WO2012167639A1 - Procédé et dispositif de configuration de format de canal de commande de liaison descendante - Google Patents

Procédé et dispositif de configuration de format de canal de commande de liaison descendante Download PDF

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Publication number
WO2012167639A1
WO2012167639A1 PCT/CN2012/072246 CN2012072246W WO2012167639A1 WO 2012167639 A1 WO2012167639 A1 WO 2012167639A1 CN 2012072246 W CN2012072246 W CN 2012072246W WO 2012167639 A1 WO2012167639 A1 WO 2012167639A1
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WIPO (PCT)
Prior art keywords
downlink control
control channel
mobile terminal
network side
channel format
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PCT/CN2012/072246
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English (en)
Chinese (zh)
Inventor
袁明
毕峰
梁枫
杨瑾
吴栓栓
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中兴通讯股份有限公司
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Publication of WO2012167639A1 publication Critical patent/WO2012167639A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0006—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission format
    • 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
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals

Definitions

  • the present invention relates to the field of communications, and in particular to a method and an apparatus for configuring a downlink control channel format.
  • LTE Long Term Evolution
  • LTE-A LTE-Advanced
  • IMT-Advanced International Mobile Telecommunication Advanced
  • a subframe consists of two slots.
  • normal cyclic prefix Normal Cyclic Prefix, Normal CP for short
  • each slot consists of 7 OFDM symbols.
  • extending CP Extended CP
  • each The slots consist of 6 OFDM symbols.
  • the downlink control channel is used to carry scheduling configuration information (including downlink scheduling grant information (DL grant) and uplink scheduling grant information (UL grant)) and other control information (including system messages).
  • System Information referred to as SI
  • Random Access (RA) response Random Access (RA) response, paging related information
  • PDCCH is located in the first 1 or 2 or 3 of the 1st time slot of each subframe or On 4 OFDM symbols.
  • SI System Information
  • RA Random Access
  • PDCCH is located in the first 1 or 2 or 3 of the 1st time slot of each subframe or On 4 OFDM symbols.
  • the design of the PDCCH consists of several different components, each of which has its specific function. For convenience of description, several terms and conventions are described below: Resource Element (RE): The smallest time-frequency resource block occupying 1 subcarrier on 1 OFDM symbol.
  • RE Resource Element
  • REG Resource Element Group
  • CCE Control Channel Element
  • PRB Physical Resource Block
  • PRB pair One consecutive subframe in the time domain and 12 consecutive subcarriers in the frequency domain.
  • PDCCH format The PDCCH consists of one or more consecutive CCEs and can only be composed of L CCEs, where e ⁇ 1, 2, 4, 8 ⁇ , that is, only 4 types are supported in LTE/LTE-A. Fixed PDCCH format, as shown in Table 1.
  • relay technology is introduced in the wireless communication system. Therefore, relay technology is regarded as a key technology of 4G.
  • a relay node Relay Node, RN for short
  • a link between a base station (e B ) and an RN is called a backhaul link (also referred to as Un Link)
  • an RN is used.
  • the link between the user equipment (User Equipment, UE for short) in the coverage area is called the access link (also called the Uu Link), and the link between the eNB and the UE under its coverage is called the link.
  • the access link also called the Uu Link
  • the RN is equivalent to one UE; for the UE, the RN is equivalent to the eNB.
  • Relay nodes can be divided into two types, namely, in-band relay nodes and out-of-band relay nodes.
  • 1 is a schematic diagram of a system architecture after introducing an in-band relay node according to the related art. As shown in FIG. 1, for an in-band RN, Un Link and Uu Link use the same frequency band. , Un Link and Uu Link both use _;. In order to avoid the RN's own transmission and reception interference, the RN cannot simultaneously perform transmission and reception operations on the same frequency resource.
  • the RN When the RN sends downlink control information to its subordinate UE, it does not receive downlink control information from the eNB. Therefore, in downlink transmission, the RN first gives it to the first 1 or 2 OFDM symbols. The genus UE transmits downlink control information, and then performs handover from transmission to reception within a certain period of time (such as the interval gap shown in FIG. 2). After the handover is completed, the data from e B is received on the following OFDM symbol.
