter includes: the evolved base station (eNB) instructs the user equipment (UE) to release the configured carrier parameters in batches. , which includes the release of dedicated parameters and the release of common parameters.
  • the method further includes: dividing the common parameter and the dedicated parameter according to one of the following principles: if the network side determines, according to a principle, that the parameter does not need to be changed within a preset time range, it is divided into a common parameter; If the network side judgment parameter needs to be changed within the preset time range, it is divided into specific parameters; if the parameter is related to the allocation of any of the following channel resources of the carrier, it is divided. a dedicated parameter, if the parameter is independent of the allocation of any of the following channel resources of the carrier, it is divided into common parameters: an uplink control channel, an uplink shared channel; and if the parameter belongs to the system information transmitted by the broadcast channel The parameter is divided into common parameters. If the parameter does not belong to the parameter in the system information sent by the broadcast channel, it is divided into special parameters.
  • the release of the dedicated parameter includes the release of channel quality specific parameters and the release of scheduling specific parameters.
  • the method further includes: if the UE receives the parameter reconfiguration message delivered by the eNB in the process of releasing the carrier parameter, performing parameter reconfiguration according to the content of the parameter reconfiguration message.
  • the present invention further provides an evolved base station that implements carrier management, including a parameter classification holding unit, a parameter configuration unit, and a parameter activation unit, where:
  • the parameter classification and holding unit is configured to divide all parameters of a carrier into common parameters and dedicated parameters, and save them separately;
  • the parameter configuration unit is configured to perform parameter configuration of the carrier on the user equipment (UE) in batch according to the content saved by the parameter classification and saving unit, and the parameter configuration of the carrier includes configuration of a common parameter and configuration of a dedicated parameter;
  • the parameter activation unit is configured to batch-activate parameters configured to the UE, including channel quality part parameter activation and scheduling part parameter activation, where the channel quality part parameter activation is: activating the parameter and the carrier Channel estimation related parameters, the scheduling part parameter activation is: activating parameters in the parameter that are not related to carrier channel estimation.
  • the present invention further provides an evolved base station that implements carrier management, including a parameter classification holding unit, a parameter deactivation unit, and a parameter release unit, where:
  • the parameter deactivation unit is configured to batch deactivate parameters configured to the user equipment (UE), including scheduling part parameter deactivation and channel quality part parameter deactivation, where the scheduling part parameter deactivation is: A parameter related to the carrier channel estimation in the parameter is activated, where the channel quality part parameter deactivation is: deactivating a parameter related to the carrier channel estimation in the parameter;
  • the parameter classification holding unit is configured to: All parameters are divided into public parameters and special parameters, and are saved separately;
  • the parameter release unit is configured to release the carrier parameters configured to the UE in batches according to the content saved by the parameter classification holding unit, including release of the dedicated parameters and release of the public parameters.
  • the carrier management method of the present invention solves the implementation complexity of the carrier addition and deletion process by improving the carrier addition and deletion process, reduces system overhead, improves carrier management flexibility, saves UE power consumption, and system spectrum. effectiveness.
  • FIG. 1 is a schematic diagram of a UE accessing an eNB defined by the LTE standard
  • Embodiment 1 of the present invention is a schematic flow chart of Embodiment 1 of the present invention.
  • Embodiment 2 of the present invention is a schematic flow chart of Embodiment 2 of the present invention.
  • FIG. 5 is a schematic flow chart of Embodiment 4 of the present invention.
  • Figure 6 is a schematic flow chart of Embodiment 5 of the present invention.
  • Figure 7 is a schematic flow chart of Embodiment 6 of the present invention.
  • Figure 8 is a flow chart showing the seventh embodiment of the present invention.
  • the configuration of the carrier parameter includes: dividing all the parameters of a certain carrier into a common parameter and a dedicated parameter.
  • the evolved base station (eNB) batches according to the classified type.
  • the division rules of the common parameters and the dedicated parameters are the same or different.
  • the parameters related to the uplink and downlink carrier channel estimation in the dedicated parameter are divided into channel quality specific parameters, and the remaining parameters are divided into scheduling specific parameters; the eNB separately uses the common parameters of the carrier, channel quality specific parameters, and A scheduling specific parameter is configured for the UE.
  • the activation of the carrier parameters includes: the eNB activates parameters configured to the UE in batches, including channel quality. Partial parameter activation and scheduling partial parameter activation, wherein the channel quality part parameter activation refers to activating parameters related to carrier channel estimation in the parameter, and the scheduling part parameter activation refers to activating the parameter and carrier channel estimation. Unrelated parameters.
  • Deactivating the carrier parameter includes: in the process of instructing the UE to deactivate the carrier, the eNB instructs the UE to perform parameter deactivation in batches, including scheduling part parameter deactivation and channel quality part parameter deactivation, where the scheduling part parameter goes Activation refers to deactivating parameters in the parameters that are not related to carrier channel estimation, and deactivating the channel quality portion parameters refers to deactivating parameters related to carrier channel estimation in the parameters.
  • the release of the carrier parameters includes: The eNB instructs the UE to release the configured carrier parameters in batches, including the release of the dedicated parameters and the release of the common parameters.
  • the release of the dedicated parameter further comprises release of channel quality specific parameters and release of scheduling specific parameters.
  • the carrier parameter configuration process and the carrier activation process together constitute a carrier addition process; wherein the carrier parameter configuration process is divided into two parts according to a certain principle: a common parameter configuration process and a dedicated parameter configuration process; the carrier activation process is divided into channel quality Part of the parameter activation (hereinafter referred to as channel quality part activation) and scheduling part parameter activation (hereinafter referred to as scheduling part activation).
  • channel quality part activation channel quality Part of the parameter activation
  • scheduling part parameter activation hereinafter referred to as scheduling part activation
  • the deactivation process of the carrier and the parameter configuration release process of the carrier together constitute a carrier deletion process; wherein, the deactivation process of the carrier is also correspondingly divided into channel quality part parameter deactivation (hereinafter referred to as channel quality part deactivation) and scheduling part parameters Deactivation (hereinafter referred to as scheduling part deactivation);
  • the parameter configuration release process of the carrier is also divided into a common parameter configuration release process and a dedicated parameter configuration release process.
  • the carrier parameter When the channel quality partial activation and scheduling partial activation are completed, the carrier parameter is considered to be active; when the channel quality partial deactivation and the scheduling partial deactivation are completed, the carrier parameter is considered to be deactivated.
  • the advantage of dividing the parameters in this way is that the dedicated parameters belong to parameters that can be dynamically adjusted and related to the occupation of common resources, and the independence of the parameters can make the carrier management more flexible and the efficiency of resource management improved.
  • the advantages of dividing the activation in this way are as follows: 1. Before the eNB performs scheduling, the channel estimation is completed in advance, so that after the carrier is fully activated, the eNB can immediately start scheduling on the target CC (Component Carrier) without worrying about the channel. Estimated traffic loss due to inaccuracy. 2. Before the scheduling part is activated, the eNB may further determine whether the target carrier is suitable for activation according to the channel estimation. If the channel estimation result is poor, the eNB may select other carriers.
  • Target CC Component Carrier
  • the division principle of the public parameter and the dedicated parameter is one of the following:
  • the network side determines that the parameter does not need to be changed within a preset time range (the range can be set to a longer time range) according to certain principles, it is divided into common parameters; otherwise, it is divided into dedicated parameters; These principles may include: Whether the network load exceeds a certain threshold; whether the small-area interference exceeds a certain threshold;
  • the parameter is related to the allocation of any one of the following channel resources of the carrier, it is divided into dedicated parameters, otherwise it is divided into common parameters: an uplink control channel, an uplink shared channel;
  • the parameter belongs to a parameter in the system information sent by the broadcast channel, it is divided into a common parameter, otherwise it is divided into a dedicated parameter.
  • the division of the public parameters and the dedicated parameters may be non-fixed, that is, in the process of configuring different carrier parameters, the division of the public parameters and the dedicated parameters may employ different division principles. This can increase the flexibility of management, because for some parameters, some parameters do not need to be changed for the eNB, and in some cases it is possible to change, then these parameters can be divided into common parameters in some cases. In some cases, it is divided into special parameters.
  • the dedicated parameter may be further divided into a channel quality specific parameter and a scheduling specific parameter; the channel quality specific parameter refers to a parameter related to the uplink and downlink carrier channel estimation in the dedicated parameter, and the scheduling specific parameter refers to a dedicated parameter and Upper and lower carrier channel estimation independent parameters.
  • the channel quality partial activation refers to parameters (including common parameters and dedicated parameters) related to uplink carrier channel estimation and downlink carrier channel estimation among all parameters of the UE enabled carrier, that is, parameters related to carrier channel estimation are channels. Part of the quality parameters.
  • channel quality partial activation refers to enabling all parameters related to transmitting SRS (Sounding Reference Signal) and related to transmitting CQI (Channel Quality Indicator). All the parameters, and start sending SRS and CQI;
  • the scheduling part activation refers to all parameters except the channel quality part activation in the parameters of the UE enabled carrier, and starts related uplink transmission and downlink reception.
  • the deactivation refers to the inverse of the activation.
  • the parameter reconfiguration is performed according to the content of the message.
  • the four sub-processes of the carrier increasing process are adjacent two or more Sub-processes can also be combined together as a process (to save on signaling overhead and reduce latency).
  • the eNB may complete one of the following operations by using a message: configuration of the common parameter, configuration of a dedicated parameter, and activation of a channel quality part parameter; configuration of the dedicated parameter and activation of a channel quality part parameter; configuration of the dedicated parameter , channel quality part parameter activation and scheduling part of the parameter activation.
  • the dedicated parameters are further divided into channel quality specific parameters and scheduling specific parameters
  • the eNB may complete through a message: configuration of channel quality specific parameters and channel quality part parameter activation, and/or configuration and scheduling part of scheduling dedicated parameters The parameter is activated.
  • the four sub-processes of the carrier deletion process are adjacent Two or more sub-processes can also be combined together as one process (to save signaling overhead and reduce latency).
  • the eNB may complete one of the following operations by using a message: the scheduling part parameter deactivation, the channel quality part parameter deactivation, and the release of the dedicated parameter; the channel quality part parameter deactivation and the release of the dedicated parameter; the channel The mass part of the parameter is deactivated, the release of the dedicated parameter, and the release of the common parameter.
  • the dedicated parameters are further divided into channel quality specific parameters and scheduling specific parameters
  • the eNB may accomplish this by a message: scheduling partial parameter deactivation and scheduling release of dedicated parameters, and/or channel quality partial parameter deactivation and Release of channel quality specific parameters.
  • the following carrier management methods may be generated:
  • the eNB notifies the UE to initiate random access or enforcement. Perform other uplink synchronization methods; or inform the broadcast messages which carriers are not synchronized with each other, and the UE determines whether to perform the uplink synchronization process on the target carrier; if the target carrier and the existing carrier of the UE are synchronized, then the UE There is no need to perform the uplink synchronization process.
  • Carrier management method 1
  • the adding process includes the following steps:
  • Step 1A-1 the eNB sends the public parameter of the target carrier to be added to the UE;
  • the sending manner may be through a broadcast channel (notifying the UE to read the configuration parameters sent on the broadcast channel), or may be sent through a carrier that has established a connection with the UE.
  • Step 1A-2 The UE receives a common parameter of the target carrier.
  • Step 1A-3 the eNB sends the dedicated parameter of the target carrier to be added to the UE;
  • the manner in which the dedicated parameters are transmitted may be sent by other carriers that have established a connection with the UE.
  • Step 1A-4 After receiving the dedicated parameters of the target carrier, the UE performs activation of the target carrier parameters, including channel quality part activation and scheduling part activation.
  • the eNB and the UE may agree to perform activation of the target carrier parameter as long as the UE receives the dedicated parameter sent by the eNB; or the eNB may notify the UE to activate the target carrier parameter by setting the activation indication, that is, the eNB sends the dedicated parameter to the UE.
  • the message carries an activation indication, and the UE performs activation of the target carrier parameter according to the activation indication.
  • the UE If the UE does not obtain the uplink synchronization on the target carrier, the UE performs the random access or other uplink synchronization method first. After obtaining the uplink synchronization, the UE performs the channel quality partial activation and the scheduling part activation on the target carrier. .
  • the UE obtains uplink synchronization on the target carrier when receiving the dedicated parameter of the target carrier, the UE activates the target carrier, and the process of adding the carrier is completed.
  • the process includes the following steps:
  • Step 1B-1 the eNB notifies the UE to deactivate the target carrier.
  • Step 1B-2 after receiving the notification sent by the eNB, the UE deactivates the target carrier (including channel quality part deactivation and scheduling part deactivation), and releases the dedicated parameter of the carrier;
  • Step 1B-3 the eNB notifies the UE to completely delete the carrier
  • Step 1B-4 After receiving the notification from the eNB, the UE releases the public parameters of the carrier.
