CN105637967A

CN105637967A - Method and apparatus for performing activation/deactivation of serving cell in wireless communication system supporting dual connectivity

Info

Publication number: CN105637967A
Application number: CN201480052265.4A
Authority: CN
Inventors: 权起范
Original assignee: Innovative Technology Lab Co Ltd
Current assignee: Phoenix Club Limited; SK Telecom Co Ltd
Priority date: 2013-09-27
Filing date: 2014-09-25
Publication date: 2016-06-01
Anticipated expiration: 2034-09-25
Also published as: KR102101577B1; CN105637967B; KR102101517B1; KR20190051914A; KR102101578B1; KR20150035358A; KR20190051915A

Abstract

Provided is an apparatus and method for performing activation/deactivation of a serving cell in a wireless communication system supporting dual connectivity. The method for performing activation/deactivation of serving cell by a user equipment in a wireless communication system includes configuring a dual connectivity with at least two different base stations based on dual connectivity configuration information received through RRC (Radio Resource Control) message from a base station, receiving activation/deactivation information about secondary serving cell configured for the UE from each of two different base stations, and selectively applying the activation/deactivation information about the secondary serving cell configured for the UE based on information including the secondary serving cell provided by the base station or information about the base station providing the secondary serving cell configured for the UE.

Description

For performing the method and apparatus of the activation/deactivation of Serving cell in the wireless communication system supporting dual link

Technical field

The method and apparatus of the activation/deactivation of assistant service community is performed when the present invention relates to two different base stations for being connected in wireless communication system to support dual link at subscriber equipment.

Background technology

In a wireless communication system, subscriber equipment (UE) can carry out radio communication by the two or more base stations in multiple base stations (at least one Serving cell is configured by each base station). This feature can be referred to as dual link. In other words, this dual link can be such operation: the radio resource being configured in being connected with at least two heterogeneous networks point controls the UE of (RRC) connection status and uses the radio resource provided by this at least two nexus. At this, described at least two nexus can be physically or logically mutually different multiple base station, and the one in described at least two nexus can be dominant base (MeNB: main enode b), and the another one at least two nexus can be one or more assistant base station (SeNB: auxiliary enode b).

In dual link, base station sends down link data by configuring the carrying for UE and receives uplink data. At this, carrying can be configured by a base station, maybe can be configured by described at least two different base station. Further, in dual link, at least one Serving cell can be configured for each base station, and each Serving cell is operable in activation or deactivation status. The main Serving cell (PCell) can being configured according to existing carrier aggregation (CA) scheme is configurable in dominant base. In one or more assistant base stations, can only configure one or more assistant service community (SCell). Described CA scheme is a technology effectively utilizing divided narrow-band, and this CA scheme can provide such effect: by frequency band continuously or discontinuously in frequency domain is carried out physics polymerization, base station can use broadband in logic.

When UE is connected to base station, the activation/deactivation designator of the assistant service community that this base station configures to this UE transmission for this base station is to optimize the battery consumption of UE, and configuration is activated or deexcitation for the assistant service community of this UE by this UE based on the designator being received from described base station afterwards. But, in dual link, if dominant base and assistant base station all send the activation/deactivation designator of the whole assistant service community configured for respective base station, then may there is this such problem: all can comprise for the configuration activation/deactivation designator for all assistant service communities of described UE owing to sending activation/deactivation designator from each base station, a base station may further indicate that the activation/deactivation of other Serving cells that other base stations provide. Additionally, in dual link, each base station each has medium access control (MAC) scheduler, and each MAC scheduling is all independent work. Accordingly, it is determined that the activation/deactivation of Serving cell that other base stations configure is impossible. Therefore, the problems referred to above are urgently to be resolved hurrily.

Summary of the invention

The illustrative embodiments of the present invention provides the method and apparatus of a kind of activation/deactivation for performing Serving cell in the wireless communication system supporting dual link.

The illustrative embodiments of the present invention provides a kind of method and apparatus that the MAC scheduler of each base station can independently be operated when being connected to and exchanging without extraneous information between two base stations of UE of support dual link.

The illustrative embodiments of the present invention provides the method and apparatus of a kind of MAC message format performing to maintain the activation/deactivation of assistant service community in the wireless communication system supporting dual link.

According to an illustrative embodiment of the invention, the method being performed activation/deactivation by the subscriber equipment (UE) in wireless communication system includes: based on the dual link configuration information received from base station via radio resource control (RRC) message, the dual link of configuration and at least two different base station; The configuration activation/deactivation information for the Serving cell (SCell) of described UE is received respectively from described at least two different base station; And based on the information of the timing advance group about comprising the Serving cell provided by base station or about providing configuration for the information of base station of the Serving cell of described UE, optionally apply described activation/deactivation information to Serving cell.

Another exemplary embodiment according to the present invention, subscriber equipment (UE) for performing the activation/deactivation of Serving cell including: receiver, for receiving for carrying out the dual link configuration information of dual link with at least two base station from base station via radio resource control (RRC) message, and receive the activation/deactivation information configuring the Serving cell for described UE; Determine unit, for based on the information of the timing advance group about comprising the Serving cell provided by base station or about providing configuration for the information of the base station of the Serving cell of described UE, for configuration for each Serving cell of described UE, it is determined that this Serving cell is by which base station in described at least two base station to be provided; And applying unit, for determining according to described, optionally application configuration is for the activation/deactivation information of the Serving cell of described UE.

By generating activation/deactivation MAC control element (CE) information and sending this activation/deactivation MACCE information to UE, each base station can maintain existing message format. It is to say, each base station can individually send activation/deactivation MACCE to UE. Therefore, this embodiment of the present invention makes each MAC scheduler of each base station can carry out independent operation when carrying out extraneous information exchange between two base stations.

Accompanying drawing explanation

Fig. 1 is the schematic diagram of the network structure illustrating wireless communication system.

Fig. 2 is the block diagram illustrating the radio protocol architecture for user plane;

Fig. 3 is the block diagram illustrating the radio protocol architecture for controlling plane;

Fig. 4 is the schematic diagram of the structure illustrating the carrying service in wireless communication system.

Fig. 5 illustrates the schematic diagram that the dual link for subscriber equipment configures.

Fig. 6 is the schematic diagram illustrating the user plane structure for dual link.

Fig. 7 to Figure 11 illustrates carrying out the schematic diagram of the protocol architecture of base station in downlink transmission situation for user plane.

Figure 12 is for illustrating the schematic diagram of the structure of medium access control protocol data units (MACPDU);

Figure 13 is the schematic diagram of the structure illustrating MAC sub-header;

Figure 14 is for illustrating the schematic diagram of the structure of MAC control element (CE);

Figure 15 A is the schematic diagram illustrating the activation/deactivation information transmitting Serving cell according to exemplary embodiment of the invention.

Figure 15 B is when special services community is similar to the schematic diagram transmitting activation/deactivation information when main Serving cell has phase coactivation characteristic according to exemplary embodiment of the invention;

Figure 15 C is the schematic diagram of the activation/deactivation information transmitting Serving cell according to another exemplary embodiment of the present invention;

Figure 16 is the schematic diagram of the activation/deactivation information transmitting assistant service community according to the another illustrative embodiments of the present invention.

Figure 17 is the schematic diagram of the activation/deactivation information being received Serving cell according to exemplary embodiment of the invention by subscriber equipment.

Figure 18 is the schematic diagram of the activation/deactivation information being transmitted Serving cell according to exemplary embodiment of the invention by base station.

Figure 19 is the schematic diagram of the activation/deactivation information being transmitted Serving cell according to exemplary embodiment of the invention by dominant base.

Figure 20 is the schematic diagram of the activation/deactivation information being transmitted Serving cell by assistant base station according to exemplary embodiment of the invention.

Figure 21 be the activation/deactivation information for Serving cell according to exemplary embodiment of the invention transmission equipment and receive equipment schematic diagram.

Detailed description of the invention

Below with reference to accompanying drawing (illustrating the illustrative embodiments of the present invention in it), the illustrative embodiments of the present invention is described more comprehensively. In accompanying drawing and detailed description, unless stated otherwise, identical accompanying drawing labelling is understood to refer to identical element, feature and structure. When illustrative embodiments is described, it is possible to the detailed description to well-known configurations or function can be omitted for clear and succinct purpose.