  • the relay physical downlink control channel (Relay Physical Downlink Control Channel, R-PDCCH for short) and the physical downlink shared channel (Physical Downlink Shared Channel, PDSCH for short) are shown in FIG. 2, that is, the eNB sends the RN to the RN.
  • the R-PDCCH is carried on a physical resource block or a physical resource block pair.
  • 3 is a schematic diagram of a system architecture after introducing an outband relay node according to the related art. As shown in FIG. 3, for an out-band RN, Un Link and Uu Link occupy completely different For two bands, Un Link uses _;, Uu Link uses / 2 . Therefore, the out-of-band RN can receive (transmit) on / 2 while transmitting (receiving) on _; without interference between each other.
  • the R-PDCCH may or may not be interleaved during transmission.
  • the inter-interleaved R-PDCCH (with cross-interleaving) means that the DL grants of all RNs in one subframe are interleaved and then carried on the available resources of the first slot; the UL grant of all RNs in one subframe Inter-interleaved and carried in the available resources of the second time slot, that is, the R-PDCCH carrying multiple RNs in one RB pair.
  • the non-interleaved R-PDCCH (without cross-interleaving) means that the eNB uses the high-layer signaling to configure the R-PDCCH for the RN semi-static configuration.
  • the DL grant of the RN is The first time slot is transmitted on the available resources, and the UL grant of the RN is transmitted on the available resources of the second time slot, that is, one PRB pair can only carry the R-PDCCH of the same RN, but cannot be used by multiple RNs. Shared.
  • R-PDCCH formats Two different R-PDCCH formats have been defined, namely, R-PDCCH formats with cross-interleaving and non-interleaved R-PDCCH formats (R-PDCCH formats without Cross-interleaving ).
  • interlaced R-PDCCH format R-PDCCH can only be composed of L CCEs, where J e ⁇ 1, 2, 4, 8 ⁇ , that is, the format directly following the PDCCH, the same as Table 1; non-interleaved R- PDCCH format: R-PDCCH can only consist of RB pairs, where ⁇ e ⁇ 1, 2, 4, 8 ⁇ .
  • MR Mobile Relay
  • the present invention provides a method and apparatus for configuring a downlink control channel format to at least solve the problem that the high-speed mobile relay in the related art affects the accurate reception of the downlink control channel.
  • a method for configuring a downlink control channel format is provided.
  • the configuration method of the downlink control channel format according to the present invention includes: the network side configures a downlink control channel format for the mobile terminal by using the high layer signaling, or the network side preconfigures the downlink control channel format for the mobile terminal, where the downlink control channel format is ⁇ 1 2, 4, 8, 16, 32 ⁇ One or more of CCE or RB pair.
  • the network side configures the downlink control channel format for the mobile terminal by using the high layer signaling.
  • the network side indicates that the mobile relay configures one or more downlink control channel formats by using N bits of high layer signaling, where N is the downlink control supported by the mobile relay. The number of channel formats, each bit of the N-bit high layer signaling is used to indicate one of the downlink control channel formats supported by the mobile relay.
  • the method further includes: the network side acquiring the decision parameter from the mobile terminal; the network side comparing the decision parameter with a preset decision threshold; Based on the comparison result, a downlink control channel format for configuring the mobile terminal is determined. Before the determining, by the network side, the downlink control channel format for configuring the mobile terminal, the method further includes: the network side and the mobile terminal pre-setting one or more downlink control channel formats corresponding to the decision threshold.
  • the combination of each of the downlink control channel formats includes one or more downlink control channel formats; the network side determines, according to the comparison result, the downlink control channel format used for configuring the mobile terminal, including: the network side according to the comparison result, Determining, by a combination of one or more downlink control channel formats, a combination of downlink control channel formats for configuring the mobile terminal; the network side instructing the mobile terminal to select a combination of the determined downlink control channel formats by using M-bit high layer signaling Configuration, where M corresponds to the number of combinations of downlink control channel formats.
