WO2016112715A1 - Procédé et dispositif pour commander et gérer des ressources de cellules de desserte secondaires - Google Patents

Procédé et dispositif pour commander et gérer des ressources de cellules de desserte secondaires Download PDF

Info

Publication number
WO2016112715A1
WO2016112715A1 PCT/CN2015/090959 CN2015090959W WO2016112715A1 WO 2016112715 A1 WO2016112715 A1 WO 2016112715A1 CN 2015090959 W CN2015090959 W CN 2015090959W WO 2016112715 A1 WO2016112715 A1 WO 2016112715A1
Authority
WO
WIPO (PCT)
Prior art keywords
secondary serving
terminal
cell
unlicensed
authorized
Prior art date
Application number
PCT/CN2015/090959
Other languages
English (en)
Chinese (zh)
Inventor
杨立
Original Assignee
中兴通讯股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Publication of WO2016112715A1 publication Critical patent/WO2016112715A1/fr

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • the embodiments of the present invention relate to, but are not limited to, the field of communications, and in particular, to a method and a device for controlling and managing resources of a secondary serving cell.
  • FIG. 1 is a schematic diagram of a system architecture of a Long Term Evolution (LTE) system in a 3GPP cellular mobile family system, including: a mobility management entity (MME, Mobility Management Entity), and a service gateway (SGW, Serving GetWay), the user equipment on the radio access network side is called a UE (User Equipment) and a base station (eNodeB, eNB for short).
  • MME mobility management entity
  • SGW Serving GetWay
  • UE User Equipment
  • eNodeB base station
  • the Uu air interface is called an air interface.
  • the eNB and the MME are between the eNB and the MME.
  • the S1-MME (S1 for the control plane) interface is an S1-U interface between the eNB and the SGW, and an X2-U (X2-User plane) and an X2-C (X2-Control plane) interface between the eNBs.
  • the terminal and the base station can perform uplink and downlink communication in the cells configured on the multiple authorized carriers.
  • the data is transmitted and received on the multi-authorized carrier.
  • the base station configures the terminal with multiple serving cells: one primary serving cell Pcell (the only serving cell that bears the PUCCH channel feedback) + multiple secondary serving cells Scell (at least PDSCH and/or PUSCH channel data transmission service cell).
  • Pcell the only serving cell that bears the PUCCH channel feedback
  • Scell at least PDSCH and/or PUSCH channel data transmission service cell.
  • This is the LTE carrier aggregation technology (CA).
  • CA LTE carrier aggregation technology
  • the licensed carrier resources in the licensed band of the LTE system are relatively scarce (requires multiple operators to bid for purchase), and the macro-cell homogeneous configuration network of the macro base station (Macro eNB) cannot meet the increasing traffic of LTE users.
  • LPN low-power base station
  • FIG. 2(a) is a schematic diagram of LTE authorized carrier aggregation in the related art.
  • the two uplink and downlink radio coverages are substantially the same, and the macro cells on two adjacent different licensed carriers in the same licensed frequency band are respectively configured as CA operations, and the UE is within the effective coverage.
  • the uplink and downlink communication can be performed simultaneously with the macro cell on the two authorized carriers to implement data transmission and reception on the dual authorized carrier.
  • FIG. 2(b) is a schematic diagram of LTE-authorized carrier aggregation in the related art.
  • two LPN micro-cells are added, which are respectively in two unlicensed frequency bands.
  • the UE can simultaneously perform uplink and downlink communication with the macro cell on the two authorized carriers and the micro cells on the two unlicensed carriers within the effective coverage of the UE to implement data transmission and reception on multiple carriers.
  • N parallel HARQs Hybrid Automatic Repeat reQuests
  • TTI Transmission Time Interval
  • a series of related processing of the PHY entity eg, channel coding, modulation, resource block adaptation mapping, etc.
  • LTE specific physical waveform signals which are transmitted on N authorized carriers; the UE or eNB as the receiving end passes the MAC
  • the PHY entity e.g, channel coding, modulation, resource block adaptation mapping, etc.
  • the only primary serving cell Pcell and N-1 secondary serving cells Scell are configured on the authorized carrier.
  • FIG. 4 is a working architecture diagram of LTE unlicensed carrier aggregation in the related art.
  • the eNB or the UE when the eNB or the UE is the transmitting end, there are N parallel HARQ entities configured in the MAC protocol entity, but one or more of them are traditional HARQ entities that serve the licensed carrier (as in FIG. 3).
  • the HARQ entity), and the rest are U-HARQ entities serving unlicensed carriers (requires modification and enhancement of the characteristics of the unlicensed carrier for the legacy HARQ entity); the generated N HARQ packets (or MAC PDUs), through the physics A series of correlation processing of the layer PHY entity (eg, channel coding, modulation, resource block adaptation mapping, etc.), and finally converted to LTE specific physical waveform signals, some of which are sent on the licensed carrier, and the other part is
  • the non-authorized carrier is sent out, and the PHY and U-PHY entities are also distinguished here.
  • the difference between the knowledge and the traditional PHY entity There is still a primary serving cell Pcell on the unique authorized carrier and a secondary serving cell Scell on the plurality of authorized carriers, and at the same time a secondary serving cell U-Scell on the plurality of unlicensed carriers.
  • each eNB Since the resources on the unlicensed carrier are shared by multiple eNBs and/or WIFI AP nodes of the same carrier and/or different operators in one physical local area, each eNB must pass LBT (Listen Before Talk). The method of listening to the latter is to listen to the busy channel of the detection channel first, and then try to preempt the channel resources on the unlicensed carrier.
  • LBT Listen Before Talk
  • eNB1 of operator A configures CA:Pcell1+U-Scell for its own user UE1; eNB2 of operator B configures CA:Pcell2+U-Scell for its own user UE2; Pcell1 and Pcell2 is on the carrier's own authorized carriers, and there is no interference collision and channel resource sharing between them; but the U-Scell is on the same unlicensed carrier.
