WO2018137429A1 - 频域位置的指示方法及装置 - Google Patents

频域位置的指示方法及装置 Download PDF

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Publication number
WO2018137429A1
WO2018137429A1 PCT/CN2017/115799 CN2017115799W WO2018137429A1 WO 2018137429 A1 WO2018137429 A1 WO 2018137429A1 CN 2017115799 W CN2017115799 W CN 2017115799W WO 2018137429 A1 WO2018137429 A1 WO 2018137429A1
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Prior art keywords
channel
frequency
frequency domain
location
relative
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PCT/CN2017/115799
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English (en)
French (fr)
Inventor
苗婷
毕峰
郝鹏
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中兴通讯股份有限公司
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Publication of WO2018137429A1 publication Critical patent/WO2018137429A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • H04W72/23Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/04Wireless resource allocation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/04Wireless resource allocation
    • H04W72/044Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453Resources in frequency domain, e.g. a carrier in FDMA

Definitions

  • the present disclosure relates to the field of communications, for example, to a method and apparatus for indicating a frequency domain location.
  • the fifth generation mobile communication technology (the 5 th mobile communication technology, 5G)
  • the carrier frequency is higher than the fourth generation mobile communication system used for communication carrier frequency, such as 28GHz Or 45 GHz, 5G new radio access technology (new RAT (Radio Access Technology)) system potential working frequency band reaches 100GHz.
  • 5G new radio access technology new RAT (Radio Access Technology)
  • the physical carrier center frequency (ie, DC frequency) is placed at the frequency domain location corresponding to each channel number.
  • the frequency spacing between adjacent channel numbers is referred to as a channel raster interval or a carrier raster interval.
  • the frequency domain step size of the terminal search synchronization signal is called a frequency raster interval or a UE (User Terminal) interval.
  • the terminal grid spacing is the same as the channel grid spacing, that is, the terminal searches for the synchronization signal in the frequency domain position corresponding to all possible channel numbers
  • FIG. 1 is the terminal grid and channel. A schematic diagram of the channel structure when the grids are the same, as shown in FIG.
  • the industry proposes to use a larger The terminal grid spacing, ie the terminal grid spacing, can be greater than the channel grid spacing.
  • the center frequency of the synchronization signal, broadcast channel, other related signals, or other related channels is likely to be different from the center frequency of the physical carrier.
  • Embodiments of the present invention provide a method and apparatus for indicating a frequency domain location, so that a base station can indicate The frequency domain location of the physical carrier and the frequency domain location of the other signals or channels other than the synchronization signal and the physical broadcast channel.
  • a method for indicating a frequency domain location includes:
  • the first type of node calculates location information of a labeled frequency point of the carrier, where the location information is used to indicate a frequency domain location of the carrier, and the carrier includes at least one of a virtual carrier and a physical carrier;
  • the first type of node sends the location information to a second type of node.
  • a frequency domain location indicating device applied to a base station, comprising:
  • a sending calculation module configured to calculate location information of a labeled frequency point of the carrier, where the location information is used to indicate a frequency domain location of the carrier, and the carrier includes at least one of a virtual carrier and a physical carrier;
  • the sending module is configured to send the location information to the terminal.
  • a base station comprising:
  • At least one processor At least one processor
  • the memory stores instructions executable by the at least one processor, the instructions being executed by the at least one processor to cause the at least one processor to perform the method described above.
  • a terminal comprising:
  • At least one processor At least one processor
  • the memory stores instructions executable by the at least one processor, the instructions being executed by the at least one processor to cause the at least one processor to perform the following method.
  • a method for indicating a frequency domain location includes:
  • the first type of node receives location information of a labeled frequency point of a carrier sent by the second type of node, where the location information is used to indicate a frequency domain location of the carrier, and the carrier includes at least one of a virtual carrier and a physical carrier.
  • the first type of node acquires a location of a marker frequency point of the carrier according to the location information.
  • a frequency domain location indicating device applied to the terminal, comprising:
  • a receiving module configured to receive location information of a labeled frequency point of a carrier sent by the base station, where the location information is used to indicate a frequency domain location of the carrier, and the carrier includes at least one of a virtual carrier and a physical carrier ;as well as
  • an acquiring module configured to acquire, according to the location information, a location of a marker frequency point of the carrier.
  • a computer readable storage medium storing computer executable instructions arranged to perform the above method.
  • FIG. 1 is a schematic diagram of a channel structure when a terminal grid is the same as a channel grid;
  • FIG. 2 is a flowchart of a method for indicating a frequency domain location, according to an embodiment
  • FIG. 3 is a flowchart of a method for indicating a frequency domain location according to another embodiment
  • FIG. 4 is a block diagram showing the structure of a pointing device according to an embodiment of a frequency domain
  • FIG. 5 is a structural block diagram of a frequency domain location indicating apparatus according to another embodiment
  • FIG. 6 is a schematic diagram of a channel structure in which a terminal grid is sparse than a channel grid according to an embodiment
  • FIG. 7 is a schematic diagram of a channel structure according to an embodiment
  • FIG. 8 is a schematic diagram of a channel structure according to another embodiment.
  • FIG. 9 is a schematic diagram of channel grouping according to another embodiment.
  • FIG. 10 is a schematic diagram of a channel structure according to another embodiment.
  • FIG. 11 is a schematic diagram of a channel structure according to another embodiment
  • FIG. 12 is a schematic diagram of a channel structure according to another embodiment
  • FIG. 13 is a schematic diagram of a channel structure according to another embodiment.
  • FIG. 14 is a schematic diagram of a channel structure according to another embodiment.
  • FIG. 15 is a schematic structural diagram of a base station according to an embodiment.
  • FIG. 16 is a schematic structural diagram of a terminal according to an embodiment.
  • FIG. 2 is a flowchart of a method for indicating a frequency domain location according to an embodiment. As shown in FIG. 2, the flow includes the following steps.
  • the first type of node sends the location information of the labeled frequency point of the carrier to the second type of node, where the location information is used to indicate the frequency domain location of the carrier, and the carrier includes at least one of a virtual carrier and a physical carrier.
  • the method further includes step 201.
  • step 201 the first node calculates location information of the marker frequency of the carrier.
  • the first type of node sends the location information of the marker frequency of the carrier to the second type of node, where the location information is used to indicate the frequency domain location of the carrier, so that the base station can indicate the synchronization information to the terminal.
  • the frequency domain location of the signal and other channels other than the physical broadcast channel or other channels ie, the frequency domain location of the virtual carrier
  • the frequency domain location of the marking frequency of the physical carrier to complete the information transmission between the base station and the terminal, and solve The problem that the base station cannot indicate the frequency domain position of other signals or other channels other than the synchronization signal and the physical broadcast channel and the frequency domain position of the physical carrier.
  • FIG. 3 is a flowchart of a method for indicating a frequency domain location according to an embodiment. As shown in FIG. 3, the flow includes the following steps.
  • the second type of node receives the location information of the marker frequency of the carrier sent by the first type of node, where the location information is used to indicate the frequency domain location of the carrier.
  • the method further includes step 304.
  • step 304 the second type of node acquires the location of the marked frequency point of the carrier according to the location information.
  • the first type of node in the foregoing step may be a base station, for example, a Transmit-Receive Point (TRP), a relay node, a macro base station, a micro base station, a pico base station, a home base station, a radio remote or access Access point (AP).
  • TRP Transmit-Receive Point
  • AP access Access point
  • the second type of node can be a terminal or a relay node.
  • the first type of node is a base station
  • the second type of node is a terminal.
  • the location information of the marked frequency point includes any one of the following: a channel number and a physical resource block (PRB) index.
  • PRB physical resource block
  • the location information of the marked frequency point is carried on the physical broadcast channel, or the location information of the marked frequency point is carried on the fixed time-frequency resource.
  • the physical broadcast channel includes a first type of physical broadcast channel and a second type of physical broadcast channel, and when the location information of the labeled frequency point is carried on the physical broadcast channel, the location information of the marked frequency point is carried in the A second type of physical broadcast channel, the first type of physical broadcast channel carrying location information of a marker frequency point of the second type of physical broadcast channel.
  • the fixed time-frequency resource when the fixed time-frequency resource includes the first type of fixed time-frequency resource and the second type of fixed time-frequency resource, when the location information of the marked frequency point is carried on the fixed time-frequency resource, The location information of the tag frequency point is carried in the second type of fixed time-frequency resource, and the first type of fixed time-frequency resource carries the location information of the tag frequency point of the second type of fixed time-frequency resource.
  • the location information of the labeled frequency of the carrier may also be the location information of the labeled frequency of the carrier of the neighboring cell.
  • the location information of the tag frequency of the carrier of the neighboring cell is carried in the first class node to send a Radio Resource Control (RRC) message.
  • RRC Radio Resource Control
  • the location information of the marked frequency of the carrier is the same as the location information of the labeled frequency of the carrier of the neighboring cell.
  • the virtual carrier is located within a physical carrier bandwidth, and the virtual carrier is used to carry other signals or other channels than the synchronization signal and the physical broadcast channel, such as a common control subband.
  • the information carried by the virtual carrier includes at least one of: first downlink control information for demodulating a random access response, second downlink control information for demodulating system information, and third for demodulating a paging message. Downstream control information.
  • the channel number includes one or more of: one or more of a group of channel numbers corresponding to a current frequency domain location; and one or more of a relative channel number relative to a current frequency domain location; One or more of the relative channel numbers relative to the current frequency domain location and the left and right offset indications; one or more of the relative channel group indices relative to the current frequency domain location and the intra-group channel index; and relative to the current frequency One or more of the relative channel group indices of the domain locations and the intra-group channel index and left and right offset indications.
  • the relative channel number refers to an offset relative to a current frequency domain position in units of channel grid intervals.
  • the relative channel group index refers to an offset with respect to a current frequency domain position in units of a set of channel grid intervals.
  • the PRB index includes one of the following:
  • One or more of the relative PRB group indices relative to the current frequency domain location and the intra-group PRB index and left and right offset indications are provided.
  • the relative PRB index refers to an offset in a PRB bandwidth unit with respect to a current frequency domain location.
  • the relative PRB group index refers to an offset with respect to a current frequency domain location in units of a set of PRB bandwidths.
  • the left and right offset indication is used to indicate whether the position of the marked frequency point is lower or higher relative to the current frequency domain position.
  • the current frequency domain location refers to a marker frequency location of the synchronization signal, or a marker frequency location of the physical broadcast channel, or a synchronization signal block (SSblock) (the synchronization signal block includes synchronization) Marked frequency point position of the signal's time-frequency resource block), or synchronization
  • SSblock synchronization signal block
  • the synchronization signal block includes synchronization
  • Marked frequency point position of the signal's time-frequency resource block Marked frequency point position of the signal's time-frequency resource block
  • the frequency domain location of the terminal raster is a subset of the frequency domain location of the channel raster, or the frequency domain location of the terminal raster is completely different from the frequency domain location of the channel raster, or a frequency domain of a part of the terminal raster
  • the location is a subset of the frequency domain location of the channel raster, and the frequency domain location of the other portion of the terminal raster is completely different from the frequency domain location of the channel raster.
  • the marking frequency point includes any one of the following: a center frequency point, a left boundary frequency point, a lower boundary frequency point, a right boundary frequency point, and an upper boundary frequency point.
  • the location information of the marking frequency point when the location information of the marked frequency point includes the channel number, the location information of the marking frequency point includes: a channel number or a relative channel indicated in the location information relative to the marked frequency point in units of subcarrier spacing of the synchronization signal.
  • the location information of the marker frequency point when the location information of the marker frequency point includes the PRB index, the location information of the marker frequency point includes: a subcarrier index in the PRB or a subcarrier index in the PRB in the group.