  • the decision parameters include at least one of the following: moving speed, Doppler shift, channel quality, bit error rate, signal strength.
  • the network side pre-configuring the downlink control channel format for the mobile terminal includes: The network side pre-configures a fixed downlink control channel format for the mobile terminal. Before the network side pre-configures the fixed downlink control channel format for the mobile terminal, the method further includes: the network side and the mobile terminal preset a group of one or more downlink control channel formats corresponding to the decision threshold.
  • the combination of each of the downlink control channel formats includes one or more downlink control channel formats, and the combination of each downlink control channel format corresponds to a network-side and mobile terminal pre-configured value; the network side is pre-configured for the mobile terminal.
  • the fixed downlink control channel format includes: the network side determines a combination of the corresponding downlink control channel format according to the determined downlink control channel format; and the network side configures, by using a default value, the mobile terminal to select a combination of the determined downlink control channel formats.
  • the combination of the network side and the mobile terminal pre-setting the one or more downlink control channel formats corresponding to the decision threshold includes: determining that the multiple decision thresholds are formed Multiple interval ranges; respectively, a combination of downlink control channel formats corresponding to a plurality of interval ranges.
  • the network side includes one of the following: e B, RN, Gateway (GateWay, GW for short), Mobile Management Entity (MME), Evolved Universal Telecommunication Radio Access Network (Evolved Universal Telecommunication Radio Access Network, Referred to as EUTRAN, Operation Administration and Maintenance (OAM) manager.
  • the mobile terminal includes one of the following: Mobile relay, a higher version of the user equipment.
  • the configuration apparatus of the downlink control channel format includes: a first configuration module, configured to configure a downlink control channel format for the mobile terminal by using high layer signaling, where the downlink control channel format is ⁇ 1, 2, 4, 8, 16, 32 ⁇ One or more of CCE or RB pair;
  • the second configuration module is configured to pre-configure a downlink control channel format for the mobile terminal.
  • FIG. 1 is a schematic diagram of a system architecture after an in-band relay node is introduced according to the related art
  • FIG. 2 is a schematic diagram of a frame structure of a downlink Un subframe according to an in-band relay node according to the related art
  • 3 is a schematic diagram of a system architecture after introducing an outband relay node according to the related art
  • FIG. 1 is a schematic diagram of a system architecture after an in-band relay node is introduced according to the related art
  • FIG. 2 is a schematic diagram of a frame structure of a downlink Un subframe according to an in-band relay node according to the related art
  • 3 is a schematic diagram of a system architecture after introducing an outband relay node according to the related art
  • FIG. 1 is a schematic diagram of a system architecture after an in-band relay node is introduced according to the related art
  • FIG. 2 is a schematic diagram of a frame structure of a downlink Un subframe according to an in-band relay node according to the related art
  • FIG. 4 is a structural block diagram of a device for configuring a downlink control channel format according to an embodiment of the present invention.
  • DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict. The invention will be described in detail below with reference to the drawings in conjunction with the embodiments.
  • the embodiment of the invention provides a method for configuring a downlink control channel format.
  • the method includes: configuring, by the network side, a downlink control channel format for the mobile terminal by using high layer signaling, or preconfiguring a downlink control channel format for the mobile terminal by the network side, where the downlink control channel format is ⁇ 1, 2, 4, 8, 16, 32 ⁇ One or more of a CCE or RB pair.
  • the downlink control channel format is ⁇ 1, 2, 4, 8, 16, 32 ⁇ One or more of a CCE or RB pair.
  • the extended downlink control channel format is ⁇ 1, 2, 4, 8, 16, 32 ⁇ and the downlink control channel format is configured to be suitable for mobile relay (or a later version of the terminal),
  • the mobile relay receives the accuracy of the downlink control information on the Unlink, reduces the bit error rate of the data transmission, and improves the transmission efficiency of the entire communication system.
  • the foregoing configuration method of the downlink control channel format can be applied not only to mobile relay but also to other terminals, such as some higher-level terminals.
