CN108347769A

CN108347769A - The indicating means and device of frequency domain position

Info

Publication number: CN108347769A
Application number: CN201710054986.4A
Authority: CN
Inventors: 苗婷; 毕峰; 郝鹏
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2017-01-24
Filing date: 2017-01-24
Publication date: 2018-07-31
Anticipated expiration: 2037-01-24
Also published as: WO2018137429A1; CN108347769B

Abstract

The present invention provides a kind of indicating means of frequency domain position and devices, wherein this method includes：First kind node sends the location information of virtual carrier and/or the label frequency point of physical carrier to the second class node, wherein the location information is used to indicate the frequency domain position of the virtual carrier and/or the frequency domain position of the physical carrier.Through the invention, the technical issues of frequency domain position that base station in the related technology can not indicate other signals/channel and physical carrier in addition to synchronous and Physical Broadcast Channel is solved.

Description

Frequency domain position indicating method and device

Technical Field

The invention relates to the field of communication, in particular to a method and a device for indicating a frequency domain position.

Background

With the continuous progress of radio technology, various radio services emerge in large quantities, and the spectrum resources supported by the radio services are limited, so that the spectrum resources between 300MHz and 3GHz mainly used by the traditional commercial communication show a very tight situation in the face of the continuous increase of the bandwidth requirements of people, and the requirements of the future wireless communication cannot be met. In future wireless communication systems (e.g., 5G), higher carrier frequencies are used for communication than those used in fourth generation communication systems, such as 28GHz, 45GHz, etc., and the potential operating band of 5G new RAT (Radio Access Technology) system reaches 100 GHz.

In the related art, the physical carrier center frequency point (i.e., the dc frequency) is placed at a frequency domain position corresponding to each channel number (channel number). The frequency spacing between adjacent channel numbers is referred to as channel raster (channel raster) or carrier raster (carrier raster) spacing. The frequency domain step size of the terminal searching for the synchronization signal is called a frequency grid (frequency raster) or terminal grid (UE raster) interval. In the LTE system, the terminal grid interval is the same as the channel grid interval, that is, the terminal searches for the synchronization signal at the frequency domain position corresponding to all possible channel numbers, and fig. 1 is a schematic diagram of the terminal grid being the same as the channel grid in the related art of the present invention, as shown in fig. 1.

In future wireless communication systems, since the goal is to support a wider frequency band range (i.e. 0 to 100GHz), in order to more flexibly perform spectrum deployment and reduce the complexity of terminal frequency domain search, the industry proposes to use a larger terminal grid interval, i.e. the terminal grid interval may be larger than the channel grid interval. In this case, the center frequency point of the synchronization signal, broadcast channel or other related signal/channel is likely to be different from the center frequency point of the physical carrier. After the terminal completes downlink synchronization, in order to further communicate with the base station, it needs to acquire frequency domain positions of other signals/channels and physical carriers from the base station except for synchronization and physical broadcast channels.

How the base station indicates other signals/channels besides the synchronization and physical broadcast channels and the frequency domain location of the physical carrier is a key issue that needs to be solved by future wireless communication systems. In view of the above problems in the related art, no effective solution has been found at present.

Disclosure of Invention

The embodiment of the invention provides a method and a device for indicating a frequency domain position, which are used for at least solving the technical problem that a base station cannot indicate other signals/channels except a synchronous and physical broadcast channel and the frequency domain position of a physical carrier in the related technology.

According to an embodiment of the present invention, there is provided a method for indicating a frequency domain position, including: the method comprises the steps that a first type node sends position information of a marked frequency point of a virtual carrier and/or a physical carrier to a second type node, wherein the position information is used for indicating the frequency domain position of the virtual carrier and/or the frequency domain position of the physical carrier.

Optionally, the location information of the marked frequency point at least includes one of the following: a channel number; physical resource block PRB index.

Optionally, the location information is carried on a physical broadcast channel or on a fixed time-frequency resource.

Optionally, when the position information of the marked frequency point is carried on a physical broadcast channel, the physical broadcast channel refers to a second type of physical broadcast channel, and when the physical broadcast channel is divided into a first type of physical broadcast channel and the second type of physical broadcast channel, the first type of physical broadcast channel carries the position information of the marked frequency point of the second type of physical broadcast channel.

Optionally, when the location information of the marked frequency point is carried on a fixed time-frequency resource, the fixed time-frequency resource refers to a second type of fixed time-frequency resource, wherein the fixed time-frequency resource is divided into a first type of fixed time-frequency resource and the second type of fixed time-frequency resource, and the first type of fixed time-frequency resource carries the location information of the marked frequency point of the second type of fixed time-frequency resource.

Optionally, the virtual carrier and/or the physical carrier comprise: and the position information of the marked frequency points of the virtual carrier wave and/or the physical carrier wave of the adjacent cell of the first type node is carried on a Radio Resource Control (RRC) signaling sent by the first type node.

Optionally, the position information of the marked frequency point of the virtual carrier and/or the physical carrier of the first type node is the same as the position information of the marked frequency point of the virtual carrier and/or the physical carrier of the adjacent cell.

Optionally, the virtual carrier is located within a physical carrier bandwidth and is used for carrying other signals or other channels besides the synchronization signal and the physical broadcast channel, wherein the information carried by the virtual carrier includes at least one of the following: the downlink control information used for demodulating the random access response, the downlink control information used for demodulating the system information and the downlink control information used for demodulating the paging message.

Optionally, the channel number includes at least one of:

one or more of a set of channel numbers corresponding to a current frequency domain location;

one or more of the relative channel numbers relative to the current frequency domain location;

one or more of the relative channel numbers relative to the current frequency domain position and a left-right offset indication;

one or more of relative channel group indices relative to a current frequency domain position and intra-group channel indices;

one or more of a relative channel group index relative to a current frequency domain position and an intra-group channel index and a left-right offset indication.

Optionally, the relative channel number is an offset from the current frequency domain position in units of channel grid intervals, and/or the relative channel group index is an offset from the current frequency domain position in units of a group of channel grid intervals.

Optionally, the PRB index includes at least one of:

one or more of a relative PRB index with respect to a current frequency domain location;

one or more of a relative PRB index relative to a current frequency domain position and a left-right offset indication;

one or more of relative PRB group indices and intra-group PRB indices relative to a current frequency domain position;

one or more of a relative PRB group index with respect to a current frequency domain location and an intra-group PRB index and left-right offset indication.

Optionally, the relative PRB index is an offset from the current frequency-domain location in units of PRB bandwidths, and/or the relative PRB group index is an offset from the current frequency-domain location in units of a group of PRB bandwidths.

Optionally, the left and right offset indications are used to indicate whether the position of the marked frequency point is lower or higher relative to the current frequency domain position.

Optionally, the current frequency domain location comprises at least one of: the method comprises the steps of marking frequency point positions of synchronous signals, marking frequency point positions of physical broadcast channels, marking frequency point positions of synchronous signal blocks SS blocks, frequency domain positions of terminal grids corresponding to the synchronous signals, frequency domain positions of the terminal grids, and marking frequency point positions of fixed time-frequency resources.

Optionally, the terminal grid positions are a subset of the channel grid positions, or the terminal grid positions are completely different from the channel grid positions, or a part of the terminal grid positions are a subset of the channel grid positions and another part of the terminal grid positions are completely different from the channel grid positions.