  • the channel grid is any one of the following: a least common multiple of the LTE channel grid (100 kHz) and the subcarrier spacing of the LTE (15 kHz) multiplied by a power of M of 2; The least common multiple of the LTE channel grid (100 kHz) and the subcarrier spacing of the synchronization signal (such as 15 kHz multiplied by 2 to the power of M); the least common multiple of the maximum subcarrier spacing of the LTE channel grid (100 kHz) corresponding to the current frequency range; N times the least common multiple of the LTE channel grid (100 kHz) and LTE subcarrier spacing (15 kHz); LTE channel grid (100 kHz) and the PRB of the synchronization signal (eg 12 times 15 kHz times 2 M power) N times the least common multiple; N times the subcarrier spacing of the synchronization signal (such as 15 kHz multiplied by 2 to the power of M); N times the PRB of the synchronization signal (such
  • the method of the foregoing embodiment may be implemented by means of software plus a general hardware platform, or may be implemented by hardware.
  • the technical solution of the foregoing embodiment may be embodied in the form of a software product stored in a storage medium (such as a read-only memory (ROM), a random access memory (RAM),
  • ROM read-only memory
  • RAM random access memory
  • the disk or the optical disk includes one or more instructions for causing a terminal device (which may be a mobile phone, a computer, a server or a network device) to perform the method of the above embodiment.
  • the following embodiments provide a frequency domain location indicating device, which can implement the above embodiment.
  • the method in may implement at least one of software and hardware of a predetermined function.
  • the apparatus described in the following embodiments may be implemented in software, hardware, or a combination of software and hardware.
  • FIG. 4 is a structural block diagram of a frequency domain location indication apparatus, which is applied in a base station.
  • the apparatus includes a calculation module 40 and a transmission module 41, according to an embodiment.
  • the calculation module 40 is configured to calculate location information of a marker frequency point of the carrier, where the location information is used to indicate a frequency domain location of the carrier, where the carrier includes at least one of a virtual carrier and a physical carrier.
  • the sending module 41 is arranged to transmit the location information to the terminal.
  • FIG. 5 is a structural block diagram of a frequency domain location indicating apparatus, which is applied to a terminal.
  • the apparatus includes: a receiving module 50 and an obtaining module 51, according to an embodiment.
  • the receiving module 50 is configured to receive location information of a marker frequency point of a carrier transmitted by the base station, where the location information is used to indicate a frequency domain location of the carrier.
  • the obtaining module 51 is configured to acquire a location of a marker frequency point of the carrier according to the location information.
  • the location information of the marked frequency point includes one of the following: a channel number and a relative physical resource block PRB index.
  • the channel grid is one of: a Long-Term Evolution (LTE) channel grid and a least common multiple of the subcarrier spacing of the LTE multiplied by a non-negative integer power of 2; the LTE channel grid The least common multiple of the subcarrier spacing of the synchronization signal; the least common multiple of the maximum subcarrier spacing corresponding to the current frequency range of the LTE channel grid; N times the least common multiple of the LTE channel grid and the subcarrier spacing of the LTE; LTE channel grid N times the least common multiple of the PRB of the synchronization signal; N times the subcarrier spacing of the synchronization signal; N times the PRB of the synchronization signal; and N times the maximum subcarrier spacing corresponding to the current frequency range; wherein N is a positive integer .
  • LTE Long-Term Evolution
  • the above modules can be implemented by software or hardware.
  • the hardware implementation can be implemented in the following manner: the above modules are all located in the same processor; or the above modules are respectively located in different processors in any combination.
  • the channel grid spacing (ie, the channel grid) refers to the frequency spacing between adjacent channel numbers
  • the terminal grid spacing (ie, the terminal grid) refers to the frequency at which the terminal searches for the synchronization signal.
  • Domain step size The frequency domain location of the terminal raster refers to the frequency point at which the terminal performs frequency domain search when performing initial access.
  • the left and right offsets indicate whether the frequency domain location notified by the base station is lower or higher than the current frequency domain location, that is, the frequency domain location notified by the base station is to the left or the right of the current frequency domain location.
  • the channel grid in a future wireless communication system (eg, 5G) is defined as 100 kHz, the terminal grid is N times the channel grid, and N is a positive integer.
  • the channel grid is configured to be 100 kHz, which can flexibly adjust the adjacent channel leakage power ratio between adjacent carriers.
  • the 100 kHz channel grid can still flexibly adjust the adjacent channel leakage power ratio between adjacent carriers, and avoids additional spectrum planning.
  • the terminal grid is N times the channel grid. When N is greater than 1, the complexity of the terminal frequency domain search can be reduced compared with LTE.
  • the terminal grid can also be a positive integer multiple of 100 kHz, not necessarily a multiple of the channel grid.
  • the channel grid of future wireless communication systems is defined as:
  • the least common multiple of the LTE channel grid (100 kHz) and the subcarrier spacing of the synchronization signal eg, 15 kHz multiplied by 2 to the power of M (ie, 15 x 2 M )); or,
  • the least common multiple of the LTE channel grid (100 kHz) corresponding to the maximum subcarrier spacing of the current frequency range (eg, the current frequency range supports 3 seed carrier spacings of 60, 120, and 240 kHz, and the maximum subcarrier spacing is 240 kHz); or,
  • N the least common multiple of the LTE channel grid (100 kHz) and the PRB of the synchronization signal (eg, 12 times 15 kHz multiplied by 2 to the power of M (ie, 12 x 15 x 2 M )); or,
  • N the subcarrier spacing of the sync signal (such as 15 kHz multiplied by 2 to the power of M); or,
  • N the PRB of the sync signal (eg 12 times 15 kHz multiplied by 2 to the power of 2);
  • M is a non-negative integer and N is a positive integer.
  • the terminal grid may be a multiple of the channel grid, or any one of the above methods for selecting the channel grid.
  • the channel grid should also be changed accordingly.
  • M and N the above-mentioned channel grid and terminal grid configuration can make the central subcarrier of the synchronization signal be located on one subcarrier of the physical carrier (ie, with the physical carrier).
  • the resource network of the synchronization signal is consistent with the resource grid of the physical carrier, and the utilization efficiency of the spectrum resource and the performance of the synchronization signal detection by the terminal can be improved.
  • the frequency domain position of the terminal grid can always be located at a channel grid position, which makes the design of the system simpler.
  • the terminal grid is a positive integer multiple of the channel grid, ie the terminal grid is a multiple of 100 kHz.
  • This configuration enables dual mode terminals supporting LTE and future wireless communication systems to share one frequency. Synthesizers can reduce terminal costs.
  • FIG. 6 is a terminal grid to channel gate according to an embodiment.
  • Schematic diagram of a sparse channel structure as shown in FIG. 6, the synchronization signals corresponding to channels 0 and 1 are transmitted at the terminal grid position (frequency domain position of the terminal grid) 0, and the synchronization signals corresponding to channels 2 and 3 are at the terminal gate.
  • the grid is sent on position 1.
  • Each terminal grid location corresponds to a plurality of channel numbers, and therefore, it is required to indicate which channel or channels the synchronization signal corresponds to, or a location of a marker frequency point indicating a physical carrier corresponding to the synchronization signal, and a virtual location corresponding to the synchronization signal.
  • the virtual carrier may be located within a physical carrier bandwidth, and the virtual carrier is used to carry other signals or other channels than the synchronization signal and the physical broadcast channel, such as a common control subband.
  • the marker frequency includes any one of the following: a center frequency point, a left boundary frequency point, a lower boundary frequency point, a right boundary frequency point, and an upper boundary frequency point.
  • FIG. 6 illustrates a terminal raster location as a subset of channel raster locations as an example.
  • the terminal grid location can be completely different from the channel grid location (the frequency domain location of the channel grid).
  • a part of the terminal grid position is a subset of the channel grid position, and another part of the terminal grid position is completely different from the channel grid position.
  • An example gives a method of indicating the center frequency of a carrier (virtual carrier or physical carrier) using a channel number or a relative channel number.
  • the terminal grid is N times the channel grid (for example, N is 3), and it is assumed that each terminal grid corresponds to K channel numbers, that is, the physical carriers corresponding to the K channels are sent at the terminal grid.
  • the synchronization signals are numbered 1 to K, respectively, and the correspondence between the K channel numbers and the actual channel numbers is predefined or indicated by RRC.
  • the center frequency of the physical carrier is the frequency domain location corresponding to the channel grid with the channel number (3m+1), and the center frequency of the virtual carrier is the frequency domain location corresponding to the channel grid with the channel number (3m+3).
  • the center frequency of the synchronization signal is corresponding to the channel grid with channel number (3n) Frequency domain location,
  • FIG. 7 is a schematic diagram of a channel structure of an embodiment, as shown in FIG.
  • the following describes the indication method by taking the location information indicating the center frequency of the physical carrier as an example.
  • the base station sends the location information of the center frequency of the physical carrier, where the location information can be carried on the physical broadcast channel, and the information content includes:
  • a channel number corresponding to a center frequency of the physical carrier (3m+1), and a number of bits occupied by the location information is a minimum integer greater than log 2 M, where M is a maximum channel number of the wireless communication system;
  • the channel number k corresponding to the center frequency of the physical carrier, and the number of bits occupied by the location information is a minimum integer greater than log 2 K;
  • the relative channel number s corresponding to the center frequency of the physical carrier (for example, K (K is an odd number) relative channel number of the channel relative to the center frequency of the synchronization signal, and K is an odd number when the relative channel number is ..., s, ..., among them,
  • K K is an odd number
  • the relative channel number when K is even is -K/2+1,...,0,1,...,s,.... .., K/2, or -K/2,...,0,1,...,s,...,K/2-1)
  • the number of bits is the smallest integer greater than log 2 K; or
  • the relative channel number corresponding to the center frequency of the physical carrier ie, the frequency shift of the center frequency of the physical carrier relative to the center frequency of the synchronization signal
  • the left and right offset indication eg, 1 bit
  • the offset is (3m+1-3n)
  • the position information occupies the number of bits (greater than the smallest integer +1 of log 2 K1), wherein the channel grid In units, K1 is the maximum offset of the center frequency of the physical carrier relative to the center frequency of the synchronization signal, which may be pre-configured by the network.
  • the terminal can receive the location information of the center frequency of the physical carrier, thereby obtaining the location of the center frequency of the physical carrier.
  • the location information may also include an offset to the left or right in units of subcarrier spacing of the synchronization signal with respect to the channel number (3m+1) or the relative channel number (3m+1-3n). the amount.
  • the following example relates to the notification that the offset is omitted when the offset is 0, and the offset may be included in the location information in order to unify the standard.
  • the above method is also applicable to the base station indicating the location of the center frequency of the virtual carrier to the terminal.
  • the difference is that the center frequency of the virtual carrier is different from the physical carrier (the center frequency of the virtual carrier in Figure 7). On the channel (3m + 3)).
  • An example shows a method of using a channel number to indicate a left boundary frequency point (or a lower boundary frequency point), a center frequency point, or a right boundary frequency point (or an upper boundary frequency point) of a virtual carrier and a physical carrier.
  • FIG. 8 is a schematic diagram of a channel structure according to an embodiment.
  • a center frequency of a physical carrier is a frequency domain position corresponding to a channel (3m+1)
  • a center frequency point of a synchronization signal is a frequency domain position corresponding to a channel 3n.
  • the center frequency of the virtual carrier is between the channels (3m+2) and (3m+3).
  • the indication method will be described by taking the position indicating the left boundary frequency point (or the lower boundary frequency point) of the virtual carrier as an example.
  • the base station sends location information of a left boundary frequency point (or a lower boundary frequency point) of the virtual carrier, where the location information may be carried on a physical broadcast channel, where the location information includes:
  • the channel number corresponding to the left boundary frequency point (or lower boundary frequency point) of the virtual carrier (for example, selecting the nearest channel number (3m+1) to the left of the left boundary frequency point of the virtual carrier), due to the left boundary frequency point of the virtual carrier
  • the frequency domain position corresponding to the channel (3m+1) is deviated. Therefore, the location information may further include a relative channel number (3m+1), an offset to the right in units of subcarrier spacing of the synchronization signal, for example.
  • the offset is X subcarriers.
  • the number of bits occupied by the location information may include two parts, one part is the number of bits occupied by the channel number (the smallest integer greater than log 2 M, where M is the largest channel number of the wireless communication system), and the other part is relative to the location.