Further, cordless communication network is related in this description carried out, and the operation performed in cordless communication network can control to perform in the process of network and transmission data or can perform in the subscriber equipment being connected to described cordless communication network in the system (such as, base station) controlling wireless network.

Fig. 1 illustrates the network structure of the evolved Universal Mobile Telecommunications System (E-UMTS) of the example as wireless communication system. This E-UMTS can access (E-UTRA) system, Long Term Evolution (LTE) system or LTE upgrading (LTE-A) system for Evolved UMTS Terrestrial radio. Described radio communication line may utilize multiple access scheme, such as CDMA (CDMA), time division multiple acess (TDMA), frequency division multiple access (FDMA), OFDM (OFDMA), single carrier-FDMA (SC-FDMA), OFDM-FDMA, OFDM-TDMA and OFDM-CDMA.

Referring to Fig. 1, evolved-UMTS Terrestrial Radio Access Network network (E-UTRAN) comprises base station (eNB: enode b) 20, and this base station 20 provides and controls plane (CP) and user plane (UP) to subscriber equipment (UE) 10.

Described UE10 can be fixed or portable, and this UE10 can be referred to as movement station (MS), senior MS (AMS), user terminal (UT), subscriber station (SS), wireless device etc.

Described base station 20 can be and the described UE10 website communicated, and base station 20 can be referred to as base station (BS), base transceiver system (BTS), access point (AP), femto base station (femto-eNB), femto base station (slightly-eNB), home base stations (local eNB), repeater etc. Described base station 20 can via the mutually physical connection such as optical fiber or Digital Subscriber Line (DSL), and can via the mutual receiving and transmitting signal of Xn interface or message. Fig. 1 illustrates an example, and wherein base station is connected with each other via X2 interface.

Hereinafter, the logic between entity is connected and is described, and the detailed description of physical connection between these entities is not provided. As it is shown in figure 1, base station 20 can be connected to evolution block core net network (EPC) 30 via S1 interface. More specifically, base station 20 can be connected to mobile management entity (MME) via S1-MME interface, and can be connected to gateway (S-GW) via S1-U interface. Base station 20 can send and from the contextual information of MME reception UE10 and about the UE information to ambulant support to MME via S1-MME interface. Further, base station 20 can send to S-GW via S1-U interface and receive for providing, to each UE10, the data serviced from S-GW.

Although not in shown in Fig. 1, but EPC30 can comprise MME, S-GW and grouped data network gateway (P-GW). MME has the access information of UE10 or the ability information of UE10, and this information can be used for the mobile management of UE10. S-GW can for have the E-UTRAN gateway as terminal node, and P-GW can for have the packet data network (PDN) gateway as terminal node.

The combination of E-UTRAN and one or more EPC30 can be referred to as Evolved Packet System (EPS). All Business Streams from radio link (UE10 coupled to base station 20 by this radio link) to PDN (this PDN provides the connection to service entities) all can be performed based on Internet protocol (IP).

Radio interface between UE10 and base station 20 can be referred to as " Uu interface ". Radio interface protocol layers between UE10 and network can comprise layer 1 (L1) defined in third generation establishment of cooperatives plan (3GPP) protocol specification for wireless communication system (such as, UMTS, LTE, senior LTE etc.), layer 2 (L2) and layer 3 (L3). In these layers, being included in the physical layer in layer 1 uses one or more physical channels to provide information transmission service, comprise radio resource control (RRC) layer in layer 3 and send and receive message, and control the radio resource between UE10 and network.

Fig. 2 is the block diagram illustrating the radio protocol architecture for user plane, and Fig. 3 is the block diagram illustrating the radio protocol architecture for controlling plane. User plane is the protocol stack for user data transmission, and controlling plane is the protocol stack for control signal transmission.

Physical layer (PHY) referring to Fig. 2 and Fig. 3, UE provides messaging service via physical channel to the higher level of UE, and the physical layer of base station (PHY) provides messaging service via physical channel to the higher level of base station. Physical layer coupled to medium access control (MAC) layer via transmission channel, and this MAC layer is the higher level of physical layer. Data are transmitted between MAC layer and physical layer via transmission channel. According to the method carried out data transmission via wave point, transmission channel can be classified. Further, data are transmitted (that is, between physical layer and the physical layer of base station of UE) between the different physical layers via physical channel. This physical channel can be modulated based on OFDM (OFDM) scheme, and time-frequency domain can be utilized by multiple antennas using as radio resource.

Such as, physical downlink control channel (PDCCH) as one of physical channel can to UE assigned paging channel (PCH) and downlink sharied signal channel (DL-SCH) resource, transmit mixed automatic repeat request (HARQ) information about DL-SCH to UE, and transmit the uplink scheduling license of instruction allocation of uplink transmission resources to UE. Further, physical control format indicator channel (PCFICH) can be used for the quantity of the OFDM symbol of PDCCH to UE instruction, and PCFICH is transmitted in each subframe. Physics HARQ indicator channel (PHICH) can transmit HARQ answering/no answering (ACK/NAK) channel in response to ul transmissions. Physical uplink control channel (PUCCH) can transmit the uplink control information (such as, HARQACK/NACK) in response to downlink transmission, dispatch request and channel quality instruction (CQI). Physical uplink link shared channels (PUSCH) transmits uplink shared channel (UL-SCH). Configuration according to base station or request, PUSCH can comprise channel condition information (CSI), such as HARQACK/NACK and CQI.

MAC layer can mapping between logical channels and transmission channel, and MAC Service Data Unit (SDU) can be performed from logic channel to the multiplexing of transmission block (this transmission block will be transmitted on transport channels to physical channel) and from the MACSDU of logic channel from from the physical layer demultiplexing by the transmission block of transmission channel. MAC layer also provides via logic channel and services to radio link control (RLC) layer. Logic channel comprises for transmitting the control channel controlling plane information and for transmitting the Traffic Channel of user plane information. The example providing the service to higher level from MAC layer comprises data transmission or radio resources allocation.

The function of rlc layer can comprise the concatenation of RLCSDU, segmentation and restructuring. In order to ensure the various service quality (QoS) needed for radio bearer (RB), rlc layer can provide three kinds of operator schemes: transparent mode (TM), Unacknowledged Mode (UM) and affirmation mode (AM).

Described TM may be used primarily for initially connecting configuration.

Described UM is used for real-time Data Transmission (such as data stream or Internet ready phones (VoIP)), and in UM, data transmission bauds has precedence over data integrity. On the other hand, in AM, data integrity has precedence over data transmission bauds, and this is suitable for large-capacity data transmission or the data transmission that transmission delay is less sensitive. Based on each EPS the being configured to connect to UE QoS information carried, base station can determine that corresponding to the RLC pattern in the respective EPS radio bearer carried, and configures the parameter in RLC to meet QoS.

The size of RLCSDU is transformable, and this size can byte be unit. If from lower level (such as MAC layer) notification transmission opportunity, then rlc protocol data cell (PDU) can be determined and be transferred into lower level. Described transmission opportunity can be notified together with the overall size of the RLCPDU that will be transmitted. Further, it is possible to individually notify described transmission opportunity and the overall size of RLCPDU that will be transmitted.

The function of packet data polymerized agreement (PDCP) layer in user plane can include user data transmission, header-compressed and encryption and control plane data transfer and encryption/integrity protection.

Referring to Fig. 3, rrc layer controls and configures, reconfigures and logic channel, transmission channel and physical channel that the release of radio bearer (RB) is relevant. RB can refer to the logical path transmitted for the data between UE and network provided by layer 1 (PHY layer) and layer 2 (MAC layer, rlc layer and PDCP layer). RB configuration refers to the configuration of the characteristic of channel and radio protocol layer for providing special services and the configuration of each parameter and operational approach. RB can comprise signaling RB (SRB) and data RB (DRB). Described SRB can be used as controlling the channel of the RRC information in plane and Non-Access Stratum (NAS) message in transmission, and DRB can be used as the channel of the user data in transmission user plane.

As the higher level of rrc layer, NAS layer can perform session management, mobile management etc. If there is RRC between the rrc layer of UE and the rrc layer of E-UTRAN to be connected, then UE is in RRC connection status. If being absent from RRC between the rrc layer of UE and the rrc layer of E-UTRAN to be connected, then UE is in RRC idle condition.