  • the operator A and/or The eNB of B wants to send data on the U-Scell, and must first listen to detect whether the unlicensed carrier is occupied by other nodes (eNB, WIFI AP, UE, etc.).
  • the eNB1 when the received energy of the unlicensed carrier detected by the CCA (Clear Channel Assessment) is greater than a threshold, the eNB1 indicates that it has been occupied at this time, and the eNB1 cannot reoccupy the unlicensed carrier at this moment. Channel resources. Then, usually, eNB1 rolls back time for a period of time, waits for the next cycle time, and then performs the next round of CCA detection to try to preempt the resources on the unlicensed carrier.
  • CCA Carrier Channel Assessment
  • the embodiments of the present invention provide a method and a device for controlling and managing resources of a secondary serving cell, which can fully utilize resources of multiple serving U-Scells.
  • An embodiment of the present invention provides a method for controlling a resource of a secondary serving cell, including: an evolved base station acquires and configures a secondary serving cell of the terminal; and the evolved base station sets at least two of the secondary serving cells of the terminal to use the same non- A resource that authorizes or authorizes carrier bandwidth.
  • the eNodeB acquiring the secondary serving cell of the terminal, where the eNodeB acquires information about the unlicensed micro cell where the terminal is located; and the eNodeB according to the unlicensed or authorized micro cell
  • the configuration frame format is used to select a secondary serving cell for the terminal.
  • the identifiers of the at least two secondary serving cells that use the same unlicensed or licensed carrier bandwidth resources are different.
  • the identifier of the secondary serving cell is a cell physical identifier PCI and a cell global identifier ECGI.
  • the embodiment of the present invention further provides a method for managing resources of a secondary serving cell, including: the terminal establishes a wireless link with at least two secondary serving cells of the terminal by using the same unlicensed or authorized carrier; Wireless link resources transfer data.
  • the terminal transmitting data by using the resource of the wireless link includes: performing uplink and downlink transmission of the data block according to an LTE technology.
  • the terminal acquires the right to use the unlicensed carrier of the secondary serving cell
  • the method further includes: sending, by the terminal, information about the unlicensed or authorized micro cell set in which the UE is located to the evolved base station.
  • the embodiment of the present invention further provides a control device for a resource of a secondary serving cell, including: an acquiring module, configured to acquire a secondary serving cell of the terminal; and a setting module, configured to set at least two of the secondary serving cells of the terminal Resources that use the same unlicensed or licensed carrier bandwidth.
  • the acquiring module includes: an acquiring unit, configured to acquire information about an unauthorized or authorized micro cell where the terminal is located; and a selecting unit, configured to be according to the unauthorized or authorized micro cell
  • the frame format is configured to select a secondary serving cell for the terminal.
  • the identifiers of the at least two secondary serving cells that use the same unlicensed or licensed carrier bandwidth resources are different.
  • the identifier of the secondary serving cell is a cell physical identifier PCI and a cell global identifier ECGI.
  • the embodiment of the present invention further provides a resource management device for a secondary serving cell, including: an establishing module, configured to use the same unlicensed or authorized carrier and at least two secondary services of the terminal The cell establishes a wireless link; and a management module configured to transmit data using the resources of the wireless link.
  • the management module is configured to perform uplink and downlink transmission of the data block in a manner of the LTE technology.
  • the apparatus further includes: a sending module, configured to send, to the evolved base station, the identifier information of the unlicensed or authorized micro cell set in which the terminal is located.
  • a sending module configured to send, to the evolved base station, the identifier information of the unlicensed or authorized micro cell set in which the terminal is located.
  • the terminal establishes multiple radio links (Radio Link) on multiple unlicensed carrier frequencies and multiple secondary serving cells to maximize the utilization of the surrounding unlicensed carrier resources and improve resource utilization.
  • Radio Link Radio Link
  • FIG. 1 is a schematic diagram of a system architecture of a long term evolution system in a 3GPP cellular mobile family system in the related art
  • FIG. 2(a) is a schematic diagram of LTE authorized carrier aggregation in the related art
  • 2(b) is a schematic diagram of LTE unlicensed carrier aggregation in the related art
  • FIG. 5 is a schematic flowchart of a method for controlling resources of a secondary serving cell according to Embodiment 1 of the present invention.
  • FIG. 6 is a schematic flowchart of another method for controlling resources of a secondary serving cell according to Embodiment 2 of the present invention.
  • FIG. 7 is a schematic diagram of deployment of an unlicensed carrier micro cell in an A-licensed carrier macro cell A according to an application example 1 of the present invention
  • FIG. 8 is a schematic diagram of deployment of an unlicensed carrier micro cell in an operator B-authorized carrier macro cell B according to application example 2 of the present invention
  • FIG. 9 is a schematic structural diagram of a resource control apparatus for a secondary serving cell according to Embodiment 3 of the present invention. schematic diagram;
  • FIG. 10 is a schematic structural diagram of another apparatus for managing resources of a secondary serving cell according to Embodiment 4 of the present invention.
  • FIG. 5 is a schematic flowchart of a method for controlling resources of a secondary serving cell according to an embodiment of the present invention. The method shown in Figure 5 includes:
