US20200296725A1 - Bandwidth part configuration method, network device, and terminal - Google Patents

Bandwidth part configuration method, network device, and terminal Download PDF

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Publication number
US20200296725A1
US20200296725A1 US16/698,888 US201916698888A US2020296725A1 US 20200296725 A1 US20200296725 A1 US 20200296725A1 US 201916698888 A US201916698888 A US 201916698888A US 2020296725 A1 US2020296725 A1 US 2020296725A1
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Prior art keywords
frequency
domain
configuration
bandwidth
part configured
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US16/698,888
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English (en)
Inventor
Hai Tang
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Assigned to GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD. reassignment GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: TANG, HAI
Priority to US17/021,772 priority Critical patent/US11259305B2/en
Publication of US20200296725A1 publication Critical patent/US20200296725A1/en
Priority to US17/585,843 priority patent/US20220150897A1/en
Abandoned legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H04L27/26025—Numerology, i.e. varying one or more of symbol duration, subcarrier spacing, Fourier transform size, sampling rate or down-clocking
    • 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), DMT
    • 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
    • H04L5/0028—Variable division
    • 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
    • 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
    • H04L5/0058—Allocation criteria
    • H04L5/0064—Rate requirement of the data, e.g. scalable bandwidth, data priority
    • 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]
    • H04W28/18—Negotiating wireless communication parameters
    • H04W28/20—Negotiating bandwidth
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/02—Selection of wireless resources by user or terminal
    • H04W72/042—
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

Definitions

  • NR New Radio
  • 5G 5th-Generation
  • the disclosure relates to radio access technologies, and more particularly to a bandwidth part configuration method, a network device and a terminal.
  • Multiple aspects of the disclosure provide a bandwidth part configuration method, a network device and a terminal, to ensure a relatively low control signaling overhead.
  • Configuration information is obtained, the configuration information being used to configure at least one frequency-domain bandwidth configuration, a size and/or position of a bandwidth part configured by each of the at least one frequency-domain bandwidth configuration being defined by adopting the same frequency-domain unit as a unit, the frequency-domain unit including N Resource Blocks (RBs) and N being an integer more than or equal to 1.
  • RBs Resource Blocks
  • the configuration information is sent.
  • Another aspect of the disclosure provides another bandwidth part configuration method, which may include the following operations.
  • Configuration information is received, the configuration information being used to configure at least one frequency-domain bandwidth configuration, a size and/or position of a bandwidth part configured by each of the at least one frequency-domain bandwidth configuration being defined by adopting the same frequency-domain unit as a unit, the frequency-domain unit including N RBs and N being an integer more than or equal to 1.
  • the at least one frequency-domain bandwidth configuration is determined according to the configuration information.
  • a network device which may include an obtaining unit and a sending unit.
  • the obtaining unit may be configured to obtain configuration information, the configuration information being used to configure at least one frequency-domain bandwidth configuration, a size and/or position of a bandwidth part configured by each of the at least one frequency-domain bandwidth configuration being defined by adopting the same frequency-domain unit as a unit, the frequency-domain unit including N RBs and N being an integer more than or equal to 1.
  • the sending unit may be configured to send the configuration information.
  • a terminal which may include a receiving unit and a determination unit.
  • the receiving unit may be configured to receive configuration information, the configuration information being used to configure at least one frequency-domain bandwidth configuration, a size and/or position of a bandwidth part configured by each of the at least one frequency-domain bandwidth configuration being defined by adopting the same frequency-domain unit as a unit, the frequency-domain unit including N RBs and N being an integer more than or equal to 1.
  • the determination unit may be configured to determine the at least one frequency-domain bandwidth configuration according to the configuration information.
  • the configuration information is obtained, the configuration information being used to configure the at least one frequency-domain bandwidth configuration, the size and/or position of the bandwidth part configured by each of the at least one frequency-domain bandwidth configuration being defined by adopting the same frequency-domain unit as the unit, the frequency-domain unit including the N RBs and N being an integer more than or equal to 1, and the configuration information is further sent.
  • the size and/or position of the bandwidth part configured by each frequency-domain bandwidth configuration are/is defined by adopting the same frequency-domain unit as the unit, which, compared with configuration of bandwidth parts by adopting different resource granularities, may unify control signaling structures, thereby effectively ensuring a relatively low control signaling overhead and reducing device complexity.
  • the configuration information is received, the configuration information being used to configure the at least one frequency-domain bandwidth configuration, the size and/or position of the bandwidth part configured by each of the at least one frequency-domain bandwidth configuration being defined by adopting the same frequency-domain unit as the unit, the frequency-domain unit including the N RBs and N being an integer more than or equal to 1, and the at least one frequency-domain bandwidth configuration is further determined according to the configuration information.
  • the size and/or position of the bandwidth part configured by each frequency-domain bandwidth configuration are/is defined by adopting the same frequency-domain unit as the unit, which, compared with configuration of bandwidth parts by adopting different resource granularities, may unify control signaling structures, thereby effectively ensuring a relatively low control signaling overhead and reducing device complexity.