  • the downlink control channel of the mobile relay supports six formats, that is, in the case of interleaving, the downlink control channel of the mobile relay can be ⁇ 1, 2, 4, 8, 16, 32 ⁇ CCEs.
  • the downlink control channel of the mobile relay may be composed of ⁇ 1, 2, 4, 8, 16, 32 ⁇ RB pairs.
  • the network side configures the downlink control channel format for the mobile terminal by using the high layer signaling, where the network side indicates that the mobile relay configures one or more downlink control channel formats by using N bits of high layer signaling, where N is mobile relay support.
  • the number of downlink control channel formats, each bit of the N-bit high layer signaling is used to indicate one of the downlink control channel formats supported by the mobile relay.
  • the downlink control channel format can be indicated by using 6-bit high-layer signaling (ie, bitmap mode). .
  • 111100 can be used to represent the downlink control channel format as ⁇ 1, 2, 4, 8 ⁇ , and 001111 can be used to represent the downlink control channel format as ⁇ 4, 8, 16, 32 ⁇ , and 001100 can be used to represent the downlink control channel format as ⁇ 4, 8 ⁇ , can use 000110 to represent the downlink control channel format as ⁇ 8, 16 ⁇ . Therefore, the method of the preferred embodiment is very simple and can ensure the reliability of downlink control channel transmission.
  • the method further includes: the network side acquiring the decision parameter from the mobile terminal; and the network side comparing the decision parameter with the preset decision threshold.
  • the network side determines the downlink control channel format used to configure the mobile terminal according to the comparison result.
  • the method further includes: the network side and the mobile terminal preset one or more downlinks corresponding to the decision threshold.
  • a combination of control channel formats where the combination of each downlink control channel format includes one or more downlink control channel formats; and the network side determines, according to the comparison result, a downlink control channel format for configuring the mobile terminal, including: Determining, in a combination of the corresponding one or more downlink control channel formats, a combination of downlink control channel formats for configuring the mobile terminal; the network side instructing the mobile terminal to select the determined downlink control channel format by using M-bit high layer signaling
  • M corresponds to the number of combinations of downlink control channel formats.
  • the preferred embodiment can reduce the number of bits of higher layer signaling by means of a combination of downlink control channel formats.
  • the base station only needs to indicate mobile relay through 3-bit high-level signaling.
  • the downlink control channel format in the combination of the corresponding downlink control channel formats is selected for configuration, thereby reducing the number of bits of higher layer signaling. It should be noted that the value of M is preferably rounded up to 1 ⁇ ), where L is the number of combinations of downlink control channel formats (8 in the preferred embodiment).
  • the downlink control signaling format may be configured when the decision parameter is greater than a preset threshold.
  • the combination is in the eight combinations of ⁇ 4, 8, 16, 32 ⁇ , ⁇ 4, 8 ⁇ , ⁇ 8, 16 ⁇ , ⁇ 16, 32 ⁇ , ⁇ 4 ⁇ , ⁇ 8 ⁇ , ⁇ 16 ⁇ , ⁇ 32 ⁇
  • One type which one can be specifically indicated by the base station high layer signaling or by the mobile relay default.
  • the downlink control signaling format may be configured when the decision parameter is smaller than a preset threshold.
  • the combination is in the combination of ⁇ 1, 2, 4, 8 ⁇ , ⁇ 1, 2 ⁇ , ⁇ 2, 4 ⁇ , ⁇ 4, 8 ⁇ , ⁇ 1 ⁇ , ⁇ 2 ⁇ , ⁇ 4 ⁇ , ⁇ 8 ⁇
  • One type which one can be specifically indicated by the base station high layer signaling or by the mobile relay default.
  • the decision parameter comprises at least one of the following: a moving speed, a Doppler shift, a channel quality, a bit error rate, and a signal strength.
  • the network side pre-configuring the downlink control channel format for the mobile terminal comprises: the network side pre-configuring a fixed downlink control channel format for the mobile terminal.
  • the method further includes: the network side and the mobile terminal pre-setting one or more downlink control channel formats corresponding to the decision threshold.
