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WO2012079476A1 - Procédé et dispositif permettant de traiter une ressource de spectre - Google Patents

Procédé et dispositif permettant de traiter une ressource de spectre Download PDF

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Publication number
WO2012079476A1
WO2012079476A1 PCT/CN2011/083452 CN2011083452W WO2012079476A1 WO 2012079476 A1 WO2012079476 A1 WO 2012079476A1 CN 2011083452 W CN2011083452 W CN 2011083452W WO 2012079476 A1 WO2012079476 A1 WO 2012079476A1
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WIPO (PCT)
Prior art keywords
spectrum resource
downlink
uplink
data transmission
spectrum
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2011/083452
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English (en)
Chinese (zh)
Inventor
梁靖
李国庆
许芳丽
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Datang Mobile Communications Equipment Co Ltd
Original Assignee
Datang Mobile Communications Equipment Co Ltd
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Filing date
Publication date
Application filed by Datang Mobile Communications Equipment Co Ltd filed Critical Datang Mobile Communications Equipment Co Ltd
Publication of WO2012079476A1 publication Critical patent/WO2012079476A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT
    • H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT the frequencies being arranged in component carriers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0044—Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/14—Two-way operation using the same type of signal, i.e. duplex
    • H04L5/1469—Two-way operation using the same type of signal, i.e. duplex using time-sharing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices

Definitions

  • FIG. 1 is a schematic diagram of a TDD (Time Division Duplex) and FDD (Frequency Division Duplex) frequency usage scheme, taking a 2.6 GHz frequency as an example, as shown in FIG. 1 , currently feasible.
  • a TDD and FDD spectrum usage scheme is: Between the TDD spectrum and the FDD spectrum, two parts of the protection bandwidths G1 and G2 are set aside to avoid interference between the two.
  • the technical problem solved by the present invention is to provide a method and a device for processing spectrum resources, which are used to improve the efficiency of use of HF.
  • a method for processing a spectrum resource including the following steps:
  • the base station determines the spectrum resource to be processed, and the spectrum resource can be used for uplink data transmission, and the downlink spectrum resource that has no uplink-downlink relationship with the spectrum resource is used for downlink data transmission, or the spectrum resource can be used for The downlink data transmission is performed, and the uplink spectrum resource having no uplink-downlink relationship with the spectrum resource is used for uplink data transmission.
  • the base station After determining that the spectrum resource needs to be utilized, the base station notifies the UE to aggregate the spectrum resource by using a carrier aggregation technology.
  • a method for processing a spectrum resource including the following steps:
  • the UE receives the base station notification, and acquires the spectrum resource indicated in the notification, where the spectrum resource can be used for uplink data transmission, and the downlink spectrum resource that has no uplink-downlink relationship with the spectrum resource is used for downlink data transmission, or The spectrum resource can be used for downlink data transmission, and the uplink spectrum resource having no uplink-downlink relationship with the spectrum resource is used for uplink data transmission;
  • the UE aggregates the spectrum resources using a carrier aggregation technique according to the notification.
  • a base station is provided in the embodiment of the present invention, including:
  • a determining module configured to determine a spectrum resource to be processed, where the spectrum resource can be used for uplink data transmission, and the downlink spectrum resource that has no uplink-downlink relationship with the spectrum resource is used for downlink data transmission, or the spectrum is The resource can be used for downlink data transmission, and the uplink spectrum resource having no uplink-downlink relationship with the spectrum resource is used for uplink data transmission;
  • a notification module configured to notify the UE to aggregate the spectrum resource by using a carrier aggregation technology after determining that the spectrum resource needs to be utilized.
  • a user equipment is provided in the embodiment of the present invention, including:
  • a receiving module configured to receive a base station notification, to obtain a spectrum resource indicated in the notification, where the spectrum resource can be used for uplink data transmission, and the downlink spectrum resource that has an uplink-downlink relationship with the spectrum resource is used for downlink data. Or, the spectrum resource can be used for downlink data transmission, and the uplink spectrum resource that has no uplink-downlink relationship with the spectrum resource is used for uplink data transmission;
  • an aggregation module configured to aggregate the spectrum resource by using a carrier aggregation technology according to the notification.
  • the asymmetric spectrum resource such as the spectrum resource in the protection bandwidth
  • the asymmetric spectrum resource can be used after being aggregated by using a carrier aggregation technology, so that the terminal can be in an asymmetric spectrum resource such as a protection bandwidth.
  • Working in the community improves the efficiency of frequency usage and reduces system cost.