  • the size and/or position of the bandwidth part configured by each frequency-domain bandwidth configuration are/is defined by adopting the same frequency-domain unit as the unit, which, compared with configuration of bandwidth parts by adopting different resource granularities, may unify control signaling structures, thereby reducing processing complexity of a terminal.
  • a maximum subcarrier spacing in subcarrier spacings of the bandwidth parts configured by each frequency-domain bandwidth configuration is adopted as a subcarrier spacing of the RB, which, compared with adoption of a relatively small subcarrier spacing as the subcarrier spacing of the RB, may effectively reduce a bit number for configuration of the bandwidth parts and reduce the control signaling overhead.
  • FIG. 1A is a flowchart of a bandwidth part configuration method according to an embodiment of the disclosure.
  • FIG. 1B is a distribution schematic diagram of a frequency-domain bandwidth configuration according to the embodiment corresponding to FIG. 1A .
  • FIG. 1C is a distribution schematic diagram of another frequency-domain bandwidth configuration according to the embodiment corresponding to FIG. 1A .
  • FIG. 1D is a distribution schematic diagram of another frequency-domain bandwidth configuration according to the embodiment corresponding to FIG. 1A .
  • FIG. 1E is a distribution schematic diagram of another frequency-domain bandwidth configuration according to the embodiment corresponding to FIG. 1A .
  • FIG. 2 is a flowchart of another bandwidth part configuration method according to another embodiment of the disclosure.
  • FIG. 3 is a structure diagram of a network device according to another embodiment of the disclosure.
  • FIG. 4 is a structure diagram of a terminal according to another embodiment of the disclosure.
  • a downlink multiple access manner is usually an Orthogonal Frequency Division Multiple Access (OFDMA) manner.
  • a downlink resource of a system is divided into Orthogonal Frequency Division Multiple (OFDM) symbols from time, and is divided into subcarriers from frequency.
  • OFDM Orthogonal Frequency Division Multiple
  • a normal downlink subframe includes two slots, each slot includes 7 or 6 OFDM symbols, and a normal downlink subframe includes totally 14 OFDM symbols or 12 OFDM symbols.
  • the Long Term Evolution (LTE) Release 8/9/10 standard further defines a size of an RB.
  • An RB includes 12 subcarriers on a frequency domain, and is a half subframe duration (i.e., a slot) on a time domain, namely including 7 or 6 OFDM symbols.
  • Resource Element (RE) is a minimum resource unit in physical resources.
  • control channels data born in a control channel
  • service data data born in a service channel
  • a fundamental objective of sending a subframe is to transmit service data, and a function of a control channel is to assist in transmission of the service data.
  • RE When control data is transmitted, RE is a minimum transmission unit. However, an RE is too small. Therefore, Resource Element Group (REG) or Control Channel Element (CCE) is used as a transmission unit in many cases.
  • REG Resource Element Group
  • CCE Control Channel Element
  • term “and/or” in the disclosure is only an association relationship describing associated objects and represents that three relationships may exist.
  • a and/or B may represent three conditions: i.e., independent existence of A, existence of both A and B and independent existence of B.
  • character “/” in the disclosure usually represents that previous and next associated objects form an “or” relationship.
  • FIG. 1A is a flowchart of a bandwidth part configuration method according to an embodiment of the disclosure, as shown in FIG. 1A .
  • configuration information is obtained, the configuration information being used to configure at least one frequency-domain bandwidth configuration, a size and/or position of a bandwidth part configured by each of the at least one frequency-domain bandwidth configuration being defined by adopting the same frequency-domain unit D as a unit, the frequency-domain unit D including N RBs and N being an integer more than or equal to 1.
  • the configuration information is sent.
  • an execution body of 101 ⁇ 102 may be a network device.
  • the bandwidth part configured by each frequency-domain bandwidth configuration has the same subcarrier spacing or different subcarrier spacings. There are no particular limits made thereto in the embodiment.
  • a subcarrier spacing of the RB may be any subcarrier spacing in the subcarrier spacings of the bandwidth part configured by each frequency-domain bandwidth configuration.
  • the subcarrier spacing of the RB is a maximum subcarrier spacing in the subcarrier spacings of the bandwidth part configured by each frequency-domain bandwidth configuration.
  • the maximum subcarrier spacing in the subcarrier spacings of the bandwidth parts configured by each frequency-domain bandwidth configuration is adopted as the subcarrier spacing of the RB, which, compared with adoption of a relatively small subcarrier spacing as the subcarrier spacing of the RB, may effectively reduce a bit number for configuration of the bandwidth parts and reduce a control signaling overhead.
  • the size of the bandwidth part configured by each frequency-domain bandwidth configuration may be the number of frequency-domain units D in the bandwidth part configured by the frequency-domain bandwidth configuration.
  • the position of the bandwidth part configured by each frequency-domain bandwidth configuration is a relative offset of the bandwidth part configured by the frequency-domain bandwidth configuration relative to a synchronization signal or a cell carrier, the relative offset being defined by adopting the frequency-domain unit.