  • each combination of downlink control channel formats includes one or more downlink control channel formats
  • each combination of downlink control channel formats corresponds to a network side and a mobile terminal preconfigured value
  • the network side is preconfigured for the mobile terminal
  • the fixed downlink control channel format includes: the network side determines a combination of the corresponding downlink control channel format according to the determined downlink control channel format; and the network side configures, by using a default value, the mobile terminal to select a combination of the determined downlink control channel formats.
  • the combination of the network side and the mobile terminal presetting the one or more downlink control channel formats corresponding to the decision threshold includes: determining the multiple decision gates A plurality of interval ranges formed by the limit values; and combinations of downlink control channel formats corresponding to the plurality of interval ranges are respectively arranged.
  • the network side comprises one of the following: e B, RN, GW, MME, EUTRAN OAM manager.
  • the mobile terminal comprises one of the following: a mobile relay, a higher version of the user equipment.
  • the method of the present invention can be well applied to mobile relay (a later version of the terminal), improves the transmission reliability of the downlink control channel of the mobile relay in a high-speed mobile scenario, and improves the mobility.
  • the accuracy of the relay receiving the downlink control information on the Unlink reduces the bit error rate of the data transmission, thereby improving the transmission efficiency of the entire communication system.
  • Preferred Embodiment 1 This preferred embodiment 1 describes a process of configuring a supported downlink control channel format for a mobile relay using higher layer signaling.
  • the downlink control channel of the mobile relay supports six formats, that is, in the case of interleaving, the downlink control channel of the mobile relay can be composed of ⁇ 1, 2, 4, 8, 16, 32 ⁇ CCEs; In this case, the downlink control channel of the mobile relay may be composed of ⁇ 1, 2, 4, 8, 16, 32 ⁇ RB pairs.
  • the downlink control channel format supported by the mobile relay is configured by the base station by using high layer signaling.
  • the high-level signaling adopts the bitmap method, that is, 6 bits are required, and specifically, the format corresponding to "1" is configured; The format is not configured.
  • 111100 represents a supportable downlink control channel format of ⁇ 1, 2, 4, 8 ⁇ CCEs or RB pairs.
  • 001111 represents a supportable downlink control channel format of ⁇ 4, 8, 16, 32 ⁇ CCE or RB pair.
  • 001100 represents a supportable downlink control channel format of ⁇ 4, 8 ⁇ CCEs or RB pairs.
  • 000110 represents a supportable downlink control channel format of ⁇ 8, 16 ⁇ CCE or RBpair.
  • This preferred embodiment 2 describes a process of configuring a supportable downlink control channel format for a mobile relay by using higher layer signaling when the speed of the mobile relay exceeds the decision threshold.
  • the downlink control channel of the mobile relay is composed of L CCEs.
  • the base station uses the high layer signaling to configure any one of the following four supported downlink control channel formats (corresponding to Table 2 to Table 5) for the mobile relay.
  • the base station uses any one of Tables 2 to 5 for the mobile relay configuration by using 2-bit high layer signaling. For example, “00” corresponds to Table 2; “01” corresponds to Table 3; “10” corresponds to Table 4; “11” corresponds to Table 5; Table 2 Supports Downstream Control Channel Format (Je ⁇ 4,8,16,32 ⁇ )
  • the downlink control channel of the mobile relay consists of one RB pair.
  • the base station uses the high-layer signaling to configure any of the following four supported downlink control channel formats (corresponding to Table 6 to Table 9) for the mobile relay.
  • the base station uses any one of Tables 6 to 9 for mobile relay configuration using 2-bit high layer signaling. For example, "00" corresponds to Table 6; "01” corresponds to Table 7; "10” corresponds to Table 8; "11” corresponds to Table 9; Table 6 Supports Downstream Control Channel Format (Ae ⁇ 4, 8, 16, 32 ⁇ )
  • the preferred embodiment 3 describes a process of configuring a supportable downlink control channel format for a mobile relay by using higher layer signaling when the channel quality of the mobile relay is less than the decision threshold.
  • the channel quality of the mobile relay is less than or equal to the threshold, the inband/outband and downlink control channels are interleaved.