  • Step 501 The evolved base station acquires and configures a secondary serving cell of the terminal.
  • Step 502 The evolved base station sets at least two resources in the secondary serving cell of the terminal that use the same unlicensed or authorized carrier bandwidth.
  • the resources of the unlicensed or authorized carrier usually refer to resources that are not authorized or authorized carrier bandwidth, because the unlicensed or authorized carrier resources must correspond to certain wireless bandwidth resources.
  • the evolved base station sets at least two resources in the secondary serving cell of the terminal that use the same unlicensed or authorized carrier bandwidth, so that the UE can be in an unlicensed or authorized carrier frequency and multiple
  • the secondary serving cell establishes multiple radio links, and the maximum degree of aggregation utilizes the surrounding unlicensed or authorized carrier resources to improve resource utilization.
  • FIG. 6 is a schematic flowchart diagram of another method for controlling resources of a secondary serving cell according to an embodiment of the present invention.
  • the method shown in Figure 6 includes:
  • Step 601 The terminal establishes a wireless link with at least two secondary serving cells of the terminal by using the same unlicensed or authorized carrier.
  • Step 602 The terminal transmits data by using the resource of the wireless link.
  • the terminal is on an unlicensed or authorized carrier frequency point and A plurality of radio links, Radio Link, are established in the secondary serving cell to maximize the utilization of the surrounding unlicensed or authorized carrier resources to improve resource utilization.
  • the eNB can provide a specific UE for its own service (that is, a UE that satisfies a certain radio environment condition, the same below) through the extensive scanning and monitoring detection of the target unlicensed frequency band in the previous stage, and the LTE has an unlicensed carrier aggregation configuration, that is, at least a Pcell on an authorized carrier and one or N unlicensed carrier cells U-Scell(i,j), where i is the index number of the unlicensed carrier, and j is the serving cell index configured on the ith unlicensed carrier number.
  • j can only be 1, indicating that only a single U-Scell can be configured on the i-th unlicensed carrier.
  • j can take the value [1, 2, 3...M], indicating that M U-Scells can be configured on the i-th unlicensed carrier.
  • the PCI Physical-layer Cell Identity
  • the ECGI E-UTRAN Cell Global Identifier
  • the identifiers of the M U-Scells are the same, indicating that the M U-Scells belong to the same serving cell from the high-layer RRC protocol, and each U-Scell is only one of the signals transmitted and received by the serving cell.
  • Point TP, Transmission Point
  • M U-Scell identifiers (PCI and ECGI) differently indicate that the M U-Scells belong to multiple independent serving cells from the high-layer RRC protocol, and need to be independently configured by RRC.
  • Each U-Scell can independently transmit and receive signals, that is, the identifiers of at least two secondary serving cells using the same unlicensed carrier are different, which will be described in detail later in this document. Similarly, the same authorization is used.
  • the identifiers of at least two secondary serving cells of the resources of the carrier are different.
  • the identifier of the secondary serving cell is a cell physical identifier PCI and a cell global identifier ECGI.
  • the evolved base station selects a secondary serving cell for the terminal according to the configured frame format of the unlicensed or authorized micro cell.
  • U-Scell is a pure downlink frame format cell, that is, U-SDL (Unlicensed-Supplementary Downlink, unlicensed carrier acts as supplementary downlink transmission resource);
  • U-Scell is up and down A frame format cell of a row, that is, a U-UL/DL (Unlicensed-Uplink Downlink, an unlicensed carrier serving as an uplink and downlink transmission resource). among them:
  • S2 The UE sends the identifier information of the unlicensed or authorized micro cell set in which the terminal is located to the evolved base station eNB.
  • the UE sends the RRC message by using the macro cell signaling radio bearer (SRB) on the authorized carrier to send the RRC message.
  • SRB macro cell signaling radio bearer
  • the eNB finds that the multiple U-Scell (i, j) serving cells belong to the same eNB of the current macro cell by searching and internal analysis of the unlicensed micro cell PCI and ECGI, and both are in U-SDL. Configuration mode, so their downlink timing is the same, meeting the basic conditions for configuring the downlink CA;
  • the eNB adopts the LTE technology: the RRC configuration procedure performs the CA configuration of the unlicensed carrier on the UE: Pcell+multiple U-Scell(i,j);
  • the eNB performs MAC protocol layer related processing in the same manner as multiple U-Scells (i, j) are in different carrier frequency points, such as multiple downlink parallel HARQ process management, multiple parallel MAC PDU transmission preparation, and the like. And transmitting to the plurality of U-Scell (i, j) serving nodes through an ideal backhaul link (Ideal Backhaul, for example, optical fiber), and then performing PDCCH cross-carrier downlink scheduling on the authorized macro cell Pcell;
  • Ideal Backhaul link Ideal Backhaul, for example, optical fiber
  • U-Scell (i, j) service nodes are required to perform CCA detection according to the rules and requirements of LBE (Load Based Equipment) or FBE (Frame Based Equipment) at a specific time (ie, according to the CCA algorithm, The same downlink) performs downlink CCA detection, and attempts to occupy the entire unlicensed carrier channel; if the energy of the downlink CCA detection is lower than the preset threshold, indicating that the channel is idle, multiple U-Scell (i, j) service nodes can respectively utilize themselves The preempted unlicensed carrier resources are used to transmit PDSCH data blocks.
  • the serving node cannot use the corresponding U-Scell (i, j) resource to transmit the PDSCH data block. So the UE can independently from multiple The U-Scell(i,j) receives the PDSCH data block, but cannot actually receive multiple PDSCH data blocks simultaneously from multiple U-Scells (i, j), and transmits the CCA detection of the transmitting node through the U-Scell (i, j). And preemption, causing the transmission and reception time of the data block to be staggered, in a time division manner;