  • the position of the bandwidth part may be configured by adopting the offset relative to the synchronization signal, and a terminal may obtain information about a position of a bandwidth part 1 without learning a system bandwidth, so that a control signaling overhead in notifying the terminal of the system bandwidth by the network device may be effectively reduced, and bandwidth part configuration flexibility is improved.
  • the terminal is not required to search a position of the system bandwidth, so that a requirement on processing complexity of the terminal is also reduced, and reduction in cost and power consumption of the terminal is facilitated.
  • the relative offset may be an offset of a center frequency point, frequency-domain high end or frequency-domain low end of the bandwidth part configured by each frequency-domain bandwidth configuration relative to a center frequency point, frequency-domain high end or frequency-domain low end of the synchronization signal,
  • the relative offset may be an offset of the center frequency point, frequency-domain high end or frequency-domain low end of the bandwidth part configured by each frequency-domain bandwidth configuration relative to a center frequency point, frequency-domain high end or frequency-domain low end of the cell carrier,
  • the configuration information obtained in 101 may further include at least one of:
  • the information about the subcarrier spacings of the bandwidth part configured by each frequency-domain bandwidth configuration may be information of serial numbers of the subcarrier spacings of the bandwidth part configured by each frequency-domain bandwidth configuration, or may also be information of a serial number of a parameter set of the bandwidth part configured by each frequency-domain bandwidth configuration, the parameter set of the bandwidth part configured by each frequency-domain bandwidth configuration at least including a subcarrier spacing and cyclic prefix of the bandwidth part configured by each frequency-domain bandwidth configuration, for example, a parameter set 1 (subcarrier spacing 1 , cyclic prefix 1 ) and a parameter set 2 (subcarrier spacing 2 , cyclic prefix 2 ).
  • a parameter set 1 subcarrier spacing 1 , cyclic prefix 1
  • a parameter set 2 subcarrier spacing 2 , cyclic prefix 2
  • the configuration information may specifically be sent through high-layer signaling or a system broadcast message.
  • the network device may specifically send the configuration information to the terminal through the high-layer signaling or the system broadcast message.
  • the high-layer signaling may be a Radio Resource Control (RRC) message, and the configuration information may specifically be contained through an Information Element (IE) in the RRC message.
  • RRC Radio Resource Control
  • IE Information Element
  • the RRC message may be an RRC message in the conventional art, for example, an RRC connection reconfiguration message, and there are no limits made thereto in the embodiment.
  • An IE of an existing RRC message is extended to contain the configuration information.
  • the RRC message may also be different from the existing RRC message in the conventional art.
  • the high-layer signaling may be a Media Access Control (MAC) Control Element (CE) message, and a new MAC CE message may also specifically be added to contain the configuration information.
  • MAC Media Access Control
  • CE Control Element
  • the configuration information may specifically be contained by a spare bit in an existing Master Information Block (MIB) or System Information Block (SIB) in the system broadcast message, and a new SIB may also be added to contain the configuration information.
  • MIB Master Information Block
  • SIB System Information Block
  • first indication information may further be sent, the first indication information including information of a serial number indicating one frequency-domain bandwidth configuration in the at least one frequency-domain bandwidth configuration. Therefore, the specific frequency-domain bandwidth configuration may be indicated to the terminal.
  • the first indication information may specifically be sent through high-layer signaling or a system broadcast message or Downlink Control Information (DCI).
  • DCI Downlink Control Information
  • second indication information may further be sent, the second indication information including frequency-domain resource allocation information based on one frequency-domain bandwidth configuration in the at least one frequency-domain bandwidth configuration. Therefore, specific frequency-domain resource allocation information of the specific frequency-domain bandwidth configuration may be indicated to the terminal.
  • the second indication information may specifically be sent through high-layer signaling or a system broadcast message or DCI.
  • FIG. 1B is a distribution schematic diagram of a frequency-domain bandwidth configuration according to the embodiment corresponding to FIG. 1A .
  • the network device makes two frequency-domain bandwidth configurations for the terminal through first configuration information, each frequency-domain bandwidth configuration configuring a bandwidth part smaller than a system bandwidth for specific frequency-domain resource allocation.
  • a bandwidth part 1 is a bandwidth part adopting a 15 kHz subcarrier spacing, one RB includes 12 subcarriers, and a bandwidth is 180 kHz.
  • a bandwidth part 2 is a bandwidth part adopting a 60 kHz subcarrier spacing, one RB includes 12 subcarriers, and a bandwidth is 720 kHz.
  • the same resource granularity i.e., the frequency-domain unit D
  • the same resource granularity i.e., the frequency-domain unit D
  • may be adopted for configuration which, compared with configuration of bandwidth parts by adopting different resource granularities, may unify control signaling structures, effectively ensure a relatively low control signaling overhead and, meanwhile, reduce processing complexity of the terminal.
