CN107889212B - Positioning method and device - Google Patents

Positioning method and device Download PDF

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CN107889212B
CN107889212B CN201710280615.8A CN201710280615A CN107889212B CN 107889212 B CN107889212 B CN 107889212B CN 201710280615 A CN201710280615 A CN 201710280615A CN 107889212 B CN107889212 B CN 107889212B
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time
symbol group
frequency resource
index
symbol
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CN107889212A (en
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刘锟
戴博
鲁照华
陈宪明
杨维维
方惠英
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ZTE Corp
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/04—Scheduled access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access

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

Abstract

The embodiment of the invention discloses a positioning method and equipment; the method can comprise the following steps: a first network element sends a positioning reference signal to a second network element; the positioning reference signals are transmitted on N frequency band resources, wherein N is an integer not less than 1; the positioning reference signal occupies at least one symbol group, wherein each symbol group occupies the same subcarrier in a frequency domain, and each symbol group is composed of a cyclic prefix CP and at least one symbol in a time domain.

Description

Positioning method and device
Cross Reference to Related Applications
The present application is filed and claimed as priority based on chinese patent application No. 201610878992.7 filed on 2016, 09, month 30, the entire contents of which are incorporated herein by reference.
Technical Field
The present invention relates to wireless communication technologies, and in particular, to a method and an apparatus for positioning.
Background
In the technology currently applied to the Internet Of Things (Internet Of Things), the NarrowBand Internet Of Things (NB-IoT, NarrowBand band Internet Of Things) has the characteristics Of wide coverage, many connections, low speed, low cost, low power consumption, excellent architecture and the like, so that the NarrowBand Internet Of Things (NB-IoT) can be widely applied to various vertical industries, such as remote meter reading, asset tracking, intelligent parking, intelligent agriculture and the like. Because the number of communication devices supported in the internet of things is large, and the number of types of terminals supported is also very large, a large number of terminals in the internet of things need to be effectively positioned, but an effective solution for the positioning is not provided by the NB-IoT technology at present.
Disclosure of Invention
In order to solve the foregoing technical problems, embodiments of the present invention are directed to a positioning method and apparatus, which are capable of positioning a large number of terminals in an NB-IoT technology.
The technical scheme of the invention is realized as follows:
in a first aspect, an embodiment of the present invention provides a method for positioning, where the method includes:
a first network element sends a positioning reference signal to a second network element; the positioning reference signals are transmitted on N frequency band resources, wherein N is an integer not less than 1; the positioning reference signal occupies at least one symbol group, wherein each symbol group occupies the same subcarrier in a frequency domain, and each symbol group is composed of a cyclic prefix CP and at least one symbol in a time domain.
In the above scheme, for eight symbol groups adjacent to each other in a time domain in a positioning reference signal sent by the first network element, resources occupied by the symbol groups 1 to 4 are included in a first time-frequency resource block, and resources occupied by the symbol groups 5 to 8 are included in a second time-frequency resource block;
the time domain length of the first time-frequency resource block is the time domain length corresponding to 4 symbol groups, the frequency domain length of the first time-frequency resource block is 12 subcarriers, the index of the initial subcarrier is k, and k is an integer greater than or equal to 0;
the time domain length of the second time frequency resource block is the time domain length corresponding to 4 symbol groups, the frequency domain length of the second time frequency resource block is 12 subcarriers, the index of an initial subcarrier is k + D, and D is the frequency domain interval between the initial subcarrier of the first time frequency resource block and the initial subcarrier of the second time frequency resource block;
and the time domain interval between the first time frequency resource block and the second time frequency resource block is T time units, and T is more than or equal to 0.
In the above scheme, the time-frequency resources occupied by the eight symbol groups satisfy a preset first mapping relationship.
In the scheme, the index of the positioning reference signal selected from the symbol group 1 to the symbol group 4 is n, wherein n is more than or equal to 0 and less than or equal to 11; the index of a positioning reference signal selected from the symbol groups 5 to 8 is m, wherein m is more than or equal to 0 and less than or equal to 11; and m ═ n.
In the scheme, the index of the positioning reference signal selected from the symbol group 1 to the symbol group 4 is n, wherein n is more than or equal to 0 and less than or equal to 11; the index of a positioning reference signal selected from the symbol groups 5 to 8 is m, wherein m is more than or equal to 0 and less than or equal to 11; where m + delta or m mod ((n + delta), 12), delta is a random number or a fixed value, and mod is the remainder.
In the above scheme, for eight symbol groups adjacent to each other in a time domain in a positioning reference signal sent by the first network element, resources occupied by the symbol groups 1 to 4 are included in a first time-frequency resource block, and resources occupied by the symbol groups 5 to 8 are included in a second time-frequency resource block;
the first time-frequency resource block is composed of A first time-frequency resource subblocks, wherein A is an integer greater than or equal to 1, the time domain length of each first time-frequency resource subblock is the time domain length corresponding to 4 symbol groups, and the frequency domain length of each first time-frequency resource subblock is 12 subcarriers;
the second time frequency resource block is composed of B second time frequency resource sub-blocks, wherein B is an integer greater than or equal to 1, the time domain length of the second time frequency resource sub-blocks is the time domain length corresponding to 4 symbol groups, and the frequency domain length of the second time frequency resource sub-blocks is 12 subcarriers;
the first time frequency resource block and the second time frequency resource block are separated by T time units in the time domain, and T is more than or equal to 0.
In the above scheme, the symbol groups 1 to 4 are configured in the same first time-frequency resource sub-block; the symbol groups 5 to 8 are configured in the same second time frequency resource sub-block.
In the scheme, the index of the positioning reference signal selected from the symbol group 1 to the symbol group 4 is n, wherein n is more than or equal to 0 and less than or equal to 11; the index of a positioning reference signal selected from the symbol groups 5 to 8 is m, wherein m is more than or equal to 0 and less than or equal to 11; and m ═ n.
In the scheme, the index of the positioning reference signal selected from the symbol group 1 to the symbol group 4 is n, wherein n is more than or equal to 0 and less than or equal to 11; the index of a positioning reference signal selected from the symbol groups 5 to 8 is m, wherein m is more than or equal to 0 and less than or equal to 11; where m + delta or m mod ((n + delta), 12), delta is a random number or a fixed value, and mod is the remainder.
In the above scheme, the structure of the first time-frequency resource sub-block satisfies a preset second mapping relationship.
In the above scheme, the structure of the second time-frequency resource sub-block satisfies a preset third mapping relationship.
In the above scheme, q ═ k + D is satisfied between the starting subcarrier index k of the first time-frequency resource subblock and the starting subcarrier index q of the second time-frequency resource subblock, where D is an integer.
In the above scheme, the first time-frequency resource block and the second time-frequency resource block are configured in a random access channel resource at a preset coverage enhancement level, or configured in a random access channel resource at a preset coverage enhancement level and on one frequency band resource.
In the above scheme, for the random access channel resource of the preset coverage enhancement level or the random access channel resource of the preset coverage enhancement level and on one of the frequency band resources, consecutive 24 subcarriers are occupied in the frequency domain and the starting subcarrier index is k, and a-B-1 and D-12.
In the above scheme, for the random access channel resource of the preset coverage enhancement level or the random access channel resource of the preset coverage enhancement level and on one of the frequency band resources, 36 consecutive subcarriers are occupied in the frequency domain and the starting subcarrier index is also k, and a ═ B ═ 1, and D ═ 24.
In the above scheme, for the random access channel resource of the preset coverage enhancement level or the random access channel resource of the preset coverage enhancement level and on one of the frequency band resources, consecutive 48 subcarriers are occupied in the frequency domain and the starting subcarrier index is also k, and a ═ B ═ 1, and D ═ 36.
In the above scheme, for the random access channel resource of the preset coverage enhancement level or the random access channel resource of the preset coverage enhancement level and on one of the frequency band resources, consecutive 48 subcarriers are occupied in the frequency domain and the starting subcarrier index is also k, and a ═ B ═ 2, and D ═ 24.
In the above scheme, for 16 symbol groups adjacent to each other in a time domain in a positioning reference signal sent by the first network element, resources occupied by the symbol groups 1 to 8 are included in a first time-frequency resource block, and resources occupied by the symbol groups 9 to 16 are included in a second time-frequency resource block;
the time domain length of the first time-frequency resource block is the time domain length corresponding to 8 symbol groups, the frequency domain length of the first time-frequency resource block is 12 subcarriers, the index of a starting subcarrier is k, and k is an integer greater than or equal to 0;
the time domain length of the second time frequency resource block is the time domain length corresponding to 8 symbol groups, the frequency domain length of the second time frequency resource block is 12 subcarriers, and the index of the initial subcarrier is k + D;
the first time frequency resource block and the second time frequency resource block are separated by T time units in time domain, and T is more than or equal to 0.
In the above scheme, the time-frequency resources occupied by the 16 symbol groups satisfy a preset fourth mapping relationship.
In the scheme, the index of the positioning reference signal selected from the symbol group 1 to the symbol group 8 is n, wherein n is more than or equal to 0 and less than or equal to 11; the index of a positioning reference signal selected from the symbol group 9 to the symbol group 16 is m, wherein m is more than or equal to 0 and less than or equal to 11; and m ═ n.
In the scheme, the index of the positioning reference signal selected from the symbol group 1 to the symbol group 8 is n, wherein n is more than or equal to 0 and less than or equal to 11; the index of a positioning reference signal selected from the symbol group 9 to the symbol group 16 is m, wherein m is more than or equal to 0 and less than or equal to 11; where m + delta or m mod ((n + delta), 12), delta is a random number or a fixed value, and mod is the remainder.
In the above scheme, for 16 symbol groups adjacent to each other in a time domain in a positioning reference signal sent by the first network element, resources occupied by the symbol groups 1 to 8 are included in a first time-frequency resource block, and resources occupied by the symbol groups 9 to 16 are included in a second time-frequency resource block;
the first time-frequency resource block is composed of A first time-frequency resource sub-blocks, wherein A is an integer greater than or equal to 1, the time domain length of each first time-frequency resource sub-block is the time domain length corresponding to 8 symbol groups, and the frequency domain length of each first time-frequency resource block is 12 subcarriers;
the second time frequency resource block is composed of B second time frequency resource sub-blocks, wherein B is an integer greater than or equal to 1, the time domain length of the second time frequency resource sub-blocks is the time domain length corresponding to 8 symbol groups, and the frequency domain length of the second time frequency resource block is 12 subcarriers;
the first time frequency resource block and the second time frequency resource block are separated by T time units in the time domain, and T is more than or equal to 0.
In the above scheme, the symbol groups 1 to 8 are configured in the same first time-frequency resource sub-block; the symbol groups 9 to 16 are configured in the same second time-frequency resource sub-block.
In the scheme, the index of the positioning reference signal selected from the symbol group 1 to the symbol group 8 is n, wherein n is more than or equal to 0 and less than or equal to 11; the index of a positioning reference signal selected from the symbol group 9 to the symbol group 16 is m, wherein m is more than or equal to 0 and less than or equal to 11; and m ═ n.
In the scheme, the index of the positioning reference signal selected from the symbol group 1 to the symbol group 8 is n, wherein n is more than or equal to 0 and less than or equal to 11; the index of a positioning reference signal selected from the symbol group 9 to the symbol group 16 is m, wherein m is more than or equal to 0 and less than or equal to 11; where m + delta or m mod ((n + delta), 12), delta is a random number or a fixed value, and mod is the remainder.
In the above scheme, the structure of the first time-frequency resource sub-block satisfies a preset fifth mapping relationship.
In the above scheme, the structure of the second time-frequency resource sub-block satisfies a preset sixth mapping relationship.
In the above scheme, q ═ k + D is satisfied between the starting subcarrier index k of the first time-frequency resource subblock and the starting subcarrier index q of the second time-frequency resource subblock, where D is an integer.
In the above scheme, the band resource includes P subcarrier sets, where P is greater than or equal to 1; every 4 symbol groups form a symbol group set, subcarriers occupied by symbol groups in the same symbol group set during transmission belong to the same subcarrier set, and each subcarrier set comprises 12 subcarriers.
In the above scheme, the subcarrier sets occupied by two symbol group sets adjacent to each other in the time domain during transmission are different.
In the above scheme, in 4 symbol groups of a single symbol group set, the subcarrier subsets occupied by the 1 st and 2 nd symbol groups during transmission are the same; the 3 rd symbol group and the 4 th symbol group occupy the same subcarrier subsets during transmission, and the subcarrier subsets occupied by the 1 st symbol group and the 2 nd symbol group during transmission are different from the subcarrier subsets occupied by the 3 rd symbol group and the 4 th symbol group during transmission; wherein, 1 of the subcarrier sets comprises 2 subcarrier subsets, and each subcarrier subset comprises 6 subcarriers.
In the above scheme, in two symbol group sets adjacent in the time domain, a subcarrier subset index occupied by the 1 st and 2 nd symbol groups in the first symbol group set when transmitting is different from a subcarrier subset index occupied by the 1 st and 2 nd symbol groups in the second symbol group set when transmitting; and the subcarrier subset indexes occupied by the 3 rd and 4 th symbol groups in the first symbol group set when in transmission are different from the subcarrier subset indexes occupied by the 3 rd and 4 th symbol groups in the second symbol group set when in transmission.
In the above scheme, in two symbol group sets adjacent in the time domain, the subcarrier subset index occupied by the 1 st and 2 nd symbol groups in the first symbol group set when transmitting is the same as the subcarrier subset index occupied by the 3 rd and 4 th symbol groups in the second symbol group set when transmitting; and the subcarrier subset indexes occupied by the 3 rd and 4 th symbol groups in the first symbol group set when being transmitted are the same as the subcarrier subset indexes occupied by the 1 st and 2 nd symbol groups in the second symbol group set when being transmitted.
In a second aspect, an embodiment of the present invention provides a method for positioning, where the method includes:
a first network element sends a positioning reference signal to a second network element;
the resources of the positioning reference signal are configured in P time frequency resource sets, the index is P, and P is more than or equal to 0 and less than or equal to P-1;
the P time frequency resource sets are configured on N frequency band resources, wherein P is an integer not less than 1, and N is an integer not less than 1.
In the above scheme, the time-frequency resource set is a random access channel resource satisfying a preset coverage enhancement level; alternatively, the first and second electrodes may be,
the time frequency resource set is a random access channel resource which meets a preset coverage enhancement level and is on one frequency band resource.
In the above scheme, the P time-frequency resource sets correspond to P different coverage enhancement levels.
In the foregoing solution, before the first network element sends the positioning reference signal to the second network element, the method further includes:
the first network element selects G (p) symbol group sets from the time frequency resource set with the index of p as the sending resources of the positioning reference signals;
wherein, the single symbol group set comprises 4 symbol groups; each symbol group occupies the same subcarriers in the frequency domain.
In the foregoing solution, the selecting, by the first network element, g (p) symbol group sets from the time-frequency resource set with an index of p as transmission resources of a positioning reference signal specifically includes:
the first network element selecting the first G (p) symbol group sets of the R (p) symbol group sets; or the like, or, alternatively,
the first network element selecting a set of G (p) symbol groups arranged at the rearmost among the R (p) symbol group sets; or the like, or, alternatively,
the first network element selects G (p) symbol group sets from R (p) symbol group sets according to a predetermined rule;
wherein G (p) is not more than R (p).
In the foregoing solution, the selecting, by the first network element, g (p) symbol group sets from the time-frequency resource set with an index of p as transmission resources of a positioning reference signal specifically includes:
the first network element selects g (p) ═ a (p) xr (p) sets of the symbol groups. Wherein, A (p) is not less than 1, R (p) is the repeated transmission times of the random access channel supported on the random access channel resource with index p.
In the above scheme, the resource of the positioning reference signal is configured in a non-contention random access channel resource of the random access channel resource.
In the above scheme, the frequency domain positions of the P time-frequency resource sets are different;
or, the time domain positions of the P time frequency resource sets are not overlapped.