  • the adding process includes the following steps:
  • Step 2A-1 the eNB sends all parameters of the target carrier to be added to the UE;
  • Step 2A-2 After receiving all parameters of the target carrier sent by the eNB, the UE performs channel quality part activation;
  • the UE and the eNB may agree that the channel quality partial activation is performed as long as the UE receives all the parameters. Or the eNB sends an indication in the message to indicate that the UE performs channel quality partial activation after receiving all parameters.
  • Step 2A-3 the eNB notifies the UE to perform scheduling part activation
  • Step 2A-4 the UE performs scheduling partial activation according to the indication of the eNB, and the adding process of the carrier is redundant.
  • the process includes the following steps:
  • Step 2B-1 the eNB notifies the UE to perform partial scheduling deactivation on the target carrier.
  • Step 2B-2 after the UE receives the notification, the scheduling part is deactivated;
  • Step 2B-3 the eNB notifies the UE to completely delete the carrier
  • Step 2B-4 After receiving the indication from the eNB, the UE performs partial deactivation of the channel quality on the target carrier, and releases all parameters of the target carrier.
  • Carrier Management Method 3 If the UE has established a connection with the eNB on one or more carriers, when the eNB wants to add one or more carriers to the UE, the adding process includes the following steps:
  • Step 3A-1 the eNB sends all parameters of the target carrier to be added to the UE;
  • the transmission method may be a method of transmitting through a carrier that has established a connection with the UE, or a method of transmitting a broadcast channel (notifying the UE to read configuration parameters transmitted on the broadcast channel).
  • Step 3A-2 the UE receives all parameters of the target carrier sent by the eNB;
  • Step 3A-3 the eNB notifies the UE to perform channel quality partial activation on the target carrier;
  • Step 3A-4 the UE performs channel quality partial activation on the target carrier;
  • the random access or other uplink synchronization method is performed first, and after obtaining the uplink synchronization, the UE performs the channel quality partial activation on the target carrier.
  • Step 3A-5 the eNB notifies the UE to perform scheduled partial activation on the target carrier
  • Step 3A-6 After receiving the notification from the eNB, the UE performs scheduling part activation, and the process of adding the carrier is completed.
  • the process includes the following steps:
  • Step 3B-1 the eNB notifies the UE to perform partial scheduling deactivation on the target carrier.
  • Step 3B-2 the UE performs a scheduling partial deactivation operation after receiving the notification from the eNB;
  • Step 3B-3 the eNB notifies the UE to perform channel quality partial deactivation on the target carrier;
  • Step 3B-4 the UE performs the notification of the eNB, and then performs The channel quality part is deactivated; in step 3B-5, the eNB notifies the UE to completely delete the target carrier;
  • Step 3B-6 the UE releases all parameters of the target carrier.
  • the adding process includes the following steps:
  • Step 4A-1 the eNB sends the public parameter of the target carrier to be added to the UE;
  • the sending mode may be sent by using a carrier that has established a connection with the UE, or combined The way the broadcast channel (notifies the UE to read the configuration parameters sent on the broadcast channel).
  • Step 4A-2 the UE receives a common parameter of the target carrier sent by the eNB;
  • Step 4A-3 the eNB sends the dedicated parameter of the target carrier to be added to the UE;
  • the transmission method may be to be transmitted through a carrier that has established a connection with the UE.
  • Step 4A-4 the UE receives a dedicated parameter of the target carrier sent by the eNB;
  • Step 4A-5 the eNB notifies the UE to perform channel quality partial activation on the target carrier.
  • Step 4A-6 the UE performs channel quality partial activation on the target carrier according to the notification of the eNB; if the UE does not obtain uplink synchronization on the target carrier, the first After performing random access or other uplink synchronization methods, after obtaining uplink synchronization, the UE performs partial channel quality activation on the target carrier.
  • Step 4A-7 the eNB notifies the UE to perform scheduled partial activation on the target carrier.
  • Step 4A-8 after the UE receives the notification, the scheduling part is activated, and the process of adding the carrier is completed.
  • the process includes the following steps:
  • Step 4B-1 the eNB notifies the UE to perform partial scheduling deactivation on the target carrier.
  • Step 4B-2 the UE performs a scheduling partial deactivation operation after receiving the notification from the eNB;
  • Step 4B-3 the eNB notifies the UE to perform channel quality partial deactivation on the target carrier;
  • Step 4B-4 the UE performs the notification of the eNB, and then performs Channel quality partial deactivation operation;
  • step 4B-5 the eNB notifies the UE to release the dedicated parameter of the target carrier;
  • Step 4B-6 the UE releases the dedicated parameter of the target carrier after receiving the notification of the eNB;
  • Step 4B-7 the eNB notifies the UE to completely delete the target carrier;
  • Step 4B-8 After receiving the notification of the eNB, the UE releases the public parameter of the target carrier.
  • Carrier Management Method 5 After receiving the notification of the eNB, the UE releases the public parameter of the target carrier.
  • the adding process includes the following steps:
  • Step 5A-1 the eNB sends the public parameter of the target carrier to be added to the UE;
  • the sending manner may be through a broadcast channel (notifying the UE to read the configuration parameters sent on the broadcast channel), or may be sent through a carrier that has established a connection with the UE.
  • Step 5A-2 the UE receives a common parameter of the target carrier
  • Step 5A-3 The eNB sends the dedicated parameter of the target carrier to be added to the UE, and notifies the UE to perform channel quality partial activation.
  • Step 5A-4 The UE receives a dedicated parameter of the target carrier sent by the eNB, and performs channel quality part activation;
  • the random access or other uplink synchronization method is performed first, and after obtaining the uplink synchronization, the UE performs the channel quality partial activation on the target carrier.
  • Step 5A-5 the eNB notifies the UE to perform scheduling partial activation
  • Step 5A-6 After receiving the notification from the eNB, the UE performs scheduling part activation, and the process of adding the carrier is completed.
  • the process includes the following steps:
  • Step 5B-1 the eNB notifies the UE to perform partial scheduling deactivation on the target carrier.
  • Step 5B-2 after receiving the notification of the eNB, the UE performs a scheduling part deactivation operation
  • Step 5B-3 the eNB notifies the UE to perform channel quality partial deactivation on the target carrier, and releases the dedicated parameter of the target carrier;
  • Step 5B-4 after receiving the notification from the eNB, the UE performs the operation of deactivating the channel quality part and releasing the target parameter of the target carrier;
  • Step 5B-5 the eNB notifies the UE to completely delete the target carrier.
  • Step 5B-6 After receiving the notification of the eNB, the UE releases the public parameter of the target carrier.
  • the adding process includes the following steps:
  • Step 6A-1 the eNB sends the public parameter of the target carrier to be added to the UE;
  • the transmission method may be a method of transmitting through a carrier that has established a connection with the UE, or a method of transmitting a broadcast channel (notifying the UE to read configuration parameters transmitted on the broadcast channel).
  • Step 6A-2 the UE receives a common parameter of the target carrier sent by the eNB;
  • Step 6A-3 the eNB sends the dedicated parameter of the target carrier to be added to the UE;
  • the transmission method may be to be transmitted through a carrier that has established a connection with the UE.
  • Step 6A-4 the UE receives a dedicated parameter of the target carrier sent by the eNB;
  • Step 6A-5 the eNB notifies the UE to activate the target carrier.
  • Step 6A-6 The UE activates the target carrier according to the notification of the eNB, including channel quality part activation and scheduling part activation.
  • the UE does not obtain the uplink synchronization on the target carrier at this time, the random access or other uplink synchronization method is performed first. After the uplink synchronization is obtained, the UE activates the target carrier again, and after the activation is completed, the carrier addition process is completed.
  • the process includes the following steps:
  • Step 6B-1 the eNB notifies the UE to deactivate the target carrier.
  • Step 6B-2 the UE performs a deactivation operation of the target carrier parameter after receiving the notification from the eNB;
  • Step 6B-3 the eNB notifies the UE to release the dedicated parameter of the target carrier;
  • Step 6B-4 the UE releases the dedicated parameter of the target carrier after receiving the notification of the eNB;
  • Step 6B-5 the eNB notifies the UE to completely delete the target carrier;
  • Step 6B-6 After receiving the notification of the eNb, the UE releases the public parameter of the target carrier.
  • the adding process includes the following steps:
  • Step 7A-1 the eNB sends the public parameter of the target carrier to be added to the UE;
  • the transmission method may be a method of transmitting through a carrier that has established a connection with the UE, or a method of transmitting a broadcast channel (notifying the UE to read configuration parameters transmitted on the broadcast channel).
  • Step 7A-2 the UE receives a common parameter of the target carrier sent by the eNB;
  • Step 7A-3 The eNB sends the channel quality specific parameter of the target carrier to be added to the UE, and notifies the UE to perform channel quality partial activation;
  • the transmission method may be to be transmitted through a carrier that has established a connection with the UE.
  • Step 7A-4 The UE receives a channel quality specific parameter of the target carrier sent by the eNB, and performs channel quality partial activation.
  • Step 7A-5 the eNB sends a scheduling specific parameter of the target carrier to be added to the UE, and notifies the UE to perform scheduling part activation;
  • the transmission method may be to be transmitted through a carrier that has established a connection with the UE.
  • Step 7A-6 The UE receives the scheduling specific parameter of the target carrier sent by the eNB, and performs scheduling partial activation, and the process of adding the carrier is completed.
  • the process includes the following steps:
  • Step 7B-1 the eNB notifies the UE to perform partial scheduling deactivation on the target carrier.
  • Step 7B-2 after receiving the notification of the eNB, the UE performs a scheduling partial deactivation operation and releases the scheduling dedicated parameter;
  • Step 7B-3 the eNB notifies the UE to perform channel quality partial deactivation on the target carrier;
  • Step 7B-4 after receiving the notification from the eNB, the UE performs a channel quality partial deactivation operation and releases the channel quality specific parameter;
  • Step 7B-5 the eNB notifies the UE to completely delete the target carrier
  • Step 7B-6 After receiving the notification of the eNB, the UE releases the public parameter of the target carrier.
  • the carrier addition process and the carrier deletion process in each of the above carrier management methods may be used in any combination.
  • the scheduling part activation may also be performed before the channel quality part activation.
  • the eNB and the UE in the following embodiments belong to the LTE-Advanced system and support carrier aggregation technology.
  • the frequency division duplex (FDD) mode is used.
  • Time Division Duplex (TDD) mode can also be used.
  • the common parameters of the carrier mainly include, for example, a carrier frequency, a downlink carrier bandwidth (dl-Bandwidth), an uplink carrier frequency (ul-CarrierFreq), and an uplink carrier bandwidth (ul-Bandwidth). , cell reselection information (cellReselectionlnfoCommon) and other parameters;
  • the dedicated parameters of the carrier mainly include, for example, the Sounding reference signal hopping bandwidth (srs-HoppingBandwidth), the Sounding reference signal frequency domain position (SoundingRS-UL-ConfigDedicated ->freqDomainPosition), the CQI parameter Westself information (CQI-ReportConfig), and the uplink.
  • Parameters such as dedicated parameters of the power control (uplinkPowerControlDedicated) and discontinuous reception configuration (drx-Config); the parameters described here can be referred to 3GPP TS 36.331 V8.6.0.
  • the division of the above parameters is only one of the implementation examples. According to the invention of the present invention, there may be other division methods, and in different carrier parameter configuration processes, the division of parameters may be fixed or adjusted.
  • the UE and the eNB have established an RRC connection, and the eNB configures two pairs of uplink and downlink carriers for the UE, and the downlink carriers are DL CCl (downlink component carrier) and DL CC2, and the corresponding uplink carriers are UL.
  • CC1 Uplink Component Carrier
  • UL CC2 Uplink Component Carrier
  • the eNB needs to add a pair of uplink and downlink carriers to the UE due to the increased traffic demanded by the UE, and set it as DL CC3 and UL CC3.
  • DL CC3 and DL CC1 and DL CC2 are not synchronized, and the UE needs to initiate random access in UL CC3 to obtain uplink synchronization.
  • This information is included in the dedicated parameter configuration of DL CC3 and UL CC3.
  • the carrier management method of this embodiment uses the above-mentioned carrier management method 1.
  • the process of adding a carrier by the UE in this embodiment is as shown in FIG. 2, and the steps are as follows:
  • Step 201 The eNB sends the public parameters of the DL CC3 and the UL CC3 to the UE through the DL CC1 or the DL CC2.
  • Step 202 The eNB uses dedicated parameters of DL CC3 and UL CC3 through DL CC1 or DL CC2. The number is sent to the UE, and the UE is notified to activate;
  • Step 203 The UE determines whether to initiate random access in the UL CC3 according to the specific parameter.
  • the UE since the DL CC3 and the DL CC1 and the DL CC2 are not synchronized, the UE needs to initiate random access in the UL CC3 to obtain uplink synchronization.
  • the judgment information of whether or not to initiate random access is included in the dedicated parameters of DL CC3 and UL CC3.
  • Step 204 The UE initiates random access in the UL CC3 to complete uplink synchronization.
  • Step 205 The UE activates the DL CC3 and the UL CC3 to complete the carrier addition process.