  • the UE performs MAC protocol layer correlation processing, downlink MAC PDU reception and reordering, and downlink HARQ process feedback according to the same manner that multiple U-Scells (i, j) are in different carrier frequency points, according to the received result,
  • the PUCCH uplink feedback is performed on the authorized macro cell Pcell.
  • the overall working mode of the above process is similar to that of the U-Scell (i, j) at different carrier frequencies, but the difference is that the U-Scell (i, j) can actually be configured at the same unlicensed carrier frequency, so that the UE can Multiple unlicensed carrier frequencies and multiple U-Scells (i, j) establish multiple radio links, which maximize the aggregation of the surrounding unlicensed carrier resources, thus avoiding U-Scell (i, j) service nodes. Because the CCA detection of the local area in which it is located fails, the PDSCH data block cannot be sent in the downlink in time, which has a negative impact on the downlink data transmission rate.
  • Scell(i, j) can be configured to be at the same authorized carrier frequency, so that the UE can establish a plurality of Scells (i, j) at one authorized carrier frequency. Multiple wireless links.
  • Scell(i, j) serving nodes do not perform CCA downlink detection before transmitting different PDSCH data blocks in the downlink, if multiple Scells (i, j) are scheduled in one TTI downlink at the same time, In the PDSCH data block, the UE side generates a reception collision and cannot receive the demodulation correctly.
  • the PDSCH data block is scheduled in one TTI downlink, and then the single node scheduling or the downlink multipoint can be optimized. Coordinated Multiple Point Transmission (COMP) achieves better gain.
  • CCP Coordinated Multiple Point Transmission
  • U-Scell(i, j) serving nodes since multiple U-Scell (i, j) serving nodes always perform CCA downlink detection before transmitting data blocks in the downlink, U-Scell(i, j) simultaneously schedules PDSCH in one TTI downlink.
  • the probability of the data block is very low, and the probability of receiving collision generated by the UE side is also low, so that the correct reception and demodulation probability is high.
  • the DL mode is the same as the above case 1, except that the eNB performs downlink CCA detection and resource preemption is limited in the location of the DL subframe; the UL corresponding UE performs uplink CCA detection and resource preemption, but is limited in The location of the UL subframe, which will be described in detail below:
  • the UE sends an RRC message to the eNB by sending an RRC message to the eNB by using an RRC message on the radio bearer (SRB, Signaling Radio Bearer).
  • SRB Signaling Radio Bearer
  • the eNB finds that multiple U-Scell (i, j) serving cells belong to the same eNB of the current macro cell by searching and internal analysis of these unlicensed micro cells PCI and ECGI, and all are in U-UL/ DL configuration mode, so their uplink and downlink timings are the same, meeting the basic conditions for configuring the uplink and downlink CA;
  • the eNB adopts the LTE technology: the RRC configuration procedure performs the CA configuration of the unlicensed carrier on the UE: Pcell+multiple U-Scell(i,j);
  • the eNB performs MAC protocol layer correlation processing in the same manner as multiple U-Scells (i, j) are in different carrier frequency points, such as multiple uplink and downlink parallel HARQ process management, and multiple parallel MAC PDU transmission preparations.
  • Etc. is sent to multiple U-Scell (i, j) serving nodes through an ideal backhaul link (Ideal Backhaul, such as optical fiber), and then PDCCH cross-carrier downlink scheduling is performed on the authorized macro cell Pcell.
  • Ideal Backhaul such as optical fiber
  • the plurality of U-Scell (i, j) service nodes perform downlink CCA detection at a specific moment according to rules and requirements of LBE (Load Based Equipment) or FBE (Frame Based Equipment), and try to occupy the entire unlicensed carrier channel; If the energy of the downlink CCA detection is lower than the preset threshold, indicating that the channel is idle, the multiple U-Scell (i, j) serving nodes may separately transmit the PDSCH data block by using the pre-emptied unlicensed carrier resources. If the CCA detection fails, the serving node cannot use the corresponding U-Scell (i, j) resource to transmit the PDSCH data block.
  • the UE can independently receive PDSCH data blocks from multiple U-Scells (i, j), but can not simultaneously receive multiple PDSCH data blocks from multiple U-Scells (i, j) simultaneously, through U-Scell (i , j)
  • the CCA detection and preemption of the transmitting node causes the transmission and reception time to be staggered.
  • a single UE performs uplink CCA detection at a specific time according to the rules and requirements of the LBE (Load Based Equipment) or FBE (Frame Based Equipment), and attempts to occupy the entire unlicensed carrier channel; If the energy of the uplink CCA detection is lower than the preset threshold, indicating that the channel is idle, a single UE can preempt and utilize the unlicensed carrier resources to transmit the PUSCH data block, and the eNB can serve through multiple U-Scells (i, j). The node receives the uplink data block to form a receive diversity. If the uplink CCA detection fails, the UE temporarily cannot transmit the PUSCH data block, and the time retreats to wait for the next preemption opportunity;
  • the UE performs MAC protocol layer correlation processing, downlink MAC PDU reception and reordering, and downlink HARQ process feedback according to the same manner that multiple U-Scells (i, j) are in different carrier frequency points, according to the received result,
  • the PUCCH uplink feedback is performed on the authorized macro cell Pcell.
  • the U-Scell (i, j) serving node sends the received PUSCH data block back to the eNB through the ideal backhaul link, and the eNB can correctly receive the PUSCH data block from a U-Scell (i, j) serving node.
  • the PHICH downlink acknowledgement feedback is performed by authorizing the macro cell Pcell. If the eNB cannot correctly receive the PUSCH data block from any one of the U-Scell (i, j) serving nodes, the UE is required to retransmit the PUSCH data block.