  • RBs corresponding to the maximum subcarrier spacing and a multiple thereof are adopted as the frequency-domain unit D, which, compared with adoption of RBs corresponding to a relatively small subcarrier spacing and a multiple thereof as the frequency-domain unit D, may reduce a bit number for configuration of the bandwidth parts and reduce the control signaling overhead.
  • FIG. 1C is a distribution schematic diagram of another frequency-domain bandwidth configuration according to the embodiment corresponding to FIG. 1A .
  • a position of the bandwidth part 1 in FIG. 1B may specifically be indicated, an offset of a frequency-domain low end of the bandwidth part 1 relative to the center frequency point of the synchronization signal is adopted to configure the position of the bandwidth part 1 , the frequency-domain unit D is adopted as a frequency-domain granularity for configuration, and the offset is 4D.
  • the terminal may obtain information about the position of the bandwidth part 1 without learning the system bandwidth, so that a control signaling overhead in notifying the terminal of the system bandwidth by the network device may be effectively reduced, and bandwidth part configuration flexibility is improved.
  • the terminal is not required to search a position of the system bandwidth, so that a requirement on processing complexity of the terminal is also reduced, and reduction in cost and power consumption of the terminal is facilitated.
  • FIG. 1D is a distribution schematic diagram of another frequency-domain bandwidth configuration according to the embodiment corresponding to FIG. 1A .
  • the position of the bandwidth part 1 in FIG. 1B may specifically be indicated, an offset of a center frequency point of the bandwidth part 1 relative to the center frequency point of the synchronization signal is adopted to configure the position of the bandwidth part 1 , the frequency-domain unit D is adopted as a frequency-domain granularity for configuration, and the offset is 2D.
  • the terminal may obtain the information about the position of the bandwidth part 1 without learning the system bandwidth, so that the control signaling overhead in notifying the terminal of the system bandwidth by the network device may be effectively reduced, and the bandwidth part configuration flexibility is improved.
  • the terminal is not required to search the position of the system bandwidth, so that a requirement on processing complexity of the terminal is also reduced, and reduction in cost and power consumption of the terminal is facilitated.
  • FIG. 1E is a distribution schematic diagram of another frequency-domain bandwidth configuration according to the embodiment corresponding to FIG. 1A .
  • the position of the bandwidth part 1 in FIG. 1B may specifically be indicated, an offset of the frequency-domain low end of the bandwidth part 1 relative to the center frequency point of the cell carrier is adopted to configure the position of the bandwidth part 1 , the frequency-domain unit D is adopted as a frequency-domain granularity for configuration, and the offset is 2D.
  • positions of bandwidth parts 1 for all terminals in a cell are configured relative to the center frequency point of the cell carrier, which, compared with the embodiment corresponding to FIG. 1D , ensures that the offset of the bandwidth part 1 is not required to be indicated relative to different synchronization signals for a terminal reading different synchronization signals and may effectively reduce processing complexity of the network device.
  • the configuration information is obtained, the configuration information being used to configure the at least one frequency-domain bandwidth configuration, the size and/or position of the bandwidth part configured by each of the at least one frequency-domain bandwidth configuration being defined by adopting the same frequency-domain unit as the unit, the frequency-domain unit including the N RBs and N being an integer more than or equal to 1, and the configuration information is further sent.
  • the size and/or position of the bandwidth part configured by each frequency-domain bandwidth configuration are/is defined by adopting the same frequency-domain unit as the unit, which, compared with configuration of bandwidth parts by adopting different resource granularities, may unify control signaling structures, thereby effectively ensuring a relatively low control signaling overhead and reducing device complexity.
  • the size and/or position of the bandwidth part configured by each frequency-domain bandwidth configuration are/is defined by adopting the same frequency-domain unit as the unit, which, compared with configuration of bandwidth parts by adopting different resource granularities, may unify control signaling structures, thereby reducing processing complexity of a terminal.
  • the maximum subcarrier spacing in the subcarrier spacings of the bandwidth parts configured by each frequency-domain bandwidth configuration is adopted as the subcarrier spacing of the RB, which, compared with adoption of a relatively small subcarrier spacing as the subcarrier spacing of the RB, may effectively reduce a bit number for configuration of the bandwidth parts and reduce the control signaling overhead.
  • the position of the bandwidth part may be configured by adopting the offset relative to the synchronization signal, and the terminal may obtain information about a position of a bandwidth part 1 without learning a system bandwidth, so that a control signaling overhead in notifying the terminal of the system bandwidth by the network device may be effectively reduced, and bandwidth part configuration flexibility is improved.
  • the terminal is not required to search the position of the system bandwidth, so that a requirement on processing complexity of the terminal is also reduced, and reduction in cost and power consumption of the terminal is facilitated.
  • FIG. 2 is a flowchart of another bandwidth part configuration method according to another embodiment of the disclosure, as shown in FIG. 2 .
  • configuration information is received, the configuration information being used to configure at least one frequency-domain bandwidth configuration, a size and/or position of a bandwidth part configured by each of the at least one frequency-domain bandwidth configuration being defined by adopting the same frequency-domain unit as a unit, the frequency-domain unit including N RBs and N being an integer more than or equal to 1.