  • the UE and the eNB have established an RRC connection, and the eNB configures two pairs of uplink and downlink carriers for the UE, and the downlink carriers are DL CC1 and DL CC2, and the corresponding uplink carriers are UL CC1 and UL CC2, respectively.
  • DL CC3 and DL CCl are synchronized and this information is included in the dedicated parameter configuration of DL CC3 and UL CC3.
  • the carrier management of this embodiment uses the above-mentioned carrier management method 2.
  • the process of adding a carrier by the UE in this embodiment is as shown in FIG. 3, and the steps are as follows:
  • Step 301 The eNB determines whether the UE initiates random access in the UL CC3. Because the DL CC3 and the DL CC1 are synchronized, the UE does not need to initiate random access.
  • Step 302 The eNB sends all parameters of the DL CC3 and the UL CC3 to the UE through the DL CC1 or the DL CC2, and requests the UE to perform channel quality partial activation.
  • Step 303 The UE performs channel quality partial activation on the DL CC3 and the UL CC3.
  • Step 304 The eNB notifies the UE to perform scheduling part activation in the DL CC3 and the UL CC3.
  • Step 305 The UE performs scheduling part activation on the DL CC3 and the UL CC3 to complete the carrier adding process.
  • the UE and the eNB have established an RRC connection, and the eNB configures two pairs of uplink and downlink carriers for the UE, and the downlink carriers are DL CC1 and DL CC2, and the corresponding uplink carriers are UL CC1 and UL CC2.
  • This embodiment provides an example in which the eNB adjusts the activation and deactivation of the carrier in real time according to changes in UE traffic.
  • the parameters are not released, so that when the eNB needs to use the target carrier again, the carrier can be reactivated quickly, which greatly reduces scheduling delay and signaling overhead.
  • This is a carrier management method according to the present invention. An example of flexible use. Similar applications are used in other embodiments.
  • the eNB needs to reduce a pair of uplink and downlink carriers for the UE due to the decrease of the UE traffic demand, and set it as DL CC2 and UL CC2.
  • the carrier management method of the embodiment uses the above-mentioned carrier management method 3.
  • the flow of this embodiment is shown in FIG. 4, and the steps are as follows:
  • Step 401 The eNB determines that the UE can temporarily stop using a pair of uplink and downlink carriers DL CC2 and UL CC2 because the UE traffic demand decreases.
  • Step 402 The eNB notifies the UE to perform scheduling partial deactivation on the DL CC2 and the UL CC2.
  • Step 403 The UE performs scheduling part deactivation on the DL CC2 and the UL CC2.
  • Step 404 After a period of time, the UE generates a new traffic demand, and sends a new buffer status report to the eNB.
  • Step 405 The eNB determines that the existing DL CC1 and the UL CC1 are insufficient to meet the traffic demand of the UE according to the buffer status report of the UE, and needs to reactivate the DL CC2 and the UL CC2.
  • Step 406 The eNB notifies the UE to perform scheduling part activation on the DL CC2 and the UL CC2.
  • Step 407 The UE performs scheduling part activation on the DL CC2 and the UL CC2 to complete the carrier adding process.
  • the eNB since the eNB does not instruct the UE to release the target carrier, when activated, the eNB may directly instruct the UE to perform activation of the target carrier. And since the UE only completes the scheduling part to be deactivated, only the scheduling part parameters are activated when activated.
  • the UE and the eNB have established an RRC connection, and the eNB configures two pairs of uplink and downlink carriers for the UE, and the downlink carriers are DL CC1 and DL CC2, and the corresponding uplink carriers are UL CC1 and UL CC2.
  • This embodiment provides an example in which the eNB adjusts the activation and deactivation of the carrier in real time according to the change of the UE traffic, and the configuration and release configuration.
  • the eNB needs to temporarily reduce the use of a pair of uplink and downlink carriers for the UE, and set it as DL CC2 and UL CC2. However, considering that the UE may still have traffic demand for a period of time, the eNB does not It is planned to let the UE delete DL CC2 and UL CC2.
  • the carrier management method of the present embodiment uses the above-mentioned carrier management method 4.
  • the flow of this embodiment is shown in FIG. 5, and the steps are as follows:
  • Step 502 The eNB notifies the UE to perform scheduling partial deactivation on the DL CC2 and the UL CC2.
  • Step 503 The UE performs scheduling partial deactivation on the DL CC2 and the UL CC2.
  • Step 504 The eNB notifies the UE to perform channel quality partial deactivation on the DL CC2 and the UL CC2.
  • Step 505 The UE performs channel quality partial deactivation on the DL CC2 and the UL CC2.
  • Step 506 The eNB notifies the UE to release the dedicated DL CC2 and the UL CC2.
  • Step 507 The UE releases the dedicated parameters of the DL CC2 and the UL CC2.
  • no public parameters are released, which is one of the special applications.
  • a carrier is not working, there are three methods: (1) to deactivate the carrier, the advantage of this method is that the carrier can be quickly re-operated; (2) deactivate and release the dedicated parameters, the benefit of this method is The control channel resources can be given up for other users to use; (3) Deactivate and release all parameters.
  • Step 508 After the period of time, the UE generates a new traffic request, and the UE sends a scheduling request to the eNB through the UL CC1. After receiving the scheduling signaling of the eNB, the UE sends a new buffer status report to the eNB.
  • Step 509 The eNB determines that the existing DL CC1 and the UL CC1 are insufficient to meet the traffic demand of the UE according to the buffer status report of the UE, and needs to re-enable the DL CC2 and the UL CC2.
  • Step 510 The eNB sends the dedicated parameters of the DL CC2 and the UL CC2 to the UE through the DL CC1.
  • Step 511 The eNB notifies the UE to perform channel quality partial activation on the DL CC2 and the UL CC2.
  • Step 512 The UE performs channel quality partial activation on the DL CC2 and the UL CC2.
  • Step 513 The eNB notifies the UE to perform scheduling partial activation on the DL CC2 and the UL CC2.
  • Step 514 The UE performs scheduling partial activation on the DL CC2 and the UL CC2.
  • the UE and the eNB have established an RRC connection, and the eNB configures one pair of uplink and downlink carriers for the UE, and the downlink carrier is DL CC1, and the corresponding uplink carrier is UL CC1.
  • This embodiment provides that the eNB prepares for the carrier increase of the UE according to the load change of the existing carrier, so as to reduce the scheduling delay, and perform channel estimation in advance to improve the initial throughput of the UE on the newly added carrier.
  • CC1 and UL CC1 will not meet the throughput requirements of the UE. Therefore, it is necessary to add a pair of uplink and downlink carriers to the UE in advance, and set it as DL CC2 and UL CC2, and DL CC2 and DL CC1 are synchronized.
  • the carrier management method of this embodiment uses the above-mentioned carrier management method 5.
  • the flow of this embodiment is shown in FIG. 6.
  • the steps are as follows: Step 601: Since the load of DL CC1 and UL CC1 continues to increase, the eNB determines that the UE is It is necessary to add a pair of uplink and downlink carriers in a short time;
  • Step 602 The eNB sends the public parameters of the DL CC2 and the UL CC2 to the UE.
  • Step 603 The eNB sends the dedicated parameters of the DL CC2 and the UL CC2 to the UE, and notifies the UE to perform channel quality partial activation.
  • Step 604 Since the DL CC2 and the DL CC1 are synchronized, the UE does not need to perform uplink synchronization again.
  • the UE performs channel quality partial activation on DL CC2 and UL CC2;
  • Step 605 After the period of time, the eNB determines that the DL CCl and the UL CCl cannot meet the traffic demand of the UE, and needs to fully enable the DL CC2 and the UL CC2 at once;
  • Step 606 The eNB notifies the UE to perform scheduling part activation on the DL CC2 and the UL CC2.
  • Step 607 The UE performs scheduling part activation on the DL CC2 and the UL CC2 to complete the carrier adding process.
  • Example 6 It is assumed that the UE and the eNB have established an RRC connection, and the eNB configures one pair of uplink and downlink carriers for the UE, and the downlink carrier is DL CC1, and the corresponding uplink carrier is UL CC1.
  • This example is an example in which the eNB adds a pair of carriers to the UE according to the traffic demand of the UE, and then causes the UE to delete a pair of carriers because the data service of the UE ends.
  • the eNB determines that the DL CC1 and the UL CC1 cannot meet the throughput requirement of the UE due to the increase of the traffic demand of the UE. Therefore, it is necessary to add a pair of uplink and downlink carriers to the UE, and set it as DL CC2 and UL CC2, and DL CC2 and DL CC1 is synchronous.
  • the carrier management method of the present embodiment uses the above-mentioned carrier management method 6.
  • the flow of this embodiment is shown in FIG. 7.
  • the steps are as follows: Step 701: The eNB determines that the UE needs to add a pair of upper and lower nodes due to the increased traffic demand of the UE.
  • Line carrier
  • Step 702 The eNB sends the public parameters of the DL CC2 and the UL CC2 to the UE.
  • Step 703 The eNB sends the dedicated parameters of the DL CC2 and the UL CC2 to the UE.
  • Step 704 The eNB notifies the UE to activate DL CC2 and UL CC2.
  • Step 705 Since the DL CC2 and the DL CC1 are synchronized, the UE does not need to perform uplink synchronization, and the UE performs activation on the DL CC2 and the UL CC2.
  • Step 706 After the period of time, the data service of the UE ends, and the eNB determines that the UE does not have new service requirements for a long time, so the DL CC2 and the UL CC2 may be deleted.
  • Step 707 The eNB notifies the UE to delete the DL CC2 and the UL CC2.
  • Step 708 The UE deactivates the DL CC2 and the UL CC2 after receiving the notification, and releases all parameters.
  • the UE and the eNB have established an RRC connection, and the eNB configures one pair of uplink and downlink carriers for the UE, and the downlink carrier is DL CC1, and the corresponding uplink carrier is UL CC1.
  • This embodiment provides an example in which an eNB adds a pair of carriers to a UE according to an increase in traffic demand of the UE.
  • eNB determine that DL CC1 and UL CC1 will not be able to increase the traffic demand of the UE.
  • the throughput requirement of the UE is met, so it is necessary to add a pair of uplink and downlink carriers to the UE, and set it as DL CC2 and UL CC2, and DL CC2 and DL CC1 are synchronized.
  • the carrier management method of the present embodiment uses the above-mentioned carrier management method 7.
  • the flow of this embodiment is as shown in FIG. 8.
  • the steps are as follows: Step 801: The eNB determines that the UE needs to add a pair of upper and lower as the UE traffic demand increases.
  • Line carrier
  • Step 802 The eNB sends the public parameters of the DL CC2 and the UL CC2 to the UE.
  • Step 803 The eNB sends the channel quality specific parameters of the DL CC2 and the UL CC2 to the UE.
  • Step 804 After the UE receives the channel quality specific parameter, the UE does not need to perform uplink synchronization again because the DL CC2 and the DL CC1 are synchronized.
  • DL CC2 and UL CC2 perform channel quality partial activation;
  • Step 805 The eNB sends scheduling specific parameters of the DL CC2 and the UL CC2 to the UE.
  • Step 806 After receiving the scheduling-specific parameters, the UE performs scheduling part activation on the DL CC2 and the UL CC2. At this point, the adding process of the DL CC2 and the UL CC2 is completed.
  • An eNB implementing carrier management includes a parameter classification holding unit, a parameter configuration unit, and a parameter activation unit, where:
  • the parameter classification and saving unit is configured to divide all parameters of a carrier into common parameters and dedicated parameters, and save them separately;
  • the parameter configuration unit is configured to perform parameter configuration of the carrier in batches according to the content saved by the parameter classification holding unit, including configuration of a common parameter and configuration of a dedicated parameter; the parameter activation unit is set to, batch Activating parameters configured for the UE, including channel quality part parameter activation and scheduling part parameter activation, where the channel quality part parameter activation refers to activating parameters related to carrier channel estimation in the parameter, the scheduling part parameter Activation refers to activating parameters in the parameters that are not related to carrier channel estimation.
  • An eNB implementing carrier management includes a parameter classification holding unit, a parameter deactivation unit, and a parameter release unit, where:
  • the parameter deactivation unit is configured to deactivate a parameter configured to the UE in batch, including scheduling part parameter deactivation and channel quality part parameter deactivation, where the scheduling part parameter Deactivation refers to deactivating parameters in the parameters that are not related to carrier channel estimation, and deactivating the channel quality part parameters refers to deactivating parameters related to carrier channel estimation in the parameters;
  • the parameter classification and saving unit is configured to divide all parameters of a carrier into common parameters and dedicated parameters, and save them separately;
  • the parameter release unit is configured to, according to the content saved by the parameter classification and holding unit, release the carrier parameters configured to the UE in batches, including release of the dedicated parameters and release of the public parameters.
  • the method of the present invention is very flexible, and the configuration of parameters and the activation of parameters can be used separately, which can meet the different needs of the system.
  • the carrier management method and the evolved base station in the multi-carrier system provided by the present invention improve the implementation complexity of the carrier addition and deletion process by improving the carrier addition and deletion process, and reduce the system overhead and improve the system overhead.
