CN108429610B

CN108429610B - Physical broadcast channel transmission method, equipment and system

Info

Publication number: CN108429610B
Application number: CN201810167978.5A
Authority: CN
Inventors: 夏金环; 余政
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2012-11-27
Filing date: 2012-11-27
Publication date: 2021-01-29
Anticipated expiration: 2032-11-27
Also published as: CN103840932B; CN108429610A; WO2014082575A1; CN103840932A

Abstract

The invention discloses a method, a device and a system for transmitting a physical broadcast channel, relating to the field of communicationThe signal field can improve the intensity of PBCH signals received by the user equipment and improve the communication quality. The physical broadcast channel transmission method comprises the following steps: dividing PBCH data into n PBCH data segments, wherein n is 2^xX is an integer greater than or equal to 0; repeatedly mapping the mth PBCH data segment on a preset resource position in a preset PBCH for at least 2 times, wherein m is more than or equal to 1 and less than or equal to n, and the preset PBCH is provided with 2^yAnd y is more than or equal to x. The invention is used for data transmission of the physical broadcast channel.

Description

Physical broadcast channel transmission method, equipment and system

Technical Field

The present invention relates to the field of communications, and in particular, to a method, device, and system for transmitting a physical broadcast channel.

Background

At present, the structure of a radio frame is: a radio frame includes 10 subframes, each subframe includes 2 slots, and normally, slots in 10 subframes are denoted by the numbers of 0, 1, 2, …, 19 and 20, that is, a subframe 0 in a radio frame is composed of a slot 0 and a slot 1, a subframe 1 is composed of a slot 2 and a slot 3, and a subframe … and 9 is composed of a slot 19 and a slot 20.

In an OFDM (Orthogonal Frequency Division Multiplexing) system, a guard interval or CP (Cyclic Prefix) is usually added before each OFDM symbol to eliminate inter-symbol interference caused by multipath of a signal. Two CP lengths are defined in LTE: one is a normal CP and the other is an extended CP. When the normal CP is added before the OFDM symbol, the slot of the subframe of the corresponding radio frame includes 7 OFDM symbols, and when the extended CP is added before the OFDM symbol, the slot of the subframe of the corresponding radio frame includes 6 OFDM symbols.

In the prior art, a transmission method of a PBCH (Physical Broadcast Channel) is as follows: since the transmission time interval of the existing PBCH is 40ms, that is, one transmission cycle includes 4 radio frames, in the time domain, the base station averagely divides the PBCH data into 4 segments, and respectively and sequentially sends the 4 segments to the subframes corresponding to the 4 radio frames in one transmission cycle. For example, in number 1, number 2, number 3 and number 4 radio frames, in the time domain, the base station maps 4 data segments of PBCH on the first 4 OFDM symbols of the number 1 slot of the number 0 subframe in each radio frame, respectively; in the frequency domain, the frequency domain lengths of 6 PRBs (Physical resource blocks) occupying the center of the carrier are mapped in sequence from the frequency domain to the time domain. It should be noted that 1 PRB occupies 1 slot in the time domain and is composed of 12 subcarriers in the frequency domain. However, when the method in the prior art is used for physical broadcast channel transmission, the PBCH signal received by the user equipment located in the basement or the user equipment with large link loss is attenuated, so that the PBCH signal received by the user equipment has low strength and poor communication quality.

Disclosure of Invention

Embodiments of the present invention provide a method, a device, and a system for transmitting a physical broadcast channel, which can improve the strength of a PBCH signal received by a user equipment and improve communication quality.

In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:

in a first aspect, an embodiment of the present invention provides a method for transmitting a physical broadcast channel PBCH, including:

dividing PBCH data into n PBCH data segments, wherein n is 2^xX is an integer greater than or equal to 0;

repeatedly mapping the mth PBCH data segment on a preset resource position in a preset PBCH for at least 2 times, wherein m is more than or equal to 1 and less than or equal to n, and the preset PBCH is provided with 2^yAnd y is more than or equal to x.

In a first possible implementation manner with reference to the first aspect, the repeatedly mapping the mth PBCH data segment at least 2 times on a preset resource location in a preset PBCH includes:

repeatedly mapping the mth PBCH data segment on a preset resource position of the mth radio frame in the preset PBCH for at least 2 times.

In a second possible implementation manner with reference to the first aspect, where x is y, the repeatedly mapping the mth PBCH data segment on a preset resource location of an mth radio frame in the preset PBCH at least 2 times includes:

and mapping the mth PBCH data segment on a preset Orthogonal Frequency Division Multiplexing (OFDM) symbol of each subframe from No. 0 to No. 9 subframes in the mth radio frame in the preset PBCH.