  • the number of bits occupied by the offset of the channel number indicated in the information greater than the smallest integer of log 2 L, where L is the number of subcarriers included in the channel grid interval).
  • the number of bits occupied by the location information may be the sum of the number of bits occupied by the two parts.
  • the terminal receives the location information of the left boundary frequency point (or the lower boundary frequency point) of the virtual carrier, thereby obtaining the position of the left boundary frequency point (or the lower boundary frequency point) of the virtual carrier, that is, the frequency at which the channel (3m+1) is located, And the relative channel (frequency offset of 3m+1) (ie, the product of the upper frequency offset and the synchronization signal subcarrier spacing).
  • the channel number corresponding to the left boundary frequency point (or the lower boundary frequency point) of the virtual carrier in the location information may also select the channel number closest to the right side of the left boundary frequency point of the virtual carrier (3m+2).
  • the location information may further include a relative channel number (3m+2), an offset to the left in units of subcarrier spacing of the synchronization signal (eg, an offset of Y subcarriers).
  • the terminal receives the position information of the left boundary frequency point (or the lower boundary frequency point) of the virtual carrier, and obtains the position of the left boundary frequency point (or the lower boundary frequency point) of the virtual carrier, that is, the frequency at which the channel (3m+2) is located, Subtract the frequency offset of the relative channel (3m+2), ie subtract the frequency offset and the synchronization signal subcarrier The product of the wave spacing. Selecting the channel number closest to the left or right side of the left boundary frequency point (or lower boundary frequency point) of the virtual carrier is specified by the standard advance, or an additional 1 bit of information may be added to indicate the left boundary frequency of the selected virtual carrier. The nearest channel number to the left or right of the point (or lower boundary frequency).
  • the foregoing method is also applicable to the base station indicating the center frequency point of the virtual carrier or the position of the right boundary frequency point (or the upper boundary frequency point) to the terminal, and the base station indicates the left boundary frequency point (or the lower boundary frequency point) of the physical carrier to the terminal. , or the center frequency point, or the position of the right boundary frequency point (or the upper boundary frequency point), you can also use the above method.
  • the resource cost of the location of the marked frequency point indicating the carrier is large, for example, the absolute frequency of the F-band in LTE
  • the number of points 38350, that is, the maximum number of channels is 38350, so 16 bits are required to represent the channel number, and the resource overhead is large.
  • An example shows an indication method for indicating a left boundary frequency point (or a lower boundary frequency point), a center frequency point, or a right boundary frequency point (or an upper boundary frequency point) of a virtual carrier and a physical carrier using a relative channel number.
  • the indication method will be described by taking the position indicating the left boundary frequency point (or the lower boundary frequency point) of the virtual carrier as an example.
  • the channel number in the location information is replaced by a relative channel number, for example, replaced by the left side of the left boundary frequency point (or the lower boundary frequency point) of the virtual carrier.
  • Relative channel number (3m + 1-3n). Since it is a relative channel number, the location information may further include a left and right offset indication, for example, -1 and 1 are represented by 1-bit information, where -1 indicates a left boundary frequency point (or a lower boundary frequency point) of the virtual carrier.
  • 1 On the left side of the center frequency of the synchronization signal, 1 indicates that the left boundary frequency point (or lower boundary frequency point) of the virtual carrier is on the right side of the center frequency point of the synchronization signal, and the position information may further include relative channel number (3m+1-3n), the offset to the right in units of subcarrier spacing of the synchronization signal, for example, the offset is X subcarriers.
  • the calculation method of the number of bits occupied by the location information is the same as the calculation method in the example of the foregoing FIG. 8.
  • the part of the number of bits occupied by the location information is the number of bits occupied by the relative channel number (the smallest integer greater than log 2 M, Where M is the maximum channel number of the wireless communication system, and M represents the maximum offset of the left boundary frequency point (or lower boundary frequency point) of the virtual carrier relative to the center frequency point of the synchronization signal in the channel grid, ie Maximum relative channel number).
  • Another portion of the number of bits occupied by the location information is the number of bits occupied relative to the offset of the relative channel number indicated in the location information (a minimum integer greater than log 2 L, where L is the subcarrier included in the channel grid interval) number).
  • the bit number occupied by the location information is the sum of the number of bits occupied by the two parts.
  • the relative channel number corresponding to the left boundary frequency point (or the lower boundary frequency point) of the virtual carrier in the location information may also select the nearest relative channel number (3m+) from the right side of the left boundary frequency point of the virtual carrier. 2-3n).
  • the indication method may be the same as selecting the closest relative channel number (3m+1-3n) on the left side of the left boundary frequency point (or lower boundary frequency point) of the virtual carrier. Selecting the nearest relative channel number from the left boundary frequency point (or lower boundary frequency point) of the virtual carrier to the left or right side is specified by the standard advance, or an additional 1 bit information may be added to indicate the left boundary of the selected virtual carrier.
  • the method for the base station to indicate the left boundary frequency point (or the lower boundary frequency point) of the virtual carrier to the terminal is also applicable to the base station indicating the center frequency point of the virtual carrier to the terminal, or the right boundary frequency point (or the upper boundary frequency point) )s position.
  • the base station may also indicate to the terminal the left boundary frequency point (or the lower boundary frequency point) of the physical carrier, or the position of the center frequency point or the right boundary frequency point (or the upper boundary frequency point).
  • the terminal grid is more sparse than the channel grid (ie, the terminal grid spacing is larger than the channel grid spacing), and when the terminal grid is large, the relative channel number is used to indicate the carrier (virtual carrier or physics)
  • the location of the marker frequency of the carrier may also require a large resource overhead. Therefore, in this example, the channels are grouped, and the location of the marker frequency of the carrier (virtual carrier or physical carrier) is indicated by the channel group or the relative channel group method.
  • the subcarrier spacing is 480 kHz
  • FIG. 9 is a schematic diagram of a channel grouping according to an embodiment.
  • a channel group index is used to indicate a location of a marker frequency point of a carrier (virtual carrier or a physical carrier), and the grouping method includes: all channels. According to the number, one group per M consecutive channels, which are sequentially grouped (the number of packets is related to the total number of channels, and the last group contains the number of channels less than or equal to M).
  • the relative channel group index is used to indicate the location of the marked frequency point of the virtual carrier or the physical carrier, wherein the relative channel group index represents the offset of the center frequency point of the synchronization signal in units of channel groups, and the grouping method is: Starting from the channel where the center frequency of the synchronization signal is located, M consecutive channels are sequentially grouped into the left or right, and whether the channel where the center frequency of the synchronization signal is located contains the first channel group depends on the implementation.
  • FIG. 10 is a schematic diagram of a channel structure according to an embodiment, as shown in FIG.
  • the intra-group channel index is related to the number of channels included in the channel group. According to the above grouping manner, the intra-group channel index is 0, 1, ..., M-1.
  • the terminal grid is N times the channel grid (for example, N is ((m+1) M-1)/n), the center of the virtual carrier.
  • the frequency point is located on the channel ((m+2)M-1).
  • the following describes the indication method by taking the position indicating the center frequency of the virtual carrier as an example.
  • the base station sends the location information of the central frequency point of the virtual carrier, where the location information may be carried on the physical broadcast channel, where the location information includes: a channel group index corresponding to a central frequency point of the virtual carrier (eg, m+1), the group Internal channel index (for example, M-1).
  • a channel group index corresponding to a central frequency point of the virtual carrier eg, m+1
  • the group Internal channel index for example, M-1
  • the terminal receives the location information of the center frequency of the virtual carrier, and can obtain the location of the center frequency of the virtual carrier.
  • the location information may further include: in the sub-carrier interval of the synchronization signal, relative to the group.
  • the intra-group channel index that is closest to the left or right side of the center frequency of the virtual carrier is determined.
  • the implementation scheme can refer to the example in FIG. 8 .
  • FIG. 12 is a schematic diagram of a channel structure according to an embodiment. The indication method is described below by taking a position indicating a center frequency point of a virtual carrier as an example.
  • the base station sends location information of a central frequency point of the virtual carrier, where the location information may be carried on a physical broadcast channel, where the location information includes: a relative channel group index (eg, k) corresponding to a center frequency point of the virtual carrier, and an intra-group channel Index (for example, x), and left and right offset indications.
  • the left and right offset indication is used to indicate that the center frequency of the virtual carrier is on the left side or the right side of the center frequency of the synchronization signal, for example, 1-bit information represents -1 and 1, respectively, indicating that the center frequency of the virtual carrier is in synchronization The left and right sides of the center frequency of the signal.
  • the terminal receives the location information of the center frequency of the virtual carrier, and can obtain the location of the center frequency of the virtual carrier.
  • the location information may further include: a sub-carrier spacing of the synchronization signal, relative to the intra-group channel index.
  • the offset of the corresponding frequency domain position select the left or right of the center frequency of the distance virtual carrier.
  • the nearest intra-group channel index depends on the implementation. For the implementation scheme, refer to the example in Figure 8.
  • the method for the base station to indicate the center frequency of the virtual carrier to the terminal is also applicable to the base station indicating to the terminal the left boundary frequency point (or the lower boundary frequency point) of the virtual carrier, or the right boundary frequency point (or the upper boundary frequency point)
  • the location of the point, the base station indicates to the terminal the left boundary frequency point (or the lower boundary frequency point) of the physical carrier, or the center frequency point, or the position of the right boundary frequency point (or the upper boundary frequency point)
  • the above method may also be used.
  • the following example gives a method of indicating the location of a marked frequency point of a virtual carrier or a physical carrier relative to a PRB index. Since the future wireless communication system can support subcarrier spacing up to 480 kHz, the fifth generation mobile communication system has initially determined that the number of subcarriers included in the PRB is 12, that is, the PRB bandwidth is as high as 5760 kHz, and the PRB bandwidth is likely to be larger than the channel grid interval. When the terminal raster is large, the PRB index or the PRB group index can be used to reduce the indication resource overhead.
  • An example gives a method of indicating the location of a marker frequency of a virtual carrier using a relative PRB index.
  • FIG. 13 is a schematic diagram of a channel structure of an embodiment. As shown in FIG. 13, the center frequency of the virtual carrier is just at the boundary of the PRB, the left boundary frequency point (or the lower boundary frequency point) and the right boundary frequency point (or the upper boundary frequency point). Points are not at the border of the PRB.
  • the indication method will be described below by taking the position indicating the center frequency of the virtual carrier as an example.
  • the base station sends location information of a central frequency point of the virtual carrier, where the location information may be carried on a physical broadcast channel, where the location information includes: a PRB index (eg, m) corresponding to a center frequency point of the virtual carrier, and a left and right offset indication.
  • a PRB index eg, m
  • the terminal receives the location information of the center frequency of the virtual carrier, and can obtain the location of the center frequency of the virtual carrier.
  • the location information includes a PRB index corresponding to a center frequency point of the virtual carrier (eg, m
  • the left and right offset indications may also include subcarrier indices within the PRB.
  • the terminal receives the location information of the center frequency of the virtual carrier, and can obtain the location of the center frequency of the virtual carrier.
  • the location information of the center frequency of the virtual carrier may also include a subcarrier index within the PRB, and the subcarrier index in the PRB may be fixed, that is, the last subcarrier in the PRB.
  • the above method is also applicable to the base station indicating to the terminal the left boundary frequency point (or the lower boundary frequency point) of the physical carrier, or the center frequency point, or the position of the right boundary frequency point (or the upper boundary frequency point).
  • An example gives a method of indicating the location of a marker frequency of a virtual carrier with a relative PRB group index.
  • FIG. 14 is a schematic diagram of a channel structure according to an embodiment. As shown in FIG. 14, each PRB group includes M PRBs, and a center frequency of the virtual carrier is to the left of the center frequency of the synchronization signal. The indication method will be described below by taking the position indicating the center frequency of the virtual carrier as an example.