  • Carrier management flexibility saves UE power consumption.

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Description

一种多载波系统下的载波管理方法和演进型基站
技术领域
本发明涉及无线通信技术领域, 特别涉及多载波系统下的载波管理方法 和演进型基站。
背景技术
第三代移动通信长期演进 ( Long Term Evolution, 简称为 LTE )系统的演 进型通用陆地无线接入网 ( Evolved Universal Terrestrial Radio Access Network, 简称为 E-UTRAN ) 中, 上行链路的数据通过物理上行链路共享信 道(Physical Uplink Shared Channel, 简称 PUSCH )传输。 由演进型基站 ( Evolved NodeB, 简称 eNB )分配上行链路无线资源给每个用户终端( User Equipment, 简称 UE ) 。 E-UTRAN釆用的接入技术是 OFDM ( Orthogonal Frequency Division Multiplexing, 正交频分复用 )技术, E-UTRAN系统的无 线资源管理和第二代移动通信系统相比, 具有大带宽、 多时间进程的特点, 其无线资源是以时间和频率两维出现的, 能够承载的用户数量大大增加。
LTE系统是单载波系统, UE完成和 eNB的连接需要以下几个步骤, 流 程参见图 1 :
首先, UE需要获得下行载波的下行同步(步骤 101 ) , 并通过读取广播 信道, 获得系统信息 (步骤 102 ) 。 所述的系统信息主要包括下行载波的系 统带宽、 系统帧号、 小区接入信息、 公共共享信道信息、 服务小区的小区重 选信息、邻区同频和异频小区的小区重选信息等。 所述这些系统信息均是 UE 维持在 RRC— IDLE ( Radio Resource Control, 无线资源控制; IDLE, 空闲; RRC— IDLE即 RRC空闲 )状态所需的必要信息。
其次, UE需要发起随机接入过程, 以完成和 eNB的上行链路载波同步
(步骤 103 ) ;
最后, eNB给 UE发送 RRC配置消息 (步骤 104 ) , 所述的配置消息中 包含 RRC无线资源专用配置信息, 即 MAC ( Media Access Control, 媒体接 入控制)层配置信息、 SPS ( Semi-Persistent Scheduling, 半持久调度)配置信 息、 专用物理信道配置信息、 逻辑信道配置信息、 公共控制信道配置信息等。 所述这些配置信息均是 UE维持在 RRC— CON ECTED( CONNECTED,连接; RRC— CONNECTED即 RRC连接 )状态所需的必要信息。
完成上述步骤后, UE即完成了和 eNB的连接, 可以接收 eNB下发的资 源调度指令以进行通讯了。
高级长期演进 ( LTE-Advanced ) 是 3GPP ( the 3rd Generation Partner Project , 第三代合作伙伴计划 ) 组织为 了满足 ITU ( International Telecommunication Union,国际电信联盟 ) IMT- Advanced ( International Mobile Telecommunication- Advanced , 先进的国际移动通讯) 的要求而推出的标准。 LTE-Advanced系统是在 LTE版本( release ) 8系统基础上的一个演进版本, 它引入了很多新技术来满足 IMT-Advanced的基本需求,其中最重要的一项技 术就是载波聚合。
由于目前无线频谱资源的紧缺性, 世界各移动运营商拥有的频谱资源往 往比较零散, 而 IMT-Advanced要求峰值速率的指标更高 (高移动性下支持 100Mbps, 低移动性下支持 lGbps ) , 以目前的 LTE标准最大 20MHz的带宽 是无法满足 IMT-Advanced要求的, 所以需要扩充到更高带宽, 比如 40MHz、 60MHz, 甚至更高。 提高带宽和峰值速率的方法之一是对频域进行扩充, 即 把几个基于 20MHz的 LTE频带捆绑在一起, 通过 "载波聚合" 的方式进行 带宽扩大, 这就是载波聚合技术的本质。 因此, LTE-Advanced系统也属于多 载波系统。
应用了载波聚合技术的 LTE-Advanced系统中,参与聚合的载波被称为分 量载波( Component Carrier ) , UE可以同时在多个分量载波上和 eNB进行收 发传输, 在单个分量载波上, 仍然维持了 LTE release8 的特性, 也就是说 LTE-Advanced系统可以看成是多个 LTE系统的 "捆绑" 。 分量载波在频带上 可以是连续的, 也可以是不连续的。
多个分量载波聚合后, LTE-Advanced标准的 UE就可以使用大带宽频语 资源来实现大流量的数据业务。 值得注意的是, 随着通讯技术的发展, 目前 无线网络可以支持的业务种类非常丰富, 例如 VoIP ( Voice over Internet Protocol, 网络语音业务)、 Video Stream (视频流业务)、 FTP ( File Transfer Protocol, 文件传输业务) 、 网页浏览业务, 不同业务的流量需求都不同, 有 的需求很小 (例如 VoiP ) , 有的需求很大(例如 FTP ) 。 并且随着系统带宽 的增加以及 LTE-Advanced系统的普及,其用户数也会越来越多。为了追求提 高系统的频语效率和用户容量, LTE-Advanced系统要求可以对多载波进行灵 活的管理, 例如根据用户业务负载的需求、 载波频谱负载的情况以及载波信 道条件的情况, 灵活动态地调整每个用户使用的分量载波的数量。 一个用户 使用的分量载波越多, 其理论可分配到的带宽就越大, 但是所需占用的额外 公共控制信道资源也越多, UE的耗电也越大, 当 eNB为 UE分配了多个分量 载波, 而这些分量载波的利用率却很低时, 就会造成资源浪费, 因此 LTE-Advanced 系统需要具备可灵活地为每个 UE增加和删除分量载波的机 制。
目前 LTE-Advanced系统尚没有系统的增加和删除分量载波的机制。 LTE 系统的载波增加和删除的机制是针对单载波系统的, 需要完成前述的如图 1 所述的多个步骤, 而在 LTE-Advanced系统中, UE仅在接入初始载波(即第 一个分量载波)时需要完成全部这些步骤, 当 eNB要为 UE增加更多载波时, UE在这些额外的载波上和 eNB建立连接其实不需要那么多步骤, 例如新增 的载波和初始载波本就是同步时, UE是不需要在新增载波上发起随机接入 的; 又例如, UE新增的载波不一定会马上用来发送数据, 那么如果在增加载 波的同时就激活了该载波(这里所述的激活是指 UE使能 eNB发送的该载波 的配置参数, 并开始发送上行链路参考信号和信道质量指示信息, UE随时可 以接收 eNB的调度指令) , UE在这个新增载波上就会产生额外的系统开销 以及耗电。
目前 3Gpp会议中针对 LTE-Advanced的载波管理问题也提出了 2种方案, 一种方案是 "一步走" 的方案: 当 eNB要为 UE增加载波时, eNB将目标载 波的所有配置参数一步发送给 UE (可以全部通过 RRC信令在 UE已有的其 他载波上发送, 也可以釆用 RRC信令以及通知 UE读广播信道相结合的方 式) , 当 UE收到了所有目标载波的配置参数, UE自动激活该载波, 开始上 行发送和下行接收; 当 eNB要为 UE删除载波时, eNB通知 UE要删除的目 标载波的信息, UE去激活(所述的去激活是指 UE停止在目标载波上的所有 的上行发送以及下行接收, 但不释放配置参数) 目标载波, 同时释放目标载 波的所有配置参数。 这种方案的缺点在于, UE每增加和删除一次载波, 都需 要和 eNB之间产生较大的 RRC信令开销, 并且将载波的参数配置和激活捆 绑在一起, 严重限制了载波管理的灵活性。
另一种方案是 "两步走" 的方案: 当 eNB要为 UE增加载波时, eNB将 目标载波的所有配置参数一步发送给 UE, UE收到了所有目标载波的配置参 数但并不自动激活该载波, eNB才艮据资源管理的情况(例如载波间的负载平 衡情况、 UE的流量需求等信息) 决定何时给 UE发送激活目标载波的信令, 当 UE收到激活信令后, 才会激活目标载波, 开始上行发送和下行接收; 当 eNB要为 UE删除载波时, eNB通知 UE要去激活的目标载波的信息, UE去 激活目标载波, 但不释放目标载波的配置参数, eNB根据资源管理的情况决 定何时给 UE发送删除目标载波的信令, 当 UE收到删除信令后, 才会释放目 标载波的所有配置参数。 这种方案虽然增加了载波管理的灵活性, 但缺点在 于: 载波的配置参数中有些属于很少变化的公共配置参数, 而有些是和控制 信道资源以及上行参考信号资源的占用相关的配置参数 (例如信道质量指示 的配置参数、 调度请求配置参数以及上行参考信号配置参数) , 这些参数配 置的资源都属于 UE共享性质的公共资源, 当 eNB给某个 UE分配了这些公 共资源, 就势必影响其他 UE的公共资源分配。 若 eNB为 UE发送了目标载 波的所有配置信息, 但却长时间不激活该载波的话, 就造成 UE对目标载波 的公共资源的浪费性占用, 对系统容量造成影响。
考虑到未来无线通讯业务类型的丰富以及用户容量的庞大, 载波管理必 将面临对灵活性、 高效性的更高要求,有必要为 LTE-Advanced系统制定一个 灵活的载波管理方法。
发明内容
本发明要解决的技术问题是提供一种多载波系统下的载波管理方法和演 进型基站, 能够提高载波管理灵活性。
为了解决上述问题, 本发明提供了一种载波管理方法, 包括载波参数的 配置: 将一载波的所有参数划分为公共参数和专用参数,在对用户设备(UE ) 进行所述载波的参数配置过程中, 演进型基站 (eNB )按照所划分的种类分 批进行载波参数的配置。
优选地, 按照下述原则之一将一载波的所有参数划分为公共参数和专用 参数: 若网络侧根据一原则判断参数在预设时间范围内无需改变, 则将其划 分为公共参数; 若网络侧判断参数在预设时间范围内需要改变, 则将其划分 为专用参数; 若参数与载波的以下任一个信道资源的分配相关, 则将其划分 为专用参数, 若参数与载波的以下任一个信道资源的分配无关, 则将其划分 为公共参数: 上行链路控制信道、 上行链路共享信道; 以及若参数属于广播 信道发送的系统信息内的参数, 则将其划分为公共参数, 若参数不属于广播 信道发送的系统信息内的参数, 则将其划分为专用参数。
优选地, 所述方法还包括: 将所述专用参数中与上、 下行载波信道估计 相关的参数划分为信道质量专用参数, 将所述专用参数中与上、 下行载波信 道估计无关的参数划分为调度专用参数; 按照所划分的种类分批进行参数的 配置是, 所述 eNB分别将所述载波的公共参数、 信道质量专用参数和调度专 用参数配置给所述 UE。
优选地, 在不同载波的参数配置过程中, 所述公共参数和专用参数的划 分原则相同或不同。
优选地, 所述方法还包括: 载波参数的激活, 所述载波参数的激活为: 所述 eNB分批激活配置给所述 UE的所有参数, 其包括信道质量部分参数激 活和调度部分参数激活, 其中, 所述信道质量部分参数激活是: 激活所述所 有参数中与载波信道估计相关的参数, 所述调度部分参数激活是: 激活所述 所有参数中与载波信道估计无关的参数。
优选地, 所述 eNB完成以下操作之一: 所述公共参数的配置、 专用参数 的配置和信道质量部分参数激活; 所述专用参数的配置和信道质量部分参数 激活; 以及所述专用参数的配置、 信道质量部分参数激活和调度部分参数激 活。
优选地, 所述方法还包括: 载波参数的激活, 所述载波参数的激活为: 所述 eNB分批激活配置给所述 UE的所述所有参数, 其包括信道质量部分参 数激活, 所述信道质量部分参数激活是: 激活所述所有参数中与载波信道估 计相关的参数, 所述 eNB完成所述信道质量专用参数的配置和信道质量部分 参数激活。
优选地, 所述方法还包括: 载波参数的激活, 所述载波参数的激活为: 所述 eNB分批激活配置给所述 UE的所述所有参数, 其包括调度部分参数激 活, 所述调度部分参数激活是: 激活所述所有参数中与载波信道估计无关的 参数, 所述 eNB完成所述调度专用参数的配置和调度部分参数激活。
优选地, 所述方法还包括: 若所述 UE在载波参数的配置和 /或载波参数 的激活过程中, 收到了所述 eNB下发的参数重配置消息, 则根据该参数重配 置消息的内容进行参数重配置。