In order to from UE transmit user data to external the Internet network or from external the Internet network receive user data to UE, need on the various paths between the mobile network's entity being present between UE and external the Internet network assigned resources. Carrying refers to the path between mobile network's entity, and assignment of resources makes the data transmission in this path be possibly realized.

In fig. 4 it is shown that for the path providing end-to-end service between UE and internet network. At this, end-to-end service refers to the service needing following path for the data, services between UE and internet network: the path (external bearer) between path (EPS carrying) and P-GW and external the Internet network between UE and P-GW. External path can be the carrying between P-GW and internet network.

In order to data are sent to external the Internet network from UE, UE transfers data to base station (eNB) via RB. Afterwards, the data being received from UE are sent to S-GW via S1 carrying by base station. The data being received from base station are sent to P-GW via S5/S8 carrying by this S-GW, and the data being received from S-GW are sent to the destination in external the Internet network via external bearer by this P-GW afterwards.

Similar, in order to the data from external the Internet network are sent to UE, data can be transmitted from UE to the rightabout of the data transfer direction of external the Internet network via above-mentioned carrying according to above-mentioned.

As it appears from the above, can for the different carrying of each interface definition in wireless communication system, so that it is guaranteed that the independence between interface. Hereinafter, will in more detail the carrying of each interface be described.

The carrying that wireless communication system provides can be referred to as EPS carrying. This EPS carrying can be configured in path between UE and P-GW to transmit IP operation with specific QoS. Described P-GW can receive IP stream from internet network or transmission IP flow to internet network. Each EPS carrying can by indicating the QoS of the characteristic in transmission path to determine that parameter configures. One or more EPS carrier wave can be configured for UE, and an EPS carrier wave may indicate that E-UTRAN radio access bearer (E-RAB) and a S5/S8 carrying concatenation.

RB is present between UE and base station, and transmits the packet of EPS carrying. Specific RB and corresponding EPS carrying/E-RAB has man-to-man mapping relations.

S1 as the carrying being present between S-GW and base station carries transmission E-RAB packet.

S5/S8 is carried as the carrying of S5/S8 interface. S5 and S8 is carried as the carrying existed for the interface between S-GW and P-GW. If S-GW and P-GW belongs to same service provider, then there is S5 interface; If S-GW belongs to the service provider (public Land Mobile Network (PLMN) of being interviewed) of roaming service, P-GW belongs to subscribed service provider (local plmn), then there is S8 interface.

E-RAB indicates S1 carrying and the concatenation of corresponding RB. If there is E-RAB, then there are mapping relations between E-RAB and one EPS carrying. More specifically, a corresponding RB of EPS carrying, a S1 carrying or a S5/S8 carrying. S1 is carried as the carrying for the interface between base station and S-GW.

As it has been described above, RB comprises data RB (DRB) and signaling RB (SRB). But, in this description, for providing the DRB that the Uu interface that user services provides can be referred to as RB. Accordingly, it would be desirable to RB and the SRB as DRB is made a distinction. RB is the path by its transmission user plane data, and SRB transmits, by it, the path controlling panel data (the control message of such as NAS and rrc layer). Man-to-man corresponding relation is there is between RB/E-RAB and EPS carrying. In order to generate the DRB of coupling up-link and downlink, base station performs to map one to one between DRB and S1 carries, and stores mapping result. In order to generate S1 carrying and the S5/S8 carrying of coupling up-link and downlink, S-GW performs to map one to one between S1 carrying with S5/S8 carrying, and stores mapping result.

The type of EPS carrying comprises default bearing and dedicated bearer. If UE access to wireless communication network, this UE can be assigned IP address, and will set up PDN for this UE and connect and generate default EPS bearing. If setting up new PDN to connect, then can newly-generated default bearing. If the user while begin to use when using by service (such as, the Internet etc.) of default bearing default bearing cannot the service (such as, VoD services) of guaranteed qos, then will generate dedicated bearer according to demand. The different QoS of the available QoS configured from existing carrying is to configure dedicated bearer. QoS for dedicated bearer determines that parameter can be provided by strategy and charging rule functions (PCRF). In order to generate dedicated bearer, PCRF can pass through to store (SPR) from user property and receive the subscription information of user, it is determined that QoS determines parameter. Such as, the maximum quantity of the dedicated bearer generated can be 15, and has 4 carry and be not used for LTE system in these 15 dedicated bearers. Therefore, the maximum number of the dedicated bearer generated in LTE system can be 11.

EPS carrying comprise based on QoS determine parameter QoS category identifier (QCI) and distribution and retain priority (ARP). According to QCI resource type, EPS carrying can be divided into the carrying of carrying and the non-GBR type ensureing bit rate (GBR) type. Default bearing can not configure the carrying as non-GBR type, and dedicated bearer can be configured as the carrying of GBR type or the carrying of non-GBR type. Except QCI and ARP, the carrying of GBR type has GBR and the Maximum Bit Rate (MBR) of determining parameter as QoS. After the QoS demand of the wireless communication system determined as EPS carrying, determine specific QoS for each interface. Carrying is configured by each interface according to the QoS demand of himself.

Fig. 5 is the schematic diagram illustrating the dual link for subscriber equipment.

Exemplarily, Fig. 5 illustrates a situation: UE550 enters the overlapping region between the coverage of the coverage of the macrocell F2 of dominant base 500 and the small cell F1 of assistant base station 510.

In the case, in order to support the excessive data service of the small cell F1 by assistant base station 510 and maintain the existing wireless electrical connection of macrocell F2 by dominant base 400 and data, services connects simultaneously, network configures dual link for UE550. Therefore, the data arriving dominant base 500 can be sent to UE550 by assistant base station 510. More specifically, frequency band F2 can be distributed to dominant base 500, and frequency band F1 is distributed to assistant base station 510. UE550 can receive service via frequency band F1 from assistant base station 510, receives service via frequency band F2 from dominant base 500 simultaneously. As it has been described above, dominant base 500 utilizes frequency band F2, and assistant base station 510 utilizes frequency band F1, but each aspect of the present invention is not limited to this. Dominant base 500 and assistant base station 510 may utilize identical frequency band F1 or F2.

For dual link, configurable UE, main enode b (MeNB) and at least one auxiliary enode b (SeNB). As shown in Figure 6, the splitting scheme according to user plane data, there are three kinds of options for dual link. Such as, Fig. 6 illustrates the theory of three kinds of different options of the downlink transmission for user plane data.

Option one: S1-U interface has the dominant base as terminal node and assistant base station. In this option, each base station (each in MeNB and SeNB) carries (carrying #2 for the EPS carrying #1 of MeNB, the EPS for SeNB) communicating downlink data via configuring the EPS for UE. Owing to user plane data can split (split) at core network (CN) place, therefore this option can be referred to as " CN segmentation ".

Option 2:S1-U interface have only dominant base as terminal node. In this option, although S1-U only has dominant base as terminal node, but each base station is mapped with a carrying and splits without to carrying.

Option 3:S1-U interface have only dominant base as terminal node. In this option, owing to carrying is split, this option can be referred to as " carrying segmentation ". According to this " carrying segmentation " scheme, owing to a carrying can be split to multiple base stations, therefore data can be divided into two or more streams and be transmitted. Owing to data are transmitted by multiple streams, therefore " carrying segmentation " scheme should can be referred to as between multithread, multinode (eNB) transmission, eNB carrier aggregation etc.

About protocol architecture, if S1-U interface has only dominant base and as terminal node (that is, the situation of option 2 or option 3), then the protocol layer in assistant base station may be needed to support segmentation or weight fragmentation procedure. This is because physical interface and fragmentation procedure tight association, and when using imperfect backhaul, segmentation or weight fragmentation procedure need the node corresponding to transmitting RLCPDU. Therefore, the protocol architecture of the dual link on rlc layer or upper layer can based on considered below and be configured:

APDCP layer is independently present in the configuration in each base station: this configuration can be referred to as independent PDCP type. In the configuration, each base station can utilize existing LTE layer 2 protocol to operate in carrying. This configuration can be applicable to above-mentioned option one, option 2 and option 3.