  • FIG. 7 is a schematic diagram of deployment of an unlicensed carrier micro cell in an A-licensed carrier macro cell A according to an application example 1 of the present invention.
  • the eNB determines the operating frequency range of the subsequent CA to be 10M U-Scell(i,j) bandwidth of 5160MHz-5170MHz through extensive scanning and monitoring detection of the target unlicensed frequency band 5150MHz-5350MHz.
  • S102 The UE sends a Measurement Report message to the eNB by sending a Measurement Report message by using a Signaling Radio Bearer (SRB) on the authorized carrier.
  • SRB Signaling Radio Bearer
  • the eNB finds three U-Scell(i,1), U-Scell(i,2), U-Scell(i,3) services by searching and internal analysis of these unlicensed microcells PCI and ECGI.
  • the cells belong to the same eNB of the current macro cell, and are all in the U-SDL configuration mode. Therefore, their downlink timings are the same, and the basic conditions for configuring the downlink CA are met.
  • S104 The eNB adopts an LTE technology: an RRC configuration procedure is performed on the UE with an unlicensed carrier.
  • CA configuration Pcell+U-Scell(i,1)+U-Scell(i,2)+U-Scell(i,3);
  • the eNB performs MAC protocol layer correlation processing according to the manner that the three U-Scells (i, 1), U-Scells (i, 2), and U-Scells (i, 3) are in different carrier frequency points, such as Multiple downlink parallel HARQ process management, multiple parallel MAC PDU transmission preparation, etc., respectively sent to U-Scell (i, 1), U-Scell (i, 2) through an ideal backhaul link (Ideal Backhaul such as optical fiber) a U-Scell (i, 3) serving node, and then performing PDCCH cross-carrier downlink scheduling on the authorized macro cell Pcell;
  • Ideal Backhaul such as optical fiber
  • U-Scell(i,1), U-Scell(i,2), U-Scell(i,3) The serving node performs downlink CCA detection at a specific moment according to the rules and requirements of the FBE, and attempts to occupy the entire 5160 MHz. -5170MHz unlicensed carrier channel; if the energy of downlink CCA detection is lower than the preset threshold, it indicates that the channel is idle, U-Scell(i,1), U-Scell(i,2), U-Scell(i,3)
  • the serving node can separately transmit the PDSCH data block by using the unlicensed carrier resources that it preempts. If the CCA detection fails, the serving node cannot use the corresponding resources to transmit the PDSCH data block.
  • the UE independently receives the PDSCH data block from the U-Scell (i, 1), U-Scell (i, 2), U-Scell (i, 3), but cannot actually receive multiple PDSCH data blocks at the same time;
  • S107 The UE performs MAC protocol layer correlation processing and downlink MAC PDU according to the same manner that U-Scell (i, 1), U-Scell (i, 2), and U-Scell (i, 3) are in different carrier frequency points. Receiving and reordering, downlink HARQ process feedback, and performing PUCCH uplink feedback on the authorized macro cell Pcell according to the received result.
  • the UE can only be configured with one serving cell (the unique cell physical identifier PCI, Physical Cell Identity and E-UTRA Cell Global Identity), and Pcell and Scell(s) on each authorized carrier.
  • the maintenance update is completed by the LTE system Radio Resource Management (RRM) and the RRC connection reconfiguration mechanism.
  • RRM Radio Resource Management
  • a target Pcell_new or Scell_new with better radio quality coverage and/or lighter cell load is used to replace the source Pcell_old or Scell_old with poor current radio quality coverage and/or cell load, but at the same time on each authorized carrier. Only one Pcell or Scell can be configured.
  • This maintenance update is beneficial to the LTE network system capacity and the service experience of the terminal.
  • the U-Scell(i) on each unlicensed carrier is uncertain for its resource existence and usability for a specific UE. Even if the UE is configured with a U-Scell(i) on an unlicensed carrier, It is not always possible to preempt and utilize unlicensed carrier resources, since this also depends on the complex wireless interference environment around the eNB node and the UE. If the LTE unlicensed carrier aggregation still uses the configuration constraints of purely authorized carrier aggregation, the resource usage efficiency of the U-Scell(i) may be worse than that of the authorized Scell(i), so that the UE cannot fully obtain the CA technology. Data rate gain.
  • FIG. 8 is a schematic diagram of deployment of an unlicensed carrier micro cell in an operator B-authorized carrier macro cell B according to application example 2 of the present invention.
  • the eNB determines the operating frequency range of the subsequent CA to be 20M U-Scell(i,j) bandwidth of 5260MHz-5280MHz through extensive scanning and monitoring detection of the target unlicensed frequency band 5150MHz-5350MHz.
  • S202 The UE sends the Measurement Report message to the eNB by sending a Measurement Report message by using a Signaling Radio Bearer (SRB) on the authorized carrier.
  • SRB Signaling Radio Bearer
  • the eNB finds that the U-Scell(i,1) and U-Scell(i,2) serving cells belong to the same eNB of the current macro cell by searching and internal analysis of the unlicensed microcells PCI and ECGI. Both are in the U-UL/DL configuration mode, so their uplink and downlink timings are the same, which satisfies the basic conditions for configuring the uplink and downlink CA;
  • the eNB adopts the LTE technology: the RRC configuration procedure performs the CA configuration of the unlicensed carrier on the UE: Pcell+U-Scell(i,1)+U-Scell(i,2);
  • the eNB performs MAC protocol layer related processing in the same manner as the U-Scell (i, 1) and the U-Scell (i, 2) are in different carrier frequency points, for example, multiple uplink and downlink parallel HARQ process management, and more Parallel MAC PDU transmission preparation, etc., respectively sent to the U-Scell (i, 1), U-Scell (i, 2) service node through an ideal backhaul link (Ideal Backhaul, such as optical fiber), and then in the authorized macro cell Pcell
  • the PDCCH cross-carrier downlink scheduling is performed on the PDCCH.
  • the eNB also needs to perform PDCCH cross-carrier uplink scheduling on the authorized macro cell Pcell because the UE also needs to perform uplink data transmission on the unlicensed carrier resource.