In the above scheme, the P time-frequency resource sets include at least one of:
k with same coverage enhancement leveljA set of time-frequency resources; where j is the coverage enhancement level index, KjNot less than 2; and said K isjBits of a time frequency resource setOn different frequency band resources;
covering C time frequency resource sets with different enhancement levels; wherein c is greater than or equal to 2; the C time frequency resource sets are positioned on the same frequency band resource;
j time frequency resource sets covering the enhancement levels, wherein J is a covering enhancement level index, J is more than or equal to 0 and less than or equal to J-1, the number of the time frequency resources covering the enhancement levels and is J is K, and K is more than or equal to 2 and less than or equal to P; the K time frequency resource sets with the coverage enhancement level j are positioned on different frequency band resources.
In the foregoing solution, before the first network element sends the positioning reference signal to the second network element, the method further includes:
the first network element selects G (p) symbol group sets from the time frequency resource set with the index of p as the sending resources of the positioning reference signals;
wherein, the single symbol group set comprises 4 symbol groups; each symbol group occupies the same subcarriers in the frequency domain.
In the foregoing solution, the selecting, by the first network element, g (p) symbol group sets from the time-frequency resource set with an index of p as transmission resources of a positioning reference signal specifically includes:
the first network element selecting the first G (p) symbol group sets of the R (p) symbol group sets; or the like, or, alternatively,
the first network element selecting a set of G (p) symbol groups arranged at the rearmost among the R (p) symbol group sets; or the like, or, alternatively,
the first network element selects G (p) symbol group sets from R (p) symbol group sets according to a predetermined rule;
wherein G (p) is not more than R (p).
In the foregoing solution, the selecting, by the first network element, g (p) symbol group sets from the time-frequency resource set with an index of p as transmission resources of a positioning reference signal specifically includes:
the first network element selects g (p) ═ a (p) xr (p) sets of the symbol groups. Wherein A (p) is not less than 1; r (p) is the number of repeated transmissions of a random access channel supported on the random access channel resource with index p.
In the above scheme, the resource of the positioning reference signal is configured in a non-contention random access channel resource of the random access channel resource.
In a third aspect, an embodiment of the present invention provides a network element, where the network element includes a first sending module, configured to send a positioning reference signal to an opposite-end network element; the positioning reference signals are transmitted on N frequency band resources, wherein N is an integer not less than 1; the positioning reference signal occupies at least one symbol group, wherein each symbol group occupies the same subcarrier in a frequency domain, and each symbol group is composed of a cyclic prefix CP and at least one symbol in a time domain.
In the above scheme, for eight symbol groups adjacent to each other in the time domain in the positioning reference signal sent by the first sending module, resources occupied by the symbol groups 1 to 4 are included in a first time-frequency resource block, and resources occupied by the symbol groups 5 to 8 are included in a second time-frequency resource block;
the time domain length of the first time-frequency resource block is the time domain length corresponding to 4 symbol groups, the frequency domain length of the first time-frequency resource block is 12 subcarriers, the index of the initial subcarrier is k, and k is an integer greater than or equal to 0;
the time domain length of the second time frequency resource block is the time domain length corresponding to 4 symbol groups, the frequency domain length of the second time frequency resource block is 12 subcarriers, the index of an initial subcarrier is k + D, and D is the frequency domain interval between the initial subcarrier of the first time frequency resource block and the initial subcarrier of the second time frequency resource block;
and the time domain interval between the first time frequency resource block and the second time frequency resource block is T time units, and T is more than or equal to 0.
In the above scheme, for eight symbol groups adjacent to each other in the time domain in the positioning reference signal sent by the first sending module, resources occupied by the symbol groups 1 to 4 are included in a first time-frequency resource block, and resources occupied by the symbol groups 5 to 8 are included in a second time-frequency resource block;
the first time-frequency resource block is composed of A first time-frequency resource subblocks, wherein A is an integer greater than or equal to 1, the time domain length of each first time-frequency resource subblock is the time domain length corresponding to 4 symbol groups, and the frequency domain length of each first time-frequency resource subblock is 12 subcarriers;
the second time frequency resource block is composed of B second time frequency resource sub-blocks, wherein B is an integer greater than or equal to 1, the time domain length of the second time frequency resource sub-blocks is the time domain length corresponding to 4 symbol groups, and the frequency domain length of the second time frequency resource sub-blocks is 12 subcarriers;
the first time frequency resource block and the second time frequency resource block are separated by T time units in the time domain, and T is more than or equal to 0.
In the above scheme, for 16 symbol groups adjacent to each other in the time domain in the positioning reference signal sent by the first sending module, resources occupied by the symbol groups 1 to 8 are included in a first time-frequency resource block, and resources occupied by the symbol groups 9 to 16 are included in a second time-frequency resource block;
the time domain length of the first time-frequency resource block is the time domain length corresponding to 8 symbol groups, the frequency domain length of the first time-frequency resource block is 12 subcarriers, the index of a starting subcarrier is k, and k is an integer greater than or equal to 0;
the time domain length of the second time frequency resource block is the time domain length corresponding to 8 symbol groups, the frequency domain length of the second time frequency resource block is 12 subcarriers, and the index of the initial subcarrier is k + D;
the first time frequency resource block and the second time frequency resource block are separated by T time units in time domain, and T is more than or equal to 0.
In the above scheme, for 16 symbol groups adjacent to each other in the time domain in the positioning reference signal sent by the first sending module, resources occupied by the symbol groups 1 to 8 are included in a first time-frequency resource block, and resources occupied by the symbol groups 9 to 16 are included in a second time-frequency resource block;
the first time-frequency resource block is composed of A first time-frequency resource sub-blocks, wherein A is an integer greater than or equal to 1, the time domain length of each first time-frequency resource sub-block is the time domain length corresponding to 8 symbol groups, and the frequency domain length of each first time-frequency resource block is 12 subcarriers;
the second time frequency resource block is composed of B second time frequency resource sub-blocks, wherein B is an integer greater than or equal to 1, the time domain length of the second time frequency resource sub-blocks is the time domain length corresponding to 8 symbol groups, and the frequency domain length of the second time frequency resource block is 12 subcarriers;
the first time frequency resource block and the second time frequency resource block are separated by T time units in the time domain, and T is more than or equal to 0.
In the above scheme, the band resource includes P subcarrier sets, where P is greater than or equal to 1; every 4 symbol groups form a symbol group set, subcarriers occupied by symbol groups in the same symbol group set during transmission belong to the same subcarrier set, and each subcarrier set comprises 12 subcarriers.
In a fourth aspect, an embodiment of the present invention provides a network element, where the network element includes: a second sending module, configured to send a positioning reference signal to an opposite-end network element;
the resources of the positioning reference signal are configured in P time frequency resource sets, the index is P, and P is more than or equal to 0 and less than or equal to P-1;
the P time frequency resource sets are configured on N frequency band resources, wherein P is an integer not less than 1, and N is an integer not less than 1.
In the above solution, the network element further includes a first selecting module, configured to select, from the time-frequency resource set with an index of p, g (p) symbol group sets as transmission resources of a positioning reference signal;
wherein, the single symbol group set comprises 4 symbol groups; each symbol group occupies the same subcarriers in the frequency domain, and each symbol group is composed of a cyclic prefix CP and 5 symbols in the time domain.
In the foregoing scheme, the first selecting module is specifically configured to:
selecting the first G (p) symbol group sets in the R (p) symbol group sets; or the like, or, alternatively,
selecting the G (p) symbol group sets arranged at the rearmost from the R (p) symbol group sets; or the like, or, alternatively,
selecting G (p) symbol group sets from the R (p) symbol group sets according to a predetermined rule; wherein G (p) is not more than R (p).
In the foregoing scheme, the first selecting module is specifically configured to:
selecting g (p) × a (p) × r (p) sets of the symbol groups. Wherein, A (p) is not less than 1, R (p) is the repeated transmission times of the random access channel supported on the random access channel resource with index p.
In the above scheme, the P time-frequency resource sets include at least one of:
k with same coverage enhancement leveljA set of time-frequency resources; where j is the coverage enhancement level index, KjNot less than 2; and said K isjThe time frequency resource sets are positioned on different frequency band resources;
covering C time frequency resource sets with different enhancement levels; wherein c is greater than or equal to 2; the C time frequency resource sets are positioned on the same frequency band resource;
j time frequency resource sets covering the enhancement levels, wherein J is a covering enhancement level index, J is more than or equal to 0 and less than or equal to J-1, the number of the time frequency resources covering the enhancement levels and is J is K, and K is more than or equal to 2 and less than or equal to P; the K time frequency resource sets with the coverage enhancement level j are positioned on different frequency band resources.
In the foregoing solution, the network element further includes a second selecting module, configured to select, from the time-frequency resource set with an index of p, g (p) symbol group sets as transmission resources of the positioning reference signal;
wherein, the single symbol group set comprises 4 symbol groups; each symbol group occupies the same subcarriers in the frequency domain.
In the foregoing scheme, the second selecting module is configured to:
selecting the first G (p) symbol group sets in the R (p) symbol group sets; or the like, or, alternatively,
selecting the G (p) symbol group sets arranged at the rearmost from the R (p) symbol group sets; or the like, or, alternatively,
selecting G (p) symbol group sets from the R (p) symbol group sets according to a predetermined rule;
wherein G (p) is not more than R (p).
In the above scheme, the second selecting module is configured to select g (p) ═ a (p) × r (p) symbol group sets. Wherein A (p) is not less than 1; r (p) is the number of repeated transmissions of a random access channel supported on the random access channel resource with index p.
The embodiment of the invention provides a positioning method and a positioning device, which can realize positioning of a huge number of terminals in NB-IoT technology by sending a positioning reference signal to a second network element through a first network element.
Drawings
Fig. 1 is a schematic diagram of a positioning method according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a symbol group structure according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a positioning reference signal resource allocation according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a time-frequency resource sub-block according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of another time-frequency resource sub-block according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a first time-frequency resource sub-block and a second time-frequency resource sub-block according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of another first time-frequency resource sub-block and a second time-frequency resource sub-block according to an embodiment of the present invention;
fig. 8 is a schematic diagram of another positioning reference signal resource allocation according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of another time-frequency resource sub-block according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of another time-frequency resource sub-block according to an embodiment of the present invention;
fig. 11 is a schematic structural diagram of another first time-frequency resource sub-block and a second time-frequency resource sub-block according to an embodiment of the present invention;
fig. 12 is a schematic diagram of resource allocation of a symbol group set according to an embodiment of the present invention;
FIG. 13 is a schematic diagram of another positioning method according to an embodiment of the present invention;
fig. 14 is a schematic diagram of resource allocation of a random access channel according to an embodiment of the present invention;
fig. 15 is a schematic diagram of another random access channel resource allocation provided in the embodiment of the present invention;
FIG. 16 is a diagram illustrating resource allocation of a random access channel according to another embodiment of the present invention
Fig. 17 is a schematic structural diagram of a network element according to an embodiment of the present invention;
fig. 18 is a schematic structural diagram of another network element according to an embodiment of the present invention;
fig. 19 is a schematic structural diagram of another network element according to an embodiment of the present invention;
fig. 20 is a schematic structural diagram of another network element according to an embodiment of the present invention.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Example one
Referring to fig. 1, which illustrates a method for positioning according to an embodiment of the present invention, the method may include:
s101: a first network element sends a positioning reference signal to a second network element;
the positioning reference signals are transmitted on N frequency band resources, wherein N is an integer not less than 1; the positioning reference signal occupies at least one symbol group, wherein each symbol group occupies the same subcarrier in a frequency domain, and each symbol group is composed of a cyclic prefix CP and at least one symbol in a time domain.
It should be noted that, in fig. 1, the first network element may be a terminal or a base station, and accordingly, when the first network element is a terminal, the second network element is a base station; when the first network element is a base station, the second network element is a terminal; that is, the positioning reference signal may be transmitted by the base station to the terminal, or the positioning reference signal may be transmitted by the terminal to the base station. For the positioning reference signal, the terminal or the base station is enabled to measure the positioning reference signal, and then the positioning process of the terminal position is completed.
For the technical solution of fig. 1, the present embodiment is described in detail by the following specific embodiments, and specific scenarios in the following specific embodiments are as follows:
1 frequency band resource is configured in the NB-IoT system, and the size of the frequency band resource is 180 kHz. Setting the first network element as a terminal, the second network element as a base station, and the positioning reference signal occupying one or more symbol groups (symbol groups). The subcarriers occupied by each symbol group in the frequency domain are the same and the positioning reference signal subcarrier spacing af is 3.75 kHz. Each symbol group is formed by one Cyclic Prefix (CP) and K ═ 5 symbols (symbol) in the time domain, as shown in fig. 2.
Since the positioning reference signal subcarrier spacing Δ f is 3.75kHz, one symbol length
Figure BDA0001279398830000131
Figure BDA0001279398830000132
When the CP length is 0.2667ms, the time domain length of each symbol group is 0.2667+0.2667 × 5 ═ 1.6 ms;
when the CP length is 0.0667ms, the time domain length of each symbol group is 0.0667+0.2667 × 5 ═ 1.4 ms;
in the following specific embodiment of this embodiment, the CP length is set to 0.2667ms, and the time domain length of the symbol group is 1.6 ms.
Detailed description of the preferred embodiment
In this embodiment, for 8 symbol groups adjacent to each other in the time domain in the positioning reference signal, taking the symbol group 1 to the symbol group 8 as an example, in the 8 symbol groups, resources occupied by the symbol group 1 to the symbol group 4 are included in the time frequency resource block 1, and resources occupied by the symbol group 5 to the symbol group 8 are included in the time frequency resource block 2. It should be noted that the positioning reference signal may include more than one 8 symbol groups. The 8 symbol groups in this specific embodiment may be 8 symbol groups located at the transmission start end of the positioning reference signal, or 8 symbol groups subsequent to the transmission start end of the positioning reference signal, and so on.