BRLC layer is independently present in the configuration in each base station: this configuration can be referred to as independent RLC type. At this configuration weight, S1-U interface only has that dominant base is as terminal node, and PDCP layer exists only in dominant base. In " carrying segmentation " (option 3) scheme, network and UE have rlc layer separately, and each rlc layer has independent RLC carrying.

CRLC layer comprises the configuration of " the main rlc layer " in dominant base and " from rlc layer " in assistant base station. This configuration can be referred to as principal and subordinate's RLC type. In the configuration, S1-U interface have only dominant base as terminal node. Dominant base comprises PDCP layer and part rlc layer (main rlc layer), and assistant base station comprises the rlc layer (from rlc layer) of another part. UE comprise one with described main rlc layer and from rlc layer pairing rlc layer.

Therefore, dual link configuration can change along with the various combination (as shown in Fig. 7 to Figure 11) of above-mentioned option and type.

Referring to Fig. 7, S1-U interface has dominant base and assistant base station as terminal node, and each base station has independent PDCP layer (independent PDCP type). In the configuration, dominant base and each in assistant base station comprise PDCP layer, RCL layer and MAC layer, and the respective EPS carrying that each base station is used for UE via configuration transmits down link data.

In the configuration, it may be unnecessary to the packet of dominant base buffering or place's reason assistant base station transmission, thereby increases and it is possible to there is the advantage RDCP/RLC and GTP-U/UDP/IP not being affected or having no significant effect. Further, can for there is less demand between dominant base and the back haul link of assistant base station. Also can there is such advantage: assistant base station can support the content buffering of UE and the locally outburst that are connected by dual link function, and owing to being no longer necessary to the stream between control dominant base and assistant base station, all business need not be route by dominant base.

Referring to Fig. 8, S1-U interface has only dominant base and, as terminal node, does not perform carrying segmentation, and PDCP layer is independently present in each base station (independent PDCP type). In the case, PDCP layer, rlc layer and MAC layer are present in each dominant base and assistant base station, and the PDCP layer of dominant base links to the PDCP layer of assistant base station by Xn interface. At this, Xn interface can be the X2 interface being defined between the base station in LTE system.

This situation has the advantage that the mobility of assistant base station is hidden in core network, RDCP/RLC and GTP-U/UDP/IP is not made significant difference or not impact, and process is only limitted to route to the packet of assistant base station and need not cushion.

Referring to Fig. 9, S1-U interface has only dominant base and, as terminal node, does not carry out carrying segmentation, and rlc layer is independently present in each base station (independent RLC type). In the case, dominant base has PDCP layer, rlc layer and MAC layer, and assistant base station only has rlc layer and MAC layer. The PDCP layer of dominant base is separated according to load level (bearerlevel), and a PDCP layer in them is connected to the rlc layer of assistant base station by Xn interface.

The mobility that the advantage of this situation is assistant base station is hidden in core network, and is absent from the safety effects needing to be encrypted at dominant base place. Additionally, RLC process can be transferred to assistant base station by dominant base, and RLC do not impacted or only cause slight influence.

Referring to Figure 10, S1-U interface has only dominant base and, as terminal node, there is carrying segmentation, and rlc layer is independently present in each base station (independent RLC type). In the case, dominant base has PDCP layer, PLC layer and MAC layer, and assistant base station only has rlc layer and MAC layer. Each in the PDCP layer of dominant base, rlc layer and MAC layer is separated all in accordance with load level, and a PDCP layer in them is connected to the rlc layer of dominant base, and is connected to the rlc layer of assistant base station by Xn interface.

The advantage of this situation is in that the mobility of assistant base station is hidden in core network, is absent from the safety effects needing to be encrypted at dominant base place, and when assistant base station changes, it is not necessary between these assistant base stations, forward data. Additionally, RLC process can be transferred to assistant base station by dominant base, and RCL will not be impacted or cause slight influence, utilize and be possibly realized for the dominant base of same carrying and the mobile resources of assistant base station, and due to dominant base available when changing assistant base station, therefore for the mobility of assistant base station, there is less requirement.

Referring to Figure 11, S1-U interface has only dominant base and, as terminal node, carries out carrying segmentation, and the rlc layer of dominant base is main rlc layer, and the rlc layer of assistant base station is from rlc layer (that is, principal and subordinate RLC type) simultaneously. In the case, there is PDCP layer, rlc layer and MAC layer in dominant base, and in assistant base station, only exist rlc layer and MAC layer. Additionally, PDCP layer, rlc layer and MAC layer each separate all in accordance with load level, a rlc layer in them is connected to the rlc layer (from layer) of assistant base station as main rlc layer by Xn interface.

The advantage of this situation is in that the mobility of assistant base station is hidden in core network, is absent from the safety effects needing to be encrypted at dominant base place, and when assistant base station changes, it is not necessary between these assistant base stations, forward data. Additionally, RCL will not be impacted or cause slight influence, utilize and be possibly realized for the dominant base of same carrying and the mobile resources of assistant base station, and due to dominant base available when changing assistant base station, therefore for the mobility of assistant base station, there is less requirement. Additionally, packet loss between dominant base and assistant base station can shielded by the ARQ of RLC (cover).

Hereinafter, will be described in activation and the deactivating operation of assistant service community in the carrier aggregation (CA) of wireless communication system.

When UE is configurable for CA, the RRC that UE has with network is connected. This also can be applied to when dual link is configured. In order to carry out RRC establishment of connection or re-establish or switch over process, some Serving cell provides Non-Access Stratum (NAS) mobility information, for instance tracing area ID (TAI). Hereinafter, some Serving cell described can be referred to as main Serving cell (PCell). This PCell can comprise a pair downlink principal component carrier wave (DLPCC) and up-link principal component carrier wave (ULPCC).

According to UE ability (such as, the hardware capabilities of UE), assistant service community (being referred to as " Scell ") and PCell can be included in Serving cell group. Assistant service community can be configured to only comprise downlink auxiliary component carrier wave (DLSCC), maybe can be configured to contain a pair DLSCC and up-link auxiliary component carrier wave (ULSCC).

Serving cell collection (group) can not be configured to comprise PCell and at least one SCell, or only comprises at least one SCell. Described PCell can be changed by handoff procedure, and can be used for transmitting PUCCH. Described PCell will not change to deactivation status, but assistant service community can change to deactivation status.

If experience PCell radio link failure (RLF), then may trigger RRC and re-establish process, if but radio link failure (RLF) of experience assistant service community, described RRC re-establishes process possibility and will not be triggered.

Process (its be dedicated signaling) can be configured by RRC perform the configuration of assistant service community to Serving cell group or reconfigure or described assistant service community is from the release of Serving cell group. If new assistant service community is configured into Serving cell group, then to transmit the system information of new assistant service community in RRC reconfiguration message. Therefore, there is no need to the change of the system information to assistant service community and carry out supervision process.

As it has been described above, when UE is arranged to CA, the activation/deactivation mechanism for assistant service community can be supported, to optimize the battery consumption of UE. If assistant service community is in deactivation status, then UE need not receive the PDCCH corresponding to this assistant service community or physical down link sharing channel (PDSCH), and UE can not perform any ul transmissions via corresponding assistant service community. Additionally, UE can not carry out CQI (CQI) measures operation. On the contrary, if assistant service community is active, then UE can receive PDCCH and PDSCH. At this, if UE is configured to monitor the PDCCH for assistant service community, then perform described reception. It addition, UE can perform CQI measures operation.

Described activation/deactivation mechanism can be performed based on the combination of MAC control element (CE) and packet data inactivity timer. MACCE indicates the activation/deactivation state of each assistant service community by bit, " 0 " instruction deexcitation, and " 1 " instruction activates. Described MACCE can pass through independently to indicate the activation/deactivation state of each assistant service community corresponding to the bit of each assistant service community, and this instruction can be configured to bitmap form.

Although can for each assistant service cell configuration and keep packet data inactivity timer, but for each packet data inactivity timer, all assistant service communities are respectively provided with identical value. The value of this packet data inactivity timer can be configured by RRC signaling.

If UE receives the RRC reconfiguration message (wherein this RRC reconfiguration message comprises interpolation assistant service community) not comprising mobility control information (MCI), then the original state of described assistant service community is " deexcitation " state. In the case, assistant service community can't be changed or will not be reconfigured by described RRC reconfiguration message, and it can keep state of activation or deactivation status not to change state.