为了解决上述问题, 本发明还提供了一种载波管理方法, 包括载波参数 的激活, 所述载波参数的激活包括: 演进型基站 (eNB )分批激活配置给用 户设备 ( UE ) 的参数, 其包括信道质量部分参数激活和调度部分参数激活, 其中, 所述信道质量部分参数激活是: 激活所述参数中与载波信道估计相关 的参数, 所述调度部分参数激活是: 激活所述参数中与载波信道估计无关的 参数。
优选地, 所述方法还包括: 若所述 UE在载波参数的激活过程中, 收到 了所述 eNB下发的参数重配置消息, 则根据该参数重配消息的内容进行参数 重配置。
为了解决上述问题, 本发明还提供了一种载波管理方法, 包括载波参数 的去激活, 所述载波参数的去激活包括: 演进型基站(eNB )在指示用户设 备(UE )去激活载波的过程中, 指示 UE分批进行参数的去激活, 其包括调 度部分参数去激活和信道质量部分参数去激活, 其中, 所述调度部分参数去 激活是: 去激活所述参数中与载波信道估计无关的参数, 所述信道质量部分 参数去激活是: 去激活所述参数中与载波信道估计相关的参数。
优选地, 所述方法还包括: 载波参数的释放, 所述载波参数的释放为: 所述 eNB指示所述 UE分批进行所述载波参数的释放, 其包括专用参数的释 放和公共参数的释放。 优选地, 所述方法还包括: 所述公共参数和专用参数按照下述原则之一 划分:
若网络侧根据一原则判断参数在预设时间范围内无需改变, 则将其划分 为公共参数; 若网络侧判断参数在预设时间范围内需要改变, 则将其划分为 专用参数; 若参数与载波的以下任一个信道资源的分配相关, 则将其划分为 专用参数, 若参数与载波的以下任一个信道资源的分配无关, 则将其划分为 公共参数: 上行链路控制信道、 上行链路共享信道; 以及若参数属于广播信 道发送的系统信息内的参数, 则将其划分为公共参数, 若参数不属于广播信 道发送的系统信息内的参数, 则将其划分为专用参数。
优选地, 所述 eNB完成以下操作之一: 所述调度部分参数去激活、 信道 质量部分参数去激活和专用参数的释放; 所述信道质量部分参数去激活和专 用参数的释放; 以及所述信道质量部分参数去激活、 专用参数的释放和公共 参数的释放。
参数释放。
优选地, 所述方法还包括: 所述 eNB完成所述调度部分参数去激活和调 度专用参数的释放, 和 /或, 完成所述信道质量部分参数去激活和信道质量专 用参数的释放。
优选地, 所述方法还包括: 若所述 UE在载波参数的去激活和 /或载波参 数的释放过程中, 收到了所述 eNB下发的参数重配置消息, 则根据该参数重 配置消息的内容进行参数重配置。
为了解决上述问题, 本发明还提供了一种载波管理方法, 包括载波参数 的释放, 所述载波参数的释放包括: 演进型基站(eNB )指示用户设备(UE ) 分批释放已配置的载波参数, 其包括专用参数的释放和公共参数的释放。
优选地, 所述方法还包括: 所述公共参数和专用参数按照下述原则之一 划分: 若网络侧根据一原则判断参数在预设时间范围内无需改变, 则将其划 分为公共参数; 若网络侧判断参数在预设时间范围内需要改变, 则将其划分 为专用参数; 若参数与载波的以下任一个信道资源的分配相关, 则将其划分 为专用参数, 若参数与载波的以下任一个信道资源的分配无关, 则将其划分 为公共参数: 上行链路控制信道、 上行链路共享信道; 以及若参数属于广播 信道发送的系统信息内的参数, 则将其划分为公共参数, 若参数不属于广播 信道发送的系统信息内的参数, 则将其划分为专用参数。
优选地, 所述专用参数的释放包括信道质量专用参数的释放以及调度专 用参数的释放。
优选地, 所述方法还包括: 若所述 UE在载波参数的释放过程中, 收到 了所述 eNB下发的参数重配置消息, 则根据该参数重配置消息的内容进行参 数重配置。
为了解决上述问题, 本发明还提供了一种实现载波管理的演进型基站, 包括参数分类保存单元、 参数配置单元和参数激活单元, 其中:
所述参数分类保存单元设置为, 将一载波的所有参数划分为公共参数和 专用参数, 并分别保存;
所述参数配置单元设置为, 根据参数分类保存单元保存的内容, 分批对 用户设备(UE )进行所述载波的参数配置, 所述载波的参数配置包括公共参 数的配置和专用参数的配置;
所述参数激活单元设置为, 分批激活配置给所述 UE的参数, 其包括信 道质量部分参数激活和调度部分参数激活, 其中, 所述信道质量部分参数激 活是: 激活所述参数中与载波信道估计相关的参数, 所述调度部分参数激活 是: 激活所述参数中与载波信道估计无关的参数。
为了解决上述问题, 本发明还提供了一种实现载波管理的演进型基站, 包括参数分类保存单元、 参数去激活单元和参数释放单元, 其中:
所述参数去激活单元设置为,分批去激活配置给用户设备 ( UE )的参数, 其包括调度部分参数去激活和信道质量部分参数去激活, 其中, 所述调度部 分参数去激活是: 去激活所述参数中与载波信道估计无关的参数, 所述信道 质量部分参数去激活是: 去激活所述参数中与载波信道估计相关的参数; 所述参数分类保存单元设置为, 将一载波的所有参数划分为公共参数和 专用参数, 并分别保存; 所述参数释放单元设置为, 根据参数分类保存单元保存的内容, 分批释 放配置给所述 UE的载波参数, 其包括专用参数的释放和公共参数的释放。
本发明所述载波管理方法, 通过对载波增加和删除过程的改进, 以解决 载波增加和删除过程的实现复杂度问题, 并降低系统开销、 提高载波管理灵 活性、 节省 UE耗电以及系统的频谱效率。 附图概述
图 1为 LTE标准定义的 UE接入 eNB的示意图;
图 2为本发明的实施例 1的流程示意图;
图 3为本发明的实施例 2的流程示意图;
图 4为本发明的实施例 3的流程示意图;
图 5为本发明的实施例 4的流程示意图;
图 6为本发明的实施例 5的流程示意图;
图 7为本发明的实施例 6的流程示意图;
图 8为本发明的实施例 7的流程示意图。
本发明的较佳实施方式
载波参数的配置包括:将某载波的所有参数划分为公共参数和专用参数, 在对用户设备 ( UE )进行所述载波的参数配置过程中, 演进型基站(eNB ) 按照所划分的种类分批进行参数的配置, 包括公共参数的配置和专用参数的 配置。
在不同载波的参数配置过程中, 所述公共参数和专用参数的划分原则相 同或不同。
优选地, 所述专用参数中与上、 下行载波信道估计相关的参数划分为信 道质量专用参数, 其余参数划分为调度专用参数; 所述 eNB分别将所述载波 的公共参数、 信道质量专用参数和调度专用参数配置给所述 UE。
载波参数的激活包括: eNB分批激活配置给 UE的参数, 包括信道质量 部分参数激活和调度部分参数激活, 其中, 所述信道质量部分参数激活是指 激活所述参数中与载波信道估计相关的参数, 所述调度部分参数激活是指激 活所述参数中与载波信道估计无关的参数。
载波参数的去激活包括: eNB在指示 UE去激活载波的过程中, 指示 UE 分批进行参数的去激活, 包括调度部分参数去激活和信道质量部分参数去激 活, 其中, 所述调度部分参数去激活是指去激活所述参数中与载波信道估计 无关的参数, 所述信道质量部分参数去激活是指去激活所述参数中与载波信 道估计相关的参数。
载波参数的释放包括: eNB指示 UE分批释放已配置的载波参数, 包括 专用参数的释放和公共参数的释放。
优选地, 所述专用参数的释放进一步包括信道质量专用参数的释放以及 调度专用参数的释放。
下面先对下文所涉及的各个过程进行说明:
载波的参数配置过程和载波的激活过程共同组成载波的增加过程;其中, 载波的参数配置过程按照一定的原则分为公共参数配置过程和专用参数配置 过程两部分; 载波的激活过程划分为信道质量部分参数激活 (以下简称信道 质量部分激活)和调度部分参数激活 (以下简称调度部分激活) 。
载波的去激活过程和载波的参数配置释放过程共同组成载波的删除过 程; 其中, 载波的去激活过程也对应的分为信道质量部分参数去激活 (以下 简称信道质量部分去激活)和调度部分参数去激活 (以下简称调度部分去激 活) ; 载波的参数配置释放过程也对应的分为公共参数配置释放过程和专用 参数配置释放过程。
当所述的信道质量部分激活和调度部分激活都完成, 则认为载波参数激 活; 当所述的信道质量部分去激活和调度部分去激活都完成, 则认为载波参 数去激活。
这样划分参数的好处在于, 专用参数属于可动态调整且关系到公共资源 占用的参数, 将其独立出来, 可使得载波管理更加灵活, 资源管理的效率也 得到提高。 这样对激活进行划分的好处在于: 1.在 eNB进行调度之前 , 提前完成信 道估计, 这样在载波完全激活后, eNB可以立刻开始在目标 CC ( Component Carrier, 分量载波) 的调度, 而不必担心信道估计不准确带来的流量下降。 2.在调度部分激活之前, eNB 可根据信道估计, 进一步判断目标载波是否适 合被激活, 如果信道估计结果较差, eNB可选择其他载波。
所述公共参数和专用参数的划分原则为以下之一:
若网络侧根据某些原则判断参数在预设时间范围 (该范围可以设置为一 个较长的时间范围) 内是无需改变的, 则将其划分为公共参数; 否则划分为 专用参数; 所述某些原则可以包括: 网络负载是否超过某个门限; 小区间干 扰是否超过某个门限等;
若参数与载波的以下任一个信道资源的分配相关, 则将其划分为专用参 数, 否则划分为公共参数: 上行链路控制信道、 上行链路共享信道;
若参数属于广播信道发送的系统信息内的参数,则将其划分为公共参数, 否则划分为专用参数。
公共参数和专用参数的划分可以是不固定的, 即在不同的载波参数配置 过程中, 公共参数和专用参数的划分可以釆用不同的划分原则。 这样可以增 加管理的灵活性, 因为对 eNB来说, 某些参数在某些场合是不需要变化的, 在某些场合则有可能更改, 那么这些参数在某些场合就可划分入公共参数, 有些场合划分入专用参数。
专用参数还可以进一步划分为信道质量专用参数和调度专用参数; 所述 信道质量专用参数是指专用参数中与上、 下行载波信道估计相关的参数, 所 述的调度专用参数是指专用参数中与上、 下行载波信道估计无关的参数。
所述的信道质量部分激活是指 UE使能了载波的所有参数中与上行载波 信道估计以及下行载波信道估计相关的参数(包括公共参数和专用参数) , 即与载波信道估计相关的参数为信道质量部分参数。对 LTE-Advanced系统来 说, 信道质量部分激活指的是使能与发送 SRS ( Sounding Reference Signal, 上行导频参考信号)相关的所有参数, 以及与发送 CQI ( Channel Quality Indicator, 信道质量指示)相关的所有参数, 并开始发送 SRS和 CQI; 所述的调度部分激活是指 UE使能了载波的参数中除了与信道质量部分 激活相关之外的其他所有参数, 并开始相关的上行发送和下行接收。
所述的去激活是指激活的逆操作。
进一步地, 在载波增加或删除过程中, 若 UE收到了 eNB下发的参数重 配置消息, 则根据该消息内容进行参数重配置。
优选地, 所述的载波增加过程的 4个子过程 (载波的公共参数配置过程, 载波的专用参数配置过程, 载波的信道质量部分激活, 载波的调度部分激活) 中的相邻的两个或多个子过程也可以结合在一起作为一个过程执行(以节省 信令开销和减少延迟) 。 例如, eNB可通过一条消息完成以下操作之一: 所 述公共参数的配置、 专用参数的配置和信道质量部分参数激活; 所述专用参 数的配置和信道质量部分参数激活; 所述专用参数的配置、 信道质量部分参 数激活和调度部分参数激活。 此外, 如果专用参数被进一步划分为信道质量 专用参数和调度专用参数, eNB可通过一条消息完成: 信道质量专用参数的 配置和信道质量部分参数激活, 和 /或, 调度专用参数的配置和调度部分参数 激活。
优选地, 所述的载波删除过程的 4个子过程(载波的公共参数配置释放 过程, 载波的专用参数配置释放过程, 载波的信道质量部分去激活, 载波的 调度部分去激活) 中的相邻的两个或多个子过程也可以结合在一起作为一个 过程执行(以节省信令开销和减少延迟) 。 例如, eNB可通过一条消息完成 以下操作之一: 所述调度部分参数去激活、 信道质量部分参数去激活和专用 参数的释放; 所述信道质量部分参数去激活和专用参数的释放; 所述信道质 量部分参数去激活、 专用参数的释放和公共参数的释放。 此外, 如果专用参 数被进一步划分为信道质量专用参数和调度专用参数, 所述 eNB可通过一条 消息完成: 调度部分参数去激活和调度专用参数的释放, 和 /或, 信道质量部 分参数去激活和信道质量专用参数的释放。