Wherein, the time domain length of the time frequency resource block 1 is 4 symbol group lengths, the frequency domain length of the time frequency resource block 1 is 12 subcarriers, and the initial subcarrier index is k (k is an integer greater than or equal to 0);
the time domain length of the time frequency resource block 2 is 4 symbol group lengths, the frequency domain length of the time frequency resource block 2 is 12 subcarriers, and the index of the initial subcarrier is k + D (k is an integer greater than or equal to 0); wherein D is a frequency domain interval between the first time-frequency resource block and the second time-frequency resource block, and may specifically be a positive integer or a negative integer or 0;
the time interval between the time-frequency resource block 1 and the time-frequency resource block 2 in the time domain is T time units, and in the specific embodiment, T is 0; the meaning of the time unit includes at least one of: second, millisecond, microsecond, nanosecond, time domain length of subframe (subframe), time domain length of transmission symbol, etc.; this is not particularly limited in this embodiment and the following embodiments;
referring to fig. 3, which shows a schematic diagram of time-frequency resources occupied by the eight symbol groups when the first network element sends the positioning reference signal in this embodiment, in the diagram, the positioning reference signal indexes selected from the symbol group 1 to the symbol group 4 are 0, and the positioning reference signal indexes selected from the symbol group 5 to the symbol group 8 are 0; it can be understood that the time-frequency resources occupied by the eight symbol groups satisfy a preset first mapping relationship, where the first mapping relationship is specifically:
a positioning reference signal with an index of 0, wherein a 1 st symbol group occupies a subcarrier index k, a 2 nd symbol group occupies a subcarrier index k +1, a 3 rd symbol group occupies a subcarrier index k +7, a 4 th symbol group occupies a subcarrier index k +6, a 5 th symbol group occupies a subcarrier index k + D +6, a 6 th symbol group occupies a subcarrier index k + D +7, a 7 th symbol group occupies a subcarrier index k + D +1, and an 8 th symbol group occupies a subcarrier index k + D;
a positioning reference signal with an index of 1, wherein a 1 st symbol group occupies a subcarrier index k +1, a 2 nd symbol group occupies a subcarrier index k, a 3 rd symbol group occupies a subcarrier index k +6, a 4 th symbol group occupies a subcarrier index k +7, a 5 th symbol group occupies a subcarrier index k + D +7, a 6 th symbol group occupies a subcarrier index k + D +6, a 7 th symbol group occupies a subcarrier index k + D, and an 8 th symbol group occupies a subcarrier index k + D + 1;
a positioning reference signal with an index of 2, wherein a 1 st symbol group occupies a subcarrier index k +2, a 2 nd symbol group occupies a subcarrier index k +3, a 3 rd symbol group occupies a subcarrier index k +9, a 4 th symbol group occupies a subcarrier index k +8, a 5 th symbol group occupies a subcarrier index k + D +8, a 6 th symbol group occupies a subcarrier index k + D +9, a 7 th symbol group occupies a subcarrier index k + D +3, and an 8 th symbol group occupies a subcarrier index k + D + 4;
a positioning reference signal with an index of 3, wherein a 1 st symbol group occupies a subcarrier index k +3, a 2 nd symbol group occupies a subcarrier index k +2, a 3 rd symbol group occupies a subcarrier index k +8, a 4 th symbol group occupies a subcarrier index k +9, a 5 th symbol group occupies a subcarrier index k + D +9, a 6 th symbol group occupies a subcarrier index k + D +8, a 7 th symbol group occupies a subcarrier index k + D +4, and an 8 th symbol group occupies a subcarrier index k + D + 3;
a positioning reference signal with an index of 4, wherein a 1 st symbol group occupies a subcarrier index k +4, a 2 nd symbol group occupies a subcarrier index k +5, a 3 rd symbol group occupies a subcarrier index k +11, a 4 th symbol group occupies a subcarrier index k +10, a 5 th symbol group occupies a subcarrier index k + D +10, a 6 th symbol group occupies a subcarrier index k + D +11, a 7 th symbol group occupies a subcarrier index k + D +5, and an 8 th symbol group occupies a subcarrier index k + D + 4;
a positioning reference signal with an index of 5, wherein a 1 st symbol group occupies a subcarrier index k +5, a 2 nd symbol group occupies a subcarrier index k +4, a 3 rd symbol group occupies a subcarrier index k +10, a 4 th symbol group occupies a subcarrier index k +11, a 5 th symbol group occupies a subcarrier index k + D +11, a 6 th symbol group occupies a subcarrier index k + D +10, a 7 th symbol group occupies a subcarrier index k + D +4, and an 8 th symbol group occupies a subcarrier index k + D + 5;
a positioning reference signal with an index of 6, wherein a 1 st symbol group occupies a subcarrier index k +6, a 2 nd symbol group occupies a subcarrier index k +7, a 3 rd symbol group occupies a subcarrier index k +1, a 4 th symbol group occupies a subcarrier index k, a 5 th symbol group occupies a subcarrier index k + D, a 6 th symbol group occupies a subcarrier index k + D +1, a 7 th symbol group occupies a subcarrier index k + D +7, and an 8 th symbol group occupies a subcarrier index k + D + 6;
a positioning reference signal with an index of 7, wherein a 1 st symbol group occupies a subcarrier index k +7, a 2 nd symbol group occupies a subcarrier index k +6, a 3 rd symbol group occupies a subcarrier index k, a 4 th symbol group occupies a subcarrier index k +1, a 5 th symbol group occupies a subcarrier index k + D +1, a 6 th symbol group occupies a subcarrier index k + D, a 7 th symbol group occupies a subcarrier index k + D +6, and an 8 th symbol group occupies a subcarrier index k + D + 7;
a positioning reference signal with an index of 8, wherein a 1 st symbol group occupies a subcarrier index k +8, a 2 nd symbol group occupies a subcarrier index k +9, a 3 rd symbol group occupies a subcarrier index k +3, a 4 th symbol group occupies a subcarrier index k +2, a 5 th symbol group occupies a subcarrier index k + D +2, a 6 th symbol group occupies a subcarrier index k + D +3, a 7 th symbol group occupies a subcarrier index k + D +9, and an 8 th symbol group occupies a subcarrier index k + D + 8;
a positioning reference signal with an index of 9, wherein a 1 st symbol group occupies a subcarrier index k +9, a 2 nd symbol group occupies a subcarrier index k +8, a 3 rd symbol group occupies a subcarrier index k +2, a 4 th symbol group occupies a subcarrier index k +3, a 5 th symbol group occupies a subcarrier index k + D +3, a 6 th symbol group occupies a subcarrier index k + D +2, a 7 th symbol group occupies a subcarrier index k + D +8, and an 8 th symbol group occupies a subcarrier index k + D + 9;
a positioning reference signal with an index of 10, wherein a 1 st symbol group occupies a subcarrier index k +10, a 2 nd symbol group occupies a subcarrier index k +11, a 3 rd symbol group occupies a subcarrier index k +5, a 4 th symbol group occupies a subcarrier index k +4, a 5 th symbol group occupies a subcarrier index k + D +4, a 6 th symbol group occupies a subcarrier index k + D +5, a 7 th symbol group occupies a subcarrier index k + D +11, and an 8 th symbol group occupies a subcarrier index k + D + 10;
the index is 11 of the positioning reference signal, the 1 st symbol group occupies a subcarrier index k +11, the 2 nd symbol group occupies a subcarrier index k +10, the 3 rd symbol group occupies a subcarrier index k +4, the 4 th symbol group occupies a subcarrier index k +5, the 5 th symbol group occupies a subcarrier index k + D +5, the 6 th symbol group occupies a subcarrier index k + D +4, the 7 th symbol group occupies a subcarrier index k + D +10, and the 8 th symbol group occupies a subcarrier index k + D + 11.
In addition, the positioning reference signal indexes selected from the symbol group 1 to the symbol group 4 are n ═ 0, and the positioning reference signal indexes selected from the symbol group 5 to the symbol group 8 are m ═ mod ((n + delta), 12); where delta is a random number, and in this embodiment, delta is 2, then the index of the positioning reference signal selected from the symbol group 5 to the symbol group 8 is m is 2. Referring to fig. 3, that is, the 1 st symbol group occupies a subcarrier index k, the 2 nd symbol group occupies a subcarrier index k +1, the 3 rd symbol group occupies a subcarrier index k +7, the 4 th symbol group occupies a subcarrier index k +6, the 5 th symbol group occupies a subcarrier index k + D +8, the 6 th symbol group occupies a subcarrier index k + D +9, the 7 th symbol group occupies a subcarrier index k + D +3, and the 8 th symbol group occupies a subcarrier index k + D + 2.
Detailed description of the invention
In this embodiment, for 8 symbol groups adjacent to each other in the time domain in the positioning reference signal, taking the symbol group 1 to the symbol group 8 as an example, in the 8 symbol groups, resources occupied by the symbol group 1 to the symbol group 4 are included in the time frequency resource block 1, and resources occupied by the symbol group 5 to the symbol group 8 are included in the time frequency resource block 2. It should be noted that the positioning reference signal may include more than one 8 symbol groups. The 8 symbol groups in this specific embodiment may be 8 symbol groups located at the transmission start end of the positioning reference signal, or 8 symbol groups subsequent to the transmission start end of the positioning reference signal, and so on.
The time-frequency resource block 1 is composed of a (a ═ 1) time-frequency resource sub-blocks 1, where the time domain length of the time-frequency resource sub-block 1 is 4 symbol group length, the frequency domain length of the time-frequency resource sub-block 1 is 12 subcarriers, and the structure of the time-frequency resource sub-block 1 is shown in fig. 4. A starting subcarrier index is k (k is an integer greater than or equal to 0);
the time-frequency resource block 2 is composed of B (B ═ 1) time-frequency resource sub-blocks 2, where the time domain length of the time-frequency resource sub-block 2 is 4 symbol group length, the frequency domain length of the time-frequency resource sub-block 2 is 12 subcarriers, and the structure of the time-frequency resource sub-block 2 is shown in fig. 5. The starting subcarrier index is q (q is an integer greater than or equal to 0);
the time interval between the time-frequency resource block 1 and the time-frequency resource block 2 in the time domain is T, and in this specific embodiment, T is 0;
in this embodiment, q is k + D, and D is the interval between the starting subcarriers of the time-frequency resource sub-block 1 and the time-frequency resource sub-block 2.
Specifically, for the first time-frequency resource sub-block shown in fig. 4, the structure thereof satisfies a predetermined second mapping relationship, where the predetermined second mapping relationship is:
a positioning reference signal with an index of 0, wherein a 1 st symbol group occupies a subcarrier index k, a 2 nd symbol group occupies a subcarrier index k +1, a 3 rd symbol group occupies a subcarrier index k +7, and a 4 th symbol group occupies a subcarrier index k + 6;
a positioning reference signal with an index of 1, wherein a 1 st symbol group occupies a subcarrier index k +1, a 2 nd symbol group occupies a subcarrier index k, a 3 rd symbol group occupies a subcarrier index k +6, and a 4 th symbol group occupies a subcarrier index k + 7;
a positioning reference signal with an index of 2, wherein a 1 st symbol group occupies a subcarrier index k +2, a 2 nd symbol group occupies a subcarrier index k +3, a 3 rd symbol group occupies a subcarrier index k +9, and a 4 th symbol group occupies a subcarrier index k + 8;
a positioning reference signal with an index of 3, wherein a 1 st symbol group occupies a subcarrier index k +3, a 2 nd symbol group occupies a subcarrier index k +2, a 3 rd symbol group occupies a subcarrier index k +8, and a 4 th symbol group occupies a subcarrier index k + 9;
a positioning reference signal with an index of 4, wherein a 1 st symbol group occupies a subcarrier index k +4, a 2 nd symbol group occupies a subcarrier index k +5, a 3 rd symbol group occupies a subcarrier index k +11, and a 4 th symbol group occupies a subcarrier index k + 10;
a positioning reference signal with an index of 5, wherein a 1 st symbol group occupies a subcarrier index k +5, a 2 nd symbol group occupies a subcarrier index k +4, a 3 rd symbol group occupies a subcarrier index k +10, and a 4 th symbol group occupies a subcarrier index k + 11;
a positioning reference signal with an index of 6, wherein a 1 st symbol group occupies a subcarrier index k +6, a 2 nd symbol group occupies a subcarrier index k +7, a 3 rd symbol group occupies a subcarrier index k +1, and a 4 th symbol group occupies a subcarrier index k;
a positioning reference signal with an index of 7, wherein a 1 st symbol group occupies a subcarrier index k +7, a 2 nd symbol group occupies a subcarrier index k +6, a 3 rd symbol group occupies a subcarrier index k, and a 4 th symbol group occupies a subcarrier index k + 1;
a positioning reference signal with an index of 8, wherein a 1 st symbol group occupies a subcarrier index k +8, a 2 nd symbol group occupies a subcarrier index k +9, a 3 rd symbol group occupies a subcarrier index k +3, and a 4 th symbol group occupies a subcarrier index k + 2;
a positioning reference signal with an index of 9, wherein a 1 st symbol group occupies a subcarrier index k +9, a 2 nd symbol group occupies a subcarrier index k +8, a 3 rd symbol group occupies a subcarrier index k +2, and a 4 th symbol group occupies a subcarrier index k + 3;
a positioning reference signal with an index of 10, wherein a 1 st symbol group occupies a subcarrier index k +10, a 2 nd symbol group occupies a subcarrier index k +11, a 3 rd symbol group occupies a subcarrier index k +5, and a 4 th symbol group occupies a subcarrier index k + 4;
the index of the positioning reference signal is 11, the 1 st symbol group occupies a subcarrier index k +11, the 2 nd symbol group occupies a subcarrier index k +10, the 3 rd symbol group occupies a subcarrier index k +4, and the 4 th symbol group occupies a subcarrier index k + 5.
Specifically, for the first time-frequency resource sub-block shown in fig. 5, the structure thereof satisfies a predetermined third mapping relationship, where the predetermined third mapping relationship is:
a positioning reference signal with an index of 0, a subcarrier index q +6 occupied by a 5 th symbol group, a subcarrier index q +7 occupied by a 6 th symbol group, a subcarrier index q +1 occupied by a 7 th symbol group, and a subcarrier index q occupied by an 8 th symbol group;
a positioning reference signal with an index of 1, wherein a 5 th symbol group occupies a subcarrier index q +7, a 6 th symbol group occupies a subcarrier index q +6, a 7 th symbol group occupies a subcarrier index q, and an 8 th symbol group occupies a subcarrier index q + 1;
a positioning reference signal with an index of 2, a subcarrier index q +8 occupied by a 5 th symbol group, a subcarrier index q +9 occupied by a 6 th symbol group, a subcarrier index q +3 occupied by a 7 th symbol group, and a subcarrier index q +4 occupied by an 8 th symbol group;
a positioning reference signal with an index of 3, a subcarrier index q +9 occupied by a 5 th symbol group, a subcarrier index q +8 occupied by a 6 th symbol group, a subcarrier index q +4 occupied by a 7 th symbol group, and a subcarrier index q +3 occupied by an 8 th symbol group;
a positioning reference signal with an index of 4, a subcarrier index q +10 occupied by a 5 th symbol group, a subcarrier index q +11 occupied by a 6 th symbol group, a subcarrier index q +5 occupied by a 7 th symbol group, and a subcarrier index q +4 occupied by an 8 th symbol group;
a positioning reference signal with an index of 5, a subcarrier index q +11 occupied by a 5 th symbol group, a subcarrier index q +10 occupied by a 6 th symbol group, a subcarrier index q +4 occupied by a 7 th symbol group, and a subcarrier index q +5 occupied by an 8 th symbol group;
a positioning reference signal with an index of 6, a subcarrier index q occupied by a 5 th symbol group, a subcarrier index q +1 occupied by a 6 th symbol group, a subcarrier index q +7 occupied by a 7 th symbol group, and a subcarrier index q +6 occupied by an 8 th symbol group;
a positioning reference signal with an index of 7, wherein a 5 th symbol group occupies a subcarrier index q +1, a 6 th symbol group occupies a subcarrier index q, a 7 th symbol group occupies a subcarrier index q +6, and an 8 th symbol group occupies a subcarrier index q + 7;
a positioning reference signal with an index of 8, a subcarrier index q +2 occupied by a 5 th symbol group, a subcarrier index q +3 occupied by a 6 th symbol group, a subcarrier index q +9 occupied by a 7 th symbol group, and a subcarrier index q +8 occupied by an 8 th symbol group;
a positioning reference signal with an index of 9, a subcarrier index q +3 occupied by a 5 th symbol group, a subcarrier index q +2 occupied by a 6 th symbol group, a subcarrier index q +8 occupied by a 7 th symbol group, and a subcarrier index q +9 occupied by an 8 th symbol group;
a positioning reference signal with an index of 10, a subcarrier index q +4 occupied by a 5 th symbol group, a subcarrier index q +5 occupied by a 6 th symbol group, a subcarrier index q +11 occupied by a 7 th symbol group, and a subcarrier index q +10 occupied by an 8 th symbol group;
the index of the positioning reference signal is 11, a 5 th symbol group occupies a subcarrier index q +5, a 6 th symbol group occupies a subcarrier index q +4, a 7 th symbol group occupies a subcarrier index q +10, and an 8 th symbol group occupies a subcarrier index q + 11.
And, the symbol groups 1 to 4 are arranged in the same time-frequency resource sub-block 1, and the symbol groups 5 to 8 are arranged in the same time-frequency resource sub-block 2. In this specific embodiment, the positioning reference signal index selected from the symbol group 1 to the symbol group 4 is n (n is 0), the positioning reference signal index selected from the symbol group 5 to the symbol group 8 is m mod ((n + delta), 12), where delta is a random number, and in this embodiment, delta is 3, then m is 3, that is, the 1 st symbol group occupies a subcarrier index k, the 2 nd symbol group occupies a subcarrier index k +1, the 3 rd symbol group occupies a subcarrier index k +7, the 4 th symbol group occupies a subcarrier index k +6, the 5 th symbol group occupies a subcarrier index q +9, the 6 th symbol group occupies a subcarrier index q +8, the 7 th symbol group occupies a subcarrier index q +2, and the 8 th symbol group occupies a subcarrier index q + 3;
in this embodiment, when k is 0 and D is 12, q is k + D is 12, and the schematic structural diagrams of the time-frequency resource sub-block 1 and the time-frequency resource sub-block 2 are shown in fig. 6. The positioning reference signal indexes selected from the symbol group 1 to the symbol group 4 are n (n is 0), and the positioning reference signal indexes selected from the symbol group 5 to the symbol group 8 are m mod ((n + delta), 12), where delta is a random number, and in this embodiment, delta is 3, and then m is 3, so that the 1 st symbol group occupies subcarrier index 0, the 2 nd symbol group occupies subcarrier index 1, the 3 rd symbol group occupies subcarrier index 7, the 4 th symbol group occupies subcarrier index 6, the 5 th symbol group occupies subcarrier index 21, the 6 th symbol group occupies subcarrier index 20, the 7 th symbol group occupies subcarrier index 14, and the 8 th symbol group occupies subcarrier index 15;
in addition, when k is 0 and D is 36, q is k + D is 36, and the structural schematic diagram of the time-frequency resource sub-block 1 and the time-frequency resource sub-block 2 is shown in fig. 7. The positioning reference signal indexes selected from the symbol group 1 to the symbol group 4 are n (n is 0), and the positioning reference signal indexes selected from the symbol group 5 to the symbol group 8 are m mod ((n + delta), 12), where delta is a random number, and in this embodiment, delta is 3, and then m is 3, so that the 1 st symbol group occupies subcarrier index 0, the 2 nd symbol group occupies subcarrier index 1, the 3 rd symbol group occupies subcarrier index 7, the 4 th symbol group occupies subcarrier index 6, the 5 th symbol group occupies subcarrier index 45, the 6 th symbol group occupies subcarrier index 44, the 7 th symbol group occupies subcarrier index 38, and the 8 th symbol group occupies subcarrier index 39.