  • FIG. 1 is a schematic diagram of a TDD and FDD spectrum usage scheme in the background art
  • FIG. 2 is a schematic diagram of a TDD and FDD spectrum usage scheme using a protection bandwidth according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of a carrier distribution of an LTE cell according to an embodiment of the present invention
  • FIG. 4 is a schematic diagram of carrier allocation of an LTE cell using a CA according to an embodiment of the present invention
  • FIG. 5 is a schematic flowchart of a method for performing processing on a spectrum resource by a base station according to an embodiment of the present invention
  • FIG. 6 is a schematic flowchart of a method for processing a spectrum resource by a UE according to an embodiment of the present invention
  • FIG. 8 is a schematic structural diagram of a user equipment according to an embodiment of the present invention. detailed description
  • Among the existing spectrum resources there are some asymmetric spectrum resources, which can be used for uplink data transmission. However, they do not have corresponding spectrum resources for downlink data transmission, or these spectrum resources can be used for downlink data. Transmission, however, they do not have corresponding spectrum resources for uplink data transmission.
  • the following uses a virtual TDD cell as an example to illustrate this type of spectrum resource.
  • Figure 2 is a schematic diagram of TDD and FDD frequency usage schemes with reserved protection bandwidth, one utilizing two protection bandwidths
  • the G1 and G2 schemes can utilize the uplink U3 and downlink D4 spectrum resources. Since the FDD band adjacent to G1 is used for uplink transmission, in order to avoid interference, only uplink U3 spectrum resources are used to transmit uplink data. By the same token, the downlink D4 spectrum resource only transmits downlink data.
  • a feasible solution is to form the downlink D3 and the uplink U3 into a virtual TDD cell (only the uplink U3 corresponds to the actual physical resource, and the downlink D3 is the virtual logical concept), and the uplink U4 And the downlink D4 constitutes a virtual TDD cell (only the downlink D4 corresponds to the actual physical resource, and the uplink U4 is a virtual logical concept). Both of these cells can be referred to as virtual TDD cells.
  • the UE can only work in an FDD cell or a symmetric TDD cell (that is, a TDD cell in which both uplink and downlink work on the same frequency).
  • a symmetric TDD cell that is, a TDD cell in which both uplink and downlink work on the same frequency.
  • the UE may work on an asymmetric TDD cell.
  • the TDD cell has only one transmission direction. The other direction of the actual spectrum resources is virtual.
  • the spectrum resource can be used for uplink data transmission but no corresponding spectrum resource is used for downlink data transmission, or the spectrum resource can be used for uplink data transmission but no corresponding spectrum resource is used for downlink data transmission, where the correspondence can be Corresponding to the TDD mode, the spectrum resources used for uplink data transmission and the spectrum resources used for downlink data transmission are co-frequency resources and operate in different time slots.
  • LTE Long Term Evolution
  • the peak rate of the system is greatly improved compared to LTE, and it is required to achieve downlink lGbps, uplink.
  • the LTE-A system needs to expand the bandwidth that the terminal can use, thereby introducing a CA (Carrier Aggregation) technology, which is to aggregate multiple consecutive or discontinuous carriers under the same e B (Evolved Base Station). At the same time, it serves the UE (User Equipment) to provide the rate required for data transmission. These aggregated carriers are also referred to as component carriers (CC).
  • the carrier used by each cell may be a component carrier, and carriers (member carriers) used by cells under different eNBs cannot be aggregated.
  • Figure 4 shows the LTE of CA The carrier distribution diagram of the cell, as shown in the figure, in order to ensure that the UE can work under each aggregated carrier, the maximum bandwidth of each carrier does not exceed 20 MHz.
  • the UE can only aggregate FDD cells or symmetric TDD cells.
  • some of the asymmetric resources originally used as protection bandwidths can be utilized as virtual TDD cells.
  • protection bandwidth when such protection bandwidth is used as the TDD mode, there will be cases where the uplink and downlink respectively operate on different frequencies. Therefore, it is necessary to give the working mode of TDD in the above scenario.
  • the embodiment of the present invention proposes a logical concept TDD cell in which only the actual physical resource exists in the uplink, and the downlink is virtual, or only the physical resource in the downlink exists, and the uplink is a virtual logical concept on the TDD cell.
  • the implementations of the UE side and the base station side will be described separately, and then the implementation of the two will be described by way of example, but this does not mean that the two must cooperate with the implementation.
  • the problems existing on the UE side and the base station side are also respectively solved, but when the two are used in combination, a better technical effect is obtained.
  • Step 501 A base station determines a spectrum resource to be processed, where the spectrum resource can be used for uplink data transmission, and the spectrum resource is not used.
  • the downlink spectrum resource having the uplink-downlink correspondence is used for downlink data transmission, or the spectrum resource can be used for downlink data transmission, and the uplink spectrum resource having no uplink-downlink relationship with the spectrum resource is used for uplink data transmission;
  • the uplink-downlink correspondence may be that the spectrum resource used for uplink data transmission and the spectrum resource used for downlink data transmission are co-frequency resources and work in different time slots.