Optionally, the channel grid comprises at least one of:

the least common multiple of the spacing between the Long Term Evolution (LTE) channel grid and the subcarriers of LTE is multiplied by the power of 2 which is a nonnegative integer;

the least common multiple of the spacing of the LTE channel grid and the subcarriers of the synchronization signal;

the least common multiple of the maximum subcarrier spacing corresponding to the LTE channel grid and the current frequency range;

n times of the least common multiple of the LTE channel grid and LTE subcarrier spacing;

n times the least common multiple of the PRBs of the LTE channel grid and the synchronization signal;

n times the subcarrier spacing of the synchronization signal;

n times PRB of the synchronization signal;

n times of the maximum subcarrier interval corresponding to the current frequency range;

wherein N is a positive integer.

Optionally, the marked frequency points include at least one of: a center frequency point, a left boundary frequency point or a lower boundary frequency point, and a right boundary frequency point or an upper boundary frequency point.

Optionally, when the location information of the marked frequency point includes a channel number, the location information of the marked frequency point further includes: and taking the subcarrier interval of the synchronous signal as a unit, and making the frequency domain position corresponding to the channel number indicated in the position information of the marked frequency point offset leftwards and/or rightwards, or making the frequency domain position corresponding to the relative channel number indicated in the position information of the marked frequency point offset leftwards and/or rightwards, or making the frequency domain position corresponding to the intra-group channel index indicated in the position information of the marked frequency point offset leftwards and/or rightwards.

Optionally, when the location information of the marked frequency point includes a PRB index, the location information of the marked frequency point further includes: subcarrier index within a PRB, or subcarrier index within a PRB within a group.

According to another embodiment of the present invention, there is provided another frequency domain position indicating method, including: and the second type node receives the position information of the marked frequency points of the virtual carrier and/or the physical carrier sent by the first type node, wherein the position information is used for indicating the frequency domain position of the virtual carrier and/or the frequency domain position of the physical carrier.

Optionally, the channel number includes at least one of:

Optionally, the PRB index includes at least one of:

Optionally, the channel grid comprises at least one of:

n times the subcarrier spacing of the synchronization signal;

n times PRB of the synchronization signal;

n times of maximum subcarrier interval corresponding to current frequency band range

Wherein N is a positive integer.

According to another embodiment of the present invention, there is provided a frequency domain position indicating device, applied to a base station, including: the device comprises a sending module and a receiving module, wherein the sending module is used for sending the position information of the marked frequency points of the virtual carrier and/or the physical carrier to a terminal, and the position information is used for indicating the frequency domain position of the virtual carrier and/or the frequency domain position of the physical carrier.

According to another embodiment of the present invention, there is provided another frequency domain position indicating apparatus, which is applied to a terminal, and includes: the receiving module is used for receiving the position information of the marked frequency points of the virtual carrier and/or the physical carrier sent by the base station, wherein the position information is used for indicating the frequency domain position of the virtual carrier and/or the frequency domain position of the physical carrier.

According to still another embodiment of the present invention, there is also provided a storage medium. The storage medium is configured to store program code for performing the steps of:

and sending the position information of the marked frequency points of the virtual carrier and/or the physical carrier to a second type node, wherein the position information is used for indicating the frequency domain position of the virtual carrier and/or the frequency domain position of the physical carrier.

According to the invention, the first-class node sends the position information of the marked frequency point of the virtual carrier and/or the physical carrier to the second-class node, wherein the position information is used for indicating the frequency domain position of the virtual carrier and/or the frequency domain position of the physical carrier, so that the base station can indicate other signals/channels except the synchronous and physical broadcast channels and the frequency domain position of the marked frequency of the physical carrier to the terminal, thereby further completing the information transmission between the base station and the terminal, and solving the technical problem that the base station cannot indicate other signals/channels except the synchronous and physical broadcast channels and the frequency domain position of the physical carrier in the related technology.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:

fig. 1 is a schematic diagram of a terminal grid identical to a channel grid in the related art of the present invention;

FIG. 2 is a flow chart of a method of indicating frequency domain position according to an embodiment of the present invention;

FIG. 3 is a flow chart of another method of indicating frequency domain location according to an embodiment of the present invention;

FIG. 4 is a block diagram of a frequency domain position indicating apparatus according to an embodiment of the present invention;

FIG. 5 is a block diagram of another frequency domain position indicating apparatus according to an embodiment of the present invention;

FIG. 6 is a schematic diagram of a terminal grid being more sparse than a channel grid in accordance with an embodiment of the present invention;

FIG. 7 is a first diagram illustrating a channel structure according to an embodiment of the present invention;

FIG. 8 is a second schematic diagram of a channel structure according to an embodiment of the present invention;

FIG. 9 is a first diagram illustrating channel grouping according to an embodiment of the present invention;

FIG. 10 is a third schematic diagram of a channel structure according to an embodiment of the present invention;

FIG. 11 is a fourth schematic diagram of a channel structure according to an embodiment of the present invention;

FIG. 12 is a fifth schematic diagram of a channel structure according to an embodiment of the present invention;

fig. 13 is a sixth schematic view of a channel structure according to an embodiment of the present invention;

fig. 14 is a seventh schematic diagram of a channel structure according to an embodiment of the present invention.

Detailed Description

The invention will be described in detail hereinafter with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

Example 1

In this embodiment, a method for indicating a frequency domain position is provided, and fig. 2 is a flowchart of a method for indicating a frequency domain position according to an embodiment of the present invention, as shown in fig. 2, the flowchart includes the following steps:

step S202, the first-class node sends the position information of the marked frequency points of the virtual carrier and/or the physical carrier to the second-class node, wherein the position information is used for indicating the frequency domain position of the virtual carrier and/or the frequency domain position of the physical carrier.

Through the steps, the first-class node sends the position information of the marked frequency points of the virtual carrier and/or the physical carrier to the second-class node, wherein the position information is used for indicating the frequency domain position of the virtual carrier and/or the frequency domain position of the physical carrier, so that the base station can indicate other signals/channels except the synchronous and physical broadcast channels and the frequency domain position of the marked frequency of the physical carrier to the terminal, the information transmission between the base station and the terminal is further completed, and the technical problem that the base station cannot indicate other signals/channels except the synchronous and physical broadcast channels and the frequency domain position of the physical carrier in the related technology is solved.

In this embodiment, another method for indicating a frequency domain position is provided, which corresponds to the scheme shown in fig. 2, and fig. 3 is a flowchart of another method for indicating a frequency domain position according to an embodiment of the present invention, as shown in fig. 3, the flowchart includes the following steps:

step S302, the second type node receives the position information of the marked frequency points of the virtual carrier and/or the physical carrier sent by the first type node, wherein the position information is used for indicating the frequency domain position of the virtual carrier and/or the frequency domain position of the physical carrier.

Optionally, the first type of node that is a main execution body of the above steps may be a base station, specifically, a Transmit-Receive node (TRP), a relay node, a macro base station, a micro base station, a pico base station, a home base station, a radio remote node, an Access node (AP), and the like, and the second type of node may be a terminal, a relay node, and the like. In the following embodiments, the first type node is exemplified by a base station, and the second type node is exemplified by a terminal, etc., but is not limited thereto.

Optionally, the position information of the marked frequency point includes any one of the following items: 1) a channel number; 2) physical Resource Block (PRB) index.

Optionally, the location information of the marked frequency point is carried on a physical broadcast channel, or the location information of the marked frequency point is carried on a fixed time-frequency resource.