Further, the first time-frequency resource block and the second time-frequency resource block are configured in a random access channel resource of a preset coverage enhancement level, or configured in a random access channel resource of a preset coverage enhancement level and on one frequency band resource.
It should be noted that the preset random access channel resource of the coverage enhancement level may include a random access channel resource configured to one coverage enhancement level in the NB-IoT system in the 3GPP Rel-13 release standard; or a random access channel resource configured to one coverage enhancement level in the NB-IoT system in the 3GPP Rel-14 release standard. The preset coverage enhancement grade and the random access channel resource on one frequency band resource comprise the random access channel resource which is configured to one coverage enhancement grade and is on one frequency band resource in an NB-IoT system in the 3GPP Rel-14 release standard.
Optionally, for the random access channel resource of the preset coverage enhancement level or the random access channel resource of the preset coverage enhancement level and on one of the frequency band resources, consecutive 24 subcarriers are occupied in the frequency domain and starting subcarrier indexes are k, and a-B-1 and D-12.
Optionally, for the random access channel resource of the preset coverage enhancement level, or the random access channel resource of the preset coverage enhancement level and on one of the frequency band resources, 36 consecutive subcarriers are occupied in the frequency domain, and the starting subcarrier index is also k, and a-B-1 and D-24.
Optionally, for the random access channel resource of the preset coverage enhancement level, or the random access channel resource of the preset coverage enhancement level and on one of the frequency band resources, consecutive 48 subcarriers are occupied in the frequency domain and the starting subcarrier index is also k, and a-B-1 and D-36.
Optionally, for the random access channel resource of the preset coverage enhancement level, or the random access channel resource of the preset coverage enhancement level and on one of the frequency band resources, consecutive 48 subcarriers are occupied in the frequency domain and the starting subcarrier index is also k, and a-B-2 and D-24.
Detailed description of the preferred embodiment
In this embodiment, for 16 symbol groups adjacent to each other in the time domain in the positioning reference signal, taking the symbol group 1 to the symbol group 16 as an example, in the 16 symbol groups, resources occupied by the symbol group 1 to the symbol group 8 are included in the time-frequency resource block 1, and resources occupied by the symbol group 9 to the symbol group 16 are included in the time-frequency resource block 2. It should be noted that the positioning reference signal may include more than one 16 symbol group. The 16 symbol groups in this embodiment may be 16 symbol groups located at the transmission start end of the positioning reference signal, or 16 symbol groups subsequent to the transmission start end of the positioning reference signal, and so on.
Wherein, the time domain length of the time frequency resource block 1 is 8 symbol group lengths, the frequency domain length of the time frequency resource block 1 is 12 subcarriers, and the initial subcarrier index is k (k is an integer greater than or equal to 0);
the time domain length of the time frequency resource block 2 is 8 symbol group lengths, the frequency domain length of the time frequency resource block 2 is 12 subcarriers, and the index of the initial subcarrier is k + D (k is an integer greater than or equal to 0); wherein D is a frequency domain interval between the first time-frequency resource block and the second time-frequency resource block, and may specifically be a positive integer or a negative integer or 0;
the time interval between the time-frequency resource block 1 and the time-frequency resource block 2 in the time domain is T time units, and in the specific embodiment, T is 0;
referring to fig. 8, it shows the time-frequency resources occupied by the 16 symbol groups when the positioning reference signals are transmitted, in the figure, the positioning reference signal indexes selected from the symbol group 1 to the symbol group 8 are 0, and the positioning reference signal indexes selected from the symbol group 9 to the symbol group 16 are 0; it can be understood that the time-frequency resources occupied by the 16 symbol groups satisfy a preset fourth mapping relationship, which specifically includes:
a positioning reference signal with an index of 0, a 1 st symbol group occupying subcarrier index k, a 2 nd symbol group occupying subcarrier index k +1, a 3 rd symbol group occupying subcarrier index k +7, a 4 th symbol group occupying subcarrier index k +6, a 5 th symbol group occupying subcarrier index k, a 6 th symbol group occupying subcarrier index k +1, a 7 th symbol group occupying subcarrier index k +7, an 8 th symbol group occupying subcarrier index k +6, a 9 th symbol group occupying subcarrier index k + D +6, a 10 th symbol group occupying subcarrier index k + D +7, an 11 th symbol group occupying subcarrier index k + D +1, a 12 th symbol group occupying subcarrier index k + D, a 13 th symbol group occupying subcarrier index k + D +6, a 14 th symbol group occupying subcarrier index k + D +7, a 15 th symbol group occupying subcarrier index k + D +1, the 16 th symbol group occupies a subcarrier index k + D;
a positioning reference signal with an index of 1, a 1 st symbol group occupying subcarrier index k +1, a 2 nd symbol group occupying subcarrier index k, a 3 rd symbol group occupying subcarrier index k +6, a 4 th symbol group occupying subcarrier index k +7, a 5 th symbol group occupying subcarrier index k +1, a 6 th symbol group occupying subcarrier index k, a 7 th symbol group occupying subcarrier index k +6, an 8 th symbol group occupying subcarrier index k +7, a 9 th symbol group occupying subcarrier index k + D +7, a 10 th symbol group occupying subcarrier index k + D +6, an 11 th symbol group occupying subcarrier index k + D, a 12 th symbol group occupying subcarrier index k + D +1, a 13 th symbol group occupying subcarrier index k + D +7, a 14 th symbol group occupying subcarrier index k + D +6, a 15 th symbol group occupying subcarrier index k + D, the 16 th symbol group occupies a subcarrier index k + D + 1;
a positioning reference signal with an index of 2, a 1 st symbol group occupying subcarrier index k +2, a 2 nd symbol group occupying subcarrier index k +3, a 3 rd symbol group occupying subcarrier index k +9, a 4 th symbol group occupying subcarrier index k +8, a 5 th symbol group occupying subcarrier index k +2, a 6 th symbol group occupying subcarrier index k +3, a 7 th symbol group occupying subcarrier index k +9, an 8 th symbol group occupying subcarrier index k +8, a 9 th symbol group occupying subcarrier index k + D +8, a 10 th symbol group occupying subcarrier index k + D +9, an 11 th symbol group occupying subcarrier index k + D +3, a 12 th symbol group occupying subcarrier index k + D +4, a 13 th symbol group occupying subcarrier index k + D +8, a 14 th symbol group occupying subcarrier index k + D +9, the 15 th symbol group occupies a subcarrier index k + D +3, and the 16 th symbol group occupies a subcarrier index k + D + 4;
a positioning reference signal with an index of 3, a 1 st symbol group occupying subcarrier index k +3, a 2 nd symbol group occupying subcarrier index k +2, a 3 rd symbol group occupying subcarrier index k +8, a 4 th symbol group occupying subcarrier index k +9, a 5 th symbol group occupying subcarrier index k +3, a 6 th symbol group occupying subcarrier index k +2, a 7 th symbol group occupying subcarrier index k +8, an 8 th symbol group occupying subcarrier index k +9, a 9 th symbol group occupying subcarrier index k + D +9, a 10 th symbol group occupying subcarrier index k + D +8, an 11 th symbol group occupying subcarrier index k + D +4, a 12 th symbol group occupying subcarrier index k + D +3, a 13 th symbol group occupying subcarrier index k + D +9, a 14 th symbol group occupying subcarrier index k + D +8, the 15 th symbol group occupies a subcarrier index k + D +4, and the 16 th symbol group occupies a subcarrier index k + D + 3;
a positioning reference signal with an index of 4, a 1 st symbol group occupying subcarrier index k +4, a 2 nd symbol group occupying subcarrier index k +5, a 3 rd symbol group occupying subcarrier index k +11, a 4 th symbol group occupying subcarrier index k +10, a 5 th symbol group occupying subcarrier index k +4, a 6 th symbol group occupying subcarrier index k +5, a 7 th symbol group occupying subcarrier index k +11, an 8 th symbol group occupying subcarrier index k +10, a 9 th symbol group occupying subcarrier index k + D +10, a 10 th symbol group occupying subcarrier index k + D +11, an 11 th symbol group occupying subcarrier index k + D +5, a 12 th symbol group occupying subcarrier index k + D +4, a 13 th symbol group occupying subcarrier index k + D +10, a 14 th symbol group occupying subcarrier index k + D +11, the 15 th symbol group occupies a subcarrier index k + D +5, and the 16 th symbol group occupies a subcarrier index k + D + 4;
a positioning reference signal with an index of 5, a 1 st symbol group occupying subcarrier index k +5, a 2 nd symbol group occupying subcarrier index k +4, a 3 rd symbol group occupying subcarrier index k +10, a 4 th symbol group occupying subcarrier index k +11, a 5 th symbol group occupying subcarrier index k +5, a 6 th symbol group occupying subcarrier index k +4, a 7 th symbol group occupying subcarrier index k +10, an 8 th symbol group occupying subcarrier index k +11, a 9 th symbol group occupying subcarrier index k + D +11, a 10 th symbol group occupying subcarrier index k + D +10, an 11 th symbol group occupying subcarrier index k + D +4, a 12 th symbol group occupying subcarrier index k + D +5, a 13 th symbol group occupying subcarrier index k + D +11, a 14 th symbol group occupying subcarrier index k + D +10, the 15 th symbol group occupies a subcarrier index k + D +4, and the 16 th symbol group occupies a subcarrier index k + D + 5;
a positioning reference signal with an index of 6, a 1 st symbol group occupying subcarrier index k +6, a 2 nd symbol group occupying subcarrier index k +7, a 3 rd symbol group occupying subcarrier index k +1, a 4 th symbol group occupying subcarrier index k, a 5 th symbol group occupying subcarrier index k +6, a 6 th symbol group occupying subcarrier index k +7, a 7 th symbol group occupying subcarrier index k +1, an 8 th symbol group occupying subcarrier index k, a 9 th symbol group occupying subcarrier index k + D, a 10 th symbol group occupying subcarrier index k + D +1, an 11 th symbol group occupying subcarrier index k + D +7, a 12 th symbol group occupying subcarrier index k + D +6, a 13 th symbol group occupying subcarrier index k + D, a 14 th symbol group occupying subcarrier index k + D +1, a 15 th symbol group occupying subcarrier index k + D +7, the 16 th symbol group occupies a subcarrier index k + D + 6;
a positioning reference signal with an index of 7, a 1 st symbol group occupying subcarrier index k +7, a 2 nd symbol group occupying subcarrier index k +6, a 3 rd symbol group occupying subcarrier index k, a 4 th symbol group occupying subcarrier index k +1, a 5 th symbol group occupying subcarrier index k +7, a 6 th symbol group occupying subcarrier index k +6, a 7 th symbol group occupying subcarrier index k, an 8 th symbol group occupying subcarrier index k +1, a 9 th symbol group occupying subcarrier index k + D +1, a 10 th symbol group occupying subcarrier index k + D, an 11 th symbol group occupying subcarrier index k + D +6, a 12 th symbol group occupying subcarrier index k + D +7, a 13 th symbol group occupying subcarrier index k + D +1, a 14 th symbol group occupying subcarrier index k + D, a 15 th symbol group occupying subcarrier index k + D +6, the 16 th symbol group occupies a subcarrier index k + D + 7;
a positioning reference signal with an index of 8, a 1 st symbol group occupying subcarrier index k +8, a 2 nd symbol group occupying subcarrier index k +9, a 3 rd symbol group occupying subcarrier index k +3, a 4 th symbol group occupying subcarrier index k +2, a 5 th symbol group occupying subcarrier index k +8, a 6 th symbol group occupying subcarrier index k +9, a 7 th symbol group occupying subcarrier index k +3, an 8 th symbol group occupying subcarrier index k +2, a 9 th symbol group occupying subcarrier index k + D +2, a 10 th symbol group occupying subcarrier index k + D +3, an 11 th symbol group occupying subcarrier index k + D +9, a 12 th symbol group occupying subcarrier index k + D +8, a 13 th symbol group occupying subcarrier index k + D +2, a 14 th symbol group occupying subcarrier index k + D +3, the 15 th symbol group occupies a subcarrier index k + D +9, and the 16 th symbol group occupies a subcarrier index k + D + 8;
a positioning reference signal with an index of 9, a 1 st symbol group occupying subcarrier index k +9, a 2 nd symbol group occupying subcarrier index k +8, a 3 rd symbol group occupying subcarrier index k +2, a 4 th symbol group occupying subcarrier index k +3, a 5 th symbol group occupying subcarrier index k +9, a 6 th symbol group occupying subcarrier index k +8, a 7 th symbol group occupying subcarrier index k +2, an 8 th symbol group occupying subcarrier index k +3, a 9 th symbol group occupying subcarrier index k + D +3, a 10 th symbol group occupying subcarrier index k + D +2, an 11 th symbol group occupying subcarrier index k + D +8, a 12 th symbol group occupying subcarrier index k + D +9, a 13 th symbol group occupying subcarrier index k + D +3, a 14 th symbol group occupying subcarrier index k + D +2, the 15 th symbol group occupies a subcarrier index k + D +8, and the 16 th symbol group occupies a subcarrier index k + D + 9;
a positioning reference signal with an index of 10, a 1 st symbol group occupying subcarrier index k +10, a 2 nd symbol group occupying subcarrier index k +11, a 3 rd symbol group occupying subcarrier index k +5, a 4 th symbol group occupying subcarrier index k +4, a 5 th symbol group occupying subcarrier index k +10, a 6 th symbol group occupying subcarrier index k +11, a 7 th symbol group occupying subcarrier index k +5, an 8 th symbol group occupying subcarrier index k +4, a 9 th symbol group occupying subcarrier index k + D +4, a 10 th symbol group occupying subcarrier index k + D +5, an 11 th symbol group occupying subcarrier index k + D +11, a 12 th symbol group occupying subcarrier index k + D +10, a 13 th symbol group occupying subcarrier index k + D +4, a 14 th symbol group occupying subcarrier index k + D +5, the 15 th symbol group occupies a subcarrier index k + D +11, and the 16 th symbol group occupies a subcarrier index k + D + 10;
a positioning reference signal with an index of 11, a 1 st symbol group occupying subcarrier index k +11, a 2 nd symbol group occupying subcarrier index k +10, a 3 rd symbol group occupying subcarrier index k +4, a 4 th symbol group occupying subcarrier index k +5, a 5 th symbol group occupying subcarrier index k +11, a 6 th symbol group occupying subcarrier index k +10, a 7 th symbol group occupying subcarrier index k +4, an 8 th symbol group occupying subcarrier index k +5, a 9 th symbol group occupying subcarrier index k + D +5, a 10 th symbol group occupying subcarrier index k + D +4, an 11 th symbol group occupying subcarrier index k + D +10, a 12 th symbol group occupying subcarrier index k + D +11, a 13 th symbol group occupying subcarrier index k + D +5, a 14 th symbol group occupying subcarrier index k + D +4, the 15 th symbol group occupies a subcarrier index k + D +10, and the 16 th symbol group occupies a subcarrier index k + D + 11.