With reference to the first aspect or the first possible implementation manner of the first aspect, in a third possible implementation manner, the repeatedly mapping the mth PBCH data segment at least 2 times on a preset resource location of an mth radio frame in a preset PBCH includes:

and repeatedly mapping the mth PBCH data segment on a preset OFDM symbol of each subframe from No. 0 to No. 9 subframes in the mth radio frame in the preset PBCH for at least 2 times.

In a fourth possible implementation manner in combination with the first aspect, x < y; the repeatedly mapping the mth PBCH data segment at least 2 times on a preset resource location in a preset PBCH includes:

mapping the mth PBCH data segment to a preset resource position of an mth radio frame in the preset PBCH;

mapping the mth PBCH data segment to a preset resource position of a pth radio frame in the preset PBCH, wherein p is m +2^xX t is an integer, t is more than or equal to 1 and less than or equal to 2^y-x-1。

In a second aspect, an embodiment of the present invention further provides a method for transmitting a physical broadcast channel PBCH, including:

receiving an mth PBCH data segment at least 2 times repeatedly in a preset resource location in a preset PBCH, the preset PBCH being set to 2^yA wireless frame;

wherein the mth PBCH data segment is any one of n PBCH data segments into which PBCH data is divided, and n is 2^xWherein x is an integer greater than or equal to 0, m is greater than or equal to 1 and less than or equal to n, and y is greater than or equal to x.

In a first possible implementation manner in combination with the second aspect, the repeating, by at least 2 times, the receiving the mth PBCH data segment at a preset resource location in a preset PBCH includes:

repeating the receiving of the mth PBCH data segment at least 2 times at a preset resource location of the mth radio frame in the preset PBCH.

In a second possible implementation manner in combination with the second aspect, the repeating, at least 2 times, the receiving of the mth PBCH data segment in a preset resource location of the mth radio frame in a preset PBCH includes:

receiving the mth PBCH data segment on a preset Orthogonal Frequency Division Multiplexing (OFDM) symbol of each subframe from subframe No. 0 to subframe No. 9 in the mth radio frame in the preset PBCH.

In a third possible implementation manner with reference to the second aspect, the repeating, at least 2 times, the receiving of the mth PBCH data segment in a preset resource location of an mth radio frame in a preset PBCH includes:

repeatedly receiving the mth PBCH data segment at least 2 times on a preset OFDM symbol of each subframe in subframes No. 0 to No. 9 in the mth radio frame in the preset PBCH.

In a fourth possible implementation manner in combination with the second aspect, x < y; the repeating the receiving of the mth PBCH data segment at least 2 times at a preset resource location in a preset PBCH comprises:

receiving the mth PBCH data segment at a preset resource position of an mth radio frame in the preset PBCH;

receiving the mth PBCH data segment at a preset resource location of a pth radio frame in the preset PBCH, where p is m +2^xX t is an integer, t is more than or equal to 1 and less than or equal to 2^y-x-1。

In a third aspect, an embodiment of the present invention provides a base station, including:

a segmentation unit for dividing PBCH data into n PBCH data segments, n being 2^xX is an integer greater than or equal to 0;

a first mapping unit for repeatedly mapping the mth PBCH data segment in the preset PBCH for at least 2 timesM is more than or equal to 1 and less than or equal to n, and the PBCH is preset with 2^yAnd y is more than or equal to x.

In a first possible implementation manner with reference to the third aspect, when x is equal to y, the first mapping unit is further configured to:

In a second possible implementation manner with reference to the third aspect, the base station further includes:

a second mapping unit, configured to map the mth PBCH data segment to a preset orthogonal frequency division multiplexing, OFDM, symbol of each subframe in subframes No. 0 to No. 9 in an mth radio frame in the preset PBCH.

In a third possible implementation manner with reference to the third aspect, the second mapping unit is further configured to:

In a fourth possible implementation manner with reference to the third aspect, when x < y, the first mapping unit is further configured to:

In a fourth aspect, an embodiment of the present invention provides a user equipment, including:

a first receiving unit, configured to repeat receiving the mth PBCH data segment at least 2 times at a preset resource location in a preset PBCH, where the preset PBCH is set to 2^yA wireless frame;

wherein the mth PBCH data segment is any one of n PBCH data segments into which PBCH data is divided, and n is 2^xAnd x is largeIs an integer equal to or greater than 0, m is greater than or equal to 1 and less than or equal to n, and y is greater than or equal to x.