  • Step 502 After determining, by the base station, that the spectrum resource needs to be utilized, notify the UE to use the carrier aggregation technology to aggregate the spectrum resource. Specifically, the UE is notified to add the spectrum resource to the carrier aggregation set, and the spectrum resource in the carrier aggregation set is aggregated by using a carrier aggregation technology, and the spectrum resource participates in the carrier set and is effectively utilized.
  • the base station determines that the spectrum resource needs to be used for uplink data transmission. Determining that the spectrum resource needs to be utilized; if the spectrum resource can be used for downlink data transmission, and the downlink spectrum resource having the uplink-downlink relationship with the spectrum resource is used for uplink data transmission, the base station determines that the When the spectrum resource is used for downlink data transmission, it is determined that the spectrum resource needs to be utilized.
  • the uplink-downlink correspondence is consistent with the uplink-downlink correspondence defined by LTE Rel-8/Rel-9.
  • the spectrum resource may be when TDD and FDD are used for data transmission, in TDD and
  • the spectrum resource may be a carrier used by a secondary cell with only an uplink carrier, or may be an extended carrier or a carrier segment (segment). among them:
  • the secondary cell is a carrier that is used by the UE and has one or more secondary cells.
  • the primary cell has a PUCCH (Physical Uplink Control Channel) and can perform radio link detection. Random access and provision of NAS (Non-Access Stratum, non-access stratum) mobility information.
  • the secondary cell does not have the above functions, but is used as an additional resource. Both the primary cell and the secondary cell are backward compatible (compatible with LTE Rel-8/Rel-9).
  • Extended carrier carrier resources different from the carrier used by the primary cell and the secondary cell, not backward compatible, may be
  • Carrier segment A carrier resource that is different from the carrier used by the primary cell and the secondary cell and the extended carrier. Generally, the bandwidth is narrow and cannot work independently. It may be aggregated by terminals in Rel-11 and later versions.
  • the base station may notify the UE to aggregate the spectrum resource by using RRC (Radio Resource Control) signaling.
  • RRC Radio Resource Control
  • the base station may also notify the UE of one or any combination of the following parameters through RRC signaling:
  • the uplink configuration parameter of the spectrum resource the cross-carrier scheduling parameter of the spectrum resource, the downlink configuration parameter of the spectrum resource, and the common configuration parameter of the spectrum resource.
  • the base station may further indicate that the path loss reference and the timing reference of the spectrum resource of the UE are: a path loss reference and a timing reference of the reference cell explicitly configured by the RRC signaling; or are in the same band (band) as the spectrum resource. a path loss reference and timing reference of other cells outside the cell to which the spectrum resource belongs; or a path loss reference and timing reference of the primary cell; or a path loss reference and timing reference of the cell scheduling the spectrum resource.
  • the path loss reference and the timing reference of the virtual cell to which the spectrum resource belongs may be a reference cell explicitly configured by RRC signaling, or another cell in the same band, or a primary cell, or a cell scheduling the spectrum resource.
  • Road loss reference and timing reference may be a reference cell explicitly configured by RRC signaling, or another cell in the same band, or a primary cell, or a cell scheduling the spectrum resource.
  • Road loss reference and timing reference may be a reference cell explicitly configured by RRC signaling, or another cell in the same band, or a primary cell, or a cell scheduling the spectrum resource.
  • the base station may separately activate or deactivate the spectrum resource by using a MAC CE (MAC: Media Access Control, CE: Control Element, Control Unit).
  • MAC Media Access Control
  • CE Control Element, Control Unit
  • the base station may separately activate and deactivate the virtual cell to which the spectrum resource belongs by using the MAC CE.
  • the spectrum resource can be used for uplink data transmission, and the downlink spectrum resource that has no uplink-downlink relationship with the spectrum resource is used for downlink data transmission, and the base station can also perform carrier tube according to the uplink signal of the spectrum resource.
  • the base station performs carrier management according to the downlink signal of the spectrum resource.
  • the base station may perform carrier management according to the uplink signal of the virtual cell to which the spectrum resource belongs, that is, perform carrier scheduling, deactivation, and release according to the uplink signal shield, and the uplink signal includes an SRS (Sounding Reference Symbol), PUSCH (Physical Uplink Shared Channel).
  • SRS Sounding Reference Symbol
  • PUSCH Physical Uplink Shared Channel
  • the method further includes: configuring, by the base station, the related parameter of the spectrum resource for the UE, where the base station initially uses the full configuration mode when configuring the relevant parameter of the spectrum resource for the UE, and then needs to modify the relevant parameter, and then use the full configuration or The incremental configuration mode updates the related parameters of the configuration.
  • the base station may use a full configuration when initially adding the virtual cell to the UE, and subsequent modification of the virtual cell parameter may use a full configuration or an incremental configuration.