  • the base station sends the location information of the center frequency of the virtual carrier, where the location information may be carried on the physical broadcast channel, where the location information includes: a relative PRB group index corresponding to the center frequency of the virtual carrier (eg, k), the intra-group PRB The index, the subcarrier index in the PRB in the group, and the left and right offset indication (for example, the left and right offset is represented by 1-bit information, where the value is -1, indicating the leftward offset).
  • the terminal receives the location information of the center frequency of the virtual carrier, thereby obtaining the location of the center frequency of the virtual carrier.
  • the above method is also applicable to the base station indicating to the terminal the left boundary frequency point (or the lower boundary frequency point) of the virtual carrier, or the position of the right boundary frequency point (or the upper boundary frequency point), and the left boundary frequency point of the physical carrier ( Or the lower boundary frequency point), or the center frequency point, or the position of the right boundary frequency point (or the upper boundary frequency point).
  • An example provides a method for a base station to indicate to a local cell terminal the location of a marker frequency point of at least one of a virtual carrier and a physical carrier of a neighboring cell.
  • the base station uses Radio Resource Control (RRC) to transmit the location information of the marker frequency point of at least one of the virtual carrier and the physical carrier of the neighboring cell.
  • RRC Radio Resource Control
  • the location information can be referred to the above example.
  • the RRC message may be sent by broadcast (for example, by system information), or by multicast (for example, to a group of terminals), or by unicast (for example, to a specific terminal).
  • the location of the marking frequency of the virtual carrier (or physical carrier) of the current cell and the neighboring cell is the same.
  • the physical broadcast channel is divided into a first type of physical broadcast channel and a second type of physical broadcast channel, where the physical broadcast channel refers to a second type of physical broadcast channel, and the first type of physical broadcast channel carries a second type of physical broadcast.
  • the first type of physical broadcast channel may have a fixed time-frequency positional relationship with the synchronization signal, for example, the first type of physical broadcast channel and the synchronization signal have the same center frequency and bandwidth.
  • the physical broadcast channels in all the above examples are also applicable to fixed time-frequency resources, and the physical broadcast channels in all the above examples can be replaced with fixed time-frequency resources.
  • the relative channel number (or The relative channel group index, or relative PRB index, or relative PRB group index) may be zero.
  • the starting locations of the terminal grid and the channel grid can be the same.
  • the location information may also only include the channel number. Or relative channel number, or relative channel group index and intra-group channel index, or relative PRB index, or relative PRB group index and intra-group PRB index.
  • the base station when the base station indicates to the terminal one channel corresponding to the terminal grid, the base station indicates the location information to the terminal when the terminal indicates the location information, and the method in the foregoing embodiment may be used.
  • the current frequency domain location is other (for example, a marker frequency location of the synchronization signal, or a marker frequency location of the physical broadcast channel, or a marker frequency location of the synchronization signal block, or a frequency of the terminal raster corresponding to the synchronization signal)
  • the position of the domain, or the frequency domain position of a terminal raster may be the center frequency point of the synchronization signal (or the left boundary frequency point (or the lower boundary frequency point) or the right boundary frequency point) Or the case of the upper boundary frequency point)) is the same.
  • the case where the current frequency domain position is not at the channel grid position may be the same as the current frequency domain position at the channel grid position.
  • the frequency domain resource indication method provided by the foregoing solution enables the base station to indicate to the terminal the frequency domain location of the marked frequency of the physical carrier and other signals or other channels other than the synchronization signal and the physical broadcast channel, to complete between the base station and the terminal. Information transfer.
  • the storage medium may be arranged to store program code for performing the following steps:
  • location information of a labeled frequency point of the carrier where the location information is used to indicate a frequency domain location of the carrier, where the carrier includes at least one of a virtual carrier and a physical carrier.
  • the foregoing storage medium may include a plurality of media that can store program codes, such as a USB flash drive, a ROM, a RAM, a mobile hard disk, a magnetic disk, or an optical disk.
  • program codes such as a USB flash drive, a ROM, a RAM, a mobile hard disk, a magnetic disk, or an optical disk.
  • the processor performs, according to the stored program code in the storage medium, location information of a marker frequency point that sends a carrier to the second type of node, where the location information is used to indicate a frequency domain location of the carrier.
  • the modules or steps described above may be implemented by computing devices, which may be centralized on a single computing device or distributed across a network of computing devices, optionally in the form of program code executable by the computing device. Implemented so that they can be stored in a storage device by a computing device, and in some cases, may be performed in a different order than that described in the above embodiments