In an optional implementation manner according to this embodiment, the location information of the marked frequency point is carried on a physical broadcast channel, and when the physical broadcast channel is divided into a first type physical broadcast channel and a second type physical broadcast channel, the physical broadcast channel refers to the second type physical broadcast channel. The first type physical broadcast channel carries the position information of the marked frequency points of the second type physical broadcast channel.

In an optional implementation manner according to this embodiment, the location information of the marked frequency point is carried on a fixed time-frequency resource, and when the fixed time-frequency resource is divided into a first fixed time-frequency resource and a second fixed time-frequency resource, the fixed time-frequency resource refers to the second fixed time-frequency resource. The first fixed time frequency resource bears the position information of the marked frequency point of the second fixed time frequency resource.

Optionally, the position information of the marked frequency point of the virtual carrier and/or the physical carrier may also be the position information of the marked frequency point of the virtual carrier and/or the physical carrier of the adjacent cell. The position information of the marked frequency points of the virtual carrier waves and/or the physical carrier waves of the adjacent cells is borne on the RRC signaling sent by the first type of nodes. Optionally, the position information of the marked frequency point of the virtual carrier and/or the physical carrier is the same as the position information of the marked frequency point of the virtual carrier and/or the physical carrier of the adjacent cell.

Optionally, the virtual carrier is located within the physical carrier bandwidth and is used for carrying other signals/channels besides the synchronization signal and the physical broadcast channel, such as a common control sub-band. The information carried by the virtual carrier comprises at least one of the following: the downlink control information used for demodulating the random access response, the downlink control information used for demodulating the system information and the downlink control information used for demodulating the paging message.

Optionally, the channel number includes any one or more of the following items: one or more of a set of channel numbers corresponding to a current frequency domain location; one or more of the relative channel numbers relative to the current frequency domain location; or, one or more of the relative channel numbers relative to the current frequency domain position and a left-right offset indication; or, one or more of the relative channel group indices and the intra-group channel index relative to the current frequency domain position; or one or more of the relative channel group indices relative to the current frequency domain position and the intra-group channel index and left-right offset indications.

Optionally, the relative channel number refers to an offset from a current frequency domain position in units of channel grid intervals. The relative channel group index refers to an offset from a current frequency domain position in units of a group of channel grid intervals.

In this embodiment, the PRB index includes any one of the following items:

one or more of a relative PRB index with respect to a current frequency domain location; or,

one or more of a relative PRB index relative to a current frequency domain position and a left-right offset indication; or,

one or more of relative PRB group indices and intra-group PRB indices relative to a current frequency domain position; or,

Optionally, the relative PRB index refers to an offset from the current frequency-domain position in units of PRB bandwidth. Or, the relative PRB group index refers to an offset from a current frequency-domain position in units of a group of PRB bandwidths.

In this embodiment, the left-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.

In this embodiment, the current frequency domain position refers to a marked frequency point position of a Synchronization signal, or a marked frequency point position of a physical broadcast channel, or a marked frequency point position of a Synchronization signal block (Synchronization signal block, SS block, SSblock is a time frequency resource block at least including a Synchronization signal), or a frequency domain position of a terminal grid corresponding to a Synchronization signal, or a frequency domain position of a certain terminal grid, or a marked frequency point position of a fixed time frequency resource.

Optionally, the terminal grid positions are subsets of the channel grid positions, or the terminal grid positions are completely different from the channel grid positions, or a part of the terminal grid positions are subsets of the channel grid positions, and another part of the terminal grid positions are completely different from the channel grid positions.

Optionally, the marked frequency point includes any one of the following items: a center frequency point, a left boundary frequency point (or a lower boundary frequency point), and a right boundary frequency point (or an upper boundary frequency point).

Optionally, when the location information of the marked frequency point includes a channel number, the location information of the marked frequency point further includes: and the offset of the channel number indicated in the position information of the marked frequency point or the frequency domain position corresponding to the relative channel number or the channel index in the group to the left and/or the right is taken as a unit of the subcarrier interval of the synchronous signal.

In this embodiment, the channel grid includes any one of: a) the least common multiple of the LTE channel grid (100kHz) and the LTE subcarrier spacing (15kHz) is multiplied by the power of 2 to the M. b) The LTE channel grid (100kHz) is the least common multiple of the subcarrier spacing (e.g., 15kHz times the power of 2M) of the synchronization signal. c) The LTE channel grid (100kHz) is the least common multiple of the maximum subcarrier spacing corresponding to the current frequency band range. d) The LTE channel grid (100kHz) is spaced N times the least common multiple of the LTE subcarrier spacing (15 kHz). e) The LTE channel grid (100kHz) is N times the least common multiple of the PRBs of the synchronization signal (e.g., 12 times 15kHz times the power of 2M). f) The subcarrier spacing of the synchronization signal is N times (e.g., 15kHz times 2 raised to the power of M). g) The PRB of the synchronization signal is N times (e.g. 12 times 15kHz times the power of 2M). h) N times of the maximum subcarrier interval corresponding to the current frequency band range. Wherein M is a non-negative integer and N is a positive integer.

Through the above description of the embodiments, those skilled in the art can clearly understand that the method according to the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but the former is a better implementation mode in many cases. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal device (such as a mobile phone, a computer, a server, or a network device) to execute the method according to the embodiments of the present invention.

Example 2

In this embodiment, a frequency domain position indicating device is further provided, and the device is used to implement the foregoing embodiments and preferred embodiments, and the description of the device that has been already made is omitted. As used below, the term "module" may be a combination of software and/or hardware that implements a predetermined function. Although the means described in the embodiments below are preferably implemented in software, an implementation in hardware, or a combination of software and hardware is also possible and contemplated.

Fig. 4 is a block diagram of a frequency domain position indicating apparatus according to an embodiment of the present invention, which is applied to a base station, and as shown in fig. 4, the apparatus includes: a sending module 40, configured to send location information of a marked frequency point of a virtual carrier and/or a physical carrier to a terminal, where the location information is used to indicate a frequency domain location of the virtual carrier and/or a frequency domain location of the physical carrier.

Fig. 5 is a block diagram of another frequency domain position indicating apparatus according to an embodiment of the present invention, which is applied to a terminal, and includes: a receiving module 50, configured to receive location information of a marked frequency point of a virtual carrier and/or a physical carrier sent by a base station, where the location information is used to indicate a frequency domain location of the virtual carrier and/or a frequency domain location of the physical carrier.

Optionally, the location information of the marked frequency point at least includes one of the following: a channel number; relative physical resource block PRB index.

Optionally, the channel grid comprises at least one of: the least common multiple of the Long-Term Evolution (LTE) channel grid and the subcarrier spacing of LTE is multiplied by the non-negative integer power of 2; the least common multiple of the spacing of the LTE channel grid and the subcarriers of the synchronization signal; the least common multiple of the maximum subcarrier spacing corresponding to the LTE channel grid and the current frequency range; n times of the least common multiple of the LTE channel grid and LTE subcarrier spacing; n times the least common multiple of the PRBs of the LTE channel grid and the synchronization signal; n times the subcarrier spacing of the synchronization signal; n times PRB of the synchronization signal; n times of the maximum subcarrier interval corresponding to the current frequency range; wherein N is a positive integer.

It should be noted that, the above modules may be implemented by software or hardware, and for the latter, the following may be implemented, but not limited to: the modules are all positioned in the same processor; alternatively, the modules are respectively located in different processors in any combination.

Example 3

The present embodiment is an alternative embodiment of the present application, and is used to specifically describe the present application in combination with a specific scenario.