In a first possible implementation manner with reference to the fourth aspect, when x is equal to y, the first receiving unit is further configured to:

In a second possible implementation manner with reference to the fourth aspect, the user equipment further includes:

a second receiving unit, configured to receive the mth PBCH data segment on a preset orthogonal frequency division multiplexing OFDM symbol of each of subframes 0 to 9 in an mth radio frame in the preset PBCH.

In a third possible implementation manner combining the fourth aspect, the second receiving unit is further configured to:

In a fourth possible implementation manner combined with the fourth aspect, the first receiving unit is further configured to:

In a fifth aspect, an embodiment of the present invention provides a physical broadcast channel transmission system, including:

a base station as any of the above;

and a user equipment as described in any of the above.

In a sixth aspect, an embodiment of the present invention provides a method for transmitting a physical broadcast channel, including:

dividing PBCH data into n PBCH data segments, wherein n is 2^xWherein x is an integer greater than 2;

will be firstm PBCH data segments are mapped on preset resource positions in a preset PBCH, m is more than or equal to 1 and less than or equal to n, and the preset PBCH is provided with 2^yAnd a radio frame, wherein y is x.

In a seventh aspect, an embodiment of the present invention further provides a method for transmitting a physical broadcast channel, where the method includes:

receiving an mth PBCH data segment at a preset resource location in a preset PBCH, the preset PBCH being set to 2^yA wireless frame;

wherein the mth PBCH data segment is any one of n PBCH data segments into which PBCH data is divided, and n is 2^xThe x is an integer larger than 2, m is more than or equal to 1 and less than or equal to n, and y is x.

In an eighth aspect, an embodiment of the present invention provides a base station, including:

a segmentation unit for dividing PBCH data into n PBCH data segments, wherein n is 2^xWherein x is an integer greater than 2;

a first mapping unit, configured to map the mth PBCH data segment to a preset resource location in a preset PBCH, where m is greater than or equal to 1 and is less than or equal to n, and the preset PBCH is set with 2^yAnd a radio frame, wherein y is x.

In a ninth aspect, an embodiment of the present invention provides a user equipment, including:

a first receiving unit, configured to receive an mth PBCH data segment at a preset resource location in a preset PBCH, where the preset PBCH is set to 2^yA wireless frame;

In a tenth aspect, an embodiment of the present invention provides a physical broadcast channel transmission system, including:

the base station according to the eighth aspect above;

and the user equipment of the ninth aspect above.

The embodiment of the invention provides a method, equipment and a system for transmitting a physical broadcast channel PBCH, which comprises the following steps: dividing PBCH data into n PBCsH data segmentation, said n ═ 2^xX is an integer greater than or equal to 0; repeatedly mapping the mth PBCH data segment on a preset resource position in a preset PBCH for at least 2 times, wherein m is more than or equal to 1 and less than or equal to n, and the preset PBCH is provided with 2^yAnd y is more than or equal to x. Thus, in the embodiment of the present invention, the base station repeatedly maps the mth PBCH data segment to the preset resource position in the preset PBCH for at least 2 times, and in the prior art, the base station directly maps the mth PBCH data segment to the first 4 OFDM symbols of the 1 st slot of the 0 th subframe of the mth radio frame in the preset PBCH.

Further, an embodiment of the present invention provides a method, a device, and a system for transmitting a physical broadcast channel, including: dividing PBCH data into n PBCH data segments, wherein n is 2^xWherein x is an integer greater than 2; mapping the mth PBCH data segment on a preset resource position in a preset PBCH, wherein m is more than or equal to 1 and less than or equal to n, and the preset PBCH is provided with 2^yAnd a radio frame, wherein y is x. Thus, in the embodiment of the present invention, the base station divides the PBCH data into n PBCH data segments, where n is 2^xX is an integer greater than 2, and data segmentation of PBCH is added; mapping the mth PBCH data segment on a preset resource position in a preset PBCH, wherein m is more than or equal to 1 and less than or equal to n, and the preset PBCH is provided with 2^yCompared with the prior art, the invention has the advantages that the number of PBCH data segments is increased, the length of PBCH data segment mapping is increased, the probability of PBCH signals received by user equipment is increased, and therefore, the communication quality is improved.