  • the steps described are either made separately into a plurality of integrated circuit modules, or a plurality of modules or steps are fabricated as a single integrated circuit module.
  • the base station includes:
  • At least one processor 150 is exemplified by a processor 150 in FIG. 15; a memory 151; and a communication interface 152 and a bus 153.
  • the processor 150, the memory 151, and the communication interface 152 can complete communication with each other through the bus 153.
  • the processor 150 can call the logic instructions in the memory 151 to perform the method performed by the base station (first node) in the above embodiment.
  • logic instructions in the memory 151 described above may be implemented in the form of a software functional unit and sold or used as a stand-alone product, and may be stored in a computer readable storage medium.
  • the memory 151 is a computer readable storage medium and can be used to store a software program, a computer executable program, such as a program instruction or a module corresponding to a method executed by a base station in the above embodiment.
  • the processor 150 performs the function application and the data processing by executing a software program, an instruction or a module stored in the memory 151, that is, the method performed by the base station in the above embodiment.
  • the memory 151 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application required for at least one function; the storage data area may store data created according to usage of the terminal device, and the like. Further, the memory 151 may include a high speed random access memory, and may also include a nonvolatile memory.
  • the terminal includes:
  • At least one processor 160 is exemplified by a processor 160 in FIG. 16; a memory 161; and a communication interface 162 and a bus 163.
  • the processor 160, the memory 161, and the communication interface 162 can complete communication with each other through the bus 163.
  • the processor 160 can call the logic instructions in the memory 161 to perform the method performed by the terminal (second node) in the above embodiment.
  • logic instructions in the memory 161 described above may be implemented in the form of a software functional unit and sold or used as a stand-alone product, and may be stored in a computer readable storage medium.
  • the memory 161 is a computer readable storage medium and can be used to store a software program, a computer executable program, such as a program instruction or a module corresponding to the method executed by the terminal in the above embodiment.
  • the processor 160 executes the function application and the data processing by executing a software program, an instruction or a module stored in the memory 161, that is, the method executed by the terminal in the above embodiment.
  • the memory 161 may include a storage program area and an storage data area, wherein the storage program area may store an operating system, an application required for at least one function; the storage data area may store data created according to usage of the terminal device, and the like. Further, the memory 161 may include a high speed random access memory, and may also include a nonvolatile memory.
  • the frequency domain location indication method and apparatus enable the base station to indicate the frequency domain location of the physical carrier and the frequency domain locations of other signals or other channels than the synchronization signal and the physical broadcast channel.

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Abstract

一种频域位置的指示方法包括:第一类节点向第二类节点发送载波的标记频点的位置信息,其中,所述位置信息用于指示所述载波的频域位置,以及所述载波包括虚拟载波和物理载波中的至少之一。

Description

频域位置的指示方法及装置 技术领域
本公开涉及通信领域,例如,涉及一种频域位置的指示方法及装置。
背景技术
随着无线电技术的不断进步,各种各样的无线电业务大量涌现,而无线电业务所依托的频谱资源是有限的,面对人们对带宽需求的不断增加,商业通信使用的300MHz~3GHz之间频谱资源表现出极为紧张的局面,已经无法满足未来无线通信的需求。在未来无线通信系统(例如第五代移动通信技术(the 5th mobile communication technology,5G)中,将会采用比第四代移动通信系统所采用的载波频率更高的载波频率进行通信,比如28GHz或45GHz,5G新无线接入技术(new RAT(Radio Access Technology))系统潜在工作频段达到100GHz。
物理载波中心频点(即直流频率)被放置在每个信道号(channel number)对应的频域位置上。相邻信道号之间的频率间隔被称为信道栅格(channel raster)间隔或载波栅格(carrier raster)间隔。终端搜索同步信号的频域步长被称为频率栅格(frequency raster)间隔或终端栅格(UE(User Terminal)raster)间隔。在长期演进(Long Term Evolution,LTE)系统中,终端栅格间隔与信道栅格间隔相同,即终端在所有可能的信道号对应的频域位置上搜索同步信号,图1是终端栅格与信道栅格相同时的信道结构示意图,如图1所示。
在未来无线通信系统中,由于通信的目标是支持更大的频段范围(即0~100GHz),为了更灵活地进行频谱部署,并降低终端频域搜索的复杂度,工业界提出使用更大的终端栅格间隔,即终端栅格间隔可以大于信道栅格间隔。在这种情况下,同步信号、广播信道、其它相关信号或其他相关信道的中心频点很可能与物理载波的中心频点不同。终端完成下行同步后,为与基站进行通信,需要从基站获取物理载波的频域位置以及除同步信号和物理广播信道之外的其它信号或其他信道的频域位置。
发明内容
本发明实施例提供了一种频域位置的指示方法及装置,使得基站能够指示 物理载波的频域位置和除同步信号和物理广播信道之外的其它信号或信道的频域位置。
一种频域位置的指示方法,包括:
第一类节点计算载波的标记频点的位置信息,其中,所述位置信息用于指示所述载波的频域位置,以及所述载波包括虚拟载波和物理载波中的至少之一;以及
所述第一类节点向第二类节点发送所述位置信息。
一种频域位置的指示装置,应用在基站,包括:
发送计算模块,设置为计算载波的标记频点的位置信息,其中,所述位置信息用于指示所述载波的频域位置,以及所述载波包括虚拟载波和物理载波中的至少之一;以及
发送模块,设置为向终端发送所述位置信息。
一种基站,包括:
至少一个处理器;以及
与所述至少一个处理器通信连接的存储器;其中,
所述存储器存储有可被所述至少一个处理器执行的指令,所述指令被所述至少一个处理器执行,以使所述至少一个处理器执行上述方法。
一种终端,包括:
至少一个处理器;以及
与所述至少一个处理器通信连接的存储器;其中,
所述存储器存储有可被所述至少一个处理器执行的指令,所述指令被所述至少一个处理器执行,以使所述至少一个处理器执行以下方法。
一种频域位置的指示方法,包括:
第一类节点接收第二类节点发送的载波的标记频点的位置信息,其中,所述位置信息用于指示所述载波的频域位置,以及所述载波包括虚拟载波和物理载波中的至少之一;以及
所述第一类节点根据所述位置信息,获取所述载波的标记频点的位置。
一种频域位置的指示装置,应用在终端,包括:
接收模块,设置为接收基站发送的载波的标记频点的位置信息,其中,所述位置信息用于指示所述载波的频域位置,以及所述载波包括虚拟载波和物理载波中的至少之一;以及
获取模块,设置为根据所述位置信息,获取所述载波的标记频点的位置。
一种计算机可读存储介质,存储有计算机可执行指令,所述计算机可执行指令设置为执行上述方法。
附图说明
图1是终端栅格与信道栅格相同时的信道结构示意图;
图2是根据一实施例的一种频域位置的指示方法的流程图;
图3是根据另一实施例的一种频域位置的指示方法的流程图;
图4是根据以实施例的一种频域位置的指示装置的结构框图;
图5是根据另一实施例的一种频域位置的指示装置的结构框图;
图6是根据一实施例中终端栅格比信道栅格稀疏的信道结构示意图;
图7是根据一实施例的信道结构示意图;
图8是根据另一实施例的信道结构示意图;
图9是根据另一实施例的信道分组示意图;
图10是根据另一实施例的信道结构示意图;
图11是根据另一实施例的信道结构示意图;
图12是根据另一实施例的信道结构示意图;
图13是根据另一实施例的信道结构示意图;
图14是根据另一实施例的信道结构示意图;
图15是根据一实施例的基站的结构示意图;以及
图16是根据一实施例的终端的结构示意图。
具体实施方式
说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象,而不必用于描述特定的顺序或先后次序。
图2是根据一实施例的一种频域位置的指示方法的流程图,如图2所示,该流程包括如下步骤。
步骤202中,第一类节点向第二类节点发送载波的标记频点的位置信息,其中,位置信息用于指示载波的频域位置,以及所述载波包括虚拟载波和物理载波中的至少之一。
可选的,在步骤202之前,所述方法还包括步骤201。
在步骤201中,第一节点计算载波的标记频点的位置信息。
通过上述步骤,第一类节点向第二类节点发送载波的标记频点的位置信息,其中,位置信息用于指示载波的频域位置,使得基站能够向终端指示除同步信 号和物理广播信道之外的其它信号或其他信道的频域位置(即,虚拟载波的频域位置)以及物理载波的标记频率的频域位置,以完成基站和终端之间的信息传输,解决了基站无法指示除同步信号和物理广播信道之外的其它信号或其他信道的频域位置以及物理载波的频域位置的问题。
图3是根据一实施例的一种频域位置的指示方法的流程图,如图3所示,该流程包括如下步骤。
步骤302中,第二类节点接收第一类节点发送的载波的标记频点的位置信息,其中,位置信息用于指示载波的频域位置。
可选的,在步骤302之后,所述方法还包括步骤304。
在步骤304中,第二类节点根据所述位置信息,获取所述载波的标记频点的位置。