优选地, 根据上述的对载波增加过程和删除过程的划分方法, 可以产生 以下几种载波管理方法:
在以下方法中,若 UE需要通过随机接入或其他上行同步方法才能和 eNB 在所述目标载波上实现上行同步, 那么由 eNB来通知 UE发起随机接入或执 行其他上行同步方法; 或者在广播消息中告知哪些载波是相互间不同步的, 由 UE自行判断是否要在目标载波执行上行同步过程;若目标载波和 UE已有 的载波是同步的, 那么 UE不需要再执行上行同步过程。
载波管理方法 1:
若 UE已经和 eNB在一个或多个载波上建立连接, 当 eNB要为 UE增加 一个或多个载波时, 其增加过程包括下面的步骤:
步骤 1A-1 , eNB将要增加的目标载波的公共参数发送给 UE;
发送方式可以是通过广播信道(通知 UE去读取广播信道上发送的配置 参数) , 也可以通过已经和 UE建立连接的载波来发送。
步骤 1A-2, UE接收目标载波的公共参数;
步骤 1A-3 , eNB将要增加的目标载波的专用参数发送给 UE;
所述专用参数的发送方式可以是通过已经和 UE建立连接的其他载波来 发送。
步骤 1A-4, UE接收到目标载波的专用参数后, 进行目标载波参数的激 活, 包括信道质量部分激活和调度部分激活。
eNB和 UE可以约定只要 UE收到 eNB发送的专用参数, 就进行目标载 波参数的激活; 或者 eNB可以釆用设置激活指示的方式通知 UE进行目标载 波参数的激活, 即 eNB在向 UE发送专用参数的消息中携带一个激活指示, UE根据该激活指示进行目标载波参数的激活。
若收到目标载波的专用参数时, UE未在目标载波获得上行同步, 则先进 行随机接入或其他上行同步方法, 获得上行同步后, UE再对目标载波进行信 道质量部分激活和调度部分激活。
若收到目标载波的专用参数时, UE已在目标载波获得上行同步, 则 UE 激活目标载波, 至此载波的增加过程完成。
若 UE已经和 eNB在一个或多个载波上建立连接, 当 eNB要求 UE删除 一个或多个载波时, 其过程包括下面的步骤:
步骤 1B-1 , eNB通知 UE对目标载波进行去激活; 步骤 1B-2, UE收到 eNB发送的通知后, 去激活所述目标载波(包括信 道质量部分去激活和调度部分去激活) , 并释放所述载波的专用参数;
步骤 1B-3 , eNB通知 UE将所述载波完全删除;
步骤 1B-4, UE收到 eNB的通知后, 释放所述载波的公共参数。
载波管理方法 2:
若 UE已经和 eNB在一个或多个载波上建立连接, 当 eNB要为 UE增加 一个或多个载波时, 其增加过程包括下面的步骤:
步骤 2A-1 , eNB将要增加的目标载波的所有参数发送给 UE;
所述参数的发送方式可以是通过已经和 UE建立连接的其他载波来发送。 步骤 2A-2, UE收到 eNB发送的目标载波所有参数后, 执行信道质量部 分激活;
如载波管理方法 1所述, UE和 eNB可以约定, 只要 UE收到所有参数, 则进行信道质量部分激活。 或者由 eNB在消息中下发指示, 以指示 UE在收 到所有参数后进行信道质量部分激活。
步骤 2A-3 , eNB通知 UE执行调度部分激活;
步骤 2A-4, UE根据 eNB的指示进行调度部分激活, 至此载波的增加过 程冗成。
若 UE已经和 eNB在一个或多个载波上建立连接, 当 eNB要求 UE删除 一个或多个载波时, 其过程包括下面的步骤:
步骤 2B-1 , eNB通知 UE对目标载波进行调度部分去激活;
步骤 2B-2, UE收到通知后执行调度部分去激活;
步骤 2B-3 , eNB通知 UE将所述载波完全删除;
步骤 2B-4, UE接收到 eNB的指示后, 对目标载波进行信道质量部分去 激活, 同时释放所述目标载波的所有参数。
载波管理方法 3: 若 UE已经和 eNB在一个或多个载波上建立连接, 当 eNB要为 UE增加 一个或多个载波时, 其增加过程包括下面的步骤:
步骤 3A-1 , eNB将要增加的目标载波的所有参数发送给 UE;
发送方式可以是通过已经和 UE建立连接的载波来发送, 或者结合通过 广播信道(通知 UE去读取广播信道上发送的配置参数 ) 的方式。
步骤 3A-2, UE接收 eNB发送的目标载波的所有参数;
步骤 3A-3 , eNB通知 UE对目标载波进行信道质量部分激活; 步骤 3A-4, UE对目标载波进行信道质量部分激活;
若此时 UE未在目标载波获得上行同步, 则先进行随机接入或其他上行 同步方法, 获得上行同步后, UE再对目标载波进行信道质量部分激活。
步骤 3A-5 , eNB通知 UE对目标载波进行调度部分激活;
步骤 3A-6, UE收到 eNB的通知后执行调度部分激活, 至此载波的增加 过程完成。
若 UE已经和 eNB在一个或多个载波上建立连接, 当 eNB要求 UE删除 一个或多个载波时, 其过程包括下面的步骤:
步骤 3B-1 , eNB通知 UE对目标载波进行调度部分去激活;
步骤 3B-2, UE收到 eNB的通知后执行调度部分去激活操作; 步骤 3B-3 , eNB通知 UE对目标载波进行信道质量部分去激活; 步骤 3B-4, UE收到 eNB的通知后执行信道质量部分去激活操作; 步骤 3B-5, eNB通知 UE将所述目标载波完全删除;
步骤 3B-6, UE释放所述目标载波的所有参数。
载波管理方法 4:
若 UE已经和 eNB在一个或多个载波上建立连接, 当 eNB要为 UE增加 一个或多个载波时, 其增加过程包括下面的步骤:
步骤 4A-1 , eNB将要增加的目标载波的公共参数发送给 UE;
发送方式可以是通过已经和 UE建立连接的载波来发送, 或者结合通过 广播信道(通知 UE去读取广播信道上发送的配置参数) 的方式。
步骤 4A-2 , UE接收 eNB发送的目标载波的公共参数;
步骤 4A-3 , eNB将要增加的目标载波的专用参数发送给 UE;
发送方式可以是通过已经和 UE建立连接的载波来发送。
步骤 4A-4 , UE接收 eNB发送的目标载波的专用参数;
步骤 4A-5 , eNB通知 UE对目标载波进行信道质量部分激活; 步骤 4A-6 , UE根据 eNB的通知对目标载波进行信道质量部分激活; 若此时 UE未在目标载波获得上行同步, 则先进行随机接入或其他上行 同步方法, 获得上行同步后, UE再对目标载波进行信道质量部分激活。
步骤 4A-7 , eNB通知 UE对目标载波进行调度部分激活;
步骤 4A-8 , UE收到通知后执行调度部分激活, 至此载波的增加过程完 成。
若 UE已经和 eNB在一个或多个载波上建立连接, 当 eNB要求 UE删除 一个或多个载波时, 其过程包括下面的步骤:
步骤 4B-1 , eNB通知 UE对目标载波进行调度部分去激活;
步骤 4B-2 , UE收到 eNB的通知后执行调度部分去激活操作; 步骤 4B-3 , eNB通知 UE对目标载波进行信道质量部分去激活; 步骤 4B-4 , UE收到 eNB的通知后执行信道质量部分去激活操作; 步骤 4B-5 , eNB通知 UE释放所述目标载波的专用参数;
步骤 4B-6 , UE收到 eNB的通知后释放所述目标载波的专用参数; 步骤 4B-7 , eNB通知 UE完全删除目标载波;
步骤 4B-8 , UE收到 eNB的通知后释放所述目标载波的公共参数。 载波管理方法 5:
若 UE已经和 eNB在一个或多个载波上建立连接, 当 eNB要为 UE增加 一个或多个载波时, 其增加过程包括下面的步骤:
步骤 5A-1 , eNB将要增加的目标载波的公共参数发送给 UE; 发送方式可以是通过广播信道(通知 UE去读取广播信道上发送的配置 参数) , 也可以通过已经和 UE建立连接的载波来发送。
步骤 5A-2, UE接收目标载波的公共参数;
步骤 5A-3 , eNB将要增加的目标载波的专用参数发送给 UE, 并通知 UE 进行信道质量部分激活;
如管理方法 1所述, 通知的方式有默认方式和指示方式, 此处不再赘述。 步骤 5A-4, UE接收 eNB发送的目标载波的专用参数, 进行信道质量部 分激活;
若此时 UE未在目标载波获得上行同步, 则先进行随机接入或其他上行 同步方法, 获得上行同步后, UE再对目标载波进行信道质量部分激活。
步骤 5A-5 , eNB通知 UE进行调度部分激活;
步骤 5A-6, UE收到 eNB的通知后执行调度部分激活, 至此载波的增加 过程完成。
若 UE已经和 eNB在一个或多个载波上建立连接, 当 eNB要求 UE删除 一个或多个载波时, 其过程包括下面的步骤:
步骤 5B-1 , eNB通知 UE对目标载波进行调度部分去激活;
步骤 5B-2, UE收到 eNB的通知后执行调度部分去激活操作;
步骤 5B-3 , eNB通知 UE对目标载波进行信道质量部分去激活, 并释放 目标载波的专用参数;
步骤 5B-4, UE收到 eNB的通知后执行信道质量部分去激活以及释放目 标载波专用参数的操作;
步骤 5B-5 , eNB通知 UE完全删除目标载波;
步骤 5B-6, UE收到 eNB的通知后释放所述目标载波的公共参数。
载波管理方法 6:
若 UE已经和 eNB在一个或多个载波上建立连接, 当 eNB要为 UE增加 一个或多个载波时, 其增加过程包括下面的步骤:
步骤 6A-1 , eNB将要增加的目标载波的公共参数发送给 UE; 发送方式可以是通过已经和 UE建立连接的载波来发送, 或者结合通过 广播信道(通知 UE去读取广播信道上发送的配置参数) 的方式。
步骤 6A-2, UE接收 eNB发送的目标载波的公共参数;
步骤 6A-3 , eNB将要增加的目标载波的专用参数发送给 UE;
发送方式可以是通过已经和 UE建立连接的载波来发送。
步骤 6A-4, UE接收 eNB发送的目标载波的专用参数;
步骤 6A-5 , eNB通知 UE对目标载波进行激活;
步骤 6A-6, UE根据 eNB的通知对目标载波进行激活, 包括信道质量部 分激活和调度部分激活。
若此时 UE未在目标载波获得上行同步, 则先进行随机接入或其他上行 同步方法, 获得上行同步后, UE再对目标载波进行激活, 完成激活后, 载波 的增加过程完成。
若 UE已经和 eNB在一个或多个载波上建立连接, 当 eNB要求 UE删除 一个或多个载波时, 其过程包括下面的步骤:
步骤 6B-1 , eNB通知 UE对目标载波进行去激活;
步骤 6B-2, UE收到 eNB的通知后执行目标载波参数的去激活操作; 步骤 6B-3 , eNB通知 UE释放所述目标载波的专用参数;
步骤 6B-4, UE收到 eNB的通知后释放所述目标载波的专用参数; 步骤 6B-5 , eNB通知 UE完全删除所述目标载波;
步骤 6B-6, UE收到 eNb的通知后释放所述目标载波的公共参数。
载波管理方法 7:
若 UE已经和 eNB在一个或多个载波上建立连接, 当 eNB要为 UE增加 一个或多个载波时, 其增加过程包括下面的步骤:
步骤 7A-1 , eNB将要增加的目标载波的公共参数发送给 UE;
发送方式可以是通过已经和 UE建立连接的载波来发送, 或者结合通过 广播信道(通知 UE去读取广播信道上发送的配置参数) 的方式。 步骤 7A-2, UE接收 eNB发送的目标载波的公共参数;
步骤 7A-3 , eNB将要增加的目标载波的信道质量专用参数发送给 UE, 同时通知 UE进行信道质量部分激活;
发送方式可以是通过已经和 UE建立连接的载波来发送。
步骤 7A-4, UE接收 eNB发送的目标载波的信道质量专用参数, 并进行 信道质量部分激活;
步骤 7A-5, eNB将要增加的目标载波的调度专用参数发送给 UE, 同时 通知 UE进行调度部分激活;
发送方式可以是通过已经和 UE建立连接的载波来发送。
步骤 7A-6, UE接收 eNB发送的目标载波的调度专用参数, 并进行调度 部分激活, 至此载波的增加过程完成。
若 UE已经和 eNB在一个或多个载波上建立连接, 当 eNB要求 UE删除 一个或多个载波时, 其过程包括下面的步骤:
步骤 7B-1 , eNB通知 UE对目标载波进行调度部分去激活;
步骤 7B-2, UE收到 eNB的通知后执行调度部分去激活操作并释放调度 专用参数;
步骤 7B-3 , eNB通知 UE对目标载波进行信道质量部分去激活; 步骤 7B-4, UE收到 eNB的通知后执行信道质量部分去激活操作并释放 信道质量专用参数;
步骤 7B-5, eNB通知 UE完全删除所述目标载波;
步骤 7B-6, UE收到 eNB的通知后释放所述目标载波的公共参数。
上述各个载波管理方法中的载波增加过程和载波删除过程可以任意组合 使用。 另外, 在前述的各个载波管理方法中, 所述的调度部分激活也可以放 在信道质量部分激活的前面执行。