  • U-Scell (i, 1), the U-Scell (i, 2) serving node performs downlink CCA detection at a specific moment according to the rules and requirements of the FBE, and attempts to occupy an unlicensed carrier channel of 5260 MHz-5280 MHz; if the downlink CCA The detected energy is lower than the preset threshold, indicating that the channel is idle, and the U-Scell (i, 1) and U-Scell (i, 2) serving nodes can respectively use the unlicensed carrier resources that they preempt to perform the PDSCH data block. send. If the CCA detection fails, the serving node cannot use the corresponding resources to transmit the PDSCH data block.
  • the UE independently receives PDSCH data blocks from U-Scell (i, 1), U-Scell (i, 2), but cannot simultaneously receive multiple PDSCH data blocks.
  • a single UE performs uplink CCA detection at a specific moment according to the rules and requirements of the FBE, and attempts to occupy an unlicensed carrier channel of 5260 MHz-5280 MHz; if the energy of the uplink CCA detection is lower than a preset threshold, it indicates that the channel is idle, and the single UE
  • the PUSCH data block can be preempted and utilized by the unlicensed carrier resource, and the eNB can receive the U-Scell (i, 1), U-Scell (i, 2) service node to form the receive diversity. If the uplink CCA detection fails, the UE temporarily cannot transmit the PUSCH data block, and the time retreats to wait for the next preemption opportunity;
  • the UE performs MAC protocol layer correlation processing, downlink MAC PDU reception and reordering, and downlink HARQ process feedback according to the manner that the U-Scell (i, 1) and the U-Scell (i, 2) are in different carrier frequency points. According to the received result, the PUCCH uplink feedback is performed on the authorized macro cell Pcell.
  • the U-Scell (i, 1), U-Scell (i, 2) serving node sends the received PUSCH data block back to the eNB through the ideal backhaul link, as long as the eNB can from the U-Scell (i, 1), If the PUSCH data block is correctly received on any of the service nodes of the U-Scell (i, 2), the PHICH downlink acknowledgement feedback is performed by the authorized macro cell Pcell, if the eNB cannot obtain the U-Scell (i, 1) and the U-Scell (i) 2) If the PUSCH data block is correctly received, the UE is required to retransmit the PUSCH data block.
  • the uplink and downlink data may be transmitted according to the LTE technology, that is, the data transmission is performed under the same premise that the secondary serving cell is in different carrier frequency points according to the protocol.
  • the mode is transmitted, that is, when the method of the embodiment of the present invention is used, although the resource deployment mode of the secondary serving cell is different from that specified by the protocol, the data transmission may be performed in the manner specified in the protocol, without using the related technology.
  • FIG. 9 is a schematic structural diagram of a device for controlling resources of a secondary serving cell according to Embodiment 3 of the present invention. Referring to the method described in FIG. 5 to FIG. 8, the apparatus shown in FIG. 9 includes:
  • the obtaining module 901 is configured to acquire a secondary serving cell of the terminal
  • the setting module 902 is configured to set at least two resources in the secondary serving cell of the terminal that use the same unlicensed or authorized carrier bandwidth.
  • the obtaining module 901 includes:
  • An obtaining unit configured to obtain information about an unauthorized or authorized micro cell where the terminal is located;
  • the selecting unit is configured to select a secondary serving cell for the terminal according to a configured frame format that is the unlicensed or authorized micro cell.
  • the identifiers of the at least two secondary serving cells that use the same unlicensed or licensed carrier bandwidth resources are different.
  • the identifier of the secondary serving cell is a cell physical identifier PCI and a cell global identifier ECGI.
  • the evolved base station sets at least two resources in the secondary serving cell of the terminal that use the same unlicensed or authorized carrier bandwidth, so that the UE can be on an unlicensed or authorized carrier frequency point and multiple
  • the secondary serving cell establishes multiple radio links, and the maximum degree of aggregation utilizes the surrounding unlicensed or authorized carrier resources to improve resource utilization.
  • FIG. 10 is a schematic structural diagram of another apparatus for managing resources of a secondary serving cell according to Embodiment 4 of the present invention.
  • the apparatus shown in FIG. 10 includes:
  • Establishing module 1001 configured to establish a wireless link with at least two secondary serving cells of the terminal by using the same unlicensed or authorized carrier;
  • the management module 1002 is configured to transmit data using the resources of the wireless link.
  • the management module 1002 is configured to perform uplink and downlink transmission of data blocks according to the LTE technology.
  • the device further comprises:
  • a sending module configured to send, to the evolved base station, identifier information of the unlicensed or authorized micro cell set in which the terminal is located.
  • the terminal establishes multiple radio links (Radio Link) on multiple unlicensed or authorized carrier frequencies and multiple secondary serving cells to maximize the utilization of the surrounding unlicensed or authorized carrier resources to improve resource utilization. rate.
  • Radio Link Radio Link
  • all or part of the steps of the above embodiments may also be implemented by using an integrated circuit. These steps may be separately fabricated into individual integrated circuit modules, or multiple modules or steps may be fabricated into a single integrated circuit module. achieve. Thus, embodiments of the invention are not limited to any specific combination of hardware and software.
  • the plurality of devices, functional modules or functional units in the above embodiments may be implemented by a general-purpose computing device, which may be concentrated on a single computing device or distributed over a network of multiple computing devices.
  • the terminal establishes multiple radio links (Radio Link) on multiple unlicensed carrier frequencies and multiple secondary serving cells to maximize the utilization of the surrounding unlicensed carrier resources and improve resource utilization.
  • Radio Link Radio Link