可选地,上述步骤的第一类节点可以为基站,例如,收发节点(Transmit-Receive point,TRP)、中继节点、宏基站、微基站、微微基站、家庭基站、射频拉远或接入节点(Access point,AP)。第二类节点可以是终端或中继节点。在以下实施例中,以第一类节点以基站,第二类节点以终端为例。
可选的,标记频点的位置信息包括如下任意一项:信道号和物理资源块(Physical Resource Block,PRB)索引。
可选的,标记频点的位置信息承载在物理广播信道上,或标记频点的位置信息承载在固定的时频资源上。
在一实施例中,物理广播信道包括第一类物理广播信道和第二类物理广播信道,标记频点的位置信息承载在物理广播信道上时,所述标记频点的位置信息承载在所述第二类物理广播信道,第一类物理广播信道承载第二类物理广播信道的标记频点的位置信息。
在一实施例中,固定的时频资源包括第一类固定的时频资源和第二类固定的时频资源时,在标记频点的位置信息承载在固定的时频资源上时,所述标记频点的位置信息承载在第二类固定的时频资源,第一类固定的时频资源承载第二类固定的时频资源的标记频点的位置信息。
可选的,载波的标记频点的位置信息,也可以是相邻小区的载波的标记频点的位置信息。相邻小区的载波的标记频点的位置信息承载在第一类节点发送无线资源控制(Radio Resource Control,RRC)信今上。
可选的,载波的标记频点的位置信息,与相邻小区的载波的标记频点的位置信息相同。
可选的,虚拟载波位于物理载波带宽内,虚拟载波用于承载除同步信号和物理广播信道之外的其它信号或其他信道,如公共控制子带。虚拟载波承载的信息包括如下至少一项:用于解调随机接入响应的第一下行控制信息,用于解调系统信息的第二下行控制信息以及用于解调寻呼消息的第三下行控制信息。
可选的,所述信道号包括如下一项或多项:当前频域位置对应的一组信道号中的一个或者多个;相对于当前频域位置的相对信道号中的一个或者多个;相对于当前频域位置的相对信道号中的一个或者多个以及左右偏移指示;相对于当前频域位置的相对信道组索引中的一个或者多个以及组内信道索引;以及相对于当前频域位置的相对信道组索引中的一个或者多个以及组内信道索引和左右偏移指示。
可选的,所述相对信道号指以信道栅格间隔为单位,相对于当前频域位置的偏移量。可选的,所述相对信道组索引指以一组信道栅格间隔为单位,相对于当前频域位置的偏移量。
在一实施例中,所述PRB索引包括如下一项:
相对于当前频域位置的相对PRB索引中的一个或者多个;或者,
相对于当前频域位置的相对PRB索引中的一个或者多个以及左右偏移指示;
相对于当前频域位置的相对PRB组索引中的一个或者多个以及组内PRB索引;以及
相对于当前频域位置的相对PRB组索引中的一个或者多个以及组内PRB索引和左右偏移指示。
可选的,所述相对PRB索引指以PRB带宽为单位,相对于当前频域位置的偏移量。可选的,所述相对PRB组索引指以一组PRB带宽为单位,相对于当前频域位置的偏移量。
在一实施例中,所述左右偏移指示用于指示所述标记频点的位置相对于当前频域位置偏低还是偏高。
在一实施例中,所述当前频域位置是指同步信号的标记频点位置,或者物理广播信道的标记频点位置,或者同步信号块(Synchronization signal block,SSblock)(同步信号块是包含同步信号的时频资源块)的标记频点位置,或者同步 信号对应的终端栅格的频域位置,或者一个终端栅格的频域位置,或者固定时频资源的标记频点位置。
可选的,终端栅格的频域位置为信道栅格的频域位置的子集,或者终端栅格的频域位置与信道栅格的频域位置完全不同,或者一部分终端栅格的频域位置为信道栅格的频域位置的子集,另一部分终端栅格的频域位置与信道栅格的频域位置完全不同。
可选的,标记频点包括如下任意一项:中心频点,左边界频点,下边界频点,右边界频点以及上边界频点。
可选的,当标记频点的位置信息包括信道号时,标记频点的位置信包括:以同步信号的子载波间隔为单位,相对于标记频点的位置信息中指示的信道号或者相对信道号或者组内信道索引对应的频域位置向左或向右的偏移量。
可选的,当标记频点的位置信息包括PRB索引时,标记频点的位置信息包括:PRB内的子载波索引或者组内PRB内的子载波索引。
在一实施例中,所述信道栅格(信道栅格间隔)为如下任意一项:LTE信道栅格(100kHz)与LTE的子载波间隔(15kHz)的最小公倍数乘以2的M次幂;LTE信道栅格(100kHz)与同步信号的子载波间隔(比如15kHz乘以2的M次幂)的最小公倍数;LTE信道栅格(100kHz)与当前频段范围对应的最大子载波间隔的最小公倍数;LTE信道栅格(100kHz)与LTE的子载波间隔(15kHz)的最小公倍数的N倍;LTE信道栅格(100kHz)与同步信号的PRB(比如12乘以15kHz乘以2的M次幂)的最小公倍数的N倍;同步信号的子载波间隔(比如15kHz乘以2的M次幂)的N倍;同步信号的PRB(比如12乘以15kHz乘以2的M次幂)的N倍;以及当前频段范围对应的最大子载波间隔的N倍。其中,M为非负整数,N为正整数。
上述实施例的方法可借助软件加通用硬件平台的方式来实现,也可以通过硬件的方式来实现。上述实施例的技术方案可以以软件产品的形式体现出来,该计算机软件产品存储在一个存储介质(如只读存储器(Read-Only Memory,ROM)、随机存取存储器(Random Access Memory,RAM)、磁碟、光盘)中,包括一个或多个指令用以使得一台终端设备(可以是手机,计算机,服务器或者网络设备)执行上述实施例的方法。
以下实施例提供了一种频域位置的指示装置,该装置可以实现上述实施例 中的方法。以下所使用的术语“模块”可以实现预定功能的软件和硬件中的至少之一。以下实施例所描述的装置可以以软件、硬件、或者软件和硬件的组合方式实现。
图4是根据一实施例的一种频域位置的指示装置的结构框图,应用在基站中,如图4所示,该装置包括计算模块40和发送模块41。计算模块40设置为计算载波的标记频点的位置信息,其中,所述位置信息用于指示所述载波的频域位置,其中,所述载波包括虚拟载波和物理载波中的至少之一。发送模块41设置为向终端发送所述位置信息。
图5是根据一实施例的一种频域位置的指示装置的结构框图,应用在终端,如图5所示,该装置包括:接收模块50和获取模块51。接收模块50设置为接收基站发送的载波的标记频点的位置信息,其中,所述位置信息用于指示所述载波的频域位置。获取模块51设置为根据所述位置信息,获取所述载波的标记频点的位置。
可选的,所述标记频点的位置信息包括以下之一:信道号以及相对物理资源块PRB索引。
可选的,信道栅格为以下之一:长期演进(Long-Term Evolution,简称为LTE)信道栅格与LTE的子载波间隔的最小公倍数乘以2的非负整数次幂;LTE信道栅格与同步信号的子载波间隔的最小公倍数;LTE信道栅格与当前频段范围对应的最大子载波间隔的最小公倍数;LTE信道栅格与LTE的子载波间隔的最小公倍数的N倍;LTE信道栅格与同步信号的PRB的最小公倍数的N倍;同步信号的子载波间隔的N倍;同步信号的PRB的N倍;以及当前频段范围对应的最大子载波间隔的N倍;其中,N为正整数。
上述模块是可以通过软件或硬件来实现的,对于硬件实现方式可以通过以下方式实现:上述模块均位于同一处理器中;或者,上述模块以任意组合的形式分别位于不同的处理器中。
在以下实施例的描述中,信道栅格间隔(即,信道栅格)是指相邻信道号之间的频率间隔,终端栅格间隔(即,终端栅格)是指终端搜索同步信号的频域步长。终端栅格的频域位置指进行初始接入时终端进行频域搜索的频点。左右偏移指示为基站通知的所述频域位置相对于当前频域位置偏低还是偏高,即基站通知的所述频域位置在当前频域位置的左侧还是右侧。
一实例中,在低频段(例如6GHz以下),未来无线通信系统(例如5G)中的信道栅格定义为100kHz,终端栅格为信道栅格的N倍,N为正整数。
信道栅格配置为100kHz,能够灵活地调整相邻载波之间的邻信道泄漏功率比。当未来无线通信系统重耕(refarming)LTE频谱时,100kHz的信道栅格依然能够灵活地调整相邻载波之间的邻信道泄漏功率比,而且避免了额外的频谱规划。终端栅格为信道栅格的N倍,当N大于1时,与LTE相比可以降低终端频域搜索的复杂度。终端栅格也可以为100kHz的正整数倍,不一定为信道栅格的倍数。
在高频段(例如6GHz以上),未来无线通信系统的信道栅格定义为:
LTE信道栅格(100kHz)与LTE的子载波间隔(15kHz)的最小公倍数乘以2的M次幂;或者,
LTE信道栅格(100kHz)与同步信号的子载波间隔(比如15kHz乘以2的M次幂(即,15×2M))的最小公倍数;或者,
LTE信道栅格(100kHz)与当前频段范围对应的最大子载波间隔(比如当前频段范围支持3种子载波间隔60、120和240kHz时,最大子载波间隔为240kHz)的最小公倍数;或者,
LTE信道栅格(100kHz)与LTE的子载波间隔(15kHz)的最小公倍数的N倍;或者,
LTE信道栅格(100kHz)与同步信号的PRB(比如12乘以15kHz乘以2的M次幂(即,12×15×2M))的最小公倍数的N倍;或者,
同步信号的子载波间隔(比如15kHz乘以2的M次幂)的N倍;或者,
同步信号的PRB(比如12乘以15kHz乘以2的M次幂)的N倍;
当前频段范围对应的最大子载波间隔的N倍。
其中,M非负整数,N为正整数。
终端栅格可以为信道栅格的倍数,也可以采用上述信道栅格的选取方法的任意一种。
在高频段,未来无线通信系统为满足多种业务需求,需要支持多种子载波间隔,子载波间隔范围至少从3.75kHz至480kHz。因此信道栅格也应该相应的变化,通过适当地选取M和N,上述信道栅格和终端栅格配置都可以使得同步信号的中心子载波位于物理载波的一个子载波上(即与物理载波的一个子载波 重合),这样同步信号的资源网络与物理载波的资源网格是一致,可以提高频谱资源的利用效率和终端进行同步信号检测的性能。
当终端栅格为信道栅格的正整数倍时,可以使得终端栅格的频域位置总是位于一个信道栅格位置上,使得系统的设计更简单。
当信道栅格是100kHz的倍数时,终端栅格是信道栅格的正整数倍,即终端栅格是100kHz的倍数,这种配置使得支持LTE和未来无线通信系统的双模终端可以共用一个频率合成器,可以降低终端成本。
在未来无线通信系统中,由于终端栅格比信道栅格更稀疏,因此,多个信道的同步信号可能在同一个终端栅格上发送,图6是根据一实施例中终端栅格比信道栅格稀疏的信道结构示意图,如图6所示,信道0和1对应的同步信号在终端栅格位置(终端栅格的频域位置)0上发送,信道2和3对应的同步信号在终端栅格位置1上发送。
每个终端栅格位置对应多个信道号,因此需要指示所述同步信号对应哪个或哪些信道,或者指示所述同步信号对应的物理载波的标记频点的位置以及指示所述同步信号对应的虚拟载波的标记频点的位置。其中,虚拟载波可以位于物理载波带宽内,虚拟载波用于承载除同步信号和物理广播信道之外的其它信号或其他信道,如公共控制子带。
标记频点包括如下任意一项:中心频点,左边界频点,下边界频点,右边界频点以及上边界频点。图6以终端栅格位置为信道栅格位置的子集为例进行说明。可选的,终端栅格位置还可以与信道栅格位置(信道栅格的频域位置)完全不同。可选的,一部分终端栅格位置为信道栅格位置的子集,另一部分终端栅格位置与信道栅格位置完全不同。
一实例给出了利用信道号或者相对信道号指示载波(虚拟载波或者物理载波)的中心频点的方法。
在一实例中,终端栅格为信道栅格的N倍(例如N为3),假设每个终端栅格对应K个信道号,即,K个信道对应的物理载波在该终端栅格处发送同步信号,编号分别为1到K,所述K个信道号与实际的信道号之间的对应关系是预定义的,或者由RRC信今指示的。物理载波的中心频点是信道号为(3m+1)的信道栅格对应的频域位置,虚拟载波的中心频点是信道号为(3m+3)的信道栅格对应的频域位置,同步信号的中心频点是信道号为(3n)的信道栅格对应的 频域位置,图7是一实施例的信道结构示意图,如图7所示。
下面先以指示物理载波的中心频点的位置信息为例对指示方法进行说明。
基站发送物理载波的中心频点的位置信息,所述位置信息可以承载在物理广播信道上,信息内容包括:
物理载波的中心频点对应的信道号(3m+1),以及所述位置信息占用的比特数为大于log2M的最小整数,其中M为无线通信系统的最大信道号;或者
物理载波的中心频点对应的信道号k,以及所述位置信息占用的比特数为大于log2K的最小整数;或者
物理载波的中心频点对应的相对信道号s(例如,K(K为奇数)个信道相对同步信号的中心频点的相对信道号,K为奇数时相对信道号分别为
Figure PCTCN2017115799-appb-000001
Figure PCTCN2017115799-appb-000002
......,s,......,
Figure PCTCN2017115799-appb-000003
其中,
Figure PCTCN2017115799-appb-000004
为向下取整符号,/为除法运算符,K为偶数时相对信道号分别为-K/2+1,...,0,1,......,s,......,K/2,或者为-K/2,...,0,1,......,s,......,K/2-1),以及所述信息占用的比特数为大于log2K的最小整数;或者
物理载波的中心频点对应的相对信道号(即,物理载波的中心频点相对同步信号的中心频点的频移量)以及左右偏移指示(如,1比特)。例如,以信道栅格为单位,偏移量为(3m+1-3n),因此,所述位置信息占用的比特数为(大于log2K1的最小整数+1),其中,以信道栅格为单位,K1是物理载波的中心频点相对同步信号的中心频点的最大偏移量,所述最大偏移量可由网络预先配置。
终端可以接收物理载波的中心频点的位置信息,从而获得物理载波的中心频点的位置。
如果物理载波的中心频点恰好在信道对应的频域位置上,即,物理载波的中心频点相对于信道号或者相对信道号对应的频域位置的偏移量(同步信号的子载波数)为0,可以把0看成一个特殊的偏移量。为了使标准统一,所述位置信息也可以包括相对于信道号(3m+1)或者相对信道号(3m+1-3n),以同步信号的子载波间隔为单位向左或向右的偏移量。以下实例涉及到偏移量为0时,省略了偏移量的通知,为了使标准统一,也可以在所述位置信息中包含所述偏移量。
上述方法也适用于基站向终端指示虚拟载波的中心频点的位置。区别在于,虚拟载波的中心频点所在信道与物理载波不同(图7中虚拟载波的中心频点位 于信道(3m+3))。
一实例给出了利用信道号指示虚拟载波和物理载波的左边界频点(或者下边界频点)、中心频点或右边界频点(或者上边界频点)的方法。
图8是一实施例的信道结构示意图,如图8所示,物理载波的中心频点是信道(3m+1)对应的频域位置,同步信号的中心频点是信道3n对应的频域位置,虚拟载波的中心频点位于信道(3m+2)和(3m+3)之间。
以指示虚拟载波的左边界频点(或者下边界频点)的位置为例对指示方法进行说明。基站发送虚拟载波的左边界频点(或者下边界频点)的位置信息,所述位置信息可以承载在物理广播信道上,所述位置信息包括:
虚拟载波的左边界频点(或者下边界频点)对应的信道号(例如选择距离虚拟载波的左边界频点左侧最近的信道号(3m+1)),由于虚拟载波的左边界频点与信道(3m+1)对应的频域位置有偏差,因此,所述位置信息还可以包括相对信道号(3m+1),以同步信号的子载波间隔为单位向右的偏移量,例如偏移量为X个子载波。
因此所述位置信息占用的比特数可以包括两部分,一部分是信道号占用的比特数(大于log2M的最小整数,其中M为无线通信系统的最大信道号),以及另一部分是相对于位置信息中指示的信道号的偏移量占用的比特数(大于log2L的最小整数,其中L为信道栅格间隔包含的子载波数目)。所述位置信息占用的比特数可以为两部分占用的比特数之和。
终端接收虚拟载波的左边界频点(或者下边界频点)的位置信息,从而获得虚拟载波的左边界频点(或者下边界频点)的位置,即信道(3m+1)所在的频率,以及相对信道(3m+1的频率偏移)(即上频率偏移量与同步信号子载波间隔的乘积)。
在上述实例中,所述位置信息中虚拟载波的左边界频点(或者下边界频点)对应的信道号,也可以选择距离虚拟载波的左边界频点右侧最近的信道号(3m+2),所述位置信息还可以包括相对信道号(3m+2),以同步信号的子载波间隔为单位向左的偏移量(例如,偏移量为Y个子载波)。
终端接收虚拟载波的左边界频点(或者下边界频点)的位置信息,可以获得虚拟载波的左边界频点(或者下边界频点)的位置,即信道(3m+2)所在的频率,减去相对信道(3m+2)的频率偏移,即减去频率偏移量与同步信号子载 波间隔的乘积。选择距离虚拟载波的左边界频点(或者下边界频点)左侧还是右侧最近的信道号由标准提前规定好,或者,可以额外增加1比特信息用于指示选择距离虚拟载波的左边界频点(或者下边界频点)左侧还是右侧最近的信道号。
上述方法也适用于基站向终端指示虚拟载波的中心频点,或者右边界频点(或者上边界频点)的位置,同时基站向终端指示物理载波的左边界频点(或者下边界频点),或者中心频点,或者右边界频点(或者上边界频点)的位置,也可以使用上述方法。
当无线通信系统的最大信道号较大时,利用信道号指示载波(虚拟载波和物理载波中的至少之一)的标记频点的位置的资源开销大,例如,LTE中的F频段的绝对频点数38350,即最大信道数为38350,因此需要16比特来表示信道号,资源开销大。一实例给出了利用相对信道号指示虚拟载波和物理载波的左边界频点(或者下边界频点)、中心频点或右边界频点(或者上边界频点)的指示方法。
以指示虚拟载波的左边界频点(或者下边界频点)的位置为例对指示方法进行说明。本实施例与上述图8所在实例的区别是:所述位置信息中的信道号替换为相对信道号,例如,替换为距离虚拟载波的左边界频点(或者下边界频点)左侧最近的相对信道号(3m+1-3n)。由于是相对信道号,因此所述位置信息中还可以包括左右偏移指示,例如用1比特信息表示-1和1,其中,-1表示虚拟载波的左边界频点(或者下边界频点)在同步信号的中心频点的左侧,1表示虚拟载波的左边界频点(或者下边界频点)在同步信号的中心频点的右侧,所述位置信息还可以包括相对于相对信道号(3m+1-3n),以同步信号的子载波间隔为单位向右的偏移量,例如偏移量为X个子载波。
所述位置信息占用的比特数的计算方法与上述图8所在实例中的计算方法相同,所述位置信息占用的比特数的一部分是相对信道号占用的比特数(大于log2M的最小整数,其中M为无线通信系统的最大信道号,M代表的是虚拟载波的左边界频点(或者下边界频点)相对同步信号的中心频点的以信道栅格为单位的最大偏移量,即最大相对信道号)。所述位置信息占用的比特数的另一部分是相对于位置信息中指示的相对信道号的偏移量占用的比特数(大于log2L的最小整数,其中L为信道栅格间隔包含的子载波数目)。所述位置信息占用的比 特数为两部分占用的比特数之和。
在上述方法中所述位置信息中虚拟载波的左边界频点(或者下边界频点)对应的相对信道号,也可以选择距离虚拟载波的左边界频点右侧最近的相对信道号(3m+2-3n)。指示方法与选择距离虚拟载波的左边界频点(或者下边界频点)左侧最近的相对信道号(3m+1-3n)可以一样。选择距离虚拟载波的左边界频点(或者下边界频点)左侧还是右侧最近的相对信道号由标准提前规定好,或者,可以额外增加1比特信息用于指示选择距离虚拟载波的左边界频点(或者下边界频点)左侧还是右侧最近的相对信道号。
上述方法中,基站向终端指示虚拟载波的左边界频点(或者下边界频点)的方法,也适用于基站向终端指示虚拟载波的中心频点,或者右边界频点(或者上边界频点)的位置。基站向终端指示物理载波的左边界频点(或者下边界频点),或者中心频点,或者右边界频点(或者上边界频点)的位置,也可以使用上述方法。
一实施例中,终端栅格比信道栅格更稀疏(即,终端栅格间隔比信道栅格间隔大),当终端栅格大时,即使用相对信道号来是指示载波(虚拟载波或者物理载波)的标记频点的位置,可能也需要大的资源开销,因此本实例中将信道分组,以信道组或者相对信道组的方法来指示载波(虚拟载波或者物理载波)的标记频点的位置。例如,子载波间隔为480kHz,PRB的带宽为12*480=5760kHz,假设终端栅格是PRB的倍数,则终端栅格最小为5760kHz。
图9是一实施例的信道分组示意图一,如图9所示一实施例中,使用信道组索引指示载波(虚拟载波或者物理载波)的标记频点的位置,分组方法包括:将所有的信道按照编号,每M个连续信道一组,依次分组(分组数与信道总数有关,且最后一个组包含的信道数小于或等于M)。
当信道数量多时,使用信道组索引指示可能也需要大的资源开销,可以使用相对信道组来减小资源开销。即,使用相对信道组索引来指示虚拟载波或者物理载波的标记频点的位置,其中,相对信道组索引表示以信道组为单位相对于同步信号的中心频点的偏移量,分组方法为:从同步信号的中心频点所在的信道开始,向左或者向右依次将M个连续的信道分为一组,同步信号的中心频点所在的信道是否包含第一个信道组里取决于实现。
图10是根据一实施例的信道结构示意图,如图10所示,按照上述分组方 式,组内信道索引与信道组包含的信道数有关,按照上述分组方式,组内信道索引为0,1,......,M-1。
下面给出利用信道组索引指示虚拟载波的中心频点的方法。
图11是根据一实施例的信道结构示意图,如图11所示,终端栅格为信道栅格的N倍(例如N为((m+1)M一1)/n),虚拟载波的中心频点位于信道((m+2)M-1)。
下面先以指示虚拟载波的中心频点的位置为例对指示方法进行说明。
基站发送虚拟载波的中心频点的位置信息,所述位置信息可以承载在物理广播信道上,所述位置信息包括:虚拟载波的中心频点对应的信道组索引(例如,m+1),组内信道索引(例如,M-1)。
终端接收虚拟载波的中心频点的位置信息,可以获得虚拟载波的中心频点的位置。
当虚拟载波的中心频点与组内信道索引(例如M-1)对应的频域位置与偏差时,则所述位置信息还可以包含:以同步信号的子载波间隔为单位,相对于组内信道索引对应的频域位置的偏移量。此时选取距离虚拟载波的中心频点左侧或右侧最近的组内信道索引取决于实现,实现方案可以参考图8所在实例。
下面给出利用相对信道组索引指示虚拟载波的中心频点的方法。
图12是根据一实施例的信道结构示意图,下面以指示虚拟载波的中心频点的位置为例对指示方法进行说明。
基站发送虚拟载波的中心频点的位置信息,所述位置信息可以承载在物理广播信道上,所述位置信息包括:虚拟载波的中心频点对应的相对信道组索引(例如k),组内信道索引(例如x),以及左右偏移指示。其中,左右偏移指示用于指示虚拟载波的中心频点在同步信号的中心频点的左侧还是右侧,例如用1比特信息表示-1和1,分别表示虚拟载波的中心频点在同步信号的中心频点的左侧和右侧。
终端接收虚拟载波的中心频点的位置信息,可以获得虚拟载波的中心频点的位置。
当虚拟载波的中心频点与组内信道索引(例如x)对应的频域位置与偏差时,则所述位置信息还可以包含:以同步信号的子载波间隔为单位,相对于组内信道索引对应的频域位置的偏移量。此时选取距离虚拟载波的中心频点左侧或右 侧最近的组内信道索引取决于实现,实现方案可以参考图8所在实例。
上述实施例中,基站向终端指示虚拟载波的中心频点的方法,也适用于基站向终端指示虚拟载波的左边界频点(或者下边界频点),或者右边界频点(或者上边界频点)的位置,基站向终端指示物理载波的左边界频点(或者下边界频点),或者中心频点,或者右边界频点(或者上边界频点)的位置,也可以使用上述方法。
以下实例给出了相对PRB索引指示虚拟载波或者物理载波的标记频点的位置的方法。由于未来无线通信系统可以支持高达480kHz的子载波间隔,第五代移动通信系统已经初步确定PRB包含的子载波数为12个,即PRB带宽高达5760kHz,PRB带宽很可能大于信道栅格间隔,当终端栅格较大时,用PRB索引或者PRB组索引可以减小指示资源开销。
一实例给出了采用相对PRB索引指示虚拟载波的标记频点的位置的方法。
图13是一实施例的信道结构示意图,如图13所示,虚拟载波的中心频点恰好在PRB的边界,左边界频点(或者下边界频点)和右边界频点(或者上边界频点)都不在PRB的边界。下面以指示虚拟载波的中心频点的位置为例对指示方法进行说明。
基站发送虚拟载波的中心频点的位置信息,所述位置信息可以承载在物理广播信道上,所述位置信息包括:虚拟载波的中心频点对应的PRB索引(例如m)以及左右偏移指示。
终端接收虚拟载波的中心频点的位置信息,可以获得虚拟载波的中心频点的位置。
假设基站指示虚拟载波的左边界频点(或者下边界频点)或者右边界频点(或者上边界频点),则所述位置信息除了包含虚拟载波的中心频点对应的PRB索引(例如m)和左右偏移指示外,还可以包括PRB内子载波索引。终端接收虚拟载波的中心频点的位置信息,可以获得虚拟载波的中心频点的位置。为了使标准统一,上述虚拟载波的中心频点的位置信息中也可以包含PRB内子载波索引,PRB内的子载波索引可以是固定的,即PRB内的最后一个子载波。
上述方法,也适用于基站向终端指示物理载波的左边界频点(或者下边界频点),或者中心频点,或者右边界频点(或者上边界频点)的位置。
一实例给出了用相对PRB组索引指示虚拟载波的标记频点的位置的方法。
图14是根据一实施例的信道结构示意图,如图14所示,每个PRB组包含M个PRB,且虚拟载波的中心频点在同步信号中心频点的左侧。下面以指示虚拟载波的中心频点的位置为例对指示方法进行说明。
基站发送虚拟载波的中心频点的位置信息,所述位置信息可以承载在物理广播信道上,所述位置信息包括:虚拟载波的中心频点对应的相对PRB组索引(例如k),组内PRB索引,组内PRB内的子载波索引以及左右偏移指示(例如,用1比特信息表示左右偏移,这里取值为-1,表示向左偏移)。
终端接收虚拟载波的中心频点的位置信息,从而获得虚拟载波的中心频点的位置。
上述方法,也可适用于基站向终端指示虚拟载波的左边界频点(或者下边界频点),或者右边界频点(或者上边界频点)的位置,以及物理载波的左边界频点(或者下边界频点),或者中心频点,或者右边界频点(或者上边界频点)的位置。
一实例给出了基站向本小区终端指示相邻小区的虚拟载波和物理载波中的至少之一的标记频点的位置的方法。
基站使用无线资源控制(Radio Resource Control,RRC)信今发送相邻小区的虚拟载波和物理载波中的至少之一的标记频点的位置信息,所述位置信息可以参见上述实例。所述RRC信今可以通过广播方式发送(例如通过系统信息发送),或者组播方式发送(例如发送给一组终端),或者单播方式发送(例如发送给特定终端)。
可选的,当前小区和相邻小区的虚拟载波(或物理载波)的标记频点的位置相同。
可选的,所述物理广播信道分为第一类物理广播信道和第二类物理广播信道,所述物理广播信道指第二类物理广播信道,第一类物理广播信道承载第二类物理广播信道的标记频点的位置信息。所述第一类物理广播信道可以与同步信号具有固定的时频位置关系,例如所述第一类物理广播信道与同步信号具有相同的中心频点和带宽。
上述所有实例中的物理广播信道也可适用于固定的时频资源,上述所有实例中的物理广播信道都可以替换为固定的时频资源。
一实例中,当标记频点的位置信息与当前频域位置相同时,相对信道号(或 者相对信道组索引,或者相对PRB索引,或者相对PRB组索引)可以为0。
一实例中,终端栅格和信道栅格的起始位置可以相同。
一实例中,当终端可以获得终端栅格对应的K个信道号与实际的信道号之间的对应关系(预定义,或者由RRC信今指示)时,所述位置信息也可以仅包含信道号,或者相对信道号,或者相对信道组索引以及组内信道索引,或者相对PRB索引,或者相对PRB组索引以及组内PRB索引。
一实例以基站向终端指示终端栅格对应的一个信道为例,基站向终端指示终端栅格对应的多个信道时,指示位置信息时可以采用上述实施例中的方法。
可选的,当前频域位置为其他(例如同步信号的标记频点位置,或者物理广播信道的标记频点位置,或者同步信号块的标记频点位置,或者同步信号对应的终端栅格的频域位置,或者一个终端栅格的频域位置)时的情况,可与当前频域位置为同步信号的中心频点(或者左边界频点(或者下边界频点),或者右边界频点(或者上边界频点))的情况相同。当前频域位置不在信道栅格位置上的情况可与当前频域位置在信道栅格位置上情况相同。
上述方案给出的频域资源指示方法,使得基站能够向终端指示物理载波的标记频率的频域位置以及除同步信号和物理广播信道之外的其它信号或其他信道,以完成基站和终端之间的信息传输。
一实例提供了一种存储介质。可选地,存储介质可以被设置为存储用于执行以下步骤的程序代码:
向第二类节点发送载波的标记频点的位置信息,其中,所述位置信息用于指示所述载波的频域位置,所述载波包括虚拟载波和物理载波中的至少之一。
可选地,上述存储介质可以包括U盘、ROM、RAM、移动硬盘、磁碟或者光盘等多种可以存储程序代码的介质。
可选地,处理器根据存储介质中已存储的程序代码执行向第二类节点发送载波的标记频点的位置信息,其中,所述位置信息用于指示所述载波的频域位置。
上述的模块或步骤可以用计算装置来实现,它们可以集中在单个的计算装置上,或者分布在多个计算装置所组成的网络上,可选地,它们可以用计算装置可执行的程序代码来实现,从而,可以将它们存储在存储装置中由计算装置来执行,并且在一些情况下,可以以不同于上述实施例中的顺序执行所示出或 描述的步骤,或者将它们分别制作成多个集成电路模块,或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。
一实施例提供了一种基站的硬件结构示意图。参见图15,该基站包括:
至少一个处理器(processor)150,图15中以一个处理器150为例;存储器(memory)151;还可以包括通信接口(Communications Interface)152和总线153。其中,处理器150、存储器151以及通信接口152可以通过总线153完成相互间的通信。处理器150可以调用存储器151中的逻辑指令,以执行上述实施例中基站(第一节点)执行的方法。