  • the base station when the spectrum resource can be used for uplink data transmission, and the downlink spectrum resource that has no uplink-downlink relationship with the spectrum resource is used for downlink data transmission, the base station may not configure A1 or A2 or A6 for the spectrum resource. Measure events.
  • the network does not configure an A1/A2/A6 measurement event for the virtual cell to which the spectrum resource belongs, and the UE does not perform measurement in the downlink subframe position of the virtual cell.
  • the base station may also schedule UEs across carriers to use the spectrum resources.
  • FIG. 6 is a schematic flowchart of a method for performing processing on a spectrum resource by a UE, and may include the following steps: Step 601: A UE receives a notification of a base station, and acquires a spectrum resource indicated in the notification, where the spectrum resource can be used for uplink data transmission. And the downlink spectrum resource that has no uplink-downlink relationship with the spectrum resource is used for downlink data transmission, or the spectrum resource can be used for downlink data transmission, and there is no uplink with uplink/downlink relationship with the spectrum resource. Spectrum resources are used for uplink data transmission;
  • Step 602 The UE aggregates the spectrum resource by using a carrier aggregation technology according to the notification. Specifically, the UE adds the spectrum resource to the carrier aggregation set according to the notification, and aggregates the spectrum resource in the carrier aggregation set by using a carrier aggregation technology.
  • the spectrum resource may be a spectrum resource in a protection bandwidth between a TDD and an FDD spectrum resource when data transmission is performed by using the TDD and FDD modes.
  • the notification may be notified by the base station by using RRC signaling.
  • the UE may also use the carrier aggregation technology to aggregate the spectrum resource according to one or any combination of the following parameters that the base station notifies the UE through RRC signaling:
  • the uplink configuration parameter of the spectrum resource the cross-carrier scheduling parameter of the spectrum resource, and the downlink configuration of the spectrum resource Parameters, common configuration parameters of the spectrum resource.
  • the UE may also be scheduled across carriers to use the spectrum resource.
  • the UE when the acquired spectrum resource can be used for uplink data transmission, and the downlink spectrum resource that has no uplink-downlink relationship with the spectrum resource is used for downlink data transmission, the UE may also include the spectrum in determining the RRC signaling.
  • the TDD configuration parameter of the resource and/or the MBSFN (Multicast Broadcast Single Frequency Network) subframe configuration parameter the UE uses the reference cell explicitly configured by the RRC signaling, or is in the same band as the spectrum resource.
  • the parameters of the other cells except the cell to which the spectrum resource belongs, or the primary cell, or the cell that schedules the spectrum resource are used as the TDD configuration parameter and/or the MBSFN subframe configuration parameter of the spectrum resource.
  • the UE may further allocate the reference cell that is explicitly configured by the RRC signaling, or other cells outside the cell to which the spectrum resource belongs, or the primary cell, or schedule the spectrum, according to the indication of the base station.
  • the path loss reference and timing reference of the resource cell are used as the path loss reference and timing reference of the spectrum resource.
  • the path loss reference and the timing reference of the virtual cell to which the spectrum resource belongs may be a reference cell that is explicitly configured by the RRC signaling, or another cell except the cell to which the spectrum resource belongs in the same band as the spectrum resource. Or the primary cell, or the path loss reference and timing reference of the cell that schedules the virtual cell.
  • the UE may also separately activate or deactivate the spectrum resource according to the received MAC CE.
  • the base station may separately activate and deactivate the virtual cell to which the spectrum resource belongs by using the MAC CE.
  • the UE may also not detect the PDCCH (physical downlink control channel) of the spectrum resource in the downlink subframe position of the spectrum resource; or may not accept the downlink scheduling; or ignore the received downlink scheduling signal. make.
  • PDCCH physical downlink control channel
  • the acquired spectrum resource can be used for uplink data transmission, and when the downlink spectrum resource that has the uplink-downlink relationship with the spectrum resource is used for downlink data transmission, the UE is in the downlink subframe of the virtual cell to which the spectrum resource belongs.
  • the location does not detect the PDCCH of the local cell, does not accept the downlink scheduling (does not receive the PDSCH of the local cell); if the downlink scheduling signaling is received, the UE actively ignores.
  • the acquired spectrum resource can be used for downlink data transmission, and the downlink spectrum resource that has no uplink-downlink relationship with the spectrum resource is used for uplink data transmission, the UE does not accept uplink scheduling in the uplink subframe position of the spectrum resource. Or ignore the received uplink scheduling signaling.
  • the obtained spectrum resource can be used for uplink data transmission, and when the downlink spectrum resource that has the uplink-downlink relationship with the spectrum resource is used for downlink data transmission, the UE can also be in the downlink subframe position of the spectrum resource. No measurement is taken.