In addition, the positioning reference signal indexes selected from the symbol group 1 to the symbol group 8 are n ═ 0, and the positioning reference signal indexes selected from the symbol group 9 to the symbol group 16 are m ═ mod ((n + delta), 12); where delta is a random number, and in this embodiment, delta is 2, then the index of the positioning reference signal selected from the symbol group 9 to the symbol group 16 is m is 2. That is, the 1 st symbol group occupies a subcarrier index k, the 2 nd symbol group occupies a subcarrier index k +1, the 3 rd symbol group occupies a subcarrier index k +7, the 4 th symbol group occupies a subcarrier index k +6, the 5 th symbol group occupies a subcarrier index k, the 6 th symbol group occupies a subcarrier index k +1, the 7 th symbol group occupies a subcarrier index k +7, the 8 th symbol group occupies a subcarrier index k +6, the 9 th symbol group occupies a subcarrier index k + D +8, the 10 th symbol group occupies a subcarrier index k + D +9, the 11 th symbol group occupies a subcarrier index k + D +3, the 12 th symbol group occupies a subcarrier index k + D +2, the 13 th symbol group occupies a subcarrier index k + D +8, the 14 th symbol group occupies a subcarrier index k + D +9, the 15 th symbol group occupies a subcarrier index k + D +3, the 16 th symbol group occupies a subcarrier index k + D + 2.
Detailed description of the invention
In this embodiment, for 16 symbol groups adjacent to each other in the time domain in the positioning reference signal, taking the symbol group 1 to the symbol group 16 as an example, in the 16 symbol groups, resources occupied by the symbol group 1 to the symbol group 8 are included in the time-frequency resource block 1, and resources occupied by the symbol group 9 to the symbol group 16 are included in the time-frequency resource block 2.
It should be noted that the positioning reference signal may include more than one 16 symbol group. The 16 symbol groups in this embodiment may be 16 symbol groups located at the transmission start end of the positioning reference signal, or 16 symbol groups subsequent to the transmission start end of the positioning reference signal, and so on.
The time-frequency resource block 1 is composed of a (a ═ 2) time-frequency resource sub-blocks 1, wherein the time domain length of the time-frequency resource sub-block 1 is 8 symbol group length, the frequency domain length of the time-frequency resource sub-block 1 is 12 subcarriers, the structure of the time-frequency resource sub-block 1 is shown in fig. 9, the starting subcarrier index of the 1 st time-frequency resource sub-block 1 is k ═ k1(k1 is an integer greater than or equal to 0), and the starting subcarrier index of the 2 nd time-frequency resource sub-block 1 is k ═ k1+12(k1 is an integer greater than or equal to 0);
the time-frequency resource block 2 is composed of B (B ═ 2) time-frequency resource sub-blocks 2, where the time domain length of the time-frequency resource sub-block 2 is 8 symbol group length, the frequency domain length of the time-frequency resource sub-block 2 is 12 subcarriers, and the structure of the time-frequency resource sub-block 2 is shown in fig. 10. The starting subcarrier index of the 1 st time-frequency resource sub-block 2 is q-q 1(q1 is an integer greater than or equal to 0), and the starting subcarrier index of the 2 nd time-frequency resource sub-block 2 is q-q 1+12(q1 is an integer greater than or equal to 0);
the time interval between the time frequency resource block 1 and the time frequency resource block 2 is T, and T is more than or equal to 0. And T is 0 in this embodiment.
Specifically, for the time-frequency resource sub-block 1 shown in fig. 9, the structure thereof satisfies a preset fifth mapping relationship, where the preset fifth mapping relationship is:
a positioning reference signal with an index of 0, wherein a 1 st symbol group occupies a subcarrier index k, a 2 nd symbol group occupies a subcarrier index k +1, a 3 rd symbol group occupies a subcarrier index k +7, a 4 th symbol group occupies a subcarrier index k +6, a 5 th symbol group occupies a subcarrier index k, a 6 th symbol group occupies a subcarrier index k +1, a 7 th symbol group occupies a subcarrier index k +7, and an 8 th symbol group occupies a subcarrier index k + 6;
a positioning reference signal with an index of 1, wherein a 1 st symbol group occupies a subcarrier index k +1, a 2 nd symbol group occupies a subcarrier index k, a 3 rd symbol group occupies a subcarrier index k +6, a 4 th symbol group occupies a subcarrier index k +7, a 5 th symbol group occupies a subcarrier index k +1, a 6 th symbol group occupies a subcarrier index k, a 7 th symbol group occupies a subcarrier index k +6, and an 8 th symbol group occupies a subcarrier index k + 7;
a positioning reference signal with an index of 2, wherein a 1 st symbol group occupies a subcarrier index k +2, a 2 nd symbol group occupies a subcarrier index k +3, a 3 rd symbol group occupies a subcarrier index k +9, a 4 th symbol group occupies a subcarrier index k +8, a 5 th symbol group occupies a subcarrier index k +2, a 6 th symbol group occupies a subcarrier index k +3, a 7 th symbol group occupies a subcarrier index k +9, and an 8 th symbol group occupies a subcarrier index k + 8;
a positioning reference signal with an index of 3, wherein a 1 st symbol group occupies a subcarrier index k +3, a 2 nd symbol group occupies a subcarrier index k +2, a 3 rd symbol group occupies a subcarrier index k +8, a 4 th symbol group occupies a subcarrier index k +9, a 5 th symbol group occupies a subcarrier index k +3, a 6 th symbol group occupies a subcarrier index k +2, a 7 th symbol group occupies a subcarrier index k +8, and an 8 th symbol group occupies a subcarrier index k + 9;
a positioning reference signal with an index of 4, wherein a 1 st symbol group occupies a subcarrier index k +4, a 2 nd symbol group occupies a subcarrier index k +5, a 3 rd symbol group occupies a subcarrier index k +11, a 4 th symbol group occupies a subcarrier index k +10, a 5 th symbol group occupies a subcarrier index k +4, a 6 th symbol group occupies a subcarrier index k +5, a 7 th symbol group occupies a subcarrier index k +11, and an 8 th symbol group occupies a subcarrier index k + 10;
a positioning reference signal with an index of 5, wherein a 1 st symbol group occupies a subcarrier index k +5, a 2 nd symbol group occupies a subcarrier index k +4, a 3 rd symbol group occupies a subcarrier index k +10, a 4 th symbol group occupies a subcarrier index k +11, a 5 th symbol group occupies a subcarrier index k +5, a 6 th symbol group occupies a subcarrier index k +4, a 7 th symbol group occupies a subcarrier index k +10, and an 8 th symbol group occupies a subcarrier index k + 11;
a positioning reference signal with an index of 6, wherein a 1 st symbol group occupies a subcarrier index k +6, a 2 nd symbol group occupies a subcarrier index k +7, a 3 rd symbol group occupies a subcarrier index k +1, a 4 th symbol group occupies a subcarrier index k, a 5 th symbol group occupies a subcarrier index k +6, a 6 th symbol group occupies a subcarrier index k +7, a 7 th symbol group occupies a subcarrier index k +1, and an 8 th symbol group occupies a subcarrier index k;
a positioning reference signal with an index of 7, wherein a 1 st symbol group occupies a subcarrier index k +7, a 2 nd symbol group occupies a subcarrier index k +6, a 3 rd symbol group occupies a subcarrier index k, a 4 th symbol group occupies a subcarrier index k +1, a 5 th symbol group occupies a subcarrier index k +7, a 6 th symbol group occupies a subcarrier index k +6, a 7 th symbol group occupies a subcarrier index k, and an 8 th symbol group occupies a subcarrier index k + 1;
a positioning reference signal with an index of 8, wherein a 1 st symbol group occupies a subcarrier index k +8, a 2 nd symbol group occupies a subcarrier index k +9, a 3 rd symbol group occupies a subcarrier index k +3, a 4 th symbol group occupies a subcarrier index k +2, a 5 th symbol group occupies a subcarrier index k +8, a 6 th symbol group occupies a subcarrier index k +9, a 7 th symbol group occupies a subcarrier index k +3, and an 8 th symbol group occupies a subcarrier index k + 2;
a positioning reference signal with an index of 9, wherein a 1 st symbol group occupies a subcarrier index k +9, a 2 nd symbol group occupies a subcarrier index k +8, a 3 rd symbol group occupies a subcarrier index k +2, a 4 th symbol group occupies a subcarrier index k +3, a 5 th symbol group occupies a subcarrier index k +9, a 6 th symbol group occupies a subcarrier index k +8, a 7 th symbol group occupies a subcarrier index k +2, and an 8 th symbol group occupies a subcarrier index k + 3;
a positioning reference signal with an index of 10, wherein a 1 st symbol group occupies a subcarrier index k +10, a 2 nd symbol group occupies a subcarrier index k +11, a 3 rd symbol group occupies a subcarrier index k +5, a 4 th symbol group occupies a subcarrier index k +4, a 5 th symbol group occupies a subcarrier index k +10, a 6 th symbol group occupies a subcarrier index k +11, a 7 th symbol group occupies a subcarrier index k +5, and an 8 th symbol group occupies a subcarrier index k + 4;
the index is 11, the 1 st symbol group occupies subcarrier index k +11, the 2 nd symbol group occupies subcarrier index k +10, the 3 rd symbol group occupies subcarrier index k +4, the 4 th symbol group occupies subcarrier index k +5, the 5 th symbol group occupies subcarrier index k +11, the 6 th symbol group occupies subcarrier index k +10, the 7 th symbol group occupies subcarrier index k +4, and the 8 th symbol group occupies subcarrier index k + 5.
Specifically, for the time-frequency resource sub-block 2 shown in fig. 10, the structure thereof satisfies a preset sixth mapping relationship, where the preset sixth mapping relationship is:
a positioning reference signal with an index of 0, a subcarrier index q +6 occupied by a 9 th symbol group, a subcarrier index q +7 occupied by a 10 th symbol group, a subcarrier index q +1 occupied by an 11 th symbol group, a subcarrier index q occupied by a 12 th symbol group, a subcarrier index q +6 occupied by a 13 th symbol group, a subcarrier index q +7 occupied by a 14 th symbol group, a subcarrier index q +1 occupied by a 15 th symbol group, and a subcarrier index q occupied by a 16 th symbol group;
a positioning reference signal with an index of 1, a 9 th symbol group occupying subcarrier index q +7, a 10 th symbol group occupying subcarrier index q +6, an 11 th symbol group occupying subcarrier index q, a 12 th symbol group occupying subcarrier index q +1, a 13 th symbol group occupying subcarrier index q +7, a 14 th symbol group occupying subcarrier index q +6, a 15 th symbol group occupying subcarrier index q, a 16 th symbol group occupying subcarrier index q + 1;
a positioning reference signal with an index of 2, a 9 th symbol group occupying subcarrier index q +8, a 10 th symbol group occupying subcarrier index q +9, an 11 th symbol group occupying subcarrier index q +3, a 12 th symbol group occupying subcarrier index q +4, a 13 th symbol group occupying subcarrier index q +8, a 14 th symbol group occupying subcarrier index q +9, a 15 th symbol group occupying subcarrier index q +3, a 16 th symbol group occupying subcarrier index q + 4;
a positioning reference signal with an index of 3, a 9 th symbol group occupying subcarrier index q +9, a 10 th symbol group occupying subcarrier index q +8, an 11 th symbol group occupying subcarrier index q +4, a 12 th symbol group occupying subcarrier index q +3, a 13 th symbol group occupying subcarrier index q +9, a 14 th symbol group occupying subcarrier index q +8, a 15 th symbol group occupying subcarrier index q +4, a 16 th symbol group occupying subcarrier index q + 3;
a positioning reference signal with an index of 4, a 9 th symbol group occupying subcarrier index q +10, a 10 th symbol group occupying subcarrier index q +11, an 11 th symbol group occupying subcarrier index q +5, a 12 th symbol group occupying subcarrier index q +4, a 13 th symbol group occupying subcarrier index q +10, a 14 th symbol group occupying subcarrier index q +11, a 15 th symbol group occupying subcarrier index q +5, a 16 th symbol group occupying subcarrier index q + 4;
a positioning reference signal with an index of 5, a 9 th symbol group occupying subcarrier index q +11, a 10 th symbol group occupying subcarrier index q +10, an 11 th symbol group occupying subcarrier index q +4, a 12 th symbol group occupying subcarrier index q +5, a 13 th symbol group occupying subcarrier index q +11, a 14 th symbol group occupying subcarrier index q +10, a 15 th symbol group occupying subcarrier index q +4, a 16 th symbol group occupying subcarrier index q + 5;
a positioning reference signal with an index of 6, a 9 th symbol group occupying subcarrier index q, a 10 th symbol group occupying subcarrier index q +1, an 11 th symbol group occupying subcarrier index q +7, a 12 th symbol group occupying subcarrier index q +6, a 13 th symbol group occupying subcarrier index q, a 14 th symbol group occupying subcarrier index q +1, a 15 th symbol group occupying subcarrier index q +7, a 16 th symbol group occupying subcarrier index q + 6;
a positioning reference signal with an index of 7, a 9 th symbol group occupying subcarrier index q +1, a 10 th symbol group occupying subcarrier index q, an 11 th symbol group occupying subcarrier index q +6, a 12 th symbol group occupying subcarrier index q +7, a 13 th symbol group occupying subcarrier index q +1, a 14 th symbol group occupying subcarrier index q, a 15 th symbol group occupying subcarrier index q +6, and a 16 th symbol group occupying subcarrier index q + 7;
a positioning reference signal with an index of 8, a 9 th symbol group occupying subcarrier index q +2, a 10 th symbol group occupying subcarrier index q +3, an 11 th symbol group occupying subcarrier index q +9, a 12 th symbol group occupying subcarrier index q +8, a 13 th symbol group occupying subcarrier index q +2, a 14 th symbol group occupying subcarrier index q +3, a 15 th symbol group occupying subcarrier index q +9, a 16 th symbol group occupying subcarrier index q + 8;
a positioning reference signal with an index of 9, a 9 th symbol group occupying subcarrier index q +3, a 10 th symbol group occupying subcarrier index q +2, an 11 th symbol group occupying subcarrier index q +8, a 12 th symbol group occupying subcarrier index q +9, a 13 th symbol group occupying subcarrier index q +3, a 14 th symbol group occupying subcarrier index q +2, a 15 th symbol group occupying subcarrier index q +8, a 16 th symbol group occupying subcarrier index q + 9;
a positioning reference signal with an index of 10, a 9 th symbol group occupying subcarrier index q +4, a 10 th symbol group occupying subcarrier index q +5, an 11 th symbol group occupying subcarrier index q +11, a 12 th symbol group occupying subcarrier index q +10, a 13 th symbol group occupying subcarrier index q +4, a 14 th symbol group occupying subcarrier index q +5, a 15 th symbol group occupying subcarrier index q +11, a 16 th symbol group occupying subcarrier index q + 10;
the index is 11, the 9 th symbol group occupies subcarrier index q +5, the 10 th symbol group occupies subcarrier index q +4, the 11 th symbol group occupies subcarrier index q +10, the 12 th symbol group occupies subcarrier index q +11, the 13 th symbol group occupies subcarrier index q +5, the 14 th symbol group occupies subcarrier index q +4, the 15 th symbol group occupies subcarrier index q +10, and the 16 th symbol group occupies subcarrier index q + 11.
In this embodiment, the resources occupied by the symbol groups 1 to 8 are included in the 1 st time-frequency resource sub-block 1 of the time-frequency resource block 1, the resources occupied by the symbol groups 9 to 16 are included in the 1 st time-frequency resource sub-block 2 of the time-frequency resource block 2, and then the starting subcarrier index of the 1 st time-frequency resource sub-block 1 is k ═ k1(k1 is an integer greater than or equal to 0), and the starting subcarrier index of the 1 st time-frequency resource sub-block 2 is q ═ q1(q1 is an integer greater than or equal to 0).