On the contrary, if UE receives the RRC reconfiguration message comprising MCI (that is, hand-off process), then all assistant service communities all can change to " deexcitation " state.

Figure 12 is for illustrating the schematic diagram of the structure of medium access control protocol data units (MACPDU), Figure 13 is the schematic diagram of the structure illustrating MAC sub-header, and the schematic diagram that Figure 14 is the structure illustrating MAC control element (CE). Below with reference to Figure 12 to Figure 14, the structure of MACCE is made a more detailed description.

Figure 12 illustrates the structure of the MACPDU transmitted for downlink sharied signal channel (DL-SCH) transmission and uplink shared channel (UL-SCH). As shown in figure 12, MACPDU can comprise a MAC header, 0 or at least one MACCE, 0 or at least one MACSDU and fill. At this, MAC header and MACSDU can have the length of change, and described filling can be included in described MACPDU alternatively.

Described MAC header can comprise one or more sub-header. Each sub-header is corresponding to the filling of MACSDU, MACCE or MACPDU. It is to say, the order of the sub-header of MACPDU is corresponding to the order of corresponding MACSDU, MACCE and filling.

MACCE for the activation/deactivation of Serving cell corresponds to the sub-header type (R/R/E/LCID type) shown in Figure 13. As shown in figure 13, " R " is reserved bit, and is in other purposes and is not used by, and " E " is the bit whether instruction sub-header comprises extra 8 bit. " LCID " represents the logical message of MACSDU or MACCE corresponding to described sub-header.

As an example, the LCID value for downlink sharied signal channel can be defined as shown in table 1.

Table 1

Referring to table 1, the LCID value for the activation/deactivation of one or more Serving cells is set to " 11011 ". Therefore, with there are " 11011 " be interpreted as shown in figure 14 as the MACCE that the sub-header in the MACPDU of LCID value is corresponding.

Figure 14 illustrates the structure with the MACCE fixing 8 bit lengths. In fig. 14, if there is assistant service community to be configured with Scell index " 1 ", then C₁Field indicates this to have the activation/deactivation state of the assistant service community of Scell index " 1 ". Similar, if there is assistant service community to be configured with index " 2 ", then C₂Field indicates this to have the activation/deactivation state of the assistant service community of Scell index " 2 ". At this, UE can ignore the field of the assistant service community not being configured to this UE. C_iField is set to " 1 " to indicate the SCell with SCell index i to be activated, and C_iField is set to " 0 " and then indicates the SCell with SCell index i to be deactivated. " R " is reserved bit, and it is always set to " 0 ".

Figure 15 A is the schematic diagram of the method illustrating the activation/deactivation information transmitting assistant service community according to exemplary embodiment of the invention.

If UE is configured for dual link by dominant base and assistant base station, then this UE can receive activation/deactivation MACCE message via the main Serving cell involved by each described base station or assistant service community. Hereinafter, the activation/deactivation MACCE message being received from dominant base (MeNB) can be referred to as the first activation/deactivation MACCE message, and the activation/deactivation MACCE message being received from assistant base station (SeNB) can be referred to as the second activation/deactivation MACCE message.

In the case, as shown in fig. 15, described UE is from the first activation/deactivation MACCE message identification the information applying the one or more activation/deactivation designators about one or more assistant service communities of relating to MeNB, and ignores one or more activation/deactivation designators of one or more assistant service communities about relating to SeNB. In addition, described UE is from the second activation/deactivation MACCE message identification the information applying the one or more activation/deactivation designators about one or more assistant service communities of relating to SeNB, and ignores one or more activation/deactivation designators of one or more assistant service communities about relating to MeNB.

As mentioned above, described UE can determine that configuring the assistant service community for this UE with which eNB is associated, that is, described UE identifies which eNB is configured with each assistant service community for this UE, optionally to apply or to ignore the activation/deactivation designator of assistant service community in activation/deactivation MACCE message. For realizing this purpose, UE may utilize such as timing advance group (TAG). TAG can be the Serving cell group comprising following community: the timing reference cell of the timing reference between using one or more communities of identical timing advance value and identical timing reference or comprising the one or more communities being configured with up-link (UL).

Such as, if first service community and second service community belong to TAG1 and second service community is timing reference cell, then identical timing advance value TA1 is applied to first service community and second service community, and TA1 is applied in the downlink synchronization timing of the downlink component carrier (DLCC) of first service cell reference second service community. If first service community and second service community are belonging respectively to TAG1 and TAG2, then first service community can be the timing reference cell in TAG1, and second service community can be the timing reference cell in TAG2, and the different timing advance value of TA1 and TA2 can be applied respectively to first service community and second service community. TAG can comprise main Serving cell, at least one assistant service community or described main Serving cell and at least one assistant service community. Being as noted previously, as and can come Differentiated Services community in units of TAG, therefore the Serving cell in different TAG can be provided by different base station.

TAG can be classified as main timing advance group (pTAG) and shift to an earlier date group (sTAG) with auxiliary timing. PTAG is the TAG comprising main Serving cell, and sTAG is the TAG only comprising assistant service community. Therefore, UE can recognize, and is included in the assistant service community for being provided by MeNB, the assistant service community in pTAG, and is included in the assistant service community for being provided by SeNB, the assistant service community in sTAG. At this, except other sTAG, sTAG also can comprise the sTAG with the only SCell that MeNB provides. Therefore, UE can from the information of the MeNB reception sTAG about only comprising the assistant service community provided by MeNB, and utilize this information, thus UE can identify the sTAG comprising the MeNB assistant service community provided from the sTAG comprising the assistant service community provided by SeNB. This can via RRC information transmission about the information comprising the sTAG of the assistant service community provided by MeNB. For transmitting for this RRC information, the rrc layer of network or dominant base can perform RRC reconfiguration course.

As it has been described above, by using such as TAG, UE can be used for each assistant service community of this UE for configuration, it is determined that this assistant service community is arranged to which base station (MeNB or SeNB). Therefore, when MeNB and SeNB from dual link receives activation/deactivation MACCE message to UE respectively, UE optionally applies or ignores the activation/deactivation designator for SCell being included in each activation/deactivation MACCE message.

More specifically, as shown in fig. 15, dominant base comprises the assistant service community (SCell) with SCell index 1, and assistant base station comprises SCell and indexes the SCell of respectively 3,4 and 6. In the case, when UE receives the first activation/deactivation MACCE message, by use comprise SCell involved by MeNB information (namely, information about TAG), UE can recognize the information of activation/deactivation designator about the SCell with SCell index 1 from described first activation/deactivation MACCE message, and ignores the information of activation/deactivation designator about the SCell with SCell index 3,4 and 6 involved by SeNB.

In an identical manner, when UE receives the second activation/deactivation MACCE message, by use comprise SCell involved by SeNB information (namely, information about TAG) (at this, (about the TAG) information of being somebody's turn to do is provided by dominant base), UE can recognize the information of activation/deactivation designator about the SCell with SCell index 3,4 and 6 from described second activation/deactivation MACCE message, and ignores the information of activation/deactivation designator about the SCell with SCell index 1 involved by MeNB. RRC signaling from dominant base comprises the information of the SCell of base station configuration.

Further, base station can pass through RRC information notice UE provides the information of SCell about which base station. In the case, RRC information can comprise for configuring each SCell for UE, is used for the information of each base station of the SCell of UE about configuration. In the case, RRC information can not comprise the information about the base station (that is, dominant base) providing PCell, because this PCell is related to by dominant base.

Therefore, even if UE have received multiple activation/deactivation MACCE message, for the SCell of this UE, UE still can identify which base station is configured with the SCell for this UE for each configuration based on the information being included in RRC information. Therefore, UE optionally applies or ignores the activation/deactivation designator for SCell being included in each activation/deactivation MACCE message.

As shown in fig. 15b, PUSCCH in SCell is configured with the identical activation/deactivation characteristic being similar to PCell, UE can ignore the instruction that is included in activation/deactivation MACCE message and be configured with the bit of activation/deactivation of SCell of PUCCH for this. This SCell being configured with PUCCH can be referred to as " specific SCell ".