  • the acquired spectrum resource can be used for downlink data transmission, and the downlink spectrum resource that has no uplink-downlink relationship with the spectrum resource is used for uplink data transmission, and the UE does not perform measurement on the uplink subframe position of the acquired spectrum resource.
  • the acquired spectrum resource can be used for uplink data transmission, and has no uplink/downlink corresponding to the spectrum resource.
  • the network does not configure the virtual cell to which the spectrum resource belongs.
  • the A1/A2/A6 measurement event the UE does not measure at the downlink subframe position of the cell.
  • the UE may also perform radio link monitoring on a downlink subframe position of the spectrum resource.
  • the acquired spectrum resource can be used for uplink data transmission, and when the downlink spectrum resource that has the uplink-downlink relationship with the spectrum resource is used for downlink data transmission, the UE is in the downlink subframe of the virtual cell to which the spectrum resource belongs. Location, no wireless link monitoring.
  • the acquired spectrum resource can be used for downlink data transmission, and the downlink spectrum resource that has no uplink-downlink relationship with the spectrum resource is used for uplink data transmission, the UE does not perform the wireless chain on the uplink subframe position of the acquired spectrum resource. Road monitoring.
  • the base station notifies the UE of one of the following parameters or a combination thereof by using RRC signaling: an uplink configuration parameter of the spectrum resource, a cross-carrier scheduling parameter of the spectrum resource, a downlink configuration parameter of the spectrum resource, and a common configuration parameter of the spectrum resource.
  • the UE when the UE aggregates the spectrum resource by using a carrier aggregation technology according to one of the foregoing parameters of the UE or the combination of the foregoing parameters, the UE may be as follows:
  • the base station may include, in the RRC signaling, an uplink configuration parameter of the virtual cell to which the spectrum resource belongs, a center frequency of the uplink carrier, a bandwidth, a maximum allowed uplink transmit power, an uplink CP (Cyclic Prefix), and a power control.
  • the base station may include cross-carrier scheduling parameters of the virtual cell to which the spectrum resource belongs in the RRC signaling, such as scheduling other cells of the virtual cell.
  • Cell index
  • the base station may include, in the RRC signaling, a downlink configuration parameter of the virtual cell to which the spectrum resource belongs, such as a cell index, a cell identifier (a frequency point, and a physical cell identity (PCI));
  • a downlink configuration parameter of the virtual cell to which the spectrum resource belongs such as a cell index, a cell identifier (a frequency point, and a physical cell identity (PCI)
  • the eNB may include common configuration parameters of the virtual cell to which the spectrum resource belongs, such as TDD configuration (including subframe configuration and special subframe configuration), MBSFN subframe configuration, and the like.
  • the other is also applicable to the one-way, only the uplink virtual FDD cell, only the uplink secondary cell (including TDD and FDD), the extended carrier, the carrier segment, and the separate uplink. FDD carrier.
  • the spectrum resources used by Cell 1 are adjacent to the uplink spectrum resources of the FDD cell, and there is a protection bandwidth G1 between the two, and the spectrum resources used by the cell 2 and the downlink spectrum of the FDD cell.
  • the resources are adjacent, and there is a protection bandwidth G2 between the two.
  • an uplink U3 is introduced in G1.
  • the virtual TDD cell, in G2, introduces a virtual TDD cell with only downlink D4.
  • the UE is currently working on the cell 1 and the cell 2, and the cell 1 is the primary cell. Because the uplink traffic increases, the network decides to add the aggregated carrier to the UE, that is, the UE aggregates U3. At this time, the network combines U3 and D3 into a virtual TDD cell, and then informs the UE of the uplink, downlink, cross-carrier scheduling, and common configuration information of the virtual TDD cell by using RRC dedicated signaling, because the virtual TDD cell is initially added.
  • the relevant parameters in the RRC signaling can be used in a fully configured manner.
  • the uplink configuration parameter includes a center frequency of the uplink carrier of the virtual TDD cell, a bandwidth, a maximum allowed uplink transmit power, an uplink CP length, a power control related parameter, an antenna related parameter, a PUSCH/SRS transmission related parameter, and the like;
  • the parameters include a cell index of the virtual TDD cell, a cell identifier (frequency point and PCI), and the like;
  • the cross-carrier scheduling parameter includes a cell index of another cell that schedules the virtual TDD cell;
  • the common configuration parameter includes a TDD configuration of the virtual TDD cell (including a sub- Frame configuration and special subframe configuration), MBSFN subframe configuration, etc.
  • the UE receives the RRC signaling, adds the virtual TDD cell (U3) to the carrier aggregation set, and then performs configuration using parameters in the RRC signaling.
  • the base station then activates the UE to operate on the cell through the MAC CE.