  • the at least one frequency-domain bandwidth configuration is determined according to the configuration information.
  • an execution body of 201 ⁇ 202 may be a terminal.
  • the bandwidth part configured by each frequency-domain bandwidth configuration has the same subcarrier spacing or different subcarrier spacings. There are no particular limits made thereto in the embodiment.
  • a subcarrier spacing of the RB may be any subcarrier spacing in the subcarrier spacings of the bandwidth part configured by each frequency-domain bandwidth configuration.
  • the subcarrier spacing of the RB is a maximum subcarrier spacing in the subcarrier spacings of the bandwidth part configured by each frequency-domain bandwidth configuration.
  • the maximum subcarrier spacing in the subcarrier spacings of the bandwidth parts configured by each frequency-domain bandwidth configuration is adopted as the subcarrier spacing of the RB, which, compared with adoption of a relatively small subcarrier spacing as the subcarrier spacing of the RB, may effectively reduce a bit number for configuration of the bandwidth parts and reduce a control signaling overhead.
  • the size of the bandwidth part configured by each frequency-domain bandwidth configuration may be the number of frequency-domain units D in the bandwidth part configured by the frequency-domain bandwidth configuration.
  • the position of the bandwidth part configured by each frequency-domain bandwidth configuration is a relative offset of the bandwidth part configured by the frequency-domain bandwidth configuration relative to a synchronization signal or a cell carrier, the relative offset being defined by adopting the frequency-domain unit.
  • the position of the bandwidth part may be configured by adopting the offset relative to the synchronization signal, and the terminal may obtain information about a position of a bandwidth part 1 without learning a system bandwidth, so that a control signaling overhead in notifying the terminal of the system bandwidth by a network device may be effectively reduced, and bandwidth part configuration flexibility is improved.
  • the terminal is not required to search the position of the system bandwidth, so that a requirement on processing complexity of the terminal is also reduced, and reduction in cost and power consumption of the terminal is facilitated.
  • the relative offset may be an offset of a center frequency point, frequency-domain high end or frequency-domain low end of the bandwidth part configured by each frequency-domain bandwidth configuration relative to a center frequency point, frequency-domain high end or frequency-domain low end of the synchronization signal,
  • the relative offset may be an offset of the center frequency point, frequency-domain high end or frequency-domain low end of the bandwidth part configured by each frequency-domain bandwidth configuration relative to a center frequency point, frequency-domain high end or frequency-domain low end of the cell carrier,
  • the configuration information received in 201 may further include at least one of:
  • the information about the subcarrier spacings of the bandwidth part configured by each frequency-domain bandwidth configuration may be information of serial numbers of the subcarrier spacings of the bandwidth part configured by each frequency-domain bandwidth configuration, or may also be information of a serial number of a parameter set of the bandwidth part configured by each frequency-domain bandwidth configuration, the parameter set of the bandwidth part configured by each frequency-domain bandwidth configuration at least including a subcarrier spacing and cyclic prefix of the bandwidth part configured by each frequency-domain bandwidth configuration, for example, a parameter set 1 (subcarrier spacing 1 , cyclic prefix 1 ) and a parameter set 2 (subcarrier spacing 2 , cyclic prefix 2 ).
  • a parameter set 1 subcarrier spacing 1 , cyclic prefix 1
  • a parameter set 2 subcarrier spacing 2 , cyclic prefix 2
  • the configuration information sent through high-layer signaling or a system broadcast message may specifically be received.
  • the terminal may specifically receive the configuration information sent by the network device through the high-layer signaling or the system broadcast message.
  • the high-layer signaling may be an RRC message, and the configuration information may specifically be contained through an IE in the RRC message.
  • the RRC message may be an RRC message in the conventional art, for example, an RRC connection reconfiguration message, and there are no limits made thereto in the embodiment.
  • An IE of an existing RRC message is extended to contain the configuration information.
  • the RRC message may also be different from the existing RRC message in the conventional art.
  • the high-layer signaling may be a MAC CE message, and a new MAC CE message may also specifically be added to contain the configuration information.
  • the configuration information may specifically be contained by a spare bit in an existing MIB or SIB in the system broadcast message, and a new SIB may also be added to contain the configuration information.
  • first indication information may further be received, the first indication information including information of a serial number indicating one frequency-domain bandwidth configuration in the at least one frequency-domain bandwidth configuration. Therefore, the specific frequency-domain bandwidth configuration may be indicated to the terminal.
  • the first indication information sent through high-layer signaling or a system broadcast message or DCI may specifically be received.
  • second indication information may further be received, the second indication information including frequency-domain resource allocation information based on one frequency-domain bandwidth configuration in the at least one frequency-domain bandwidth configuration. Therefore, specific frequency-domain resource allocation information of the specific frequency-domain bandwidth configuration may be indicated to the terminal.
  • the second indication information sent through high-layer signaling or a system broadcast message or DCI may specifically be received.