When k is 0 and D is 24, q is k + D is 24, and the structural schematic diagrams of the time-frequency resource sub-block 1 and the time-frequency resource sub-block 2 are shown in fig. 11. The positioning reference signal indexes selected from the symbol group 1 to the symbol group 8 are n (n is 0), and the positioning reference signal indexes selected from the symbol group 9 to the symbol group 16 are m mod ((n + delta), 12), where delta is a random variable, in this embodiment, delta is 3, and then m is 3, so that the 1 st symbol group occupies subcarrier index 0, the 2 nd symbol group occupies subcarrier index 1, the 3 rd symbol group occupies subcarrier index 7, the 4 th symbol group occupies subcarrier index 6, the 5 th symbol group occupies subcarrier index 0, the 6 th symbol group occupies subcarrier index 1, the 7 th symbol group occupies subcarrier index 7, the 8 th symbol group occupies subcarrier index 6, the 9 th symbol group occupies subcarrier index 33, the 10 th symbol group occupies subcarrier index 32, the 11 th symbol group occupies subcarrier index 26, a 12 th symbol group occupies a subcarrier index 27, a 13 th symbol group occupies a subcarrier index 33, a 14 th symbol group occupies a subcarrier index 32, a 15 th symbol group occupies a subcarrier index 26, and a 16 th symbol group occupies a subcarrier index 27;
detailed description of the preferred embodiment
In this embodiment, 4 symbol groups are defined as 1 symbol group set, and subcarriers occupied when the same symbol group set is transmitted belong to the same subcarrier set. 4 subcarrier sets are configured in the frequency band resource of 180kHz, and are respectively a subcarrier set 1, a subcarrier set 2, a subcarrier set 3 and a subcarrier set 4. Wherein each subcarrier set comprises 12 subcarriers.
Occupying the same subcarrier subset when the 1 st and 2 nd symbol groups in the symbol group set group are transmitted; the 3 rd and 4 th symbol groups in the symbol group set group occupy the same subcarrier subset when transmitted. The 1 st and 2 nd symbol groups occupy different subsets of subcarriers than the 3 rd and 4 th symbol groups. The symbol group resource allocation diagram is shown in fig. 12, wherein subcarrier indexes 0-11 described in fig. 12 are indexes in a subcarrier subset and do not represent indexes of subcarriers of the subcarriers in frequency band resources.
In this embodiment, the 1 st symbol group set in the two symbol group sets adjacent to each other in the time domain occupies the subcarrier set 1, and the 2 nd symbol group set occupies the subcarrier set 4.
In this specific embodiment, indexes of subcarrier subsets occupied when transmitting a 1 st symbol group and a 2 nd symbol group in a 1 st first symbol group set in two adjacent first symbol group sets in a time domain are 0, and indexes of subcarrier subsets occupied when transmitting a 1 st symbol group and a 2 nd symbol group in a 2 nd first symbol group set are 1; the index of the subcarrier subset occupied when the 3 rd and 4 th symbol groups in the 1 st first symbol group set are transmitted is 1, and the index of the subcarrier subset occupied when the 3 rd and 4 th symbol groups in the 2 nd first symbol group set are transmitted is 0.
Example two
An embodiment of the present invention further provides a method for positioning, referring to fig. 13, where the method may include:
s1301: a first network element sends a positioning reference signal to a second network element;
the resources of the positioning reference signal are configured in P time frequency resource sets, the index is P, and P is more than or equal to 0 and less than or equal to P-1;
the P time frequency resource sets are configured on N frequency band resources, wherein P is an integer not less than 1, and N is an integer not less than 1.
Exemplarily, the set of time-frequency resources is random access channel resources satisfying a preset coverage enhancement level; alternatively, the first and second electrodes may be,
the time frequency resource set is a random access channel resource which meets a preset coverage enhancement level and is on one frequency band resource.
Specifically, the preset random access channel resources covering the enhancement level include: configuring a random access channel resource covering an enhancement level in an NB-IoT system in a 3GPP Rel-13 release standard; or (b).
The 3GPP Rel-14 release standard is configured with a random access channel resource covering an enhancement level in an NB-IoT system.
The random access channel resource with the preset coverage enhancement level and on one of the frequency band resources may include: random access channel resources on one of the band resources and configured to one coverage enhancement level in the NB-IoT system in the 3GPP Rel-14 release standard.
Further, the P time-frequency resource sets correspond to P different coverage enhancement levels.
Exemplarily, before the first network element sends the positioning reference signal to the second network element, the method further includes:
the first network element selects G (p) symbol group sets from the time frequency resource set with the index of p as the sending resources of the positioning reference signals;
wherein, the single symbol group set comprises 4 symbol groups; each symbol group occupies the same subcarriers in the frequency domain, and each symbol group is composed of a cyclic prefix CP and 5 symbols in the time domain.
Specifically, the value of g (p) may be at least one of the following:
configured by a base station
G (P) values in the P time frequency resource sets are the same, the value is G, and G is configured by the base station;
is the minimum of P R (P);
moreover, g (p) independent configurations for different coverage enhancement levels;
r (p) is the number of repeated transmissions of the random access channel supported by the random access channel resource with index p, and the random access channel resource with index p supports the transmissions of a plurality of random access channels with the number of repeated transmissions of r (p); the rule for selecting r (p) said symbol group sets from said random access channel resources with index p is configured by 3GPP Rel-13 release standard or by 3GPP Rel-14 release standard, wherein the transmission of one said symbol group set is defined as 1 transmission of said random access channel.
Further, the selecting, by the first network element, g (p) symbol group sets from the time-frequency resource set with the index p as transmission resources of the positioning reference signal specifically includes:
the first network element selecting the first G (p) symbol group sets of the R (p) symbol group sets; or the like, or, alternatively,
the first network element selecting a set of G (p) symbol groups arranged at the rearmost among the R (p) symbol group sets; or the like, or, alternatively,
g (p) symbol group sets selected by the first network element from the r (p) symbol group sets according to a predetermined rule; wherein G (p) is not more than R (p).
Further, the selecting, by the first network element, g (p) symbol group sets from the time-frequency resource set with the index p as transmission resources of the positioning reference signal specifically includes:
the first network element selects g (p) ═ a (p) xr (p) sets of the symbol groups. Wherein, A (p) is not less than 1, R (p) is the repeated transmission times of the random access channel supported on the random access channel resource with index p.
It should be noted that, for a (p), a (p) corresponding to the time-frequency resource sets with different indexes p is the same; and A (p) independent configuration corresponding to the time frequency resource sets with different indexes p.
Exemplarily, the resource configuration of the positioning reference signal is in a non-contention random access resource of the random access channel resource.
Illustratively, the frequency domain locations of the P sets of time-frequency resources are different.
Or, the time domain positions of the P time frequency resource sets are not overlapped.
Illustratively, the P sets of time-frequency resources include at least one of:
k with same coverage enhancement leveljA set of time-frequency resources; where j is the coverage enhancement level index, KjNot less than 2; and said K isjThe time frequency resource sets are positioned on different frequency band resources;
covering C time frequency resource sets with different enhancement levels; wherein c is greater than or equal to 2; the C time frequency resource sets are positioned on the same frequency band resource;
j time frequency resource sets covering the enhancement levels, wherein J is a covering enhancement level index, J is more than or equal to 0 and less than or equal to J-1, the number of the time frequency resources covering the enhancement levels and is J is K, and K is more than or equal to 2 and less than or equal to P; the K time frequency resource sets with the coverage enhancement level j are positioned on different frequency band resources. It should be noted that the number of time-frequency resources of J coverage enhancement levels is K, that is, the number of time-frequency resources of coverage enhancement levels with an index J equal to 0, 1, 2, … J-1 is K.
For the above example, further before the first network element sends the positioning reference signal to the second network element, the method further includes:
the first network element selects G (p) symbol group sets from the time frequency resource set with the index of p as the sending resources of the positioning reference signals;
wherein, the single symbol group set comprises 4 symbol groups; each symbol group occupies the same subcarriers in the frequency domain.
For the above example, further, the selecting, by the first network element, g (p) symbol group sets from the time-frequency resource set with an index p as transmission resources of the positioning reference signal specifically includes:
the first network element selecting the first G (p) symbol group sets of the R (p) symbol group sets; or the like, or, alternatively,
the first network element selecting a set of G (p) symbol groups arranged at the rearmost among the R (p) symbol group sets; or the like, or, alternatively,
the first network element selects G (p) symbol group sets from R (p) symbol group sets according to a predetermined rule;
wherein G (p) is not more than R (p).
For the above example, further, the selecting, by the first network element, g (p) symbol group sets from the time-frequency resource set with an index p as transmission resources of the positioning reference signal specifically includes:
the first network element selects g (p) ═ a (p) xr (p) sets of the symbol groups. Wherein A (p) is not less than 1; r (p) is the number of repeated transmissions of a random access channel supported on the random access channel resource with index p.
For the above example, further, the resource configuration of the positioning reference signal is in a non-contention random access channel resource of the random access channel resources.
It should be noted that, for a (p), a (p) corresponding to the time-frequency resource sets with different indexes p is the same; and A (p) independent configuration corresponding to the time frequency resource sets with different indexes p.
It should be noted that, for the above-mentioned scheme in this embodiment, specific examples are as follows:
specific example 1
In the 3GPP Rel-13 release standard, 1 frequency band resource is configured in an NB-IoT system, the size of the frequency band resource is 180kHz, and the random access resource structure configured for a coverage enhancement level 0(CEL0) and a coverage enhancement level 1(CEL1) by the system is as shown in fig. 14, where the random access resource configuration period of CEL0 is 40ms, the occupied subcarrier index is 12 to 23, and the number of times of repeated transmission of the random access channel of CEL0 is 2; the random access resource configuration period of the CEL1 is 40ms, the occupied subcarrier indexes are 36 to 47, and the repeated sending times of the random access channel of the CEL1 are 4 times;
wherein, 1 time of transmission of the random access channel needs to occupy 4 symbol groups, and we define 4 symbol groups as a symbol group set.
Referring to fig. 14, a small rectangular block represents a symbol group, and the number in the rectangular block of the symbol group represents the index of the random access channel to which the symbol group is assigned. In fig. 14, CEL0 supports 12 random access channels, CEL1 supports 12 random access channels, and CEL0 and CEL1 configure the same random access resource configuration period.
The 3GPP Rel-13 NB-IoT release standard specifies that the index of a random access channel selected by a terminal when sending a random access signal needs to be reselected between two adjacent symbol group sets, and a reselecting method is specified by the 3GPP Rel-13 NB-IoT release standard.
In this embodiment, as shown in fig. 14, 8 symbol group indexes in the random access channel resource of CEL0 are sequentially {11, 11, 11, 11, 2, 2, 2, 2} configured as a non-contention random access channel, and 16 symbol group indexes in the random access channel resource of CEL1 are sequentially {11, 11, 11, 11, 2, 2, 2, 2, 6, 6, 6, 6, 3, 3, 3, 3} configured as a non-contention random access channel.
The terminal 1 transmits a positioning reference signal, wherein the resource of the positioning reference signal is configured in a non-contention random access channel among the random access channel resources of CEL0 and CEL 1.
The period of terminal 1 sending positioning reference signal is the same as the configuration period of random access resource, both are 40ms, and 8 symbol groups with index {11, 11, 11, 11, 2, 2, 2, 2} occupying CEL0 and 8 symbol groups with index {11, 11, 11, 11, 2, 2, 2, 2} occupying CEL1 are used for sending positioning reference signal.
Detailed description of the invention
The 1 band resource size in the 3GPP NB-IoT system is 180 kHz. As shown in fig. 15, the random access resource configuration of the system configured for the coverage enhancement level 0(CEL0) is that the random access resources of CEL0 are configured on 2 frequency band resources, i.e., frequency band resource 1 and frequency band resource 2, respectively. The random access resource configuration period of the CEL0 is 40ms, the subcarrier index occupied by a frequency band resource is 0 to 11, and the repeated sending times of the random access channel of the CEL0 is 2 times;
wherein, 1 time of transmission of the random access channel needs to occupy 4 symbol groups, and we define 4 symbol groups as a symbol group set. The subcarriers occupied by each symbol group in the frequency domain are the same and the positioning reference signal subcarrier spacing af is 3.75 kHz. Each symbol group is formed by one Cyclic Prefix (CP) and K ═ 5 symbols (symbol) in the time domain, as shown in fig. 2.
Since the positioning reference signal subcarrier spacing Δ f is 3.75kHz, one symbol length
Figure BDA0001279398830000361
Figure BDA0001279398830000362
When the CP length is 0.2667ms, the time domain length of each symbol group is 0.2667+0.2667 × 5 ═ 1.6 ms;
when the CP length is 0.0667ms, the time domain length of each symbol group is 0.0667+0.2667 × 5 ═ 1.4 ms; in the following specific embodiment of this embodiment, the CP length is set to 0.2667ms, and the time domain length of the symbol group is 1.6 ms.
Referring to fig. 15, a small rectangular block represents a symbol group, and the number in the rectangular block of the symbol group represents the index of the random access channel to which the symbol group is assigned. In fig. 15, CEL0 supports 12 random access channels on one frequency band resource, and CEL0 on frequency band resource 1 and frequency band resource 2 are configured with the same configuration cycle of random access resources.
The 3GPP Rel-13 NB-IoT release standard specifies that the index of a random access channel selected by a terminal when sending a random access signal needs to be reselected between two adjacent symbol group sets, and a reselecting method is specified by the 3GPP Rel-13 NB-IoT release standard.
In this embodiment, as shown in fig. 15, 8 symbol group indexes in the random access channel resource of CEL0 of frequency band resource 1 are sequentially {11, 11, 11, 11, 2, 2, 2, 2} configured as a non-contention random access channel, and 8 symbol group indexes in the random access channel resource of CEL0 of frequency band resource 1 are sequentially {11, 11, 11, 11, 2, 2, 2, 2} configured as a non-contention random access channel.
Terminal 1 transmits a positioning reference signal, wherein the resource of the positioning reference signal is configured in a non-contention random access channel among the random access channel resources of CEL 0.
The period for terminal 1 to transmit the positioning reference signal is twice the configured period of the random access resource of CEL0, i.e. 80 ms. As shown in fig. 15, terminal 1 first transmits a positioning reference signal on 8 symbol groups {11, 11, 11, 11, 2, 2, 2, 2} in the random access channel resource of 1 st CEL0 of band resource 1, and then terminal 1 transmits a positioning reference signal on 8 symbol groups {11, 11, 11, 11, 2, 2, 2} in the random access channel resource of 2 nd CEL0 of band resource 2.
Detailed description of the preferred embodiment
The 1 band resource size in the 3GPP NB-IoT system is 180 kHz. As shown in fig. 19, the random access resource configuration of the system configured for the coverage enhancement level 0(CEL0) and the coverage enhancement level 1(CEL1) is that the random access resource of CEL0 is configured for the frequency band resource 1 and the random access resource of CEL1 is configured for the frequency band resource 2. The random access resource configuration period of the CEL0 is 40ms, the subcarrier index occupied by a frequency band resource is 0 to 11, and the repeated sending times of the random access channel of the CEL0 is 1; the random access resource allocation period of CEL1 is 40ms, the subcarrier index occupied by a frequency band resource is 0 to 11, and the number of repeated transmissions of the random access channel of CEL1 is 2.
Wherein, 1 time of transmission of the random access channel needs to occupy 4 symbol groups, and we define 4 symbol groups as a symbol group set. The subcarriers occupied by each symbol group in the frequency domain are the same and the positioning reference signal subcarrier spacing af is 3.75 kHz. Each symbol group is formed by one Cyclic Prefix (CP) and K ═ 5 symbols (symbol) in the time domain, as shown in fig. 2.
Since the positioning reference signal subcarrier spacing Δ f is 3.75kHz, one symbol length
Figure BDA0001279398830000371
Figure BDA0001279398830000372
When the CP length is 0.2667ms, the time domain length of each symbol group is 0.2667+0.2667 × 5 ═ 1.6 ms;
when the CP length is 0.0667ms, the time domain length of each symbol group is 0.0667+0.2667 × 5 ═ 1.4 ms; in the following specific embodiment of this embodiment, the CP length is set to 0.2667ms, and the time domain length of the symbol group is 1.6 ms.
Referring to fig. 16, a small rectangular block represents a symbol group, and the number in the rectangular block of the symbol group represents the index of the random access channel to which the symbol group is assigned. In fig. 16, CEL0 supports 12 random access channels, CEL1 supports 12 random access channels, and CEL0 and CEL1 configure the same configuration period of random access resources.
The 3GPP Rel-13 NB-IoT release standard specifies that the index of a random access channel selected by a terminal when sending a random access signal needs to be reselected between two adjacent symbol group sets, and a reselecting method is specified by the 3GPP Rel-13 NB-IoT release standard.