  • the base station allocates the path loss reference and the timing reference of the virtual TDD cell to the cell 1, and the UE works on the virtual TDD cell according to the reference information of the cell 1.
  • the base station configures the virtual TDD cell as a cross-carrier scheduling, and the cell that schedules it is the cell 1.
  • the UE monitors the PDCCH of the cell 1 during operation, accepts the uplink scheduling signaling scheduled by the U3, and performs uplink data transmission on the U3.
  • the base station configures the SRS and schedules the PUSCH data to obtain the uplink channel shield information of the U3, and performs carrier management on the cell (U3). If the SRS channel of U3 is poor, the base station can deactivate the virtual cell through the MAC CE or release the virtual cell through RRC signaling.
  • the UE works on the virtual TDD cell (U3), the PDCCH of the local cell is not detected, and the downlink scheduling is not accepted (the PDSCH of the local cell is not received) in the downlink subframe position of the cell, if the downlink scheduling signaling is received. Then, the UE actively ignores, and the UE does not perform measurement (including RSRP, RSRQ, etc.), and does not perform radio link monitoring.
  • Embodiment 1 This embodiment will describe the implementation of an aggregated downlink TDD virtual cell.
  • the network scenario is the same as in Embodiment 1:
  • the UE currently works on the cell 1 and the cell 2.
  • the network decides to add an aggregated carrier to the UE, that is, the UE aggregates D4.
  • the network forms D4 and U4 into a virtual TDD cell, and then reports the downlink, cross-carrier scheduling, and common configuration information of the cell to the UE through RRC dedicated signaling.
  • the downlink configuration parameter includes a cell index of the virtual TDD cell, a cell identifier (frequency point and PCI), and the like;
  • the cross-carrier scheduling parameter includes a cell index of another cell that schedules the virtual TDD cell;
  • the common configuration parameter includes a TDD configuration of the virtual TDD cell. (including subframe configuration and special subframe configuration), MBSFN subframe configuration, and so on.
  • the UE receives the RRC signaling, adds the virtual TDD cell (D4) to the carrier aggregation set, and then configures using parameters in the RRC signaling.
  • the base station then activates the UE to work on the virtual TDD cell through the MAC CE.
  • Base configures the path loss reference and the timing reference of the virtual TDD cell on the cell itself. Base station by configuring RRM
  • Radio Resource Management Radio Resource Management
  • CQI Channel Quality Indicator
  • D4 Downlink channel shield information of D4
  • the base station may activate the virtual cell by using the MAC CE, or release the virtual cell by using RRC signaling.
  • the UE does not accept the uplink scheduling of the cell. If the uplink scheduling signaling is received, the UE actively ignores, and does not perform uplink signal transmission such as PUSCH, CQI feedback, and SRS in the uplink subframe position of the cell.
  • a base station and a user equipment are also provided in the embodiment of the present invention. Since the principle of solving the problem is similar to the method for processing the spectrum resource, the implementation of the device may refer to the implementation of the method. The repetitions are not repeated here.
  • FIG. 7 is a schematic structural diagram of a base station. As shown in the figure, the base station may include:
  • a determining module 701 configured to determine a spectrum resource to be processed, where the spectrum resource can be used for uplink data transmission, and the downlink spectrum resource that has an uplink-downlink relationship with the spectrum resource is used for downlink data transmission, or The spectrum resource can be used for downlink data transmission, and the uplink spectrum resource having no uplink-downlink relationship with the spectrum resource is used for uplink data transmission;
  • the notification module 702 is configured to: after determining that the spectrum resource needs to be utilized, notify the UE to use the carrier aggregation technology to aggregate the spectrum resource.
  • the spectrum resource is a spectrum resource in a protection bandwidth between a TDD and an FDD spectrum resource when data transmission is performed by using the TDD and FDD modes.
  • the notification module is further configured to notify the UE to aggregate the spectrum resource by using RRC signaling.
  • the notification module may be further configured to notify the UE of one of the following parameters or a combination thereof by using RRC signaling: an uplink configuration parameter of the spectrum resource, a cross-carrier scheduling parameter of the spectrum resource, a downlink configuration parameter of the spectrum resource, Common configuration parameters for spectrum resources.
  • the base station may further include:
  • the indication module is configured to indicate that the path loss reference and the timing reference of the spectrum resource of the UE are: a reference cell explicitly configured by the RRC signaling, or another cell except the cell to which the spectrum resource belongs in the same band as the spectrum resource, or The path loss reference and timing reference used by the primary cell or the cell scheduling the spectrum resource.
  • the base station may further include:
  • An activation module for separately activating or deactivating the spectrum resource using the MAC CE.
  • the base station may further include:
  • a carrier management module configured to be used in the uplink data transmission in the spectrum resource, and not having the spectrum resource
  • carrier management is performed according to the uplink signal of the spectrum resource; the spectrum resource can be used for downlink data transmission, and there is no uplink/downlink relationship with the spectrum resource.