Drawings

Fig. 1 is a diagram illustrating PBCH resource mapping in the prior art;

fig. 2 is a flowchart of a method for transmitting a physical broadcast channel according to embodiment 1 of the present invention;

fig. 3 is a PBCH resource mapping scheme provided in embodiment 1 of the present invention;

fig. 4 is another PBCH resource mapping scheme provided in embodiment 1 of the present invention;

fig. 5 is a diagram of another PBCH resource mapping scheme provided in embodiment 1 of the present invention;

fig. 6 is a diagram of another PBCH resource mapping scheme provided in embodiment 1 of the present invention;

fig. 7 is a diagram of another PBCH resource mapping scheme provided in embodiment 1 of the present invention;

fig. 8 is a flowchart of another physical broadcast channel transmission method according to embodiment 1 of the present invention;

fig. 9 is a block diagram of a base station according to embodiment 2 of the present invention;

fig. 10 is a block diagram of another base station according to embodiment 2 of the present invention;

fig. 11 is a block diagram of a user equipment according to embodiment 2 of the present invention;

fig. 12 is a block diagram of another ue according to embodiment 2 of the present invention;

fig. 13 is a diagram of a physical broadcast channel transmission system according to embodiment 3 of the present invention;

fig. 14 is a block diagram of another base station according to embodiment 3 of the present invention;

fig. 15 is a block diagram of another ue according to embodiment 3 of the present invention;

fig. 16 is a flowchart of a method for transmitting a physical broadcast channel according to embodiment 4 of the present invention;

fig. 17 is a PBCH resource mapping scheme provided in embodiment 4 of the present invention;

fig. 18 is a flowchart of another physical broadcast channel transmission method according to embodiment 4 of the present invention;

fig. 19 is a block diagram of a base station according to embodiment 5 of the present invention;

fig. 20 is a block diagram of a ue according to embodiment 5 of the present invention;

fig. 21 is a diagram of a physical broadcast channel transmission system according to embodiment 5 of the present invention;

fig. 22 is a block diagram of another base station according to embodiment 5 of the present invention;

fig. 23 is a block diagram of another ue provided in embodiment 3 of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the prior art, PBCH data is subjected to scrambling, layer mapping, precoding, and other processing, and then resource mapping is performed, where the resource mapping mode is shown in fig. 1, because a transmission time interval of the existing PBCH is 40ms, that is, one transmission cycle includes 4 radio frames, in a time domain, a base station averagely divides the PBCH data into 4 data segments, which are a1 st PBCH data segment a, a2 nd PBCH data segment B, a3 rd PBCH data segment C, and a4 th PBCH data segment D, respectively, and the 4 data segments occupy frequency domain lengths of 6 PRBs in a carrier center in a frequency domain, where the carrier center refers to a center frequency point position of a carrier, and a specific mapping mode of the 4 data segments in the frequency domain is: the mapping starts from the frequency point position of the carrier center to the positions on both sides of the carrier center, for example, 6 PRBs in the embodiment of the present invention, and 3 PRBs are mapped upward and 3 PRBs are mapped downward from the frequency point position of the carrier center during the mapping. When resource mapping is carried out, the 4 data segments are sequentially mapped according to the sequence of a frequency domain and a time domain, and the resource position occupied by the cell reference signal is avoided, wherein the cell reference signal comprises: CRS (Cell Reference Signal), PSS (Primary Synchronization Signal), and SSS (Secondary Synchronization Signal).

The base station maps the 1 st PBCH data segment a to the first 4 OFDM symbols of slot 1 of subframe 0 of the 1 st radio frame 10, maps the 2 nd PBCH data segment B to the first 4 OFDM symbols of slot 1 of subframe 0 of the 2 nd radio frame 20, maps the 3 rd PBCH data segment C to the first 4 OFDM symbols of slot 1 of subframe 0 of the 3 rd radio frame 30, and maps the 4 th PBCH data segment D to the first 4 OFDM symbols of slot 1 of subframe 0 of the 4 th radio frame 40.

It should be noted that fig. 1 takes the resource mapping manner of the region N in which the frequency domain of the subframe No. 0 in the 1 st radio frame is 1 PRB frequency domain length, and the time domain is 1 subframe as an example, where the region N includes 2 PRBs, and the base station maps the PBCH data segment a1 to the first 4 OFDM symbols 1011a of the slot No. 1 1011 of the subframe No. 0 in the 1 st radio frame 10, and similarly, the resource mapping manner of the PBCH data segment B2, the PBCH data segment C3, and the PBCH data segment D4 in the corresponding region is the same as the resource mapping manner of the PBCH data segment a1 in the region N, and details are not repeated here.

Specifically, the straight line a represents the carrier center, the vertically striped region in the region N represents PBCH data segments mapped on PBCH, the black region represents CRS in the subframe 101 No. 0 structure, the first row of diagonally striped regions represents PSS, and the second row of diagonally striped regions represents SSS.