The SCell index being connected to the UE that each base station of UE provides in dual link function can independently be assigned. Such as, the PCell that dominant base provides can have SCell index 0, and the SCell that dominant base provides can have SCell index 1 to 7. On the contrary, SCell index 0 can be assigned to SCell that is that assistant base station provides and that be configured with PUCCH, and SCell index 1 to 7 can be assigned to that assistant base station provides but not configure the SCell of PUCCH.

As it has been described above, when SCell index is independently assigned by each base station, activation/deactivation message format and the method by UE reception application activating/deexcitation message can be configured to as follows:

As shown in figure 15 c, UE can identify and apply the information of the activation/deactivation designator for SCell as described above by the first activation/deactivation MACCE message. Similar, UE can recognize and apply the information of the activation/deactivation designator of the relevant assistant service community by the second activation/deactivation MACCE message offer as described above.

In other words, after receiving the first activation/deactivation MACCE message, UE can only recognize the information of the activation/deactivation designator about the SCell involved by dominant base, and ignores the information of the activation/deactivation designator about the SCell involved by other base stations. Additionally, after receiving the second activation/deactivation MACCE message, UE can only recognize the information of the activation/deactivation designator about the SCell involved by assistant base station, and ignores the information of the activation/deactivation designator about the SCell involved by other base stations. At this, UE has received the RRC information comprising SCell configuration information (this configuration information indicates which base station is configured with which SCell), and UE receives this RRC information from dominant base.

Meanwhile, assistant base station deexcitation can not be configured with the SCell of PUCCH. At this, the LSB (least significant bit) of the position bit being provided and being configured with the SCell index of PUCCH corresponding to instruction assistant base station can be defined as reserved bit. Additionally, the SCell being configured with PUCCH can have the identical activation/deactivation characteristic of the PCell being similar in dominant base, and the SCell being configured with PUCCH can be defined as being similar to the identical title of PCell.

Figure 16 is the schematic diagram of the activation/deactivation information transmitting assistant service community according to another exemplary embodiment of the present invention.

If UE is connected with multiple base stations in dual link function, PCell or SCell that UE can pass through involved by dominant base receives activation/deactivation MACCE message from this dominant base. In the case, as shown in figure 16, when the activation/deactivation state of the SCell involved by assistant base station changes, the information changing state about one or more SCell can be informed to dominant base by the MAC scheduler of assistant base station. At this, the activation/deactivation information of the SCell involved by this assistant base station can be sent to dominant base by MACCE message or the message format determined by X2 or Xn interface by assistant base station.

Dominant base can pass through the activation/deactivation message of the SCell involved by this dominant base and be received from the activation/deactivation information of assistant base station and be polymerized to configure MACCE message, and can transmit this MACCE message to UE.

When dominant base transmits the activation/deactivation MACCE message of the SCell involved by this dominant base, this dominant base can confirm that whether the activation/deactivation of the UE SCell involved by assistant base station connected in dual link function changes.

Further, dominant base can check whether the packet data inactivity timer of the SCell involved by assistant base station expires. Such as, carrying out synchronize by the operation of the packet data inactivity timer of the SCell by belonging to assistant base station with UE, dominant base can recognize the time expiration of the packet data inactivity timer of the SCell involved by assistant base station each. Therefore, if the SCell in assistant base station is transferred to deactivation status owing to the packet data inactivity timer of this SCell expires, dominant base can control this SCell of deexcitation UE by the activation/deactivation state of this SCell is set to " 0 ", and without receiving any information from assistant base station.

Further, if assistant base station changes the value of the packet data inactivity timer of each SCell involved by this assistant base station, the value after packet data inactivity timer change can be sent to dominant base by this assistant base station. It is to say, SCell and the SCell in dominant base in assistant base station has different packet data inactivity timer values.

According to other aspects, the operation of the packet data inactivity timer of the SCell belonging to assistant base station can not be defined by dominant base. In the case, UE receives a packet data inactivity timer value of this UE from dominant base, and UE controls this packet data inactivity timer value and is applied to only SCell involved by dominant base. Can not be defined the packet data inactivity timer of the SCell involved by assistant base station or be fixed an infinitely-great value. Therefore, dominant base can maintain the active information of the SCell involved by assistant base station and the information maintained is sent to UE, until dominant base receives the information indicating the activation/deactivation state of the SCell involved by this assistant base station to change from described assistant base station.

Figure 17 is the schematic diagram receiving the activation/deactivation information of assistant service community of the UE according to exemplary embodiment of the invention.

If UE exists, then UE herein has and carries out the ability of dual link function with dominant base and assistant base station, and described dominant base transmits dual link configuration information to UE via RRC information.

If UE receives the RRC information (S1710) comprising dual link configuration information, then UE configures the dual link (S1720) with dominant base and assistant base station based on the dual link configuration information received. At this, RRC information can comprise the information of the sTAG about comprising the SCell that dominant base provides or about information relevant with which base station for which SCell. It can comprise the SCell configuration information for each base station, thus based on the SCell of each base station comprised in the RRC information information configured, UE can determine SCell by which base station is configured, for instance, the SCell information of each base station. If being configured with dual link for UE, then UE can arrange selection application model, with the activation/deactivation information of the activation/deactivation information optionally applying the SCell being included in the first activation/deactivation MACCE message and the SCell that is included in the second activation/deactivation MACCE message.

If UE receives activation/deactivation MACCE message (S1730) respectively from each base station, then based on the SCell information comprised in RRC information, UE is for each SCell of this UE, it is determined which base station relates to the SCell which is configured in UE. Afterwards, according to determining result, UE optionally applies the activation/deactivation information of the SCell comprised in the dominant base of the first activation/deactivation MACCE message, and ignores the activation/deactivation information of other SCell belonging to other base stations from described first activation/deactivation MACCE message. In addition, UE optionally applies the activation/deactivation information of the SCell that the assistant base station from the second activation/deactivation MACCE message comprises, and ignores the activation/deactivation information (S1740) of other SCell belonging to other base stations from described second activation/deactivation MACCE message.

More specifically, for dual link, when UE receives the RRC information from MeNB, UE checks the SCell configuration information of each eNB, and wherein said RRC comprises the SCell configuration information of each eNB. It is to say, according to described RRC information, one or more SCell of MeNB are determined as a SCell group by described UE, and determine one or more SCell of SeNB as the 2nd SCell group. Afterwards, UE receives the MAC message of the one or more SCell of himself from each eNB, and this message is independently created for UE and sends.

Such as, UE checks the activation/deactivation MACCE transmitted by MeNB being identified as a MAC message, and determines the activation of the SCell group comprising described MeNB and the activation/deactivation MACCE of deactivation status. Additionally, UE checks the activation/deactivation MACCE transmitted by SeNB being identified as the 2nd MAC message, and determine the activation of the 2nd SCell group comprising described SeNB and the activation/deactivation MACCE of deactivation status.

Based on above-mentioned configuration, owing to each eNB is able to maintain that the activation/deactivation MAC control element (CE) of original MAC message format, and transmit this activation/deactivation MACCE to UE, therefore based on himself the MAC message of each eNB in SCell configuration and dual link, UE can optionally apply the activation/deactivation designator of the SCell of each eNB.

Figure 18 is the schematic diagram of the activation/deactivation information being transmitted SCell according to exemplary embodiment of the invention by eNB.

Referring to Figure 18, if there is the UE that can configure dual link, the dual link configuration information for this UE is configured by base station, and this dual link configuration information is sent to UE, can be MeNB (S1810) in this base station. Described dual link configuration information can be sent to UE by RRC information, this RRC information can comprise the sTAG about comprising the SCell comprised by MeNB and include the information of sTAG of the SCell comprised by SeNB, or which base station to provide the information of which SCell about.

Activation or the deexcitation (S1820) of one or more SCell that this base station provides is determined in each base station for dual link, and according to determining result, the configuration of each base station indicates the activation of each in the one or more SCell or the activation/deactivation MACCE (S1830) of deexcitation. Afterwards, the activation/deactivation MACCE message (S1840) configured is transmitted in each base station to described UE.

More specifically, for dual link, MeNB checks one or more SCell of the MeNB as a SCell group, and configuration and transmission comprise the activation of a SCell group and the activation/deactivation MACCE of deactivation status. Activation/deactivation MACCE from MeNB can be referred to as a MAC message. Additionally, SeNB checks one or more SCell of the SeNB as the 2nd SCell group, and configuration and transmission comprise the activation of the 2nd SCell group and the activation/deactivation MACCE of deactivation status. Activation/deactivation MACCE from SeNB can be referred to as the 2nd MAC message. As it has been described above, each eNB can create and send the MAC message of the one or more SCell of himself independently to UE.