  • the base station can configure J or ⁇ e ⁇ l, 2, 4, 8 ⁇ or J or ⁇ e ⁇ 1, 2 ⁇ or J or ⁇ e ⁇ 2, 4 ⁇ or J or ⁇ e ⁇ 4, 8 ⁇ or J or ⁇ e ⁇ 1 ⁇ or J or ⁇ e ⁇ 2 ⁇ or J or ⁇ e ⁇ 4 ⁇ or one or more of J or ⁇ 8 ⁇ . Similar to the preferred embodiment 2, the base station configures any one of the above eight supported downlink control channel formats for the mobile relay by using high layer signaling.
  • the base station uses 3-bit high-level signaling "000" for mobile relay configuration or Ae ⁇ 1, 2, 4, 8 ⁇ ; "001" configuration uses J or Ae ⁇ 1, 2 ⁇ ; "010” configuration J or Ae ⁇ 2, 4 ⁇ ; "011” configuration uses J or Ae ⁇ 4, 8 ⁇ ; "100” configuration uses J or Ae ⁇ 1 ⁇ ; "101” configuration uses J or Ae ⁇ 2 ⁇ ; "110” Configure to use J or Ae ⁇ 4 ⁇ ; "111” configuration uses J or Ae ⁇ 8 ⁇ .
  • Preferred Embodiment 4 This preferred embodiment 3 describes a procedure for configuring a supportable downlink control channel format for a mobile relay by default in a manner in which the mobile relay moves faster than the decision threshold.
  • the base station and the mobile relay negotiate with each other.
  • the base station and the mobile relay can support the downlink control channel format by default as J or Ae ⁇ 4, 8,16,32 ⁇ or J or Ae ⁇ 4, 8 ⁇ or J or Ae ⁇ 8, 16 ⁇ or J or Ae ⁇ 16,32 ⁇ or G or ⁇ G ⁇ 8 ⁇ or ⁇ 16 ⁇
  • the downlink control channel format supported by the base station and the mobile relay is J or ⁇ 1, 2, 4, 8 ⁇ or
  • Preferred Embodiment 5 This preferred embodiment 5 describes a procedure for configuring a supportable downlink control channel format for a mobile relay using higher layer signaling in the case of a signal strength of a mobile relay and a plurality of decision thresholds.
  • the base station pre-sets the threshold values of the four signal strengths, which are as follows: WI
  • the above four thresholds are divided into five types of interval ranges, and each range includes a plurality of supportable downlink control signaling formats.
  • the supported downlink control format when the signal strength is less than or equal to, is either eight £ ⁇ 8,16 ⁇ or J or ⁇ 16,32 ⁇ ; when the signal strength is greater than /, less than or equal to / 2 , the supported downlink control The format is J or Ae ⁇ 4,8 ⁇ or J or Ae ⁇ 8,16 ⁇ ; when the signal strength is greater than / 2 and less than or equal to / 3 , the supported downlink control format is J or Ae ⁇ 2, 4 ⁇ or J or Ae ⁇ 4,8 ⁇ ; when the signal strength is greater than / 3 less than or equal to / 4 , the supported downlink control format is J or ⁇ 1, 2 ⁇ or J or ⁇ 2, 4 ⁇ ; when the signal strength is greater than / 4 , The supported downlink control format is J or ⁇ 1, 2 ⁇ or 7 ⁇ ⁇ 1 ⁇ .
  • the base station further uses the one-bit high-level signaling to configure which supported downlink control signaling format is specifically used for the mobile relay. For example, when the signal strength is greater than / 2 and less than or equal to / 3 , 1-bit high-level signaling: "0" stands for J or Ae ⁇ 2, 4 ⁇ ; "1” stands for J or Ae ⁇ 4, 8 ⁇ .
  • Preferred Embodiment 6 This preferred embodiment 6 describes a procedure for configuring a supportable downlink control channel format for a mobile relay in a default manner in the case of a Doppler shift of a mobile relay and a plurality of decision thresholds.