It should be noted that, in the embodiment of the present invention, a normal CP is added before the OFDM symbol, that is, a slot of a subframe of a corresponding radio frame includes 7 OFDM symbols.

Example 1:

an embodiment of the present invention provides a method for transmitting a physical broadcast channel, which relates to a base station side, and as shown in fig. 2, the method includes:

201. the base station divides PBCH data into n PBCH data segments, wherein n is 2^xAnd x is an integer greater than or equal to 0.

202. And the base station repeatedly maps the mth PBCH data segment on a preset resource position in a preset PBCH at least for 2 times, wherein m is more than or equal to 1 and less than or equal to n.

The preset PBCH is provided with 2^yAnd a wireless frame, wherein y is more than or equal to x. The structure of the preset PBCH provided by the embodiment of the present invention may be the same as that of the prior art, that is, the preset PBCH includes 4 radio frames, and y is 2; it may also differ from the prior art, e.g. the PBCH is preset to include 8 radiosFrame, y is 3.

In the prior art, a base station directly maps an mth PBCH data segment on the first 4 OFDM symbols of a1 st slot of a 0 th subframe of an mth radio frame in a preset PBCH, and in the embodiment of the invention, the base station repeatedly maps the mth PBCH data segment on a preset resource position in the preset PBCH at least 2 times.

When x is equal to y, that is, the number of PBCH data segments into which PBCH data is divided is equal to the number of radio frames of the predetermined PBCH, the base station may repeatedly map the mth PBCH data segment on the predetermined resource location of the mth radio frame in the predetermined PBCH for at least 2 times. Specifically, the base station may map the mth PBCH data segment on preset OFDM symbols of any two or more subframes from 0 th subframe to 9 th subframe in the mth radio frame in the preset PBCH, and particularly, the base station may map the mth PBCH data segment on preset OFDM symbols of each subframe from 0 th subframe to 9 th subframe in the mth radio frame in the preset PBCH, that is, the PBCH data segment and the radio frame in the preset PBCH have a corresponding relationship. For example, assume that x is 2, i.e., the PBCH includes 4 radio frames and the PBCH data is divided into 4 PBCH data segments. As shown in fig. 3, the preset OFDM symbol may be the first 4 OFDM symbols of slot No. 1 of subframe No. 0 in each radio frame in the preset PBCH. As shown in fig. 4, the preset OFDM symbols may also be the last 2 OFDM symbols of the slot 0 and the first 2 OFDM symbols of the slot 1 of the subframe 0 in each radio frame in the preset PBCH. Specifically, fig. 3 and fig. 4 both take the frequency domain of 1 PRB in the subframe No. 0 in the 1 st radio frame as an example, and the resource mapping manner of the region N of 1 subframe in the time domain is taken as an example, where the region N includes 2 PRBs, for example, in fig. 3, the base station repeatedly maps the 1 st PBCH data segment a to the first 4 OFDM symbols 1011a of the 1 st slot 1011 of the subframe No. 0 in the 1 st radio frame 10, and similarly, the resource mapping manner of the 2 nd PBCH data segment B, the 3 rd PBCH data segment C, and the 4 th PBCH data segment D in the corresponding regions is the same as the resource mapping manner of the 1 st PBCH data segment a in the region N, and details are not repeated here.

In fig. 4, for example, the base station repeatedly maps the 1 st PBCH data segment a to the last 2 OFDM symbols 1011a of the 0 th slot 1011 and the first 2 OFDM symbols 1012a of the 1 st slot 1012 of the 0 th subframe 101 of the 1 st radio frame 10, and similarly, the resource mapping manner of the 2 nd PBCH data segment B, the 3 rd PBCH data segment C, and the 4 th PBCH data segment D in the corresponding region is the same as the resource mapping manner of the 1 st PBCH data segment a in the region N, which is not described herein again.

It should be noted that the position of the predetermined OFDM symbol in each subframe from subframe 0 to subframe 9 in each radio frame in the predetermined PBCH may be different, and the position thereof is determined by the specific situation of the practical application, for example, the 1 st PBCH data segment may be mapped on the first 4 OFDM symbols of the 1 st slot of each subframe from subframe 0 to subframe 9 in the 1 st radio frame in the predetermined PBCH, and the 2 nd PBCH data segment may be mapped on the last 2 OFDM symbols of the 0 th slot and the first 2 OFDM symbols of the 1 st slot of each subframe from subframe 0 to subframe 9 in the 2 nd radio frame in the predetermined PBCH. In particular, in practical applications, the first 4 OFDM symbols of timeslot 0 of each subframe of the PBCH may be occupied by signals of other non-PBCH data, such as PDCCH (Physical Downlink Control Channel), so that the predetermined resource location may not include the first 4 OFDM symbols of timeslot 0 of each subframe, but when the first 4 OFDM symbols of timeslot 0 of each subframe of the PBCH are not occupied by signals of other non-PBCH data, the predetermined resource location may also include the first 4 OFDM symbols of timeslot 0 of each subframe of the PBCH, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the disclosure, so that the disclosure will not be described in detail herein.