After receiving the message comprising activation/deactivation MACCE, based on the information received in RRC information, UE is for each SCell of configuration in this UE, determine which base station provides which SCell of configuration in this UE, and according to determining result, the information of the activation/deactivation designator of the relevant SCell that UE can comprise from activation/deactivation MACCE message, the optionally activation/deactivation information of one or more SCell that the base station of the described MAC message of the relevant transmission of application provides.

For these reasons, each eNB can maintain the original MAC message format of activation/deactivation MAC control element (CE), and transmits this activation/deactivation MACCE to UE. Thus base station can transmit activation/deactivation MACCE independently. According to various aspects of the invention, each MAC scheduler is independently operable, without exchanging extra information between MeNB and SeNB, thus UE can optionally apply the activation/deactivation designator of SCell, the activation/deactivation designator of each of which SCell configures and himself MAC message based on the SCell of each eNB.

Figure 19 is the schematic diagram of the activation/deactivation information being transmitted assistant service community by MeNB according to exemplary embodiment of the invention.

Referring to Figure 19, if there is UE, the MeNB configuration pin that can the configure dual link dual link configuration information to this UE, and transmit this dual link configuration information to UE (S1910).

Afterwards, MeNB determines activation or the deexcitation of the one or more SCell involved by this MeNB. MeNB receives the activation/deactivation information (S1930) of one or more SCell involved by this SeNB from being connected to described UE with the SeNB realizing dual link function. Based on a determination that result, MeNB allocation activation/deexcitation MACCE (S1940). MeNB transmits and comprises the message of the activation/deactivation MACCE configured to UE (S1950).

At this, if the state of one or more SCell that SeNB provides changes, the MAC scheduler of SeNB can transmit the activation/deactivation information of this SeNB one or more SCell provided to MeNB. Further, when MeNB determines the activation/deactivation MACCE message transmitting this MeNB one or more SCell provided, MeNB can confirm that whether the activation/deactivation state of the SeNB one or more SCell provided changes.

The activation/deactivation information of the one or more SCell involved by SeNB can be transferred into MeNB with MACCE message format or with message format determined in X2 or Xn interface.

Further, carrying out synchronize by the operation of the packet data inactivity timer of the one or more SCell provided by described SeNB with UE, MeNB can recognize the time expiration of the packet data inactivity timer of this SeNB one or more SCell provided. In the case, when the SCell in SeNB is owing to packet data inactivity timer expires when entering deactivation status, MeNB can be zero control SCell described in deexcitation by arranging the active information of this SCell, receives any information without from SeNB. If SeNB changes the value of the packet data inactivity timer of this SeNB each SCell provided, then the value of the packet data inactivity timer after changing can be sent to MeNB by this SeNB.

Figure 20 is the schematic diagram of the activation/deactivation information being transmitted SCell by SeNB according to exemplary embodiment of the invention.

Dual link function is connected to the SeNB of UE together with MeNB and determines activation or the deexcitation (S2010) of one or more SCell involved by this SeNB, and according to determining result, the activation/deactivation information of one or more SCell that this SeNB is provided by this SeNB is sent to UE or MeNB (S2020).

At this, if the activation/deactivation state of one or more SCell that SeNB provides changes or if SeNB receives one for confirming the confirmation request whether the activation/deactivation state of this SeNB one or more SCell provided changes from MeNB, the activation/deactivation information of the one or more SCell that this SeNB can be provided by the MAC scheduler of this SeNB is sent to MeNB or UE. At this, the activation/deactivation information of one or more SCell that described SeNB provides can be transferred into UE or be transferred into MeNB by message format determined in X2 or Xn interface by MACCE message format.

The operation of the packet data inactivity timer of one or more SCell that described SeNB provides can carry out synchronize with UE, thus MeNB for this SeNB each SCell provided, can recognize the time expiration of the packet data inactivity timer of this SeNB the one or more SCell provided. And, when SeNB changes the value of the packet data inactivity timer of this SeNB SCell provided, the value of the packet data inactivity timer after changing can be sent to MeNB by SeNB.

Figure 21 is the block diagram of the equipment of the activation/deactivation information for transmitting and receive SCell according to exemplary embodiment of the invention.

According to an illustrative embodiment of the invention, transmitting the part that the transmission equipment 2110 for the activation/deactivation information of one or more SCell can be eNB or this eNB, what receive the activation/deactivation information for one or more SCell receives the part that equipment 2120 can be UE or UE.

Referring to Figure 21, transmit to comprise for the transmission equipment 2110 of the activation/deactivation information of one or more SCell and determine unit 2111 and RF unit 2112 (as transmitter), and the reception equipment 2120 for the activation/deactivation information of one or more SCell that receives comprises RF unit 2121 (as receiver), determines unit 2122 and applying unit 2123. Hereinafter, for scenario described below, illustrative embodiments will be described: transmit and be eNB for the transmission equipment 2110 of the activation/deactivation information of one or more SCell and the reception equipment receiving the activation/deactivation information for one or more SCell 2120 is UE.

ENB2110 cell 2111 really determines the activation/deactivation state of the one or more SCell involved by this eNB2110, and this determines according to this, unit 2111 determines that the activation of each SCell to indicating in the one or more SCell of determination result of unit 2111 or the activation/deactivation MACCE of deexcitation configure, and the MACCE message comprising the activation/deactivation MACCE configured is sent to UE2120 by described RF unit 2112. Further, RF unit 2112 can transmit to UE2120: the information of the group comprising the SCell provided by MeNB and SeNB or which eNB relevant provide the information of which or which SCell by being arranged to UE2120, described RF unit 2112 can transmit information based on the described determination result determining unit 2111, namely by determining the determined whole information of unit 2111.

If eNB2110 is MeNB and this MeNB and SeNB is connected to UE2120 to carry out dual link, described MeNB can receive the activation/deactivation information of this SeNB one or more SCell provided from SeNB. At this, RF unit 2112 based on a determination that the determination result of unit 2111 and be received from the information of SeNB to generate activation/deactivation MACCE message, and can transmit the activation/deactivation MACCE message that generates to UE2120. But, if eNB2110 is SeNB (being connected to UE2120 to carry out dual link at this MeNB and SeNB), the RF unit 2112 in SeNB can transmit the activation/deactivation information of this SeNB one or more SCell provided to MeNB.

The RF unit 2121 of UE2120 can receive following at least one from the RF unit 2112 launching pusher side: activation/deactivation MACCE message, the information of the group comprising the SCell provided by MeNB and SeNB or which eNB offer relevant are by the information of one or more SCell of being arranged to UE2120. RF unit 2121 can via the information of the group comprising, described in RRC information reception, the SCell provided by MeNB and about providing the information of the base station of the SCell being configured in UE2120.

If RF unit 2121 receive described in the SCell provided by MeNB and SeNB is provided the information of group or which eNB offer relevant by the information of one or more SCell of being arranged to UE2120, determine based on the information received, unit 2122 can determine that one or more SCell is relevant to which base station, thus SCell configuration can be configured in UE2120.

According to the determination result determining unit 2122, applying unit 2123 from the information of the activation/deactivation designator of the relevant SCell being included in activation/deactivation MACCE message, optionally can apply the activation/deactivation indicator information of corresponding one or more SCell to himself eNB.

In above-mentioned example system, process and be described as being the series of steps based on flow chart or frame, but various aspects of the invention are not limited to shown order or sequence. Some steps can be executed in different order or these steps can be performed substantially simultaneously. Further, it is understood that the step shown in flow chart is not precluded from other steps, also can include other steps, and without departing substantially under the essence of the present invention and the premise of scope, the one or more steps in flow chart can be omitted.