In the following description of the embodiments, both the channel grid spacing and the channel grid refer to frequency intervals between adjacent channel numbers, and both the terminal grid spacing and the terminal grid refer to frequency domain steps in which the terminal searches for a synchronization signal. No distinction is made. In addition, the grid position of the terminal refers to a frequency point for searching the frequency domain by the terminal when the terminal performs initial access. The left-right offset indicates whether the frequency domain position notified by the base station is lower or higher with respect to the current frequency domain position, i.e., whether the frequency domain position notified by the base station is to the left or right of the current frequency domain position.

The present embodiment includes a number of examples:

example 1

In the low frequency band (e.g., below 6 GHz), the channel grid in future wireless communication systems (e.g., 5G) is defined as 100kHz, the terminal grid is N times the channel grid, and N is a positive integer.

The channel grid configuration of 100kHz enables flexible adjustment of the adjacent channel leakage power ratio between adjacent carriers, which advantage is still beneficial for future wireless communication when the future wireless communication system re-crops (regarming) LTE spectrum, and also avoids additional spectrum planning. The terminal grid is N times of the channel grid, and when N is greater than 1, the complexity of terminal frequency domain searching can be reduced compared with LTE. Of course, the termination grid may be a positive integer multiple of 100kHz, not necessarily a multiple of the channel grid.

In the high frequency band (e.g., above 6 GHz), the channel grid of future wireless communication systems is defined as:

the least common multiple of the LTE channel grid (100kHz) and the LTE subcarrier spacing (15kHz) is multiplied by the power of 2 to the M. Or,

the LTE channel grid (100kHz) is the least common multiple of the subcarrier spacing (e.g., 15kHz times the power of 2M) of the synchronization signal. Or,

the LTE channel grid (100kHz) is the least common multiple of the maximum subcarrier spacing corresponding to the current frequency band range (e.g., 240kHz for the maximum subcarrier spacing when the current frequency band range supports 3 subcarrier spacings of 60, 120, and 240 kHz). Or,

the LTE channel grid (100kHz) is spaced N times the least common multiple of the LTE subcarrier spacing (15 kHz). Or,

the LTE channel grid (100kHz) is N times the least common multiple of the PRBs of the synchronization signal (e.g., 12 times 15kHz times the power of 2M). Or,

the subcarrier spacing of the synchronization signal is N times (e.g., 15kHz times 2 raised to the power of M). Or,

the PRB of the synchronization signal is N times (e.g. 12 times 15kHz times the power of 2M).

N times of the maximum subcarrier interval corresponding to the current frequency band range.

Wherein 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 channel grid selection methods may be employed.

In the high frequency band, future wireless communication systems need to support multiple subcarrier spacings ranging from at least 3.75kHz to 480kHz in order to meet the needs to support various services. Therefore, the channel grid should be changed accordingly, and by selecting M, N and K appropriately, the channel grid and the terminal grid configuration can both enable the center subcarrier of the synchronization signal to be located on a certain subcarrier of the physical carrier (i.e. to coincide with a certain subcarrier of the physical carrier), so that the resource network of the synchronization signal is consistent with the resource grid of the physical carrier, and the utilization efficiency of the frequency spectrum resource and the performance of the terminal for detecting the synchronization signal can be improved.

When the terminal grid is a positive integer multiple of the channel grid, the terminal grid position can always be located at one of the channel grid positions. Making the design of the system simpler.

When the channel grid is a multiple of 100kHz, the terminal grid is a positive integer multiple of the channel grid and is also a multiple of 100kHz, and the configuration enables dual-mode terminals supporting LTE and future wireless communication systems to share one frequency synthesizer, so that the terminal cost can be reduced.

In a future wireless communication system, since a terminal grid is more sparse than a channel grid, synchronization signals of multiple channels may be transmitted on the same terminal grid, fig. 6 is a schematic diagram of the terminal grid being more sparse than the channel grid according to the embodiment of the present invention, as shown in fig. 6, synchronization signals corresponding to channels 0 and 1 are transmitted at terminal grid position 0, and synchronization signals corresponding to channels 2 and 3 are transmitted at terminal grid position 1. That is, each grid position of the terminal corresponds to a plurality of channel numbers, and therefore, it is necessary to indicate which channel/channels the synchronization signal corresponds to or the position of the marked frequency point of the physical carrier corresponding to the synchronization signal, and the position of the marked frequency point of the virtual carrier. Wherein the virtual carrier is located within the physical carrier bandwidth and is used to carry other signals/channels besides the synchronization signal and the physical broadcast channel, such as a typical example, a common control sub-band; the marked frequency points comprise any one of the following items: a center frequency point, a left boundary frequency point (or a lower boundary frequency point), and a right boundary frequency point (or an upper boundary frequency point). The following examples give various indications. Fig. 6 illustrates the terminal grid location as a subset of the channel grid locations, but is not limited thereto, and in practice, the terminal grid location and the channel grid location may be completely different, or a part of the terminal grid location is a subset of the channel grid location and another part of the terminal grid location is completely different from the channel grid location.

Example 2

This example provides a method of indicating a center frequency point of a virtual carrier or a physical carrier using a channel number or a relative channel number.

In this example, the terminal grids are N times (e.g. N is 3) the channel grids, and it is assumed that each terminal grid corresponds to K channel numbers, that is, the physical carriers corresponding to K channels transmit synchronization signals at the terminal grid, the numbers are respectively 1 to K, and the correspondence between the K channel numbers and the actual channel numbers is predefined or indicated by RRC signaling. The central frequency point of the physical carrier is the frequency domain position corresponding to the channel 3m +1, the central frequency point of the virtual carrier is the frequency domain position corresponding to the channel 3m +3, the central frequency point of the synchronization signal is the frequency domain position corresponding to the channel 3n, and fig. 7 is a first schematic diagram of the channel structure of the embodiment of the present invention, as shown in fig. 7.

The following description will first discuss an indication method by taking location information of a center frequency point of a physical carrier as an example.

The base station sends the position information of the center frequency point of the physical carrier, the position information can be borne on a physical broadcast channel, and the information content specifically comprises:

the number of the channel corresponding to the central frequency point of the physical carrier is 3m +1, and the number of bits occupied by the information is more than thatWherein M is a maximum channel number of the wireless communication system; or

The number of bits occupied by the information is more than the number of the channel number k corresponding to the central frequency point of the physical carrierThe smallest integer of (a); or

The relative channel number s corresponding to the central frequency point of the physical carrier, for example, the relative channel numbers of K (K is odd number) channels relative to the central frequency point of the synchronization signal are respectively ……,s，……，When K is even number, relative channel numbers are respectively-K/2 +1, …, 0, 1, … …, s, … … and K/2, or-K/2, …, 0, 1, … …, s, … … and K/2-1, the bit number occupied by the information is more than that of the informationThe smallest integer of (a); or

The relative channel number and left-right offset indication corresponding to the center frequency point of the physical carrier, that is, the frequency shift amount of the center frequency point of the physical carrier relative to the center frequency point of the synchronization signal, and the left-right offset indication (1 bit), for example, the offset is 3m +1-3n in units of channel grids, so that the number of bits occupied by the information is (greater than) that occupied by the informationThe minimum integer of) +1, wherein the maximum offset of the center frequency point of the K physical carrier with respect to the center frequency point of the synchronization signal in unit of channel grid is preconfigured by the network.

And the terminal receives the position information of the central frequency point of the physical carrier, thereby obtaining the position of the central frequency point of the physical carrier.