  • the configuration information is received, the configuration information being used to configure the at least one frequency-domain bandwidth configuration, the size and/or position of the bandwidth part configured by each of the at least one frequency-domain bandwidth configuration being defined by adopting the same frequency-domain unit as the unit, the frequency-domain unit including the N RBs and N being an integer more than or equal to 1, and the at least one frequency-domain bandwidth configuration is further determined according to the configuration information.
  • the size and/or position of the bandwidth part configured by each frequency-domain bandwidth configuration are/is defined by adopting the same frequency-domain unit as the unit, which, compared with configuration of bandwidth parts by adopting different resource granularities, may unify control signaling structures, thereby effectively ensuring a relatively low control signaling overhead and reducing device complexity.
  • the size and/or position of the bandwidth part configured by each frequency-domain bandwidth configuration are/is defined by adopting the same frequency-domain unit as the unit, which, compared with configuration of bandwidth parts by adopting different resource granularities, may unify control signaling structures, thereby reducing processing complexity of a terminal.
  • the maximum subcarrier spacing in the subcarrier spacings of the bandwidth parts configured by each frequency-domain bandwidth configuration is adopted as the subcarrier spacing of the RB, which, compared with adoption of a relatively small subcarrier spacing as the subcarrier spacing of the RB, may effectively reduce a bit number for configuration of the bandwidth parts and reduce the control signaling overhead.
  • the position of the bandwidth part may be configured by adopting the offset relative to the synchronization signal, and the terminal may obtain information about the position of the bandwidth part 1 without learning the system bandwidth, so that a control signaling overhead in notifying the terminal of the system bandwidth by the network device may be effectively reduced, and bandwidth part configuration flexibility is improved.
  • the terminal is not required to search the position of the system bandwidth, so that a requirement on processing complexity of the terminal is also reduced, and reduction in cost and power consumption of the terminal is facilitated.
  • FIG. 3 is a structure diagram of a network device according to another embodiment of the disclosure, as shown in FIG. 3 .
  • the network device of the embodiment may include an obtaining unit 31 and a sending unit 32 .
  • the obtaining unit 31 is configured to obtain configuration information, the configuration information being used to configure at least one frequency-domain bandwidth configuration, a size and/or position of a bandwidth part configured by each of the at least one frequency-domain bandwidth configuration being defined by adopting the same frequency-domain unit as a unit, the frequency-domain unit including N RBs and N being an integer more than or equal to 1.
  • the sending unit 32 is configured to send the configuration information.
  • the bandwidth part configured by each frequency-domain bandwidth configuration has the same subcarrier spacing or different subcarrier spacings. There are no particular limits made thereto in the embodiment.
  • a subcarrier spacing of the RB may be any subcarrier spacing in the subcarrier spacings of the bandwidth part configured by each frequency-domain bandwidth configuration.
  • the subcarrier spacing of the RB is a maximum subcarrier spacing in the subcarrier spacings of the bandwidth part configured by each frequency-domain bandwidth configuration.
  • the maximum subcarrier spacing in the subcarrier spacings of the bandwidth parts configured by each frequency-domain bandwidth configuration is adopted as the subcarrier spacing of the RB, which, compared with adoption of a relatively small subcarrier spacing as the subcarrier spacing of the RB, may effectively reduce a bit number for configuration of the bandwidth parts and reduce a control signaling overhead.
  • the size of the bandwidth part configured by each frequency-domain bandwidth configuration may be the number of frequency-domain units D in the bandwidth part configured by the frequency-domain bandwidth configuration.
  • the position of the bandwidth part configured by each frequency-domain bandwidth configuration is a relative offset of the bandwidth part configured by the frequency-domain bandwidth configuration relative to a synchronization signal or a cell carrier, the relative offset being defined by adopting the frequency-domain unit.
  • the relative offset may be an offset of a center frequency point, frequency-domain high end or frequency-domain low end of the bandwidth part configured by each frequency-domain bandwidth configuration relative to a center frequency point, frequency-domain high end or frequency-domain low end of the synchronization signal,
  • the relative offset may be an offset of the center frequency point, frequency-domain high end or frequency-domain low end of the bandwidth part configured by each frequency-domain bandwidth configuration relative to a center frequency point, frequency-domain high end or frequency-domain low end of the cell carrier,
  • the configuration information obtained by the obtaining unit 21 may further include at least one of:
  • the information about the subcarrier spacings of the bandwidth part configured by each frequency-domain bandwidth configuration may be information of serial numbers of the subcarrier spacings of the bandwidth part configured by each frequency-domain bandwidth configuration, or may also be information of a serial number of a parameter set of the bandwidth part configured by each frequency-domain bandwidth configuration, the parameter set of the bandwidth part configured by each frequency-domain bandwidth configuration at least including a subcarrier spacing and cyclic prefix of the bandwidth part configured by each frequency-domain bandwidth configuration, for example, a parameter set 1 (subcarrier spacing 1 , cyclic prefix 1 ) and a parameter set 2 (subcarrier spacing 2 , cyclic prefix 2 ).