In this embodiment, as shown in fig. 16, 4 symbol group indexes in the random access channel resource of CEL0 of frequency band resource 1 are sequentially {11, 11, 11, 11} configured as a non-contention random access channel, and 8 symbol group indexes in the random access channel resource of CEL1 of frequency band resource 2 are sequentially {11, 11, 11, 11, 2, 2, 2, 2} configured as a non-contention random access channel.
The terminal 1 transmits a positioning reference signal, wherein the resource of the positioning reference signal is configured in a non-contention random access channel among the random access channel resources of CEL0 and CEL 1.
Terminal 1 transmits the positioning reference signal with a period of 80ms, and as shown in fig. 16, terminal 1 first transmits the positioning reference signal on 4 symbol groups {11, 11, 11, 11} in the random access channel resource of CEL0 No. 1 of frequency band resource 1, and then terminal 1 transmits the positioning reference signal on 8 symbol groups {11, 11, 11, 11, 2, 2, 2, 2} in the random access channel resource of CEL1 No. 2 of frequency band resource 2.
EXAMPLE III
Based on the same technical concept as the foregoing embodiment, referring to fig. 17, a network element 17 according to an embodiment of the present invention is shown, where the network element 17 includes a first sending module 171, configured to send a positioning reference signal to a peer network element; the positioning reference signals are transmitted on N frequency band resources, wherein N is an integer not less than 1; the positioning reference signal occupies at least one symbol group, wherein each symbol group occupies the same subcarrier in a frequency domain, and each symbol group is composed of a cyclic prefix CP and at least one symbol in a time domain.
Illustratively, for eight symbol groups adjacent to each other in the time domain in the positioning reference signal transmitted by the first transmitting module, resources occupied by the symbol groups 1 to 4 are contained in a first time-frequency resource block, and resources occupied by the symbol groups 5 to 8 are contained in a second time-frequency resource block;
the time domain length of the first time-frequency resource block is the time domain length corresponding to 4 symbol groups, the frequency domain length of the first time-frequency resource block is 12 subcarriers, the index of the initial subcarrier is k, and k is an integer greater than or equal to 0;
the time domain length of the second time frequency resource block is the time domain length corresponding to 4 symbol groups, the frequency domain length of the second time frequency resource block is 12 subcarriers, the index of an initial subcarrier is k + D, and D is the frequency domain interval between the initial subcarrier of the first time frequency resource block and the initial subcarrier of the second time frequency resource block;
and the time domain interval between the first time frequency resource block and the second time frequency resource block is T time units, and T is more than or equal to 0.
Illustratively, for eight symbol groups adjacent to each other in the time domain in the positioning reference signal transmitted by the first transmitting module 171, the resources occupied by the symbol groups 1 to 4 are contained in a first time-frequency resource block, and the resources occupied by the symbol groups 5 to 8 are contained in a second time-frequency resource block;
the first time-frequency resource block is composed of A first time-frequency resource subblocks, wherein A is an integer greater than or equal to 1, the time domain length of each first time-frequency resource subblock is the time domain length corresponding to 4 symbol groups, and the frequency domain length of each first time-frequency resource subblock is 12 subcarriers;
the second time frequency resource block is composed of B second time frequency resource sub-blocks, wherein B is an integer greater than or equal to 1, the time domain length of the second time frequency resource sub-blocks is the time domain length corresponding to 4 symbol groups, and the frequency domain length of the second time frequency resource sub-blocks is 12 subcarriers;
the first time frequency resource block and the second time frequency resource block are separated by T time units in the time domain, and T is more than or equal to 0.
Illustratively, for 16 symbol groups adjacent to each other in the time domain in the positioning reference signal transmitted by the first transmitting module 171, the resources occupied by the symbol groups 1 to 8 are contained in a first time-frequency resource block, and the resources occupied by the symbol groups 9 to 16 are contained in a second time-frequency resource block.
The time domain length of the first time-frequency resource block is the time domain length corresponding to 8 symbol groups, the frequency domain length of the first time-frequency resource block is 12 subcarriers, the index of a starting subcarrier is k, and k is an integer greater than or equal to 0;
the time domain length of the second time frequency resource block is the time domain length corresponding to 8 symbol groups, the frequency domain length of the second time frequency resource block is 12 subcarriers, and the index of the initial subcarrier is k + D;
the first time frequency resource block and the second time frequency resource block are separated by T time units in time domain, and T is more than or equal to 0.
Illustratively, for 16 symbol groups adjacent to each other in the time domain in the positioning reference signal transmitted by the first transmitting module 171, the resources occupied by the symbol groups 1 to 8 are included in a first time-frequency resource block, and the resources occupied by the symbol groups 9 to 16 are included in a second time-frequency resource block;
the first time-frequency resource block is composed of A first time-frequency resource sub-blocks, wherein A is an integer greater than or equal to 1, the time domain length of each first time-frequency resource sub-block is the time domain length corresponding to 8 symbol groups, and the frequency domain length of each first time-frequency resource block is 12 subcarriers;
the second time frequency resource block is composed of B second time frequency resource sub-blocks, wherein B is an integer greater than or equal to 1, the time domain length of the second time frequency resource sub-blocks is the time domain length corresponding to 8 symbol groups, and the frequency domain length of the second time frequency resource block is 12 subcarriers;
the first time frequency resource block and the second time frequency resource block are separated by T time units in the time domain, and T is more than or equal to 0.
Illustratively, the band resource includes P sets of subcarriers, where P is greater than or equal to 1; every 4 symbol groups form a symbol group set, subcarriers occupied by symbol groups in the same symbol group set during transmission belong to the same subcarrier set, and each subcarrier set comprises 12 subcarriers.
Example four
Based on the same technical concept as that of the foregoing embodiment, referring to fig. 18, a network element 18 according to an embodiment of the present invention is shown, where the network element 18 includes a second sending module 181, configured to send a positioning reference signal to a peer network element;
the resources of the positioning reference signal are configured in P time frequency resource sets, the index is P, and P is more than or equal to 0 and less than or equal to P-1;
the P time frequency resource sets are configured on N frequency band resources, wherein P is an integer not less than 1, and N is an integer not less than 1.
Exemplarily, referring to fig. 19, the network element 18 further includes a first selecting module 182, configured to select a set of g (p) symbol groups from the set of time-frequency resources with an index p as a transmission resource of the positioning reference signal;
wherein, the single symbol group set comprises 4 symbol groups; each symbol group occupies the same subcarriers in the frequency domain, and each symbol group is composed of a cyclic prefix CP and 5 symbols in the time domain.
Further, the first selecting module 182 is specifically configured to:
selecting the first G (p) symbol group sets in the R (p) symbol group sets; or the like, or, alternatively,
selecting the G (p) symbol group sets arranged at the rearmost from the R (p) symbol group sets; or the like, or, alternatively,
selecting G (p) symbol group sets from the R (p) symbol group sets according to a predetermined rule; wherein G (p) is not more than R (p).
Further, the first selecting module 182 is specifically configured to:
selecting g (p) × a (p) × r (p) sets of the symbol groups. Wherein, A (p) is not less than 1, R (p) is the repeated transmission times of the random access channel supported on the random access channel resource with index p.
Illustratively, the P sets of time-frequency resources include at least one of:
k with same coverage enhancement leveljA set of time-frequency resources; where j is the coverage enhancement level index, KjNot less than 2; and said K isjThe time frequency resource sets are positioned on different frequency band resources;
covering C time frequency resource sets with different enhancement levels; wherein c is greater than or equal to 2; the C time frequency resource sets are positioned on the same frequency band resource;
j time frequency resource sets covering the enhancement levels, wherein J is a covering enhancement level index, J is more than or equal to 0 and less than or equal to J-1, the number of the time frequency resources covering the enhancement levels and is J is K, and K is more than or equal to 2 and less than or equal to P; the K time frequency resource sets with the coverage enhancement level j are positioned on different frequency band resources. It should be noted that the number of time-frequency resources of J coverage enhancement levels is K, that is, the number of time-frequency resources of coverage enhancement levels with an index J equal to 0, 1, 2, … J-1 is K.
Further, referring to fig. 20, the network element 18 further includes a second selecting module 183, configured to select, from the time-frequency resource set with an index p, g (p) symbol group sets as transmission resources of the positioning reference signal;
wherein, the single symbol group set comprises 4 symbol groups; each symbol group occupies the same subcarriers in the frequency domain.
Further, the second selecting module 183 is configured to:
selecting the first G (p) symbol group sets in the R (p) symbol group sets; or the like, or, alternatively,
selecting the G (p) symbol group sets arranged at the rearmost from the R (p) symbol group sets; or the like, or, alternatively,
selecting G (p) symbol group sets from the R (p) symbol group sets according to a predetermined rule;
wherein G (p) is not more than R (p).
Further, the second selecting module 183 is configured to select g (p) ═ a (p) × r (p) symbol group sets. Wherein A (p) is not less than 1; r (p) is the number of repeated transmissions of a random access channel supported on the random access channel resource with index p.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of a hardware embodiment, a software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.

Claims (35)

1. A method of positioning, the method comprising:
a first network element sends a positioning reference signal to a second network element; the positioning reference signals are transmitted on N frequency band resources, wherein N is an integer not less than 1; the positioning reference signal occupies at least one symbol group, wherein each symbol group occupies the same subcarrier in the frequency domain, and each symbol group is composed of a cyclic prefix CP and at least one symbol in the time domain;
for eight symbol groups adjacent to each other in a time domain in a positioning reference signal sent by the first network element, resources occupied by the symbol groups 1 to 4 are contained in a first time-frequency resource block, and resources occupied by the symbol groups 5 to 8 are contained in a second time-frequency resource block; the time domain length of the first time-frequency resource block is the time domain length corresponding to 4 symbol groups, the frequency domain length of the first time-frequency resource block is 12 subcarriers, the index of the initial subcarrier is k, and k is an integer greater than or equal to 0; the time domain length of the second time frequency resource block is the time domain length corresponding to 4 symbol groups, the frequency domain length of the second time frequency resource block is 12 subcarriers, the index of an initial subcarrier is k + D, and D is the frequency domain interval between the initial subcarrier of the first time frequency resource block and the initial subcarrier of the second time frequency resource block; the time domain interval between the first time frequency resource block and the second time frequency resource block is T time units, and T is more than or equal to 0;
for eight symbol groups adjacent to each other in a time domain in a positioning reference signal sent by the first network element, resources occupied by the symbol groups 1 to 4 are contained in a first time-frequency resource block, and resources occupied by the symbol groups 5 to 8 are contained in a second time-frequency resource block; the first time-frequency resource block is composed of A first time-frequency resource subblocks, wherein A is an integer greater than or equal to 1, the time domain length of each first time-frequency resource subblock is the time domain length corresponding to 4 symbol groups, and the frequency domain length of each first time-frequency resource subblock is 12 subcarriers; the second time frequency resource block is composed of B second time frequency resource sub-blocks, wherein B is an integer greater than or equal to 1, the time domain length of the second time frequency resource sub-blocks is the time domain length corresponding to 4 symbol groups, and the frequency domain length of the second time frequency resource sub-blocks is 12 subcarriers; the first time frequency resource block and the second time frequency resource block are separated by T time units in the time domain, and T is more than or equal to 0;
for 16 symbol groups adjacent to each other in a time domain in a positioning reference signal sent by the first network element, resources occupied by the symbol groups 1 to 8 are contained in a first time-frequency resource block, and resources occupied by the symbol groups 9 to 16 are contained in a second time-frequency resource block; the time domain length of the first time-frequency resource block is the time domain length corresponding to 8 symbol groups, the frequency domain length of the first time-frequency resource block is 12 subcarriers, the index of a starting subcarrier is k, and k is an integer greater than or equal to 0; the time domain length of the second time frequency resource block is the time domain length corresponding to 8 symbol groups, the frequency domain length of the second time frequency resource block is 12 subcarriers, and the index of the initial subcarrier is k + D; the first time frequency resource block and the second time frequency resource block are separated by T time units in a time domain, and T is more than or equal to 0;
for 16 symbol groups adjacent to each other in a time domain in a positioning reference signal sent by the first network element, resources occupied by the symbol groups 1 to 8 are contained in a first time-frequency resource block, and resources occupied by the symbol groups 9 to 16 are contained in a second time-frequency resource block; the first time-frequency resource block is composed of A first time-frequency resource sub-blocks, wherein A is an integer greater than or equal to 1, the time domain length of each first time-frequency resource sub-block is the time domain length corresponding to 8 symbol groups, and the frequency domain length of each first time-frequency resource block is 12 subcarriers; the second time frequency resource block is composed of B second time frequency resource sub-blocks, wherein B is an integer greater than or equal to 1, the time domain length of the second time frequency resource sub-blocks is the time domain length corresponding to 8 symbol groups, and the frequency domain length of the second time frequency resource block is 12 subcarriers; the first time frequency resource block and the second time frequency resource block are separated by T time units in the time domain, and T is more than or equal to 0;
the frequency band resource comprises P subcarrier sets, wherein P is more than or equal to 1; every 4 symbol groups form a symbol group set, subcarriers occupied by symbol groups in the same symbol group set during transmission belong to the same subcarrier set, and each subcarrier set comprises 12 subcarriers.
2. The method according to claim 1, wherein the time-frequency resources occupied by the eight symbol groups satisfy a preset first mapping relationship.
3. The method of claim 2, wherein the positioning reference signal index selected from the symbol groups 1 to 4 is n, wherein 0 ≦ n ≦ 11; the index of a positioning reference signal selected from the symbol groups 5 to 8 is m, wherein m is more than or equal to 0 and less than or equal to 11; and m ═ n.
4. The method of claim 2, wherein the positioning reference signal index selected from the symbol groups 1 to 4 is n, wherein 0 ≦ n ≦ 11; the index of a positioning reference signal selected from the symbol groups 5 to 8 is m, wherein m is more than or equal to 0 and less than or equal to 11; where m + delta or m mod ((n + delta), 12), delta is a random number or a fixed value, and mod is the remainder.
5. The method of claim 1, wherein the symbol groups 1 to 4 are configured in a same first time-frequency resource sub-block; the symbol groups 5 to 8 are configured in the same second time frequency resource sub-block.
6. The method of claim 5, wherein the positioning reference signal index selected from the symbol groups 1 to 4 is n, wherein 0 ≦ n ≦ 11; the index of a positioning reference signal selected from the symbol groups 5 to 8 is m, wherein m is more than or equal to 0 and less than or equal to 11; and m ═ n.
7. The method of claim 5, wherein the positioning reference signal index selected from the symbol groups 1 to 4 is n, wherein 0 ≦ n ≦ 11; the index of a positioning reference signal selected from the symbol groups 5 to 8 is m, wherein m is more than or equal to 0 and less than or equal to 11; where m + delta or m mod ((n + delta), 12), delta is a random number or a fixed value, and mod is the remainder.
8. The method according to claim 5, wherein the structure of the first time-frequency resource sub-block satisfies a preset second mapping relationship.
9. The method according to claim 5, wherein the structure of the second time-frequency resource sub-block satisfies a preset third mapping relationship.
10. The method according to claim 8 or 9, wherein q ═ k + D is satisfied between the starting subcarrier index k of the first time-frequency resource subblock and the starting subcarrier index q of the second time-frequency resource subblock, where D is an integer.
11. The method according to any of claims 1 and 7 to 9, wherein the first time-frequency resource block and the second time-frequency resource block configure random access channel resources at a preset coverage enhancement level, or configure random access channel resources at a preset coverage enhancement level and on one of the frequency band resources.
12. The method according to claim 11, wherein for the random access channel resource of the preset coverage enhancement level or the random access channel resource of the preset coverage enhancement level and on one of the frequency band resources, consecutive 24 subcarriers are occupied in the frequency domain and starting subcarrier index is k, and a-B-1 and D-12.
13. The method according to claim 11, wherein for the random access channel resources of the preset coverage enhancement level or the random access channel resources of the preset coverage enhancement level and on one of the frequency band resources, 36 consecutive subcarriers are occupied in the frequency domain and the starting subcarrier index is also k, and a-B-1 and D-24.