为使本发明的目的、 技术方案和优点更加清楚明白, 以下举实施例并参 照附图, 对本发明进一步详细说明。
以下实施例的 eNB和 UE均属于 LTE-Advanced系统, 支持载波聚合技 术, 釆用频分双工 (FDD )模式。 时分双工 (TDD )模式也可以使用。
在下述实施例中, 载波的公共参数主要包括例如载波频点、 下行链路载 波带宽 ( dl-Bandwidth ) 、 上行链路载波频点 ( ul-CarrierFreq ) 、 上行链路载 波带宽 ( ul-Bandwidth ) 、 小区重选信息 ( cellReselectionlnfoCommon )等参 数;
载波的专用参数主要包括例如 Sounding 参考信号跳频带宽 ( srs-HoppingBandwidth ) 、 Sounding 参 考 信 号 频 域 位 置 ( SoundingRS-UL-ConfigDedicated ->freqDomainPosition ) 、 CQI参数西己置信 息 ( CQI-ReportConfig ) 、 上 行 链 路 功 率 控 制 专 用 参 数 ( uplinkPowerControlDedicated ) 、 非连续接收配置(drx-Config )等参数; 这 里所述的参数可参考 3GPP TS 36.331 V8.6.0。
上述参数的划分仅是实施例子之一, 按照本发明的发明内容所述, 还可 以有其他划分方法, 并且在不同的载波参数配置过程中, 参数的划分可以固 定, 也可以调整。
实施例 1:
设 UE和 eNB已建立了 RRC连接, eNB为 UE配置了 2对上下行载波, 设下行载波是 DL CCl ( Downlink Component Carrier, 下行分量载波)和 DL CC2, 与之相对应的上行载波分别是 UL CC1 ( Uplink Component Carrier, 上 行分量载波)和 UL CC2。
设 eNB因 UE需求的流量增大的原因,需要为 UE增加一对上下行载波, 设其为 DL CC3和 UL CC3。 DL CC3和 DL CC1以及 DL CC2均不同步, UE 需要在 UL CC3发起随机接入来获取上行同步, 该信息包含在 DL CC3和 UL CC3的专用参数配置中。
本实施例的载波管理釆用上述载波管理方法 1 ,本实施例的 UE增加载波 的流程如图 2所示, 其步骤详述如下:
步骤 201 : eNB通过 DL CC1或 DL CC2给 UE发送 DL CC3和 UL CC3 的公共参数;
步骤 202: eNB通过 DL CC1或 DL CC2将 DL CC3和 UL CC3的专用参 数发送给 UE, 并通知 UE进行激活;
步骤 203: UE根据专用参数判断是否要在 UL CC3发起随机接入, 在本 实施例中,由于 DL CC3和 DL CC1以及 DL CC2均不同步, UE需要在 UL CC3 发起随机接入来获取上行同步, 是否要发起随机接入的判断信息包含在 DL CC3和 UL CC3的专用参数中。
步骤 204: UE在 UL CC3发起随机接入, 完成上行同步;
步骤 205: UE激活 DL CC3和 UL CC3 , 完成载波增加过程。
实施例 2:
设 UE和 eNB已建立了 RRC连接, eNB为 UE配置了 2对上下行载波, 设下行载波是 DL CC1和 DL CC2,与之相对应的上行载波分别是 UL CC1和 UL CC2。
设 eNB因现有载波的负载过重的原因,需要为 UE增加一对上下行载波, 设其为 DL CC3和 UL CC3。 DL CC3和 DL CCl是同步的,该信息包含在 DL CC3和 UL CC3的专用参数配置中。
本实施例的载波管理釆用上述载波管理方法 2,本实施例的 UE增加载波 的流程如图 3所示, 其步骤详述如下:
步骤 301: eNB判断 UE是否要在 UL CC3发起随机接入, 因 DL CC3和 DL CC1同步, 所以 UE不需发起随机接入;
步骤 302: eNB将 DL CC3和 UL CC3的所有参数通过 DL CC1或 DL CC2 发送给 UE, 并要求 UE执行信道质量部分激活;
步骤 303: UE对 DL CC3和 UL CC3执行信道质量部分激活;
步骤 304: eNB通知 UE在 DL CC3和 UL CC3执行调度部分激活; 步骤 305: UE对 DL CC3和 UL CC3执行调度部分激活, 完成载波增加 过程。
实施例 3:
设 UE和 eNB已建立了 RRC连接, eNB为 UE配置了 2对上下行载波, 设下行载波是 DL CC1和 DL CC2,与之相对应的上行载波分别是 UL CC1和 UL CC2。
本实施例给出的是 eNB根据 UE流量的变化而实时调整载波的激活与去 激活的例子。 在本实施例中不释放参数, 这样当 eNB需要再次使用目标载波 时, 可以快速的对载波进行重新激活, 大大减少了调度延迟和信令开销, 这 是本发明所述的载波管理方法的一种灵活运用的例子。 在其他实施例中也有 类似的运用。
设 eNB因 UE流量需求下降的原因, 需要为 UE减少一对上下行载波, 设其为 DL CC2和 UL CC2。
本实施例的载波管理釆用上述载波管理方法 3 , 本实施例的流程如图 4 所示, 其步骤详述如下:
步骤 401 : 由于 UE流量需求下降, eNB判断 UE可暂时停止使用一对上 下行载波 DL CC2和 UL CC2;
步骤 402: eNB通知 UE对 DL CC2和 UL CC2进行调度部分去激活; 步骤 403: UE对 DL CC2和 UL CC2执行调度部分去激活;
步骤 404: 在经过一段时间后, UE产生新的流量需求, 向 eNB发送新 的緩冲区状态报告;
步骤 405: eNB根据 UE的緩冲区状态报告判断现有的 DL CC1和 UL CC1 不足以满足 UE的流量需求, 需要重新激活 DL CC2和 UL CC2;
步骤 406: eNB通知 UE对 DL CC2和 UL CC2进行调度部分激活; 步骤 407: UE对 DL CC2和 UL CC2执行调度部分激活, 完成载波增加 过程。
在本实施例中, 由于 eNB并没有指示 UE释放目标载波, 因此在激活时, eNB可以直接指示 UE进行目标载波的激活。且由于 UE仅完成了调度部分去 激活, 因此在激活时, 也只激活调度部分参数即可。
实施例 4:
设 UE和 eNB已建立了 RRC连接, eNB为 UE配置了 2对上下行载波, 设下行载波是 DL CC1和 DL CC2,与之相对应的上行载波分别是 UL CC1和 UL CC2。
本实施例给出的是 eNB根据 UE流量的变化而实时调整载波的激活与去 激活, 以及配置与释放配置的例子。
设 eNB因 UE流量停止的原因, 需要为 UE暂时减少一对上下行载波的 使用, 设其为 DL CC2和 UL CC2, 但考虑到可能在一段时间内 UE仍会有流 量需求的可能, eNB不计划让 UE删除 DL CC2和 UL CC2。
本实施例的载波管理釆用上述的载波管理方法 4,本实施例的流程如图 5 所示, 其步骤详述如下: 步骤 501 : 由于 UE流量停止, eNB判断 UE在一段时间内不会有数据传 输需求, 因此 UE可去激活并释放 DL CC2和 UL CC2的专用参数;
步骤 502: eNB通知 UE对 DL CC2和 UL CC2进行调度部分去激活; 步骤 503: UE对 DL CC2和 UL CC2执行调度部分去激活;
步骤 504: eNB通知 UE对 DL CC2和 UL CC2进行信道质量部分去激活; 步骤 505: UE对 DL CC2和 UL CC2执行信道质量部分去激活; 步骤 506: eNB通知 UE释放 DL CC2和 UL CC2的专用参数;
步骤 507: UE释放 DL CC2和 UL CC2的专用参数;
在本实施例中没有释放公共参数, 这是特殊应用中的一种。 例如如果让 某载波不工作, 可以的方法有三种: (1 )去激活该载波, 本方法的好处是可 以迅速让该载波重新工作; (2 )去激活并释放专用参数, 本方法的好处是可 以让出控制信道资源来让其他用户使用; ( 3 )去激活并释放全部参数。
步骤 508:—段时间后, UE产生新的流量需求, UE通过 UL CC1向 eNB 发送调度请求, 在收到 eNB的调度信令后, UE再向 eNB发送新的緩冲区状 态报告;
步骤 509: eNB根据 UE的緩冲区状态报告判断现有的 DL CC1和 UL CC1 不足以满足 UE的流量需求, 需要重新启用 DL CC2和 UL CC2;
步骤 510: eNB通过 DL CC1向 UE发送 DL CC2和 UL CC2的专用参数; 步骤 511 : eNB通知 UE对 DL CC2和 UL CC2进行信道质量部分激活; 步骤 512: UE对 DL CC2和 UL CC2执行信道质量部分激活;
步骤 513 : eNB通知 UE对 DL CC2和 UL CC2进行调度部分激活; 步骤 514: UE对 DL CC2和 UL CC2执行调度部分激活。
实施例 5:
设 UE和 eNB已建立了 RRC连接, eNB为 UE配置了 1对上下行载波, 设下行载波是 DL CC1 , 与之相对应的上行载波是 UL CC1。
本实施例给出的是 eNB根据现有载波的负载变化, 而对 UE的载波增加 作出预先准备, 以减少调度延迟, 并且预先做好信道估计, 以提高在新增载 波上的 UE的初始吞吐量的例子。
设 eNB因 DL CC 1和 UL CC 1的负载持续增加的原因,判断在短期内 DL
CC1和 UL CC1将不能满足 UE的吞吐量要求,因此需要为 UE预先增加一对 上下行载波, 设其为 DL CC2和 UL CC2 , 且 DL CC2和 DL CC1是同步的。
本实施例的载波管理釆用上述的载波管理方法 5 ,本实施例的流程如图 6 所示, 其步骤详述如下: 步骤 601: 由于 DL CC1和 UL CC1的负载持续增高, eNB判断 UE在短 时间内就需要增加一对上下行载波;
步骤 602: eNB给 UE发送 DL CC2和 UL CC2的公共参数;
步骤 603 : eNB将 DL CC2和 UL CC2的专用参数发送给 UE,并通知 UE 进行信道质量部分激活;
步骤 604: 由于 DL CC2和 DL CC1是同步的, UE无需再进行上行同步,
UE对 DL CC2和 UL CC2执行信道质量部分激活;
步骤 605: —段时间后, eNB判断 DL CCl和 UL CCl已不能满足 UE的 流量需求, 需要立刻完全启用 DL CC2和 UL CC2;
步骤 606: eNB通知 UE对 DL CC2和 UL CC2进行调度部分激活; 步骤 607: UE对 DL CC2和 UL CC2执行调度部分激活, 完成载波增加 过程。
实施例 6: 设 UE和 eNB已建立了 RRC连接, eNB为 UE配置了 1对上下行载波, 设下行载波是 DL CC1 , 与之相对应的上行载波是 UL CC1。
本实施例给出的是 eNB根据 UE的流量需求增加, 先为 UE增加一对载 波, 继而因 UE的数据业务结束, 而让 UE删除一对载波的的例子。
设 eNB因 UE的流量需求增加的原因, 判断 DL CC1和 UL CC1将不能 满足 UE的吞吐量要求,因此需要为 UE增加一对上下行载波,设其为 DL CC2 和 UL CC2, 且 DL CC2和 DL CC1是同步的。
本实施例的载波管理釆用上述的载波管理方法 6,本实施例的流程如图 7 所示, 其步骤详述如下: 步骤 701 : 由于 UE流量需求加大, eNB判断 UE需要增加一对上下行载 波;
步骤 702: eNB给 UE发送 DL CC2和 UL CC2的公共参数;
步骤 703: eNB将 DL CC2和 UL CC2的专用参数发送给 UE;
步骤 704: eNB通知 UE激活 DL CC2和 UL CC2;
步骤 705: 由于 DL CC2和 DL CC1是同步的, UE无需再进行上行同步, UE对 DL CC2和 UL CC2执行激活;
步骤 706: —段时间后, UE的数据业务结束, eNB判断 UE在较长时间 内不会有新的业务需求, 因此可删除 DL CC2和 UL CC2;
步骤 707: eNB通知 UE对 DL CC2和 UL CC2进行删除;
步骤 708: UE收到通知后对 DL CC2和 UL CC2进行去激活, 并释放所 有参数。
实施例 7:
设 UE和 eNB已建立了 RRC连接, eNB为 UE配置了 1对上下行载波, 设下行载波是 DL CC1 , 与之相对应的上行载波是 UL CC1。