In particular, the position of the predetermined OFDM symbol may be set as close to the CRS as possible, so as to facilitate the demodulation of PBCH data, which is to identify the transmitted data segment in a noisy channel.

Further, each PBCH data segment may also be repeatedly mapped in a subframe of the same radio frame, that is, the mth PBCH data segment may be repeatedly mapped at least 2 times on the preset OFDM symbol of each subframe in the 0 th to 9 th subframes in the mth radio frame in the preset PBCH. Therefore, the mapping times of the PBCH data segments can be further improved, and correspondingly, the intensity of the PBCH signal received by the user equipment is enhanced, so that the communication quality is improved. Let x be 2, i.e., the PBCH is preset to include 4 radio frames and the PBCH data is divided into 4 PBCH data segments. As shown in fig. 5, in the embodiment of the present invention, taking the 3 rd PBCH data segment as an example, that is, m is 3, the base station may map the 3 rd PBCH data segment C on the preset OFDM symbol 5011a of each subframe in the 3 rd radio frame 30 in the preset PBCH for the 1 st time, where the preset OFDM symbol 5011a is the first 4 OFDM symbols of the 1 st slot of each subframe, and repeatedly map the 3 rd PBCH data segment C on the preset OFDM symbol 5011b of each subframe in the 3 rd radio frame 30 in the 0 th to 9 th subframes of the preset PBCH for the 2 nd time, where the preset OFDM symbol 5011b is the last 3 OFDM symbols of the 0 th slot and the 5 th OFDM symbol of the 1 st slot of each subframe.

As shown in fig. 6, the embodiment of the present invention still takes the PBCH data segment 3 as an example, that is, m is 3, the base station may map the PBCH data segment 3C on the preset OFDM symbol 6011a of each subframe in the subframes No. 0 to No. 9 in the radio frame 3 in the preset PBCH for the 1 st time, where the preset OFDM symbol 6011a is the last 2 OFDM symbols of the timeslot No. 0 and the first 2 OFDM symbols of the timeslot No. 1 of each subframe, and repeatedly map the PBCH data segment 3C on the preset OFDM symbol 6011b of each subframe in the subframes No. 0 to No. 9 in the radio frame 3 in the preset PBCH for the 2 nd time, where the preset OFDM symbol 6011b is the 5 th OFDM symbol of the timeslot No. 0 and the 3 th to 5 OFDM symbols of the timeslot No. 1 of each subframe. Specifically, fig. 5 and fig. 6 both take the resource mapping manner of the region N with 1 PRB frequency domain length in the frequency domain and 1 subframe in the time domain in the subframe No. 0 in the 3 rd radio frame as an example, where the region N includes 2 PRBs.

Further, when x is less than y, the number of data segments of PBCH is less than the number of radio frames in PBCH, and PBCH transmission is performedThe transmission method comprises the following steps: mapping the mth PBCH data segment on a preset resource position of the mth radio frame in a preset PBCH; and mapping the mth PBCH data segment on a preset resource position of a pth radio frame in the preset PBCH, wherein p is m +2x × t, t is an integer and is more than or equal to 1 and less than or equal to 2^y-x-1. I.e. the same data segment may be mapped in different radio frames.

For example, if PBCH data is divided into 4 PBCH data segments, i.e., x is 2, the predetermined PBCH includes 8 radio frames, i.e., y is 3. Mapping the mth PBCH data segment to a preset resource position of the mth radio frame in a preset PBCH; and mapping the mth PBCH data segment on a preset resource position of an m +4 th radio frame in the preset PBCH. That is, the mth PBCH data segment may be mapped to the predetermined resource location of the mth radio frame and the predetermined resource location of the (m + 4) th radio frame at the same time, so as to form at least 2 mappings.