  • carrier management is performed according to the downlink signal of the spectrum resource.
  • the base station may further include:
  • a configuration module configured to configure a related parameter of the spectrum resource for the UE, where the initial configuration mode is used when the UE initially configures the determined first spectrum resource, and when the related parameter needs to be modified,
  • the incremental configuration mode updates the related parameters of the configuration.
  • the base station may further include:
  • a measurement module configured to configure A1 or A2 or A6 for the spectrum resource when the downlink resource resource that can be used for uplink data transmission and has no uplink-downlink relationship with the spectrum resource is used for downlink data transmission Measure events.
  • the base station may further include:
  • a scheduling module configured to cross-carrier scheduling to use the spectrum resource.
  • FIG. 8 is a schematic structural diagram of a user equipment. As shown in the figure, the UE may include:
  • the receiving module 801 is configured to receive a base station notification, and obtain the spectrum resource indicated in the notification, where the spectrum resource can be used for uplink data transmission, and the downlink spectrum resource that has no uplink-downlink relationship with the spectrum resource is used for downlink data. Or, the spectrum resource can be used for downlink data transmission, and the uplink spectrum resource that has no uplink-downlink relationship with the spectrum resource is used for uplink data transmission;
  • the aggregation module 802 is configured to aggregate the spectrum resource by using a carrier aggregation technology according to the notification.
  • the spectrum resource is a spectrum resource in a protection bandwidth between a TDD and an FDD spectrum resource when data transmission is performed by using the TDD and FDD modes.
  • the receiving module is further configured to receive a notification that the base station performs by using RRC signaling.
  • the aggregation module may be further configured to aggregate the spectrum resource by using a carrier aggregation technology according to one of the following parameters, or a combination thereof, that the base station notifies the UE through RRC signaling:
  • the uplink configuration parameter of the spectrum resource the cross-carrier scheduling parameter of the spectrum resource, the downlink configuration parameter of the spectrum resource, and the common configuration parameter of the spectrum resource.
  • the user equipment may further include:
  • the obtained spectrum resource can be used for uplink data transmission, and the downlink spectrum resource that has no uplink-downlink relationship with the spectrum resource is used for downlink data transmission, and the spectrum is not included in determining RRC signaling.
  • the TDD configuration parameter of the resource and/or the MBSFN subframe configuration parameter the reference cell explicitly configured by the RRC signaling, or other cells outside the cell to which the spectrum resource belongs in the same band as the spectrum resource, or the primary cell, Or schedule this The parameter of the cell of the spectrum resource, as the TDD configuration parameter of the spectrum resource and/or the MBSFN subframe configuration parameter.
  • the user equipment may further include:
  • path loss and timing module a reference cell for explicitly configuring RRC signaling, or other cells, or a primary cell, or a cell that schedules the spectrum resource, in addition to the spectrum resource in the same band except the cell to which the spectrum resource belongs
  • the path loss reference and timing reference are used as the path loss reference and timing reference for the spectrum resource.
  • the user equipment may further include:
  • An activation module configured to separately activate or deactivate the spectrum resource according to the received MAC CE.
  • the user equipment may further include:
  • a detecting module configured to: when the acquired spectrum resource can be used for uplink data transmission, and the downlink spectrum resource that has no uplink-downlink relationship with the spectrum resource is used for downlink data transmission, at a downlink subframe position of the spectrum resource
  • the PDCCH of the spectrum resource is not detected, or the downlink scheduling is not accepted, or the received downlink scheduling signaling is ignored.
  • the acquired spectrum resource can be used for downlink data transmission, and there is no uplink/downlink relationship with the spectrum resource.
  • the uplink scheduling is not accepted or the received uplink scheduling signaling is ignored in the uplink subframe position of the spectrum resource.
  • the user equipment may further include:
  • a measurement module configured to: when the acquired spectrum resource can be used for uplink data transmission, and the downlink spectrum resource that has no uplink-downlink relationship with the spectrum resource is used for downlink data transmission, at a downlink subframe position of the spectrum resource No measurement is performed; when the acquired spectrum resource can be used for downlink data transmission, and the downlink spectrum resource having no uplink-downlink relationship with the spectrum resource is used for uplink data transmission, the uplink subframe position of the acquired spectrum resource is used. No measurement is taken.
  • the user equipment may further include:
  • a monitoring module configured to: when the acquired spectrum resource can be used for uplink data transmission, and the downlink spectrum resource that has no uplink-downlink relationship with the spectrum resource is used for downlink data transmission, at a downlink subframe position of the spectrum resource Radio link monitoring is not performed; when the acquired spectrum resource can be used for downlink data transmission, and the downlink spectrum resource having no uplink-downlink relationship with the spectrum resource is used for uplink data transmission, the uplink of the acquired spectrum resource Radio link monitoring is not performed at the frame position.