In addition, although the center frequency point of the physical carrier is exactly at the frequency domain position corresponding to the channel, that is, the offset of the center frequency point of the physical carrier with respect to the channel number or the frequency domain position corresponding to the channel number (the number of subcarriers of the synchronization signal) is 0, this may be regarded as a special offset, and in order to unify the standards, the position information may include an offset to the left/right in units of the subcarrier interval of the synchronization signal with respect to the channel number 3m +1 or the channel numbers 3m +1 to 3 n. For simplicity, the following examples refer to the case where the offset is 0, and the notification of the offset is omitted, and the offset may be included in the position information to unify the standards.

The method is also suitable for the base station to indicate the position of the center frequency point of the virtual carrier to the terminal. The only difference is that the center frequency point of the virtual carrier is located in a channel different from the physical carrier (channel 3m +3 in fig. 7).

Example 3

This example provides a method for indicating a left boundary frequency point (or a lower boundary frequency point), a center frequency point, and a right boundary frequency point (or an upper boundary frequency point) of a virtual carrier and a physical carrier using a channel number.

In this example, the central frequency point of the physical carrier is the frequency domain position corresponding to the channel 3m +1, the central frequency point of the synchronization signal is the frequency domain position corresponding to the channel 3n, and the central frequency point of the virtual carrier is located between the channels 3m +2 and 3m +3, and fig. 8 is a second schematic diagram of the channel structure in the embodiment of the present invention, as shown in fig. 8.

The following description will first describe the indicating method by taking the position of the left boundary frequency point (or the lower boundary frequency point) of the virtual carrier as an example.

The base station sends the position information of the left boundary frequency point (or the lower boundary frequency point) of the virtual carrier, wherein the information can be carried on a physical broadcast channel, and the specific content of the position information is as follows:

the position information further includes an offset to the right in units of subcarrier intervals of the synchronization signal, for example, the offset is X subcarriers, with respect to the channel number 3m +1, because the left boundary frequency point of the virtual carrier deviates from the frequency domain position corresponding to the channel 3m +1, where the channel number corresponding to the left boundary frequency point (or the lower boundary frequency point) of the virtual carrier (for example, the channel number 3m +1 closest to the left boundary frequency point of the virtual carrier is selected).

The number of bits occupied by the location information thus comprises two parts, one part being the number of bits occupied by the channel number and having a size greater than that of the channel numberWherein M is a maximum channel number of the wireless communication system; the other part is the number of bits occupied by the offset with respect to the channel number indicated in the position information, the size of which is larger than that of the channel number indicated in the position informationWhere L is the number of subcarriers included in the channel grid spacing. The bit number occupied by the position information is the sum of the bit numbers occupied by the two parts.

The terminal receives the position information of the left boundary frequency point (or the lower boundary frequency point) of the virtual carrier, so that the position of the left boundary frequency point (or the lower boundary frequency point) of the virtual carrier, namely the frequency of the channel 3m +1, is obtained, and the frequency offset of the relative channel 3m +1 is added, namely the product of the frequency offset and the interval of the synchronous signal subcarriers is added.

It should be noted that, in the above example, 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 be a channel number 3m +2 closest to the right side of the left boundary frequency point of the virtual carrier, and at this time, the location information further needs to further include an offset to the left in units of subcarrier intervals of the synchronization signal, for example, the offset is Y subcarriers, relative to the channel number 3m + 2. The terminal receives the position information of the left boundary frequency point (or the lower boundary frequency point) of the virtual carrier, so that the position of the left boundary frequency point (or the lower boundary frequency point) of the virtual carrier, namely the frequency of the channel 3m +2 is obtained, and the frequency offset relative to the channel 3m +2 is subtracted, namely the product of the frequency offset and the synchronous signal subcarrier interval is subtracted. In practice, whether the channel number closest to the left side or the right side of the left boundary frequency point (or the lower boundary frequency point) of the virtual carrier is selected is specified in advance by a standard, or 1-bit information is additionally added to indicate whether the channel number closest to the left side or the right side of the left boundary frequency point (or the lower boundary frequency point) of the virtual carrier is selected.

The method is also suitable for indicating the position of the center frequency point or the right boundary frequency point (or the upper boundary frequency point) of the virtual carrier to the terminal by the base station, and indicating the position of the left boundary frequency point (or the lower boundary frequency point), or the center frequency point or the right boundary frequency point (or the upper boundary frequency point) of the physical carrier to the terminal by the base station.

Example 4

When the maximum channel number of the wireless communication system is larger, the resource overhead of the positions of the marked frequency points of the virtual carrier and/or the physical carrier are indicated by the channel numbers, so that the method for indicating the left boundary frequency point (or the lower boundary frequency point), the center frequency point and the right boundary frequency point (or the upper boundary frequency point) of the virtual carrier and the physical carrier by using the relative channel numbers is provided.

Still taking fig. 8 as an example, the main difference from example 3 is that the channel number in the location information is replaced by a relative channel number, for example, by a relative channel number 3m +1-3n closest to the left side of the left boundary frequency point (or the lower boundary frequency point) of the virtual carrier, and in addition, because the relative channel number is, the location information further includes a left-right offset indication, for example, 1 bit information represents-1 and 1, where-1 represents that the left boundary frequency point (or the lower boundary frequency point) of the virtual carrier is on the left side of the center frequency point of the synchronization signal, 1 represents that the left boundary frequency point (or the lower boundary frequency point) of the virtual carrier is on the right side of the center frequency point of the synchronization signal, and similarly, the location information further needs to include an offset to the right in units of subcarrier intervals of the synchronization signal with respect to the relative channel numbers 3m +1-3n, for example offset by X subcarriers. The calculation method of the number of bits occupied by the position information is the same as that of example 3, and a part of the calculation method is the number of bits occupied by the relative channel number, and the size of the bits is larger than that of the bits occupied by the relative channel numberWhere M is the maximum channel number of the wireless communication system, but the meaning of M is different from that of example 3, and M represents the maximum offset in channel grid units of the left boundary frequency point (or the lower boundary frequency point) of the virtual carrier from the center frequency point of the synchronization signal, i.e., the maximum relative channel number. The other part is the number of bits occupied by the offset with respect to the relative channel number indicated in the position information, the size of which is larger than that of the relative channel number indicated in the position informationWhere L is the number of subcarriers included in the channel grid spacing. The bit number occupied by the position information is the sum of the bit numbers occupied by the two parts.

It should be noted that, in the above method, 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 be the relative channel number 3m +2-3n closest to the right side of the left boundary frequency point of the virtual carrier. The indication method is the same as the selection of the nearest relative channel number 3m +1-3n to the left of the left boundary frequency point (or the lower boundary frequency point) of the virtual carrier, and is not described herein again. In practice, the relative channel number closest to the left side or the right side of the left boundary frequency point (or the lower boundary frequency point) of the virtual carrier is selected and specified in advance by a standard, or 1-bit information is additionally added to indicate that the relative channel number closest to the left side or the right side of the left boundary frequency point (or the lower boundary frequency point) of the virtual carrier is selected.

The method for indicating the left boundary frequency point (or the lower boundary frequency point) of the virtual carrier to the terminal by the base station is also suitable for indicating the position of the center frequency point or the right boundary frequency point (or the upper boundary frequency point) of the virtual carrier to the terminal by the base station, and indicating the position of the left boundary frequency point (or the lower boundary frequency point) or the center frequency point or the right boundary frequency point (or the upper boundary frequency point) of the physical carrier to the terminal by the base station.