In an embodiment of the present invention, the base station may define a longer period for mapping the PBCH data, that is, the number of radio frames in the predetermined PBCH is greater than 4, y > 3, and accordingly, the transmission time interval of the predetermined PBCH is (40 × 2y-x) ms, and if y is 3, the transmission time interval of the predetermined PBCH is 80ms, that is, one transmission cycle includes 8 radio frames, it should be noted that, if one transmission cycle of the predetermined PBCH includes 2 radio frames, that is, y is 2, and the transmission time interval of the PBCH is 40ms, that is, one transmission cycle includes 4 radio frames^yIn each radio Frame, the SFN (System Frame Number) contained in the MIB (Master Information Block) carried in the predetermined PBCH is higher than the SFN carried in the PBCH in the prior art (2)^yY) bits, and the redundant bits are y bits, and the redundant bits may be completely filled with known bits, such as all 0 s, or default to idle bits, and include downlink bandwidth indication information (3 bits), and may also include PHICH channel configuration information (3 bits) and idle bits. For example, if a transmission cycle of a predetermined PBCH includes 8 radio frames, an SFN (System Frame Number) included in an MIB (Master Information Block) carried by the predetermined PBCH is the PBCH in the prior artThe high (8-3) bits of the SFN carried in the medium frame, i.e. 5 bits, and the redundant bits are 3 bits, and the redundant bits may be all filled with known bits, such as all 0 s, or default to idle bits, and include downlink bandwidth indication information (3 bits), or may include PHICH channel configuration information (3 bits) and idle bits.

If the PBCH data is divided into 4 PBCH data segments, that is, x is 2, and the PBCH is preset to include 8 radio frames, that is, y is 3, this period is 2 times of the period of the PBCH data mapping manner in the prior art, as shown in fig. 7, the corresponding PBCH data segment is repeatedly sent on slot 1 of each subframe in subframes 0 to 9 in 8 radio frames, so that a new channel and a new resource location are defined for the user equipment that needs to be enhanced, and the user equipment receives the PBCH channel information according to the new resource mapping manner. The addition of predefined resource locations for transmitting PBCH data segments within each radio frame provides scheduling flexibility and resource utilization efficiency over the prior art.

As shown in fig. 7, the base station equally divides PBCH data into 4 data segments, which are respectively PBCH data segment a1, PBCH data segment B2, PBCH data segment C3 and PBCH data segment D4, the base station simultaneously maps PBCH data segment a1 onto the first 4 OFDM symbols of slot 1 of subframe 0 of the 1 st radio frame and the first 4 OFDM symbols of slot 1 of subframe 0 of the 5 th radio frame, PBCH data segment B2 onto the first 4 OFDM symbols of slot 1 of subframe 0 of the 2 nd radio frame and the first 4 OFDM symbols of slot 1 of subframe 0 of the 6 th radio frame, PBCH data segment C3 onto the first 4 OFDM symbols of slot 1 of subframe 0 of the 3 rd radio frame and the first 4 OFDM symbols of slot 1 of subframe 0 of the 7 th radio frame, mapping the 4 th PBCH data segment D to the first 4 OFDM symbols of the 1 st slot of the 0 th subframe of the 4 th radio frame and the first 4 OFDM symbols of the 1 st slot of the 0 th subframe of the 8 th radio frame, for example, in fig. 7, the base station maps the 1 st PBCH data segment a to the first 4 OFDM symbols 1011a of the 1 st slot 1011 of the 0 th subframe 101 of the 1 st radio frame 10, and similarly, the resource mapping manners of the 2 nd PBCH data segment B, the 3 rd PBCH data segment C, and the 4 th PBCH data segment D in the corresponding regions are the same as the resource mapping manner of the 1 st PBCH data segment a in the region N, and are not described herein again.

As shown in fig. 7, in this embodiment, the transmission time interval of the predetermined PBCH is 80ms, that is, one transmission cycle of the predetermined PBCH includes 8 radio frames, the rate matching is performed by mapping the number of available resources on predefined resources in consecutive 8 radio frames, and the rate matching is performed by comparing the number of transmitted symbols with the number of available resource units, so that the number of transmitted symbols matches the number of available resource units. For example, the number of available resource units is 10, and the number of transmitted symbols is 5, each symbol is transmitted twice to fill all available resources during mapping. If the number of available resources is 5, the number of symbols to be transmitted is 10, the symbols are mapped to the available resources every 1 symbol, which is equivalent to only transmitting 5 symbols, no 5 symbols are transmitted, the symbols are modulation symbols in PBCH data, the available resource unit is one OFDM symbol in the time domain, and a resource block corresponding to one subcarrier in the frequency domain, so that 8 data segments of PBCH are transmitted on the predefined resources within a period of 80ms, and the scrambling codes of data corresponding to each data segment are different. Each data segment may be self-decodable. That is, as long as the user equipment can detect a PBCH data segment with a certain probability, all original information bits carried on the PBCH can be obtained through the data segment, that is, as long as the user equipment detects a PBCH data segment, if the signal quality is good enough, all useful information can be obtained without receiving other PBCH data segments, so that the strength of the PBCH signal received by the user equipment is enhanced, and the communication quality is improved.