  • the carrier aggregation technology is used to enable the UE to work on only the actual physical resources on the uplink and the virtual TDD cells on the downlink.
  • the specific can be as follows: UE side:
  • the UE aggregates one or more virtual TDD cells by using carrier aggregation technology according to RRC signaling of the base station; Further, the UE aggregates the virtual TDD cell to work according to uplink, downlink, cross-carrier scheduling, and common configuration information in the RRC signaling; the uplink resource of the virtual TDD cell is always scheduled by cross-carrier; if RRC signaling
  • the TDD configuration and/or the MBSFN subframe configuration parameter is not included, then the UE considers that the parameters of the virtual TDD cell are the same as the cell in which it is scheduled, or the same as other cells in the same band, or the same as the primary cell, or with the RRC letter.
  • the cell that is explicitly indicated by the UE is the same; the UE considers that the path loss reference and the timing reference of the virtual TDD cell are reference cells explicitly configured through RRC signaling, or other cells in the same band, or a primary cell, or schedule the The path loss reference and timing reference of the cell of the virtual cell; the UE performs separate activation and deactivation on the virtual cell by using the received MAC CE.
  • the UE does not detect the PDCCH of the current cell in the downlink subframe position of the cell, does not accept the downlink scheduling (does not receive the PDSCH of the local cell); if the downlink scheduling signaling is received, the UE actively ignores; the UE in the downlink of the cell The frame position is not measured; the UE does not perform radio link monitoring at the downlink subframe position of the cell.
  • the base station notifies the UE to aggregate one or more virtual TDD cells by using RRC signaling;
  • the base station includes, in the RRC signaling, an uplink configuration parameter of the virtual cell, a center frequency of the uplink carrier, a bandwidth, a maximum allowed uplink transmit power, an uplink CP length, a power control related parameter, an antenna related parameter, and a PUSCH/ SRS transmission related parameters, etc.;
  • the base station includes, in RRC signaling, a cross-carrier scheduling parameter of the virtual cell, such as a cell index of another cell that schedules the virtual cell;
  • the base station includes a downlink configuration parameter of the virtual cell in the RRC signaling, Such as a cell index, a cell identifier (frequency point and PCI), etc.;
  • the base station includes common configuration parameters of the virtual cell in the RRC signaling, such as a TDD configuration (including a subframe configuration and a special subframe configuration), an MBSFN subframe configuration, and the like;
  • the path loss reference and the timing reference of the virtual cell may be a reference cell explicitly configured by the RRC signaling, or another cell
  • the network does not configure A1/A2/A6 measurement events for the cell.
  • the other is also applicable to the unidirectional (only uplink) virtual FDD cell, only the uplink secondary cell (including TDD and FDD), the extended carrier, the carrier segment, and the separate Uplink FDD carrier.
  • the technical solution provided by the embodiment of the present invention provides a solution for working on a TDD cell where only the actual physical resources exist on the uplink and the downlink is virtual, which improves the efficiency of using TDD frequency, reduces the system cost, and enables the terminal to Working on the community.
  • embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware.
  • the present invention is in the form of a computer program product embodied on one or more computer-usable storage interfaces (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer usable program code.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé et un dispositif permettant de traiter une ressource de spectre. Le procédé comprend les étapes suivantes : confirmation par une station de base d'une ressource de spectre devant être traitée, la ressource de spectre étant destinée à être utilisée dans une transmission de données en liaison montante, et une ressource de spectre de liaison descendante étant destinée à être utilisée dans une transmission de données en liaison descendante et n'ayant pas de corrélation liaison montante/liaison descendante avec la ressource de spectre, ou la ressource de spectre étant destinée à être utilisée dans une transmission de données en liaison descendante et une ressource de liaison montante étant destinée à être utilisée dans une transmission de données en liaison montante et n'ayant pas de corrélation liaison montante/liaison descendante avec la ressource de spectre ; lorsqu'une utilisation du spectre est confirmée par la station de base, notification à un équipement utilisateur d'utiliser une technologie d'agrégation de porteuses en agrégeant la ressource de spectre. La ressource de spectre est agrégée par l'équipement utilisateur sur la base de la notification d'utiliser la technologie d'agrégation de porteuses. Dans la présente invention, comme l'équipement utilisateur peut fonctionner dans une cellule sans bande passante protégée, l'efficacité d'utilisation du spectre en duplexage par répartition dans le temps est augmentée et les coûts système sont réduits.
PCT/CN2011/083452 2010-12-14 2011-12-05 Procédé et dispositif permettant de traiter une ressource de spectre Ceased WO2012079476A1 (fr)

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