Example 5

The terminal grid is sparser than the channel grid, and when the terminal grid is larger, even if the relative channel number is used to indicate the position of the marked frequency point of the virtual carrier or the physical carrier, a larger resource overhead may be required, so this example gives that the channels are grouped, and the position of the marked frequency point of the virtual carrier or the physical carrier is indicated by a channel group or a relative channel group.

There are two channel grouping methods according to different indication methods. The position of the marked frequency point of the virtual carrier or the physical carrier is indicated by using the channel group index, and the grouping method comprises the following steps: all channels are grouped in sequence according to numbers, every M consecutive channels are grouped (the number of groups is related to the total number of channels, and the number of channels included in the last group is less than or equal to M), fig. 9 is a schematic diagram of channel grouping according to an embodiment of the present invention, as shown in fig. 9.

When the number of channels is large, the use of the channel group index indication may also require large resource overhead, and the resource overhead may be reduced using the relative channel group. That is, the position of the marked bin of the virtual carrier or the physical carrier is indicated by using a relative channel group index, wherein the relative channel group index represents the offset of the channel group unit relative to the central bin of the synchronization signal, and the grouping method comprises the following steps: starting from a channel where a center frequency point of a synchronization signal is located, sequentially dividing M continuous channels into a group to the left or the right, where whether the channel where the center frequency point of the synchronization signal is located includes a first channel group depends on implementation, and fig. 10 is a schematic view of a channel structure in the third embodiment of the present invention, as shown in fig. 10.

The intra-group channel index is related to the number of channels included in the channel group according to the above-described grouping manner, and is 0, 1, … …, M-1 according to the above-described grouping manner. The grouping is only for clarity of the embodiment and other grouping methods are still suitable for the present solution.

Example 1

A method of indicating the center frequency point of the virtual carrier using the channel group index is given below.

In this example, the terminal grid is N times of the channel grid (for example, N is ((M +1) M-1)/N), the center frequency point of the virtual carrier is located in the channel (M +2) M-1, and fig. 11 is a fourth schematic diagram of the channel structure according to the embodiment of the present invention, as shown in fig. 11.

The following description will first discuss an indication method by taking an example of indicating the position of the center frequency point of a virtual carrier.

The base station sends the position information of the center frequency point of the virtual carrier, wherein the position information can be borne on a physical broadcast channel, and the specific content of the position information is as follows: and the channel group index (for example, M +1) corresponding to the central frequency point of the virtual carrier and the intra-group channel index (for example, M-1).

And the terminal receives the position information of the central frequency point of the virtual carrier, thereby obtaining the position of the central frequency point of the virtual carrier.

It should be noted that, when the center frequency point of the virtual carrier and the frequency domain position corresponding to the intra-group channel index (for example, M-1) are offset, the position information further needs to include: the offset amount with respect to the frequency domain position corresponding to the intra-group channel index is in units of the subcarrier interval of the synchronization signal. At this time, the selection of the intra-group channel index closest to the left/right of the center frequency point of the virtual carrier depends on implementation, and the specific scheme may refer to example 3, which is not described herein again.

Example two

A method of indicating the center frequency point of the virtual carrier using the relative channel group index is given below.

Fig. 12 is a schematic diagram of a channel structure of a fifth embodiment of the present invention, and an indication method is first described below by taking an example of indicating a position of a center frequency point of a virtual carrier.

The base station sends the position information of the center frequency point of the virtual carrier, wherein the position information can be borne on a physical broadcast channel, and the specific content of the position information is as follows: a relative channel group index (e.g., k) corresponding to the center frequency bin of the virtual carrier, an intra-group channel index (e.g., x), and a left-right offset indication. The left and right offset indicator is used to indicate whether the center frequency point of the virtual carrier is on the left or right side of the center frequency point of the synchronization signal, for example, 1 bit information indicates-1 and 1, which respectively indicate that the center frequency point of the virtual carrier is on the left or right side of the center frequency point of the synchronization signal.

Note that, when the frequency domain position of the center frequency point of the virtual carrier and the frequency domain position corresponding to the intra-group channel index (for example, x) are deviated, the position information needs to further include: the offset amount with respect to the frequency domain position corresponding to the intra-group channel index is in units of the subcarrier interval of the synchronization signal. At this time, the selection of the intra-group channel index closest to the left/right of the center frequency point of the virtual carrier depends on implementation, and the specific scheme may refer to example 3, which is not described herein again.

The method for indicating the center frequency point of the virtual carrier to the terminal by the base station in the first and second examples is also applicable to indicating the position of the left boundary frequency point (or the lower boundary frequency point) or the right boundary frequency point (or the upper boundary frequency point) of the virtual carrier to the terminal by the base station, and indicating the position of the left boundary frequency point (or the lower boundary frequency point) or the center frequency point or the right boundary frequency point (or the upper boundary frequency point) of the physical carrier to the terminal by the base station.

The following example gives a method of indicating the positions of the marked frequency points of the virtual carrier or the physical carrier with respect to the PRB index. Since future wireless communication systems can support subcarrier spacing up to 480kHz, now the fifth generation mobile communication system has preliminarily determined that the number of subcarriers included in a PRB is 12, that is, the PRB bandwidth is up to 5760kHz, so that the PRB bandwidth is likely to be larger than the channel grid spacing, and when the terminal grid is larger, the indication resource overhead can be reduced by using the PRB index or PRB group index.

Example 6

This example presents a method of indicating the location of the marked frequency points of a virtual carrier with a relative PRB index.

Fig. 13 is a schematic diagram six of a channel structure according to an embodiment of the present invention, and as shown in fig. 13, a center frequency point of a virtual carrier is exactly on a boundary of a PRB, and neither a left boundary frequency point (or a lower boundary frequency point) nor a right boundary frequency point (or an upper boundary frequency point) is on the boundary of the PRB. The following description will first discuss an indication method by taking an example of indicating the position of the center frequency point of a virtual carrier.

The base station sends the position information of the center frequency point of the virtual carrier, wherein the position information can be borne on a physical broadcast channel, and the specific content of the position information is as follows: PRB index (e.g., m) corresponding to the center frequency bin of the virtual carrier, left and right offset indication.

Assuming that the base station indicates the left boundary frequency point (or the lower boundary frequency point) or the right boundary frequency point (or the upper boundary frequency point) of the virtual carrier, the location information needs to include, in addition to the PRB index (e.g., m) corresponding to the center frequency point of the virtual carrier and the left-right offset indication, an intra-PRB subcarrier index. And the terminal receives the position information of the central frequency point of the virtual carrier, thereby obtaining the position of the central frequency point of the virtual carrier. Of course, in order to make the standard uniform, the position information of the center frequency point of the virtual carrier may also include the subcarrier index in the PRB, but the subcarrier index in the PRB is fixed, that is, the last subcarrier in the PRB.

The method is also suitable for the base station to indicate the position of the left boundary frequency point (or the lower boundary frequency point), or the center frequency point, or the right boundary frequency point (or the upper boundary frequency point) of the physical carrier to the terminal.

Example 7

This example presents a method for indicating the location of the marked frequency points of a virtual carrier with a relative PRB group index.

Fig. 14 is a seventh schematic view of a channel structure according to an embodiment of the present invention, and as shown in fig. 14, each PRB group includes M PRBs. And the center frequency point of the virtual carrier is on the left side of the center frequency point of the synchronization signal, and the indication method is explained below by taking the position of the center frequency point of the virtual carrier as an example.