14. The method according to claim 11, wherein for the random access channel resource of the preset coverage enhancement level or the random access channel resource of the preset coverage enhancement level and on one of the frequency band resources, consecutive 48 subcarriers are occupied in the frequency domain and the starting subcarrier index is also k, and a-B-1 and D-36.
15. The method according to claim 11, wherein for the random access channel resources of the preset coverage enhancement level or the random access channel resources of the preset coverage enhancement level and on one of the frequency band resources, consecutive 48 subcarriers are occupied in the frequency domain and the starting subcarrier index is also k, and a-B-2 and D-24.
16. The method according to claim 1, wherein the time-frequency resources occupied by the 16 symbol groups satisfy a preset fourth mapping relationship.
17. The method of claim 16, wherein the positioning reference signal index selected from the symbol groups 1 to 8 is n, wherein 0 ≦ n ≦ 11; the index of a positioning reference signal selected from the symbol group 9 to the symbol group 16 is m, wherein m is more than or equal to 0 and less than or equal to 11; and m ═ n.
18. The method of claim 16, wherein the positioning reference signal index selected from the symbol groups 1 to 8 is n, wherein 0 ≦ n ≦ 11; the index of a positioning reference signal selected from the symbol group 9 to the symbol group 16 is m, wherein m is more than or equal to 0 and less than or equal to 11; where m + delta or m mod ((n + delta), 12), delta is a random number or a fixed value, and mod is the remainder.
19. The method of claim 1, wherein the symbol groups 1 to 8 are configured in the same first time-frequency resource sub-block; the symbol groups 9 to 16 are configured in the same second time-frequency resource sub-block.
20. The method of claim 19, wherein the positioning reference signal index selected from symbol group 1 to symbol group 8 is n, wherein 0 ≦ n ≦ 11; the index of a positioning reference signal selected from the symbol group 9 to the symbol group 16 is m, wherein m is more than or equal to 0 and less than or equal to 11; and m ═ n.
21. The method of claim 19, wherein the positioning reference signal index selected from symbol group 1 to symbol group 8 is n, wherein 0 ≦ n ≦ 11; the index of a positioning reference signal selected from the symbol group 9 to the symbol group 16 is m, wherein m is more than or equal to 0 and less than or equal to 11; where m + delta or m mod ((n + delta), 12), delta is a random number or a fixed value, and mod is the remainder.
22. The method according to claim 19, wherein the structure of the first time-frequency resource sub-block satisfies a preset fifth mapping relationship.
23. The method according to claim 19, wherein the structure of the second time-frequency resource sub-block satisfies a preset sixth mapping relationship.
24. The method according to claim 22 or 23, wherein q ═ k + D is satisfied between the starting subcarrier index k of the first time-frequency resource sub-block and the starting subcarrier index q of the second time-frequency resource sub-block, where D is an integer.
25. The method of claim 20, wherein a set of subcarriers occupied by two sets of symbol groups adjacent in a time domain when transmitting are different.
26. The method of claim 1, wherein a subset of subcarriers occupied by the 1 st and 2 nd symbol groups when transmitting is the same in 4 symbol groups of a single symbol group set; the 3 rd symbol group and the 4 th symbol group occupy the same subcarrier subsets during transmission, and the subcarrier subsets occupied by the 1 st symbol group and the 2 nd symbol group during transmission are different from the subcarrier subsets occupied by the 3 rd symbol group and the 4 th symbol group during transmission; wherein, 1 of the subcarrier sets comprises 2 subcarrier subsets, and each subcarrier subset comprises 6 subcarriers.
27. The method of claim 1, wherein in two symbol group sets adjacent in a time domain, a subcarrier subset index occupied by a 1 st and a 2 nd symbol group in a first symbol group set when transmitting is different from a subcarrier subset index occupied by a 1 st and a 2 nd symbol group in a second symbol group set when transmitting; and the subcarrier subset indexes occupied by the 3 rd and 4 th symbol groups in the first symbol group set when in transmission are different from the subcarrier subset indexes occupied by the 3 rd and 4 th symbol groups in the second symbol group set when in transmission.
28. The method of claim 1, wherein in two symbol group sets adjacent in a time domain, a subcarrier subset index occupied by a 1 st and a 2 nd symbol groups in a first symbol group set when transmitting is the same as a subcarrier subset index occupied by a 3 rd and a 4 th symbol groups in a second symbol group set when transmitting; and the subcarrier subset indexes occupied by the 3 rd and 4 th symbol groups in the first symbol group set when being transmitted are the same as the subcarrier subset indexes occupied by the 1 st and 2 nd symbol groups in the second symbol group set when being transmitted.
29. A method of positioning, the method comprising:
a first network element sends a positioning reference signal to a second network element;
the resources of the positioning reference signal are configured in P time frequency resource sets, the index is P, and P is more than or equal to 0 and less than or equal to P-1;
the P time frequency resource sets are configured on N frequency band resources, wherein P is an integer not less than 1, and N is an integer not less than 1;
the time frequency resource set is a random access channel resource meeting a preset coverage enhancement level; or, the time-frequency resource set is a random access channel resource which meets a preset coverage enhancement level and is on one frequency band resource;
the P time frequency resource sets comprise at least one of the following:
k with same coverage enhancement leveljA set of time-frequency resources; where j is the coverage enhancement level index, KjNot less than 2; and said K isjThe time frequency resource sets are positioned on different frequency band resources;
covering C time frequency resource sets with different enhancement levels; wherein c is greater than or equal to 2; the C time frequency resource sets are positioned on the same frequency band resource;
j time frequency resource sets covering the enhancement levels, wherein J is a covering enhancement level index, J is more than or equal to 0 and less than or equal to J-1, the number of the time frequency resources covering the enhancement levels and is J is K, and K is more than or equal to 2 and less than or equal to P; k time frequency resource sets with coverage enhancement level j are positioned on different frequency band resources;
before the first network element sends the positioning reference signal to the second network element, the method further includes:
the first network element selects G (p) symbol group sets from the time frequency resource set with the index of p as the sending resources of the positioning reference signals;
wherein, the single symbol group set comprises 4 symbol groups; each symbol group occupies the same subcarrier in the frequency domain, and consists of a cyclic prefix CP and 5 symbols in the time domain;
the first network element selects g (p) symbol group sets from the time-frequency resource set with an index of p as transmission resources of a positioning reference signal, and specifically includes:
the first network element selecting the first G (p) symbol group sets of the R (p) symbol group sets; or the like, or, alternatively,
the first network element selecting a set of G (p) symbol groups arranged at the rearmost among the R (p) symbol group sets; or the like, or, alternatively,
the first network element selects G (p) symbol group sets from R (p) symbol group sets according to a predetermined rule; or the like, or, alternatively,
the first network element selecting g (p) ═ a (p) xr (p) the set of symbol groups;
wherein G (p) is less than or equal to R (p), A (p) is more than or equal to 1, and R (p) is the repeated transmission times of the random access channel supported on the random access channel resource with the index p.
30. The method of claim 29 wherein the P sets of time-frequency resources correspond to P different levels of coverage enhancement.
31. The method according to claim 29 or 30, wherein the resource configuration of the positioning reference signal is in a non-contention random access channel resource of the random access channel resources.
32. The method according to claim 29 or 30, wherein the frequency domain positions of the P sets of time-frequency resources are different;
or, the time domain positions of the P time frequency resource sets are not overlapped.
33. The method of claim 29, wherein the resources of the positioning reference signal are configured in non-contention random access channel resources of the random access channel resources.
34. A network element, wherein the network element comprises a first sending module, configured to send a positioning reference signal to an opposite network element; the positioning reference signals are transmitted on N frequency band resources, wherein N is an integer not less than 1; the positioning reference signal occupies at least one symbol group, wherein each symbol group occupies the same subcarrier in the frequency domain, and each symbol group is composed of a cyclic prefix CP and at least one symbol in the time domain;
for eight symbol groups adjacent to each other in the time domain in the positioning reference signal sent by the first sending module, resources occupied by the symbol groups 1 to 4 are contained in a first time-frequency resource block, and resources occupied by the symbol groups 5 to 8 are contained in a second time-frequency resource block; the time domain length of the first time-frequency resource block is the time domain length corresponding to 4 symbol groups, the frequency domain length of the first time-frequency resource block is 12 subcarriers, the index of the initial subcarrier is k, and k is an integer greater than or equal to 0; the time domain length of the second time frequency resource block is the time domain length corresponding to 4 symbol groups, the frequency domain length of the second time frequency resource block is 12 subcarriers, the index of an initial subcarrier is k + D, and D is the frequency domain interval between the initial subcarrier of the first time frequency resource block and the initial subcarrier of the second time frequency resource block; the time domain interval between the first time frequency resource block and the second time frequency resource block is T time units, and T is more than or equal to 0;
for eight symbol groups adjacent to each other in the time domain in the positioning reference signal sent by the first sending module, resources occupied by the symbol groups 1 to 4 are contained in a first time-frequency resource block, and resources occupied by the symbol groups 5 to 8 are contained in a second time-frequency resource block; the first time-frequency resource block is composed of A first time-frequency resource subblocks, wherein A is an integer greater than or equal to 1, the time domain length of each first time-frequency resource subblock is the time domain length corresponding to 4 symbol groups, and the frequency domain length of each first time-frequency resource subblock is 12 subcarriers; the second time frequency resource block is composed of B second time frequency resource sub-blocks, wherein B is an integer greater than or equal to 1, the time domain length of the second time frequency resource sub-blocks is the time domain length corresponding to 4 symbol groups, and the frequency domain length of the second time frequency resource sub-blocks is 12 subcarriers; the first time frequency resource block and the second time frequency resource block are separated by T time units in the time domain, and T is more than or equal to 0;
for 16 symbol groups adjacent to each other in the time domain in the positioning reference signal sent by the first sending module, resources occupied by the symbol groups 1 to 8 are contained in a first time-frequency resource block, and resources occupied by the symbol groups 9 to 16 are contained in a second time-frequency resource block; the time domain length of the first time-frequency resource block is the time domain length corresponding to 8 symbol groups, the frequency domain length of the first time-frequency resource block is 12 subcarriers, the index of a starting subcarrier is k, and k is an integer greater than or equal to 0; the time domain length of the second time frequency resource block is the time domain length corresponding to 8 symbol groups, the frequency domain length of the second time frequency resource block is 12 subcarriers, and the index of the initial subcarrier is k + D; the first time frequency resource block and the second time frequency resource block are separated by T time units in a time domain, and T is more than or equal to 0;
for 16 symbol groups adjacent to each other in the time domain in the positioning reference signal sent by the first sending module, resources occupied by the symbol groups 1 to 8 are contained in a first time-frequency resource block, and resources occupied by the symbol groups 9 to 16 are contained in a second time-frequency resource block; the first time-frequency resource block is composed of A first time-frequency resource sub-blocks, wherein A is an integer greater than or equal to 1, the time domain length of each first time-frequency resource sub-block is the time domain length corresponding to 8 symbol groups, and the frequency domain length of each first time-frequency resource block is 12 subcarriers; the second time frequency resource block is composed of B second time frequency resource sub-blocks, wherein B is an integer greater than or equal to 1, the time domain length of the second time frequency resource sub-blocks is the time domain length corresponding to 8 symbol groups, and the frequency domain length of the second time frequency resource block is 12 subcarriers; the first time frequency resource block and the second time frequency resource block are separated by T time units in the time domain, and T is more than or equal to 0;
the frequency band resource comprises P subcarrier sets, wherein P is more than or equal to 1; every 4 symbol groups form a symbol group set, subcarriers occupied by symbol groups in the same symbol group set during transmission belong to the same subcarrier set, and each subcarrier set comprises 12 subcarriers.
35. A network element, wherein the network element comprises: a second sending module, configured to send a positioning reference signal to an opposite-end network element;
the resources of the positioning reference signal are configured in P time frequency resource sets, the index is P, and P is more than or equal to 0 and less than or equal to P-1;
the P time frequency resource sets are configured on N frequency band resources, wherein P is an integer not less than 1, and N is an integer not less than 1;
the P time frequency resource sets comprise at least one of the following:
k with same coverage enhancement leveljA set of time-frequency resources; where j is the coverage enhancement level index, KjNot less than 2; and said K isjThe time frequency resource sets are positioned on different frequency band resources;
covering C time frequency resource sets with different enhancement levels; wherein c is greater than or equal to 2; the C time frequency resource sets are positioned on the same frequency band resource;
j time frequency resource sets covering the enhancement levels, wherein J is a covering enhancement level index, J is more than or equal to 0 and less than or equal to J-1, the number of the time frequency resources covering the enhancement levels and is J is K, and K is more than or equal to 2 and less than or equal to P; k time frequency resource sets with coverage enhancement level j are positioned on different frequency band resources;
the network element further comprises a first selection module, configured to select g (p) symbol group sets from the time-frequency resource set with an index of p as transmission resources of a positioning reference signal;
wherein, the single symbol group set comprises 4 symbol groups; each symbol group occupies the same subcarrier in the frequency domain, and consists of a cyclic prefix CP and 5 symbols in the time domain;
the first selecting module is specifically configured to:
selecting the first G (p) symbol group sets in the R (p) symbol group sets; or the like, or, alternatively,
selecting the G (p) symbol group sets arranged at the rearmost from the R (p) symbol group sets; or the like, or, alternatively,
selecting G (p) symbol group sets from the R (p) symbol group sets according to a predetermined rule; or the like, or, alternatively,
selecting G (p) × R (p) symbol group sets,
wherein G (p) is less than or equal to R (p), A (p) is more than or equal to 1, and R (p) is the repeated transmission times of the random access channel supported on the random access channel resource with the index p.
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109802788B (en) 2017-11-17 2022-02-25 中兴通讯股份有限公司 Signal generating and transmitting method
CN113708911B (en) * 2018-05-10 2023-04-07 中兴通讯股份有限公司 Signal transmission method and device, storage medium, and electronic device
CN110768761B (en) * 2018-07-26 2022-07-15 中兴通讯股份有限公司 Method and device for generating positioning reference signal, base station and readable storage medium
CN110856096B (en) * 2018-07-30 2022-07-15 中兴通讯股份有限公司 Positioning reference signal generation method, related device, communication system and storage medium
US11290229B2 (en) * 2018-08-10 2022-03-29 Mediatek Inc. Reference signal design for NR downlink positioning: supplementary RS design
EP4364368A2 (en) * 2021-06-30 2024-05-08 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Apparatus and method for providing a modified ofdm frame structure

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101534285A (en) * 2009-04-09 2009-09-16 中兴通讯股份有限公司 A sending method for reference signals

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101738162B1 (en) * 2009-04-10 2017-05-22 엘지전자 주식회사 Method and apparatus of transmitting positioning reference signal in wireless communication system
CN101931862B (en) * 2009-06-22 2013-11-06 华为技术有限公司 Positioning information transmitting method and device
US8600398B2 (en) * 2009-11-03 2013-12-03 Telefonaktiebolaget Lm Ericsson (Publ) Method, apparatus and system for defining positioning configuration in a wireless network
CN103002577B (en) * 2009-11-13 2016-03-16 北京三星通信技术研究有限公司 A kind of method of transmission and receiving location reference signals
CN101778068B (en) * 2009-12-25 2014-01-01 中兴通讯股份有限公司 Frequency domain position-confirming method and device of positioning reference signal
US20110230144A1 (en) * 2010-03-17 2011-09-22 Iana Siomina Method and Apparatus for Muting Signaling in a Wireless Communication Network
US8848638B2 (en) * 2011-06-27 2014-09-30 Telefonaktiebolaget L M Ericsson (Publ) Cellular communication system support for limited bandwidth communication devices
WO2014185748A1 (en) * 2013-05-16 2014-11-20 엘지전자 주식회사 Signal transmission method for coverage improvement and apparatus for same
KR101786279B1 (en) * 2013-05-30 2017-11-15 엘지전자 주식회사 Method and device for decoding downlink data
US9432809B2 (en) * 2013-07-12 2016-08-30 Qualcomm Incorporated Providing OTDOA PRS assistance data
JP6535970B2 (en) * 2014-02-26 2019-07-03 シャープ株式会社 Base station apparatus, terminal apparatus, and wireless communication method

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101534285A (en) * 2009-04-09 2009-09-16 中兴通讯股份有限公司 A sending method for reference signals

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