  • a parameter set 1 subcarrier spacing 1 , cyclic prefix 1
  • a parameter set 2 subcarrier spacing 2 , cyclic prefix 2
  • the sending unit 22 may specifically be configured to send the configuration information through high-layer signaling or a system broadcast message.
  • the sending unit 22 may further be configured to send first indication information, the first indication information including information of a serial number indicating one frequency-domain bandwidth configuration in the at least one frequency-domain bandwidth configuration.
  • the sending unit 22 may specifically be configured to send the first indication information through high-layer signaling or a system broadcast message or DCI.
  • the sending unit 22 may further be configured to send second indication information, the second indication information including frequency-domain resource allocation information based on one frequency-domain bandwidth configuration in the at least one frequency-domain bandwidth configuration.
  • the sending unit 22 may specifically be configured to send the second indication information through high-layer signaling or a system broadcast message or DCI.
  • FIG. 1E the method in the embodiment corresponding to FIG. 1A ⁇ FIG. 1E may be implemented by the network device provided in the embodiment. Detailed descriptions may refer to related contents in the embodiment corresponding to FIG. 1A ⁇ FIG. 1E and elaborations are omitted herein.
  • the configuration information is obtained through the obtaining unit, the configuration information being used to configure the at least one frequency-domain bandwidth configuration, the size and/or position of the bandwidth part configured by each of the at least one frequency-domain bandwidth configuration being defined by adopting the same frequency-domain unit as the unit, the frequency-domain unit including the N RBs and N being an integer more than or equal to 1, and the configuration information is further sent through the sending unit.
  • the size and/or position of the bandwidth part configured by each frequency-domain bandwidth configuration are/is defined by adopting the same frequency-domain unit as the unit, which, compared with configuration of bandwidth parts by adopting different resource granularities, may unify control signaling structures, thereby effectively ensuring a relatively low control signaling overhead and reducing device complexity.
  • the size and/or position of the bandwidth part configured by each frequency-domain bandwidth configuration are/is defined by adopting the same frequency-domain unit as the unit, which, compared with configuration of bandwidth parts by adopting different resource granularities, may unify control signaling structures, thereby reducing processing complexity of a terminal.
  • the maximum subcarrier spacing in the subcarrier spacings of the bandwidth parts configured by each frequency-domain bandwidth configuration is adopted as the subcarrier spacing of the RB, which, compared with adoption of a relatively small subcarrier spacing as the subcarrier spacing of the RB, may effectively reduce a bit number for configuration of the bandwidth parts and reduce the control signaling overhead.
  • the position of the bandwidth part may be configured by adopting the offset relative to the synchronization signal, and a terminal may obtain information about a position of a bandwidth part 1 without learning a system bandwidth, so that a control signaling overhead in notifying the terminal of the system bandwidth by the network device may be effectively reduced, and bandwidth part configuration flexibility is improved.
  • the terminal is not required to search the position of the system bandwidth, so that a requirement on processing complexity of the terminal is also reduced, and reduction in cost and power consumption of the terminal is facilitated.
  • FIG. 4 is a structure diagram of a terminal according to another embodiment of the disclosure, as shown in FIG. 4 .
  • the network device of the embodiment may include a receiving unit 41 and a determination unit 42 .
  • the receiving unit 41 is configured to receive configuration information, the configuration information being used to configure at least one frequency-domain bandwidth configuration, a size and/or position of a bandwidth part configured by each of the at least one frequency-domain bandwidth configuration being defined by adopting the same frequency-domain unit as a unit, the frequency-domain unit including N RBs and N being an integer more than or equal to 1.
  • the determination unit 42 is configured to determine the at least one frequency-domain bandwidth configuration according to the configuration information.
  • the bandwidth part configured by each frequency-domain bandwidth configuration has the same subcarrier spacing or different subcarrier spacings. There are no particular limits made thereto in the embodiment.
  • a subcarrier spacing of the RB may be any subcarrier spacing in the subcarrier spacings of the bandwidth part configured by each frequency-domain bandwidth configuration.
  • the subcarrier spacing of the RB is a maximum subcarrier spacing in the subcarrier spacings of the bandwidth part configured by each frequency-domain bandwidth configuration.
  • the maximum subcarrier spacing in the subcarrier spacings of the bandwidth parts configured by each frequency-domain bandwidth configuration is adopted as the subcarrier spacing of the RB, which, compared with adoption of a relatively small subcarrier spacing as the subcarrier spacing of the RB, may effectively reduce a bit number for configuration of the bandwidth parts and reduce a control signaling overhead.
  • the size of the bandwidth part configured by each frequency-domain bandwidth configuration may be the number of frequency-domain units D in the bandwidth part configured by the frequency-domain bandwidth configuration.
  • the position of the bandwidth part configured by each frequency-domain bandwidth configuration is a relative offset of the bandwidth part configured by the frequency-domain bandwidth configuration relative to a synchronization signal or a cell carrier, the relative offset being defined by adopting the frequency-domain unit.
  • the relative offset may be an offset of a center frequency point, frequency-domain high end or frequency-domain low end of the bandwidth part configured by each frequency-domain bandwidth configuration relative to a center frequency point, frequency-domain high end or frequency-domain low end of the synchronization signal.