The base station sends the position information of the center frequency point of the virtual carrier, wherein the position information can be borne on a physical broadcast channel, and the specific content of the position information is as follows: a relative PRB group index (e.g. k) corresponding to a central frequency point of the virtual carrier, an intra-group PRB index, a subcarrier index within an intra-group PRB, and a left-right offset indication, for example, 1-bit information indicates left-right offset, where a value is-1, which indicates left offset.

The method is also suitable for the base station to indicate the positions of the left boundary frequency point (or the lower boundary frequency point) or the right boundary frequency point (or the upper boundary frequency point) of the virtual carrier, and the positions of the left boundary frequency point (or the lower boundary frequency point) or the center frequency point or the right boundary frequency point (or the upper boundary frequency point) of the physical carrier to the terminal.

Example 8

This example provides a method for a base station to indicate the positions of the marked frequency points of the virtual carrier and/or the physical carrier of the adjacent cell to the terminal of the cell.

The base station uses an RRC (Radio Resource Control) signaling to send the location information of the marked frequency points of the virtual carrier and/or the physical carrier of the neighboring cell, where the specific content of the location information may be any one of the above examples. The RRC signaling may be transmitted in a broadcast manner (e.g., via system information), or in a multicast manner (e.g., to a group of terminals), or in a unicast manner (e.g., to a specific terminal).

And the default is that the positions of the marking frequency points of the virtual carrier wave and/or the physical carrier wave of the cell and the adjacent cell are the same.

It should be added to all the above examples that when the physical broadcast channels are classified into a first type physical broadcast channel and a second type physical broadcast channel, the physical broadcast channel refers to the second type physical broadcast channel. The first type physical broadcast channel carries the position information of the marked frequency points of the second type physical broadcast channel. The first type management broadcast channel and the synchronous signal have a fixed time-frequency position relationship, such as the same central frequency point and bandwidth.

It should be noted that the physical broadcast channels in all the above examples are also applicable to fixed time-frequency resources, that is, the physical broadcast channels in all the above examples can be replaced by fixed time-frequency resources.

In the above example, when the position information of the marked frequency point is the same as the current frequency domain position, the relative channel number (or the relative channel group index, or the relative PRB group index) is 0.

The starting positions of the terminal grid and the channel grid are the same in the above example.

In the above example, when the terminal can obtain the correspondence (predefined, or indicated by RRC signaling) between the K channel numbers corresponding to the terminal grid and the actual channel numbers, the location information may also only include the channel number, or the relative channel group index and the intra-group channel index, or the relative PRB group index and the intra-group PRB index.

In the above example, the base station indicates a channel corresponding to the terminal grid to the terminal, and when multiple indications are given, the method for indicating the location information is the same, and the specific content changes with the indicated channel, which is not described herein again.

The situation when the current frequency domain position is other (for example, the marked frequency point position of the synchronization signal, or the marked frequency point position of the physical broadcast channel, or the marked frequency point position of the SS block, or the frequency domain position of the terminal grid corresponding to the synchronization signal, or the frequency domain position of a certain terminal grid) is similar to the situation of the central frequency point (or the left boundary frequency point (or the lower boundary frequency point), or the right boundary frequency point (or the upper boundary frequency point)) which is the synchronization signal, in addition, the situation that the current frequency domain position is not on the channel grid position is similar to the situation of the current frequency domain position on the channel grid position, and the description is omitted here.

By using the frequency domain resource indication method provided by the scheme, the base station can indicate other signals/channels except the synchronous and physical broadcast channels and the frequency domain position of the mark frequency of the physical carrier to the terminal so as to further complete information transmission between the base station and the terminal.

Example 4

The invention also provides a storage medium. Alternatively, in the present invention, the storage medium may be configured to store program codes for performing the steps of:

s1, sending the position information of the marked frequency points of the virtual carrier and/or the physical carrier to the second type node, wherein the position information is used for indicating the frequency domain position of the virtual carrier and/or the frequency domain position of the physical carrier.

Alternatively, in the present invention, the storage medium may include, but is not limited to: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.

Optionally, in this embodiment, the processor executes, according to a program code stored in the storage medium, to send the location information of the marked frequency point of the virtual carrier and/or the physical carrier to the second type node, where the location information is used to indicate the frequency domain location of the virtual carrier and/or the frequency domain location of the physical carrier.

Optionally, the specific examples in this document may refer to the examples described in the foregoing and alternative embodiments, which are not described herein again.

It will be apparent to those skilled in the art that the modules or steps of the present invention described above may be implemented by a general purpose computing device, they may be centralized on a single computing device or distributed across a network of multiple computing devices, and alternatively, they may be implemented by program code executable by a computing device, such that they may be stored in a storage device and executed by a computing device, and in some cases, the steps shown or described may be performed in an order different than that described herein, or they may be separately fabricated into individual integrated circuit modules, or multiple ones of them may be fabricated into a single integrated circuit module. Thus, the present invention is not limited to any specific combination of hardware and software.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for indicating a frequency domain location, comprising:

the method comprises the steps that a first type node sends position information of a marked frequency point of a virtual carrier and/or a physical carrier to a second type node, wherein the position information is used for indicating the frequency domain position of the virtual carrier and/or the frequency domain position of the physical carrier.

2. The method according to claim 1, wherein the position information of the marked frequency points comprises at least one of the following: a channel number; physical resource block PRB index.

3. The method of claim 1, wherein the location information is carried on a physical broadcast channel or on fixed time-frequency resources.

4. The method according to claim 3, wherein when the location information of the marked frequency point is carried on a physical broadcast channel, the physical broadcast channel refers to a second type of physical broadcast channel, and wherein when the physical broadcast channel is divided into a first type of physical broadcast channel and the second type of physical broadcast channel, the first type of physical broadcast channel carries the location information of the marked frequency point of the second type of physical broadcast channel.

5. The method according to claim 3, wherein when the location information of the labeled frequency points is carried on fixed time frequency resources, the fixed time frequency resources refer to second fixed time frequency resources, wherein the fixed time frequency resources are divided into first fixed time frequency resources and second fixed time frequency resources, and the first fixed time frequency resources carry the location information of the labeled frequency points of the second fixed time frequency resources.

6. The method according to claim 1, wherein the virtual carrier and/or the physical carrier comprises: and the position information of the marked frequency points of the virtual carrier wave and/or the physical carrier wave of the adjacent cell of the first type node is carried on a Radio Resource Control (RRC) signaling sent by the first type node.

7. The method according to claim 1 or 6, characterized in that the position information of the marked frequency points of the virtual carrier and/or the physical carrier of the first type node is the same as the position information of the marked frequency points of the virtual carrier and/or the physical carrier of the adjacent cell.

8. A method according to claim 1, wherein the virtual carrier is located within a physical carrier bandwidth for carrying signals or other channels other than synchronisation signals and physical broadcast channels, and wherein the information carried by the virtual carrier comprises at least one of: the downlink control information used for demodulating the random access response, the downlink control information used for demodulating the system information and the downlink control information used for demodulating the paging message.

9. The method of claim 2, wherein the channel number comprises at least one of:

10. The method of claim 9, wherein the relative channel number is an offset from a current frequency domain position in units of channel grid intervals, and/or wherein the relative channel group index is an offset from a current frequency domain position in units of a group of channel grid intervals.

11. The method of claim 2, wherein the PRB index comprises at least one of:

12. The method according to claim 11, wherein the relative PRB index is an offset from a current frequency-domain location in units of PRB bandwidths and/or the relative PRB group index is an offset from a current frequency-domain location in units of a group of PRB bandwidths.