Abstract

La présente invention concerne un procédé et un dispositif permettant de commander et de gérer des ressources de cellules de desserte secondaires. Le procédé comprend les étapes suivantes : une station de base évoluée acquiert et configure des cellules de desserte secondaires d'un terminal ; et la station de base évoluée effectue un réglage pour permettre à au moins deux des cellules de desserte secondaires du terminal d'utiliser des ressources d'une même largeur de bande de porteuse non autorisée ou autorisée.
PCT/CN2015/090959 2015-01-16 2015-09-28 Procédé et dispositif pour commander et gérer des ressources de cellules de desserte secondaires WO2016112715A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201510023354.2A CN105848292B (zh) 2015-01-16 2015-01-16 一种辅服务小区的资源的管理方法和装置
CN201510023354.2 2015-01-16

Publications (1)

Publication Number Publication Date
WO2016112715A1 true WO2016112715A1 (fr) 2016-07-21

Family

ID=56405214

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2015/090959 WO2016112715A1 (fr) 2015-01-16 2015-09-28 Procédé et dispositif pour commander et gérer des ressources de cellules de desserte secondaires

Country Status (2)

Country Link
CN (1) CN105848292B (fr)
WO (1) WO2016112715A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107769830A (zh) * 2016-08-19 2018-03-06 中兴通讯股份有限公司 协同工作子状态的方法、装置及系统