此外,上述的存储器151中的逻辑指令可以通过软件功能单元的形式实现并作为独立的产品销售或使用时,可以存储在一个计算机可读取存储介质中。
存储器151作为一种计算机可读存储介质,可用于存储软件程序、计算机可执行程序,如上述实施例中基站执行的方法对应的程序指令或模块。处理器150通过运行存储在存储器151中的软件程序、指令或模块,从而执行功能应用以及数据处理,即实现上述实施例中基站执行的方法。
存储器151可包括存储程序区和存储数据区,其中,存储程序区可存储操作系统、至少一个功能所需的应用程序;存储数据区可存储根据终端设备的使用所创建的数据等。此外,存储器151可以包括高速随机存取存储器,还可以包括非易失性存储器。
一实施例提供了一种终端的硬件结构示意图。参见图16,该终端包括:
至少一个处理器(processor)160,图16中以一个处理器160为例;存储器(memory)161;还可以包括通信接口(Communications Interface)162和总线163。其中,处理器160、存储器161以及通信接口162可以通过总线163完成相互间的通信。处理器160可以调用存储器161中的逻辑指令,以执行上述实施例中终端(第二节点)执行的方法。
此外,上述的存储器161中的逻辑指令可以通过软件功能单元的形式实现并作为独立的产品销售或使用时,可以存储在一个计算机可读取存储介质中。
存储器161作为一种计算机可读存储介质,可用于存储软件程序、计算机可执行程序,如上述实施例中终端执行的方法对应的程序指令或模块。处理器160通过运行存储在存储器161中的软件程序、指令或模块,从而执行功能应用以及数据处理,即实现上述实施例中终端执行的方法。
存储器161可包括存储程序区和存储数据区,其中,存储程序区可存储操作系统、至少一个功能所需的应用程序;存储数据区可存储根据终端设备的使用所创建的数据等。此外,存储器161可以包括高速随机存取存储器,还可以包括非易失性存储器。
工业实用性
频域位置的指示方法及装置使基站能够指示物理载波的频域位置和除同步信号和物理广播信道之外的其它信号或其他信道的频域位置。

Claims (43)

  1. 一种频域位置的指示方法,包括:
    第一类节点计算载波的标记频点的位置信息,其中,所述位置信息用于指示所述载波的频域位置,以及所述载波包括虚拟载波和物理载波中的至少之一;以及
    所述第一类节点向第二类节点发送所述位置信息。
  2. 根据权利要求1所述的方法,其中,所述标记频点的位置信息包括以下之一:信道号和物理资源块PRB索引。
  3. 根据权利要求1所述的方法,其中,所述位置信息承载在物理广播信道上或承载在固定的时频资源上。
  4. 根据权利要求3所述的方法,其中,所述物理广播信道包括第一类物理广播信道和第二类物理广播信道,在所述标记频点的位置信息承载在物理广播信道上时,所述标记频点的位置信息承载在所述第二类物理广播信道,所述第一类物理广播信道承载所述第二类物理广播信道的标记频点的位置信息。
  5. 根据权利要求3所述的方法,其中,所述固定的时频资源分为第一类固定的时频资源和第二类固定的时频资源,在所述标记频点的位置信息承载在固定的时频资源上时,所述标记频点的位置信息承载在所述第二类固定的时频资源,所述第一类固定的时频资源承载所述第二类固定的时频资源的标记频点的位置信息。
  6. 根据权利要求1所述的方法,其中,所述载波包括:所述第一类节点的相邻小区的载波,其中,所述相邻小区的载波的标记频点的位置信息承载在所述第一类节点发送的无线资源控制RRC信令上。
  7. 根据权利要求1或6所述的方法,其中,所述第一类节点的载波的标记频点的位置信息,与相邻小区的载波的标记频点的位置信息相同。
  8. 根据权利要求1所述的方法,其中,所述虚拟载波位于物理载波带宽内,所述虚拟载波用于承载除同步信号和物理广播信道之外的其它信号或其它信道,其中,所述虚拟载波承载的信息包括以下至少之一:用于解调随机接入响应的第一下行控制信息,用于解调系统信息的第二下行控制信息以及用于解调寻呼消息的第三下行控制信息。
  9. 根据权利要求2所述的方法,其中,所述信道号包括以下之一:
    当前频域位置对应的一组信道号中的一个或者多个;
    相对于当前频域位置的相对信道号中的一个或者多个;
    相对于当前频域位置的相对信道号中的一个或者多个以及左右偏移指示;
    相对于当前频域位置的相对信道组索引中的一个或者多个以及组内信道索引;以及
    相对于当前频域位置的相对信道组索引中的一个或者多个以及组内信道索引和左右偏移指示。
  10. 根据权利要求9所述的方法,其中,所述相对信道号和所述相对信道组索引满足以下至少之一:
    所述相对信道号为以信道栅格间隔为单位,相对于所述当前频域位置的偏移量,和,所述相对信道组索引为以一组信道栅格间隔为单位,相对于所述当前频域位置的偏移量。
  11. 根据权利要求2所述的方法,其中,所述PRB索引包括以下之一:
    相对于当前频域位置的相对PRB索引中的一个或者多个;
    相对于当前频域位置的相对PRB索引中的一个或者多个以及左右偏移指示;
    相对于当前频域位置的相对PRB组索引中的一个或者多个以及组内PRB索引;以及
    相对于当前频域位置的相对PRB组索引中的一个或者多个以及组内PRB索引和左右偏移指示。
  12. 根据权利要求11所述的方法,其中,所述相对PRB索引和所述相对PRB组索引满足以下至少之一:
    所述相对PRB索引为以PRB带宽为单位,相对于当前频域位置的偏移量,和,
    所述相对PRB组索引为以一组PRB带宽为单位,相对于当前频域位置的偏移量。
  13. 根据权利要求9或11所述的方法,其中,所述左右偏移指示用于指示所述标记频点的位置相对于所述当前频域位置偏低还是偏高。
  14. 根据权利要求9或11所述的方法,其中,所述当前频域位置包括以下至少之一:同步信号的标记频点位置,物理广播信道的标记频点位置,同步信号块的标记频点位置,同步信号对应的终端栅格的频域位置,终端栅格的频域位置以及固定时频资源的标记频点位置。
  15. 根据权利要求14所述的方法,其中,终端栅格的频域位置为信道栅格的频域位置的子集,或者,终端栅格的频域位置与信道栅格的频域位置完全不同,或者,一部分终端栅格的频域位置为信道栅格的频域位置的子集,另一部分终端栅格的频域位置与信道栅格的频域位置完全不同。
  16. 根据权利要求15所述的方法,其中,所述信道栅格为以下之一:
    长期演进LTE信道栅格与LTE的子载波间隔的最小公倍数乘以2的非负整数次幂;
    LTE信道栅格与同步信号的子载波间隔的最小公倍数;
    LTE信道栅格与当前频段范围对应的最大子载波间隔的最小公倍数;
    LTE信道栅格与LTE的子载波间隔的最小公倍数的N倍;
    LTE信道栅格与同步信号的PRB的最小公倍数的N倍;
    同步信号的子载波间隔的N倍;
    同步信号的PRB的N倍;以及
    当前频段范围对应的最大子载波间隔的N倍;其中,N为正整数。
  17. 根据权利要求1所述的方法,其中,所述标记频点包括以下之一:中心频点,左边界频点,下边界频点,右边界频点以及上边界频点。
  18. 根据权利要求2所述的方法,其中,当所述标记频点的位置信息包括信道号时,所述标记频点的位置信息还包括:
    以同步信号的子载波间隔为单位,相对于所述标记频点的位置信息中指示的信道号对应的频域位置向左或向右的偏移量,或者
    所述标记频点的位置信息中指示的相对信道号对应的频域位置向左或向右的偏移量,或者
    所述标记频点的位置信息中指示的组内信道索引对应的频域位置向左或向右的偏移量。
  19. 根据权利要求2所述的方法,其中,当所述标记频点的位置信息包括PRB索引时,所述标记频点的位置信息还包括:PRB内的子载波索引或者组内PRB内的子载波索引。
  20. 一种频域位置的指示方法,包括:
    第一类节点接收第二类节点发送的载波的标记频点的位置信息,其中,所述位置信息用于指示所述载波的频域位置,以及所述载波包括虚拟载波和物理载波中的至少之一;以及
    所述第一类节点根据所述位置信息,获取所述载波的标记频点的位置。
  21. 根据权利要求20所述的方法,其中,所述标记频点的位置信息至少包括以下之一:信道号以及物理资源块PRB索引。
  22. 根据权利要求20所述的方法,其中,所述位置信息承载在物理广播信道上或承载在固定的时频资源上。
  23. 根据权利要求22所述的方法,其中,所述物理广播信道包括第一类物理广播信道和第二类物理广播信道,在所述标记频点的位置信息承载在物理广播信道上时,所述标记频点的位置信息承载在所述第二类物理广播信道,所述第一类物理广播信道承载所述第二类物理广播信道的标记频点的位置信息。
  24. 根据权利要求22所述的方法,其中,所述固定的时频资源分为第一类固定的时频资源和第二类固定的时频资源,在所述标记频点的位置信息承载在固定的时频资源上时,所述标记频点的位置信息承载在所述第二类固定的时频资源,所述第一类固定的时频资源承载所述第二类固定的时频资源的标记频点的位置信息。
  25. 根据权利要求20所述的方法,其中,所述载波包括:所述第二类节点的相邻小区的载波,其中,所述相邻小区的载波的标记频点的位置信息承载在所述第二类节点发送的无线资源控制RRC信令上。
  26. 根据权利要求20或25所述的方法,其中,所述第二类节点的载波的标记频点的位置信息,与相邻小区的载波的标记频点的位置信息相同。
  27. 根据权利要求20所述的方法,其中,所述虚拟载波位于物理载波带宽内,所述虚拟载波用于承载除同步信号和物理广播信道之外的其它信号或其它信道,其中,所述虚拟载波承载的信息包括以下至少之一:用于解调随机接入响应的第一下行控制信息,用于解调系统信息的第二下行控制信息以及用于解调寻呼消息的第三下行控制信息。
  28. 根据权利要求21所述的方法,其中,所述信道号包括以下之一:
    当前频域位置对应的一组信道号中的一个或者多个;
    相对于当前频域位置的相对信道号中的一个或者多个;
    相对于当前频域位置的相对信道号中的一个或者多个以及左右偏移指示;
    相对于当前频域位置的相对信道组索引中的一个或者多个以及组内信道索引;以及
    相对于当前频域位置的相对信道组索引中的一个或者多个以及组内信道索引和左右偏移指示。
  29. 根据权利要求28所述的方法,其中,所述相对信道号和所述相对信道组索引满足以下至少之一:
    所述相对信道号为以信道栅格间隔为单位,相对于所述当前频域位置的偏移量,和,所述相对信道组索引为以一组信道栅格间隔为单位,相对于所述当前频域位置的偏移量。
  30. 根据权利要求21所述的方法,其中,所述PRB索引包括以下之一:
    相对于当前频域位置的相对PRB索引中的一个或者多个;
    相对于当前频域位置的相对PRB索引中的一个或者多个以及左右偏移指示;
    相对于当前频域位置的相对PRB组索引中的一个或者多个以及组内PRB索引;以及
    相对于当前频域位置的相对PRB组索引中的一个或者多个以及组内PRB索引和左右偏移指示。
  31. 根据权利要求30所述的方法,其中,所述相对PRB索引和所述相对PRB组索引满足以下至少之一:
    所述相对PRB索引为以PRB带宽为单位,相对于当前频域位置的偏移量,和,
    所述相对PRB组索引为以一组PRB带宽为单位,相对于当前频域位置的偏移量。
  32. 根据权利要求28或30所述的方法,其中,所述左右偏移指示用于指示所述标记频点的位置相对于所述当前频域位置偏低还是偏高。
  33. 根据权利要求28或30所述的方法,其中,所述当前频域位置包括以下至少之一:同步信号的标记频点位置,物理广播信道的标记频点位置,同步信号块的标记频点位置,同步信号对应的终端栅格的频域位置,终端栅格的频域位置以及固定时频资源的标记频点位置。
  34. 根据权利要求33的方法,其中,终端栅格的频域位置为信道栅格的频域位置的子集,或者,终端栅格的频域位置与信道栅格的频域位置完全不同,或者,一部分终端栅格的频域位置为信道栅格的频域位置的子集,另一部分终端栅格的频域位置与信道栅格的频域位置完全不同。
  35. 根据权利要求34所述的方法,其中,所述信道栅格为以下之一:
    长期演进LTE信道栅格与LTE的子载波间隔的最小公倍数乘以2的非负整数次幂;
    LTE信道栅格与同步信号的子载波间隔的最小公倍数;
    LTE信道栅格与当前频段范围对应的最大子载波间隔的最小公倍数;
    LTE信道栅格与LTE的子载波间隔的最小公倍数的N倍;
    LTE信道栅格与同步信号的PRB的最小公倍数的N倍;
    同步信号的子载波间隔的N倍;
    同步信号的PRB的N倍;以及
    当前频段范围对应的最大子载波间隔的N倍;其中,N为正整数。
  36. 根据权利要求20所述的方法,其中,所述标记频点包括以下之一:中心频点,左边界频点,下边界频点,右边界频点以及上边界频点。
  37. 根据权利要求21所述的方法,其中,当所述标记频点的位置信息包括信道号时,所述标记频点的位置信息还包括:
    以同步信号的子载波间隔为单位,相对于所述标记频点的位置信息中指示的信道号对应的频域位置向左或向右的偏移量,或者
    所述标记频点的位置信息中指示的相对信道号对应的频域位置向左或向右的偏移量,或者
    所述标记频点的位置信息中指示的组内信道索引对应的频域位置向左或向右的偏移量。
  38. 根据权利要求21所述的方法,其中,当所述标记频点的位置信息包括PRB索引时,所述标记频点的位置信息还包括:PRB内的子载波索引或者组内PRB内的子载波索引。
  39. 一种频域位置的指示装置,应用在基站,包括:
    计算模块,设置为计算载波的标记频点的位置信息,其中,所述位置信息用于指示所述载波的频域位置,以及所述载波包括虚拟载波和物理载波中的至少之一;以及
    发送模块,设置为向终端发送所述位置信息。
  40. 根据权利要求39所述的装置,其中,所述标记频点的位置信息包括以下之一:信道号和物理资源块PRB索引。
  41. 一种频域位置的指示装置,应用在终端,包括:
    接收模块,设置为接收基站发送的载波的标记频点的位置信息,其中,所述位置信息用于指示所述载波的频域位置,以及所述载波包括虚拟载波和物理载波中的至少之一;以及
    获取模块,设置为根据所述位置信息,获取所述载波的标记频点的位置。
  42. 根据权利要求41所述的装置,其中,所述标记频点的位置信息包括以下之一:信道号和物理资源块PRB索引。
  43. 一种计算机可读存储介质,存储有计算机可执行指令,所述计算机可执行指令设置为执行权利要求1-38中任一项的方法。
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