13. The method according to claim 9 or 11, wherein the left and right offset indicates whether the position of the marked frequency point is lower or higher relative to the current frequency domain position.

14. The method of claim 9 or 11, wherein the current frequency domain position comprises at least one of: the method comprises the steps of marking frequency point positions of synchronous signals, marking frequency point positions of physical broadcast channels, marking frequency point positions of synchronous signal blocks SS blocks, frequency domain positions of terminal grids corresponding to the synchronous signals, frequency domain positions of the terminal grids, and marking frequency point positions of fixed time-frequency resources.

15. The method of claim 14, wherein the terminal grid positions are a subset of the channel grid positions, or wherein the terminal grid positions are completely different from the channel grid positions, or wherein a portion of the terminal grid positions are a subset of the channel grid positions and another portion of the terminal grid positions are completely different from the channel grid positions.

16. The method of claim 15, wherein the channel grid comprises at least one of:

n times the subcarrier spacing of the synchronization signal;

n times PRB of the synchronization signal;

wherein N is a positive integer.

17. The method of claim 1, wherein the marked frequency points comprise at least one of: a center frequency point, a left boundary frequency point or a lower boundary frequency point, and a right boundary frequency point or an upper boundary frequency point.

18. The method according to claim 2, wherein when the location information of the marked frequency point includes a channel number, the location information of the marked frequency point further includes: and taking the subcarrier interval of the synchronous signal as a unit, and making the frequency domain position corresponding to the channel number indicated in the position information of the marked frequency point offset leftwards and/or rightwards, or making the frequency domain position corresponding to the relative channel number indicated in the position information of the marked frequency point offset leftwards and/or rightwards, or making the frequency domain position corresponding to the intra-group channel index indicated in the position information of the marked frequency point offset leftwards and/or rightwards.

19. The method according to claim 2, wherein when the location information of the marked frequency point includes a PRB index, the location information of the marked frequency point further includes: subcarrier index within a PRB, or subcarrier index within a PRB within a group.

20. A method for indicating a frequency domain location, comprising:

and the second type node receives the position information of the marked frequency points of the virtual carrier and/or the physical carrier sent by the first type node, wherein the position information is used for indicating the frequency domain position of the virtual carrier and/or the frequency domain position of the physical carrier.

21. The method according to claim 20, wherein the position information of the marked frequency points comprises at least one of the following: a channel number; physical resource block PRB index.

22. The method of claim 20, wherein the location information is carried on a physical broadcast channel or on fixed time-frequency resources.

23. The method according to claim 22, wherein when the location information of the marked frequency point is carried on a physical broadcast channel, the physical broadcast channel refers to a second type of physical broadcast channel, and wherein when the physical broadcast channel is divided into a first type of physical broadcast channel and the second type of physical broadcast channel, the first type of physical broadcast channel carries the location information of the marked frequency point of the second type of physical broadcast channel.

24. The method according to claim 22, wherein when the location information of the labeled frequency points is carried on a fixed time frequency resource, the fixed time frequency resource refers to a second type of fixed time frequency resource, wherein the fixed time frequency resources are divided into a first type of fixed time frequency resource and the second type of fixed time frequency resource, and the first type of fixed time frequency resource carries the location information of the labeled frequency points of the second type of fixed time frequency resource.

25. The method according to claim 20, wherein the virtual carrier and/or the physical carrier comprises: and the position information of the marked frequency points of the virtual carrier wave and/or the physical carrier wave of the adjacent cell of the first type node is carried on a Radio Resource Control (RRC) signaling sent by the first type node.

26. The method according to claim 20 or 25, wherein the position information of the marked frequency points of the virtual carrier and/or the physical carrier of the first type node is the same as the position information of the marked frequency points of the virtual carrier and/or the physical carrier of the adjacent cell.

27. A method according to claim 20, wherein the virtual carrier is located within a physical carrier bandwidth for carrying signals or other channels other than synchronisation signals and physical broadcast channels, and wherein the information carried by the virtual carrier comprises at least one of: the downlink control information used for demodulating the random access response, the downlink control information used for demodulating the system information and the downlink control information used for demodulating the paging message.

28. The method of claim 21, wherein the channel number comprises at least one of:

29. The method of claim 28, wherein the relative channel number is an offset from a current frequency domain position in units of channel grid intervals, and/or wherein the relative channel group index is an offset from a current frequency domain position in units of a group of channel grid intervals.

30. The method of claim 21, wherein the PRB index comprises at least one of:

31. The method according to claim 30, wherein the relative PRB index is an offset from a current frequency-domain location in units of PRB bandwidths and/or the relative PRB group index is an offset from a current frequency-domain location in units of a group of PRB bandwidths.

32. The method according to claim 28 or 30, wherein the left and right offsets indicate whether the position of the marked frequency point is lower or higher relative to the current frequency domain position.

33. The method of claim 28 or 30, wherein the current frequency domain position comprises at least one of: the method comprises the steps of marking frequency point positions of synchronous signals, marking frequency point positions of physical broadcast channels, marking frequency point positions of synchronous signal blocks SS blocks, frequency domain positions of terminal grids corresponding to the synchronous signals, frequency domain positions of the terminal grids, and marking frequency point positions of fixed time-frequency resources.

34. The method of claim 33, characterized in that the terminal grid positions are a subset of the channel grid positions, or the terminal grid positions are completely different from the channel grid positions, or a part of the terminal grid positions are a subset of the channel grid positions and another part of the terminal grid positions are completely different from the channel grid positions.

35. The method of claim 34, wherein the channel grid comprises at least one of:

n times the subcarrier spacing of the synchronization signal;

n times PRB of the synchronization signal;

Wherein N is a positive integer.

36. The method of claim 20, wherein the marked frequency points comprise at least one of: a center frequency point, a left boundary frequency point or a lower boundary frequency point, and a right boundary frequency point or an upper boundary frequency point.

37. The method according to claim 21, wherein when the location information of the marked frequency point includes a channel number, the location information of the marked frequency point further includes: and taking the subcarrier interval of the synchronous signal as a unit, and making the frequency domain position corresponding to the channel number indicated in the position information of the marked frequency point offset leftwards and/or rightwards, or making the frequency domain position corresponding to the relative channel number indicated in the position information of the marked frequency point offset leftwards and/or rightwards, or making the frequency domain position corresponding to the intra-group channel index indicated in the position information of the marked frequency point offset leftwards and/or rightwards.

38. The method according to claim 21, wherein when the location information of the marked frequency point includes a PRB index, the location information of the marked frequency point further includes: subcarrier index within a PRB, or subcarrier index within a PRB within a group.

39. An apparatus for indicating a frequency domain position, applied to a base station, comprising:

the device comprises a sending module and a receiving module, wherein the sending module is used for sending the position information of the marked frequency points of the virtual carrier and/or the physical carrier to a terminal, and the position information is used for indicating the frequency domain position of the virtual carrier and/or the frequency domain position of the physical carrier.

40. The apparatus of claim 39, wherein the location information of the marked frequency points comprises at least one of: a channel number; physical resource block PRB index.

41. An apparatus for indicating a frequency domain position, applied to a terminal, comprising:

the receiving module is used for receiving the position information of the marked frequency points of the virtual carrier and/or the physical carrier sent by the base station, wherein the position information is used for indicating the frequency domain position of the virtual carrier and/or the frequency domain position of the physical carrier.

42. The apparatus according to claim 41, wherein the location information of the marked frequency points comprises at least one of: a channel number; physical resource block PRB index.