  • the base station presets three Doppler shift thresholds, from small to large: ⁇ / 2 ⁇ / 3 .
  • the above three thresholds are divided into four types of interval ranges, and each of the interval ranges corresponds to only one supported downlink control signaling format by default.
  • the downlink control format supported by the base station and the mobile relay by default is J or Ae ⁇ l, 2 ⁇ ; when the Doppler shift of the mobile relay is greater than When less than or equal to / 2 , the base station and mobile relay can support the downlink control format by default or ⁇ 2, 4 ⁇ ; when the Doppler shift of the mobile relay is greater than / 2 is less than or equal to / 3 , the base station and the mobile
  • the default control format that can be supported by default is
  • Preferred Embodiment 7 This preferred embodiment 7 describes a procedure in which a base station does not perform a decision operation and configures a unique supportable downlink control channel format.
  • the downlink control channel can only consist of L CCEs, and Je ⁇ l, 2, 4, 8 ⁇ or Je ⁇ l, 2 ⁇ or Je ⁇ 2,4 ⁇ or Je ⁇ 4,8 ⁇ or Je ⁇ 4,8,16,32 ⁇ or Je ⁇ 4,8 ⁇ or Je ⁇ 8,16 ⁇ or Je ⁇ 16,32 ⁇ , and stable.
  • the downlink control channel can only consist of one RB pair, and Ae ⁇ 1, 2, 4, 8 ⁇ or Ae ⁇ 1, 2 ⁇ or Ae ⁇ 2,4 ⁇ or Ae ⁇ 4,8 ⁇ or
  • the embodiment of the invention provides a device for configuring a downlink control channel format, and the device for configuring the downlink control channel format can be used to implement the configuration method of the downlink control channel format.
  • the first configuration module 42 is configured to configure, by using high layer signaling, a downlink control channel format for the mobile terminal, where the downlink control channel format is one of ⁇ 1, 2, 4, 8, 16, 32 ⁇ CCEs or RB pairs One or more components; a second configuration module 44, configured to pre-configure a downlink control channel format for the mobile terminal.
  • the configuration device of the downlink control channel format described in the device embodiment corresponds to the foregoing method embodiment, and the specific implementation process has been described in detail in the method embodiment, and details are not described herein again.
  • the extended downlink control channel format is ⁇ 1, 2, 4, 8, 16, 32 ⁇ .
  • the configuration of the downlink control channel format can be well applied to mobile relay (or a later version of the terminal), and the mobile relay is improved.
  • the accuracy of receiving downlink control information on the Unlink reduces the bit error rate of data transmission, thereby improving the transmission efficiency of the entire communication system.

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Abstract

L'invention porte sur un procédé et un dispositif de configuration du format d'un canal de commande de liaison descendante. Le procédé comprend les opérations suivantes : le côté réseau configure le format d'un canal de commande de liaison descendante pour un terminal mobile au moyen d'une signalisation de couche haute, ou le côté réseau préconfigure le format du canal de commande de liaison descendante pour le terminal mobile, le format du canal de commande de liaison descendante étant constitué d'un ou plusieurs éléments parmi {1, 2, 4, 8, 16, 32} CCE ou paires de RB. Au moyen de la présente invention, une extension du format du canal de commande de liaison descendante sous la forme {1, 2, 4, 8, 16, 32} et sa configuration peuvent être bien appliquées à un relais mobile (ou un terminal ayant une plus haute version), ce qui augmente la précision de réception d'informations de canal de liaison descendante sur liaison Un par le relais mobile, réduit le taux d'erreur de code de la transmission de données, et améliore de ce fait l'efficacité de transmission du système de communication entier.
PCT/CN2012/072246 2011-06-10 2012-03-13 Procédé et dispositif de configuration de format de canal de commande de liaison descendante WO2012167639A1 (fr)

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Application Number Priority Date Filing Date Title
CN2011101560967A CN102821421A (zh) 2011-06-10 2011-06-10 下行控制信道格式的配置方法及装置
CN201110156096.7 2011-06-10

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WO2012167639A1 true WO2012167639A1 (fr) 2012-12-13

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