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017180045A1 (fr) * 2016-04-11 2017-10-19 Telefonaktiebolaget Lm Ericsson (Publ) Atténuation de déformation intermodulation dans une agrégation de porteuse autorisée/non autorisée mélangée
CN106255123B (zh) * 2016-09-09 2022-10-21 宇龙计算机通信科技(深圳)有限公司 通信方法和通信装置
CN106454910B (zh) * 2016-09-09 2022-09-02 宇龙计算机通信科技(深圳)有限公司 通信方法、通信装置和终端
CN106255124B (zh) * 2016-09-09 2022-12-20 宇龙计算机通信科技(深圳)有限公司 通信方法和通信装置
CN115866771A (zh) * 2020-02-14 2023-03-28 Oppo广东移动通信有限公司 载波调度的方法及装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102158948A (zh) * 2011-02-16 2011-08-17 普天信息技术研究院有限公司 载波聚合中获得上行定时提前量的方法
CN102232307A (zh) * 2011-06-16 2011-11-02 华为技术有限公司 动态频谱分配方法、中心控制单元、基站及频谱分配系统
CN102960022A (zh) * 2010-06-28 2013-03-06 高通股份有限公司 多点hsdpa通信网络中的移动性
WO2014017767A1 (fr) * 2012-07-23 2014-01-30 엘지전자 주식회사 Procédé d'exploitation de cellule de service dans un système de communication sans fil, auquel un régime d'agrégation de porteuse est appliqué et dispositif associé

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102045781B (zh) * 2009-10-14 2013-09-11 电信科学技术研究院 调度终端的方法、系统及设备
US9480098B2 (en) * 2010-08-16 2016-10-25 Htc Corporation Handling radio resource control connection reconfiguration and related communication device
KR101633209B1 (ko) * 2012-04-05 2016-07-01 엘지전자 주식회사 무선통신 시스템에서 반송파 집성 방법 및 장치

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102960022A (zh) * 2010-06-28 2013-03-06 高通股份有限公司 多点hsdpa通信网络中的移动性
CN102158948A (zh) * 2011-02-16 2011-08-17 普天信息技术研究院有限公司 载波聚合中获得上行定时提前量的方法
CN102232307A (zh) * 2011-06-16 2011-11-02 华为技术有限公司 动态频谱分配方法、中心控制单元、基站及频谱分配系统
WO2014017767A1 (fr) * 2012-07-23 2014-01-30 엘지전자 주식회사 Procédé d'exploitation de cellule de service dans un système de communication sans fil, auquel un régime d'agrégation de porteuse est appliqué et dispositif associé

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107769830A (zh) * 2016-08-19 2018-03-06 中兴通讯股份有限公司 协同工作子状态的方法、装置及系统

Also Published As

Publication number Publication date
CN105848292A (zh) 2016-08-10
CN105848292B (zh) 2021-08-17

Similar Documents

Publication Publication Date Title
EP3089531B1 (fr) Terminal utilisateur et procédé de communication radio
CN108270540B (zh) 多点载波聚合配置以及数据转发方法
US20180020375A1 (en) User terminal, base station, and communication apparatus
JP6093736B2 (ja) ユーザ端末、無線基地局、無線通信方法及び無線通信システム
JP6806568B2 (ja) ユーザ端末及び基地局
US11147081B2 (en) User terminal, radio base station, and radio communication method
WO2016112715A1 (fr) Procédé et dispositif pour commander et gérer des ressources de cellules de desserte secondaires
JP6805128B2 (ja) ユーザ端末及び基地局
WO2016017355A1 (fr) Terminal utilisateur, station de base sans fil, procédé de communication sans fil et système de communication sans fil
WO2016182046A1 (fr) Terminal d'utilisateur et procédé de communication sans fil
JP2016219895A (ja) ユーザ端末、無線基地局及び無線通信方法
JP6382499B2 (ja) 無線基地局、ユーザ端末及び無線通信方法
JP6101486B2 (ja) バッファ状態報告の送信制御方法、ユーザ装置、および無線通信システム
US20120230260A1 (en) Apparatus and Method for Allocating Communication Resources in a Communication System
US10075981B2 (en) Radio communication terminal, radio base station and radio communication method
US10129804B2 (en) Base station
JP2017063326A (ja) ユーザ端末、無線基地局及び無線通信方法
WO2012042736A1 (fr) Appareil de communication sans fil, système de communication sans fil et terminal de communication sans fil
JP2017127004A (ja) ユーザ端末、無線基地局及び無線通信方法
US20240056915A1 (en) Mobility management method and communication apparatus
JP6282830B2 (ja) 基地局、ユーザ端末及び無線通信制御方法
WO2015016081A1 (fr) Station de base, terminal utilisateur, et procédé de commande de communication sans fil
KR20140121050A (ko) 이중 연결성을 지원하는 무선 통신 시스템에서 상향링크 데이터 전송 제어방법 및 장치
WO2016017357A1 (fr) Station de base sans fil, terminal utilisateur et procédé de communication sans fil

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 15877628

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 15877628

Country of ref document: EP

Kind code of ref document: A1