本实施例给出的是 eNB根据 UE的流量需求增加, 为 UE增加一对载波 的例子。
设 eNB因 UE的流量需求增加的原因, 判断 DL CC1和 UL CC1将不能 满足 UE的吞吐量要求,因此需要为 UE增加一对上下行载波,设其为 DL CC2 和 UL CC2, 且 DL CC2和 DL CC1是同步的。
本实施例的载波管理釆用上述的载波管理方法 7,本实施例的流程如图 8 所示, 其步骤详述如下: 步骤 801 : 由于 UE流量需求加大, eNB判断 UE需要增加一对上下行载 波;
步骤 802: eNB给 UE发送 DL CC2和 UL CC2的公共参数;
步骤 803: eNB将 DL CC2和 UL CC2的信道质量专用参数发送给 UE; 步骤 804: UE收到信道质量专用参数后, 由于 DL CC2和 DL CC1是同 步的, UE无需再进行上行同步, UE对 DL CC2和 UL CC2执行信道质量部 分激活;
步骤 805: eNB将 DL CC2和 UL CC2的调度专用参数发送给 UE;
步骤 806: UE收到调度专用参数后, 对 DL CC2和 UL CC2执行调度部 分激活, 至此, DL CC2和 UL CC2的增加过程完成。
一种实现载波管理(具体为载波增加) 的 eNB包括参数分类保存单元、 参数配置单元和参数激活单元, 其中:
所述参数分类保存单元设置为, 将某载波的所有参数划分为公共参数和 专用参数, 并分别保存;
所述参数配置单元设置为, 根据参数分类保存单元保存的内容, 分批对 UE进行所述载波的参数配置, 包括公共参数的配置和专用参数的配置; 所述参数激活单元设置为, 分批激活配置给所述 UE的参数, 包括信道 质量部分参数激活和调度部分参数激活, 其中, 所述信道质量部分参数激活 是指激活所述参数中与载波信道估计相关的参数 , 所述调度部分参数激活是 指激活所述参数中与载波信道估计无关的参数。
一种实现载波管理 (具体为载波删除 ) 的 eNB包括参数分类保存单元、 参数去激活单元和参数释放单元, 其中:
所述参数去激活单元设置为, 分批去激活配置给所述 UE的参数, 包括 调度部分参数去激活和信道质量部分参数去激活, 其中, 所述调度部分参数 去激活是指去激活所述参数中与载波信道估计无关的参数, 所述信道质量部 分参数去激活是指去激活所述参数中与载波信道估计相关的参数;
所述参数分类保存单元设置为, 将某载波的所有参数划分为公共参数和 专用参数, 并分别保存;
所述参数释放单元设置为, 根据参数分类保存单元保存的内容, 分批释 放配置给 UE的载波参数, 包括专用参数的释放和公共参数的释放。
通过以上实施例可以看出, 本发明的方法非常灵活, 参数的配置与参数 的激活可以分开使用, 可以满足系统的不同需要。
本领域普通技术人员可以理解上述方法中的全部或部分步骤可通过程序 来指令相关硬件完成, 所述程序可以存储于计算机可读存储介质中, 如只读 存储器、 磁盘或光盘等。 可选地, 上述实施例的全部或部分步骤也可以使用 一个或多个集成电路来实现。 相应地, 上述实施例中的各模块 /单元可以釆用 硬件的形式实现, 也可以釆用软件功能模块的形式实现。 本发明不限制于任 何特定形式的硬件和软件的结合。
以上所述仅为本发明的优选实施例而已, 并非用于限定本发明的保护范 围。 根据本发明的发明内容, 还可有其他多种实施例, 在不背离本发明精神 改变和变形, 凡在本发明的精神和原则之内, 所作的任何修改、 等同替换、 改进等, 均应包含在本发明的保护范围之内。
工业实用性
本发明提供的多载波系统下的载波管理方法和演进型基站, 通过对载波 增加和删除过程的改进, 较好地解决了载波增加和删除过程的实现复杂度问 题, 并降低了系统开销, 提高了载波管理灵活性, 节省了 UE耗电。

Claims

权 利 要 求 书
1、一种载波管理方法, 包括载波参数的配置,所述载波参数的配置包括: 将一载波的所有参数划分为公共参数和专用参数, 在对用户设备 ( UE ) 进行所述载波的参数配置过程中, 演进型基站 (eNB )按照所划分的种类分 批进行载波参数的配置。
2、 如权利要求 1所述的方法, 其中, 按照下述原则之一将一载波的所有 参数划分为公共参数和专用参数:
若网络侧根据一原则判断参数在预设时间范围内无需改变, 则将其划分 为公共参数; 若网络侧判断参数在预设时间范围内需要改变, 则将其划分为 专用参数;
若参数与载波的以下任一个信道资源的分配相关, 则将其划分为专用参 数, 若参数与载波的以下任一个信道资源的分配无关, 则将其划分为公共参 数: 上行链路控制信道、 上行链路共享信道; 以及
若参数属于广播信道发送的系统信息内的参数,则将其划分为公共参数, 若参数不属于广播信道发送的系统信息内的参数, 则将其划分为专用参数。
3、 如权利要求 2所述的方法, 所述方法还包括:
将所述专用参数中与上、 下行载波信道估计相关的参数划分为信道质量 专用参数, 将所述专用参数中与上、 下行载波信道估计无关的参数划分为调 度专用参数;
按照所划分的种类分批进行载波参数的配置是, 所述 eNB分别将所述载 波的公共参数、 信道质量专用参数和调度专用参数配置给所述 UE。
4、 如权利要求 2所述的方法, 其中, 在不同载波的参数配置过程中, 所 述公共参数和专用参数的划分原则相同或不同。
5、 如权利要求 1所述的方法, 所述方法还包括: 载波参数的激活, 所 述载波参数的激活为: 所述 eNB分批激活配置给所述 UE的所有参数, 其包 括信道质量部分参数激活和调度部分参数激活, 其中, 所述信道质量部分参 数激活是: 激活所述所有参数中与载波信道估计相关的参数, 所述调度部分 参数激活是: 激活所述所有参数中与载波信道估计无关的参数。
6、 如权利要求 5所述的方法, 其中,
所述 eNB完成以下操作之一:
所述公共参数的配置、 专用参数的配置和信道质量部分参数激活; 所述专用参数的配置和信道质量部分参数激活; 以及
所述专用参数的配置、 信道质量部分参数激活和调度部分参数激活。
7、 如权利要求 3所述的方法, 所述方法还包括: 载波参数的激活, 所 述载波参数的激活为: 所述 eNB分批激活配置给所述 UE的所述所有参数, 其包括信道质量部分参数激活, 所述信道质量部分参数激活是: 激活所述所 有参数中与载波信道估计相关的参数, 所述 eNB完成所述信道质量专用参数 的配置和信道质量部分参数激活。
8、 如权利要求 3或 7所述的方法, 所述方法还包括: 载波参数的激活, 所述载波参数的激活为:所述 eNB分批激活配置给所述 UE的所述所有参数, 其包括调度部分参数激活, 所述调度部分参数激活是: 激活所述所有参数中 与载波信道估计无关的参数, 所述 eNB完成所述调度专用参数的配置和调度 部分参数激活。
9、 如权利要求 5或 7所述的方法, 所述方法还包括:
若所述 UE在载波参数的配置和 /或载波参数的激活过程中, 收到了所述 eNB下发的参数重配置消息, 则根据该参数重配置消息的内容进行参数重配 置。
10、 一种载波管理方法, 包括载波参数的激活, 所述载波参数的激活包 括:
演进型基站(eNB )分批激活配置给用户设备 ( UE ) 的参数, 其包括信 道质量部分参数激活和调度部分参数激活, 其中, 所述信道质量部分参数激 活是: 激活所述参数中与载波信道估计相关的参数, 所述调度部分参数激活 是: 激活所述参数中与载波信道估计无关的参数。
11、 如权利要求 10所述的方法, 所述方法还包括:
若所述 UE在载波参数的激活过程中, 收到了所述 eNB下发的参数重配 置消息, 则根据该参数重配消息的内容进行参数重配置。
12、 一种载波管理方法, 包括载波参数的去激活, 所述载波参数的去激 活包括:
演进型基站(eNB )在指示用户设备 ( UE )去激活载波的过程中, 指示 UE分批进行参数的去激活,其包括调度部分参数去激活和信道质量部分参数 去激活, 其中, 所述调度部分参数去激活是: 去激活所述参数中与载波信道 估计无关的参数, 所述信道质量部分参数去激活是: 去激活所述参数中与载 波信道估计相关的参数。
13、 如权利要求 12所述的方法, 所述方法还包括: 载波参数的释放, 所 述载波参数的释放为:所述 eNB指示所述 UE分批进行所述载波参数的释放, 其包括专用参数的释放和公共参数的释放。
14、 如权利要求 13所述的方法, 所述方法还包括: 所述公共参数和专用 参数按照下述原则之一划分:
若网络侧根据一原则判断参数在预设时间范围内无需改变, 则将其划分 为公共参数; 若网络侧判断参数在预设时间范围内需要改变, 则将其划分为 专用参数;
若参数与载波的以下任一个信道资源的分配相关, 则将其划分为专用参 数, 若参数与载波的以下任一个信道资源的分配无关, 则将其划分为公共参 数: 上行链路控制信道、 上行链路共享信道; 以及
若参数属于广播信道发送的系统信息内的参数,则将其划分为公共参数, 若参数不属于广播信道发送的系统信息内的参数, 则将其划分为专用参数。
15、 如权利要求 13所述的方法, 其中,
所述 eNB完成以下操作之一:
所述调度部分参数去激活、信道质量部分参数去激活和专用参数的释放; 所述信道质量部分参数去激活和专用参数的释放; 以及
所述信道质量部分参数去激活、 专用参数的释放和公共参数的释放。
16、 如权利要求 13所述的方法, 其中,
所述专用参数的释放还包括调度专用参数释放和信道质量专用参数释 放。
17、 如权利要求 16所述的方法, 所述方法还包括:
所述 eNB完成所述调度部分参数去激活和调度专用参数的释放, 和 /或, 完成所述信道质量部分参数去激活和信道质量专用参数的释放。
18、 如权利要求 13所述的方法, 所述方法还包括:
若所述 UE在载波参数的去激活和 /或载波参数的释放过程中, 收到了所 述 eNB下发的参数重配置消息, 则根据该参数重配置消息的内容进行参数重 配置。
19、 一种载波管理方法, 包括载波参数的释放, 所述载波参数的释放包 括:
演进型基站(eNB )指示用户设备 ( UE )分批释放已配置的载波参数, 其包括专用参数的释放和公共参数的释放。
20、 如权利要求 19所述的方法, 所述方法还包括: 所述公共参数和专用 参数按照下述原则之一划分:
若网络侧根据一原则判断参数在预设时间范围内无需改变, 则将其划分 为公共参数; 若网络侧判断参数在预设时间范围内需要改变, 则将其划分为 专用参数;
若参数与载波的以下任一个信道资源的分配相关, 则将其划分为专用参 数, 若参数与载波的以下任一个信道资源的分配无关, 则将其划分为公共参 数: 上行链路控制信道、 上行链路共享信道; 以及
若参数属于广播信道发送的系统信息内的参数,则将其划分为公共参数, 若参数不属于广播信道发送的系统信息内的参数, 则将其划分为专用参数。
21、 如权利要求 19所述的方法, 其中,
所述专用参数的释放包括信道质量专用参数的释放以及调度专用参数的 释放。
22、 如权利要求 19所述的方法, 所述方法还包括:
若所述 UE在载波参数的释放过程中, 收到了所述 eNB下发的参数重配 置消息, 则根据该参数重配置消息的内容进行参数重配置。
23、 一种实现载波管理的演进型基站(eNB ) , 包括参数分类保存单元、 参数配置单元和参数激活单元, 其中:
所述参数分类保存单元设置为, 将一载波的所有参数划分为公共参数和 专用参数, 并分别保存;
所述参数配置单元设置为, 根据参数分类保存单元保存的内容, 分批对 用户设备 ( UE )进行所述载波的参数配置, 所述载波的参数配置包括公共参 数的配置和专用参数的配置;
所述参数激活单元设置为, 分批激活配置给所述 UE的参数, 其包括信 道质量部分参数激活和调度部分参数激活, 其中, 所述信道质量部分参数激 活是: 激活所述参数中与载波信道估计相关的参数, 所述调度部分参数激活 是: 激活所述参数中与载波信道估计无关的参数。
24、 一种实现载波管理的演进型基站(eNB ) , 包括参数分类保存单元、 参数去激活单元和参数释放单元, 其中:
所述参数去激活单元设置为,分批去激活配置给用户设备 ( UE )的参数, 其包括调度部分参数去激活和信道质量部分参数去激活, 其中, 所述调度部 分参数去激活是: 去激活所述参数中与载波信道估计无关的参数, 所述信道 质量部分参数去激活是: 去激活所述参数中与载波信道估计相关的参数; 所述参数分类保存单元设置为, 将一载波的所有参数划分为公共参数和 专用参数, 并分别保存;
所述参数释放单元设置为, 根据参数分类保存单元保存的内容, 分批释 放配置给所述 UE的载波参数, 其包括专用参数的释放和公共参数的释放。
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