  • the relative offset may be an offset of the center frequency point, frequency-domain high end or frequency-domain low end of the bandwidth part configured by each frequency-domain bandwidth configuration relative to a center frequency point, frequency-domain high end or frequency-domain low end of the cell carrier,
  • the configuration information received by the receiving unit 41 may further include at least one of:
  • the information about the subcarrier spacings of the bandwidth part configured by each frequency-domain bandwidth configuration may be information of serial numbers of the subcarrier spacings of the bandwidth part configured by each frequency-domain bandwidth configuration, or may also be information of a serial number of a parameter set of the bandwidth part configured by each frequency-domain bandwidth configuration, the parameter set of the bandwidth part configured by each frequency-domain bandwidth configuration at least including a subcarrier spacing and cyclic prefix of the bandwidth part configured by each frequency-domain bandwidth configuration, for example, a parameter set 1 (subcarrier spacing 1 , cyclic prefix 1 ) and a parameter set 2 (subcarrier spacing 2 , cyclic prefix 2 ).
  • a parameter set 1 subcarrier spacing 1 , cyclic prefix 1
  • a parameter set 2 subcarrier spacing 2 , cyclic prefix 2
  • the receiving unit 31 may specifically be configured to receive the configuration information sent through high-layer signaling or a system broadcast message.
  • the receiving unit 31 may further be configured to receive first indication information, the first indication information including information of a serial number indicating one frequency-domain bandwidth configuration in the at least one frequency-domain bandwidth configuration.
  • the receiving unit 31 may specifically be configured to receive the first indication information sent through high-layer signaling or a system broadcast message or DCI.
  • the receiving unit 31 may further be configured to receive second indication information, the second indication information including frequency-domain resource allocation information based on one frequency-domain bandwidth configuration in the at least one frequency-domain bandwidth configuration.
  • the receiving unit 31 may specifically be configured to receive the second indication information sent through high-layer signaling or a system broadcast message or DCI.
  • the configuration information is received through the receiving unit, the configuration information being used to configure the at least one frequency-domain bandwidth configuration, the size and/or position of the bandwidth part configured by each of the at least one frequency-domain bandwidth configuration being defined by adopting the same frequency-domain unit as the unit, the frequency-domain unit including the N RBs and N being an integer more than or equal to 1, and the at least one frequency-domain bandwidth configuration is further determined through the determination unit according to the configuration information.
  • the size and/or position of the bandwidth part configured by each frequency-domain bandwidth configuration are/is defined by adopting the same frequency-domain unit as the unit, which, compared with configuration of bandwidth parts by adopting different resource granularities, may unify control signaling structures, thereby effectively ensuring a relatively low control signaling overhead and reducing device complexity.
  • the size and/or position of the bandwidth part configured by each frequency-domain bandwidth configuration are/is defined by adopting the same frequency-domain unit as the unit, which, compared with configuration of bandwidth parts by adopting different resource granularities, may unify control signaling structures, thereby reducing processing complexity of a terminal.
  • the maximum subcarrier spacing in the subcarrier spacings of the bandwidth parts configured by each frequency-domain bandwidth configuration is adopted as the subcarrier spacing of the RB, which, compared with adoption of a relatively small subcarrier spacing as the subcarrier spacing of the RB, may effectively reduce a bit number for configuration of the bandwidth parts and reduce the control signaling overhead.
  • the position of the bandwidth part may be configured by adopting the offset relative to the synchronization signal, and the terminal may obtain information about a position of a bandwidth part 1 without learning a system bandwidth, so that a control signaling overhead in notifying the terminal of the system bandwidth by the network device may be effectively reduced, and bandwidth part configuration flexibility is improved.
  • the terminal is not required to search the position of the system bandwidth, so that a requirement on processing complexity of the terminal is also reduced, and reduction in cost and power consumption of the terminal is facilitated.
  • the disclosed system, device and method may be implemented in another manner.
  • the device embodiment described above is only schematic, and for example, division of the units is only logic function division, and other division manners may be adopted during practical implementation.
  • multiple units or components may be combined or integrated into another system, or some characteristics may be neglected or not executed.
  • coupling or direct coupling or communication connection between each displayed or discussed component may be indirect coupling or communication connection, implemented through some interfaces, of the device or the units, and may be electrical and mechanical or adopt other forms.
  • the units described as separate parts may or may not be physically separated, and parts displayed as units may or may not be physical units, and namely may be located in the same place, or may also be distributed to multiple network units. Part or all of the units may be selected to achieve the purpose of the solutions of the embodiments according to a practical requirement.
  • each function unit in each embodiment of the disclosure may be integrated into a processing unit, each unit may also exist independently, and two or more than two units may also be integrated into a unit.
  • the integrated unit may be implemented in a hardware form and may also be implemented in form of hardware and software functional unit.

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WO2023001024A1 (zh) * 2021-07-23 2023-01-26 华为技术有限公司 一种配置方法及通信装置

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