Claims

1. the method being controlled the activation of Serving cell by the subscriber equipment (UE) supporting dual link, described UE communicates to carry out described dual link with primary nodal point and secondary nodal point, and the method includes:

Receiving the first information from described primary nodal point, this first information comprises the configuration activation/deactivation designator for the SCell in first assistant service community (SCell) group of described UE;

Receiving the second information from described secondary nodal point, this second information comprises the configuration activation/deactivation designator for the SCell in the 2nd SCell group of described UE;

Described activation/deactivation designator according to the described SCell in the described SCell group identified from described first message being received from described primary nodal point, controls the activation/deactivation state of described SCell in a described SCell group; And

Described activation/deactivation designator according to the described SCell in the described 2nd SCell group identified from the described message being received from described secondary nodal point, controls the activation/deactivation state of described SCell in described 2nd SCell group.

2. method according to claim 1, farther includes:

Configuring described dual link, wherein said UE is respectively provided with the radio resource with described primary nodal point and described secondary nodal point and controls (RRC) and be connected.

3. method according to claim 1, wherein said primary nodal point is main enode b (MeNB), and described secondary nodal point is auxiliary enode b (SeNB).

4. method according to claim 3, farther includes:

Receive radio resource from described MeNB and control (RRC) signal, the SCell configuration information of this signal packet SCell configuration information containing described primary nodal point and described secondary nodal point.

5. method according to claim 4, farther includes:

By using the described RRC signal being received from described MeNB, identify that SCell is in being associated with in a described SCell group of described MeNB, be in being associated with in the described 2nd SCell group of described SeNB.

6. method according to claim 3, farther includes:

Receive radio resource from described MeNB and control (RRC) signal to control the activation/deactivation state of SCell, this signal packet is containing the first packet data inactivity timer value for described primary nodal point and for the described second the second packet data inactivity timer value connecing node

Wherein said first packet data inactivity timer value and described second packet data inactivity timer value have different integer values.

7. method according to claim 1, the wherein said first information includes having the medium access fixing 8 bit sizes and controls (MAC) control element (CE), and described second information includes having the MACCE fixing 8 bit sizes, each in the described MACCE being wherein received from described primary nodal point and the described MACCE being received from described secondary nodal point has a reserved bit and seven configurable bits, wherein these seven configurable bits correspond respectively to the SCell with SCell index 1 to 7, and

The SCell that has of the described MACCE being wherein received from described primary nodal point indexes the bit of i corresponding to the activation/deactivation designator of SCell in described primary nodal point, and the SCell that has being received from the described MACCE of described secondary nodal point indexes the bit activation/deactivation designator corresponding to the SCell of described secondary nodal point of j, and

Wherein i and j is the integer between 1 to 7 and has different integer values.

8. method according to claim 7, farther includes:

Controlled (MAC) scheduler by the first medium access to identify from the described MACCE being received from described primary nodal point and corresponding for the SCell bit associated by described primary nodal point; And

(MAC) scheduler identification and corresponding for the SCell bit associated by described secondary nodal point is controlled by the second medium access.

9. the method being performed the activation/deactivation of Serving cell by the subscriber equipment (UE) supporting dual link, the method includes:

The medium access receiving the activation/deactivation designator comprising the Serving cell (SCell) associated by this MeNB from main enode b (MeNB) controls (MAC) control element (CE);

The MACCE of the activation/deactivation designator comprising the SCell associated by this SeNB is received from auxiliary enode b (SeNB);

Identify the activation/deactivation designator corresponding with the index of the described SCell being associated with described MeNB;

Based on the described MACCE being received from described MeNB, control to be associated with the activation/deactivation state of the described SCell of described MeNB;

Identify the activation/deactivation designator corresponding with the index of the described SCell being associated with described SeNB; And

Based on the described MACCE being received from described SeNB, control to be associated with the activation/deactivation state of the described SCell of described SeNB.

10. method according to claim 9, farther includes:

Configuration controls (RRC) with the radio resource of described MeNB and described SeNB and is connected, to support described dual link.

11. method according to claim 9, farther include:

The SCell configuration information of this MeNB is received from described MeNB;

The SCell configuration information of described SeNB is received from described MeNB; And

The described SCell configuration information of wherein said MeNB and the described SCell configuration information of described SeNB are configured by the RRC information from described MeNB.

12. method according to claim 9, farther include:

The packet data inactivity timer value of the packet data inactivity timer value being associated with the described SCell of this MeNB from described MeNB reception and the described SCell being associated with described SeNB,

The described packet data inactivity timer value of the described packet data inactivity timer value being wherein associated with the described SCell of described MeNB and the described SCell being associated with described SeNB is different.

13. method according to claim 9, farther include:

It is arranged to described MeNB by MAC which SCell of scheduler identification of described MeNB; And

It is arranged to described SeNB by MAC which SCell of scheduler identification of described SeNB.

14. method according to claim 9, each in the described MACCE being wherein received from described MeNB and the described MACCE being received from described SeNB has 8 fixing bit sizes, this 8 bit comprises seven configurable bits and a reserved bit, and

Described seven configurable bits correspond respectively to the SCell with SCell index 1 to 7, and

It is associated with the index of the SCell corresponding to the SCell of described MeNB SCell index j corresponding to i and the SCell being associated with described SeNB and there is different integer values.

15. method according to claim 9, wherein:

The described SCell being associated with described MeNB is contained in first service community group (SCG), and the described SCell being associated with described SeNB is contained in second service community group (SCG).

16. method according to claim 14, wherein:

It is contained in the described activation/deactivation designator that interior and corresponding to described SCell index i the configurable bit of the described MACCE being received from described MeNB is identified as having the SCell that described SCell indexes i; And

It is contained in the described activation/deactivation designator that interior and corresponding to described SCell index j the configurable bit of the described MACCE being received from described SeNB is identified as having the SCell that described SCell indexes j,

Wherein be contained in be received from described SeNB described MACCE in and corresponding to described SCell index i described configurable bit be left in the basket, and be contained in be received from described MeNB described MACCE in and corresponding to described SCell index j configurable bit be left in the basket.

17. the method activation/deactivation of Serving cell being operated by subscriber equipment (UE), the method includes:

Configure the dual link with main enode b (MeNB) and auxiliary enode b (SeNB) to be connected to carry out radio resource control (RRC);

Configure assistant service community (SCell) group of described MeNB and the SCell group of described SeNB;

Check that the activation/deactivation medium access being delivered from described MeNB controls (MAC) control element (CE) message, if the designator of the index of the SCell in the described SCell group of described MeNB is set to 1, then activate this SCell, if and the designator of the index of the described SCell in the described SCell group of described MeNB is set to 0, then this SCell of deexcitation; And

Check the activation/deactivation MACCE message being delivered from described SeNB, if the designator of the index of the SCell in the described SCell group of described SeNB is set to 1, then activate this SCell, if and the designator of the index of the described SCell in the described SCell group of described SeNB is set to 0, then this SCell of deexcitation.

18. method according to claim 17, farther include:

In the activation/deactivation MACCE message being delivered from described MeNB, identify indexing with this SCell in the described SCell group of MeNB described in activation/deactivation of the SCell in the described SCell group of described MeNB, and ignore the described index not configuring the SCell for MeNB; And

In the activation/deactivation MACCE message being delivered from described SeNB, identify indexing with this SCell in the described SCell group of SeNB described in activation/deactivation of the SCell in the described SCell group of described SeNB, and ignore the described index not configuring the SCell for SeNB

The index of SCell is wherein configured for each UE.

19. method according to claim 17, farther include:

First packet data inactivity timer of the described SCell group of described MeNB is set; And

Second packet data inactivity timer of the described SCell group of described SeNB is set,

Wherein it is respectively directed to each described MeNB and the value of described first packet data inactivity timer is set, and the value of described second packet data inactivity timer is set for each described SeNB.

20. method according to claim 17, wherein:

Check the activation/deactivation MACCE message being delivered from described MeNB, if the designator of the index of the SCell in the described SCell group of described MeNB is set to 1, then activate this SCell, if and the designator of the index of the SCell in the described SCell group of described MeNB is set to 0, the operation of then this SCell of deexcitation, described activation and deexcitation is operated by MAC scheduler for described MeNB in described UE; And

Check the activation/deactivation MACCE message being delivered from described SeNB, if the designator of the index of the SCell in the described SCell group of described SeNB is set to 1, then activate this SCell, if and the designator of the index of the SCell in the described SCell group of described SeNB is set to 0, the operation of then this SCell of deexcitation, described activation and deexcitation is operated by MAC scheduler for described SeNB in described UE.