Specifically, the base station may map the mth PBCH data segment on the preset resource position of the mth radio frame in the preset PBCH for at least 2 times of repetition, and at the same time map the mth PBCH data segment on the preset resource position of the qth radio frame in the preset PBCH for at least 2 times of repetition, and specifically, the base station may map the mth PBCH data segment on the preset OFDM symbol of each subframe of subframes from 0 to 9 in the qth radio frame in the preset PBCH. The specific mapping manner of each PBCH data segment in the corresponding radio frame may refer to fig. 3 and 4, and this embodiment is not described in detail.

Further, each PBCH data segment may also be repeatedly mapped in a subframe of the same radio frame, that is, the mth PBCH data segment may be repeatedly mapped at least 2 times on a preset OFDM symbol of each subframe in the mth radio frame in the preset PBCH, and the mth PBCH data segment may be repeatedly mapped at least 2 times on a preset OFDM symbol of each subframe in the qth radio frame in the preset PBCH, the 1 st subframe to the 9 th subframe. The specific mapping manner of each PBCH data segment in the corresponding radio frame may refer to fig. 5 and 6, and this embodiment is not described in detail.

The embodiment of the invention provides a physical broadcast channel transmission method, which relates to a user equipment side and comprises the following steps:

repeating the receiving of the mth PBCH data segment at least 2 times at a preset resource position of the mth radio frame in a preset PBCH, wherein the preset PBCH is provided with 2^yA wireless frame; wherein the mth PBCH data segment is any one of n PBCH data segments into which PBCH data is divided, and n is 2^xWherein x is an integer greater than or equal to 0, m is greater than or equal to 1 and less than or equal to n, and y is greater than or equal to x.

In the prior art, the ue directly receives the mth PBCH data segment at the preset resource location of the mth radio frame in the preset PBCH, but in the embodiment of the present invention, the ue repeatedly receives the mth PBCH data segment at least 2 times at the preset resource location of the mth radio frame in the preset PBCH.

Since each radio frame includes 10 subframes from subframe 0 to subframe 9, when x is y, that is, the number of PBCH data segments into which PBCH data is divided is equal to the number of radio frames of a preset PBCH, the ue may repeat receiving the mth PBCH data segment at least 2 times at a preset resource location of the mth radio frame in the preset PBCH. Specifically, the ue may receive the mth PBCH data segment on a preset OFDM symbol of any two or more subframes from 0 th subframe to 9 th subframe in the mth radio frame in the preset PBCH, and particularly, the ue may receive the mth PBCH data segment on a preset OFDM symbol of each subframe from 0 th subframe to 9 th subframe in the mth radio frame in the preset PBCH, that is, the PBCH data segment received by the ue has a corresponding relationship with the radio frame in the preset PBCH. For example, assume that x is 2, i.e., the PBCH includes 4 radio frames and the PBCH data is divided into 4 PBCH data segments. As shown in fig. 3, the preset OFDM symbol may be the first 4 OFDM symbols of slot No. 1 of subframe No. 0 in each radio frame in the preset PBCH. As shown in fig. 4, the preset OFDM symbols may also be the last 2 OFDM symbols of the slot 0 and the first 2 OFDM symbols of the slot 1 of the subframe 0 in each radio frame in the preset PBCH. Specifically, fig. 3 and fig. 4 both take the resource mapping manner of the region N of the subframe No. 0 in the 1 st radio frame, which is 1 PRB frequency domain length in the frequency domain, and 1 subframe in the time domain, which includes 2 PRBs, as an example, in fig. 3, the user equipment receives the 1 st PBCH data segment a on the first 4 OFDM symbols 1011a of the 1 st slot 1011 of the subframe No. 0 in the 1 st radio frame 10, and similarly, the receiving manner of the 2 nd PBCH data segment B, the 3 rd PBCH data segment C, and the 4 th PBCH data segment D in the corresponding region by the user equipment is the same as the receiving manner of the 1 st PBCH data segment a in the region N, and is not repeated here.

As shown in fig. 4, the ue may receive the 1 st PBCH data segment a on the last 2 OFDM symbols 1011a of the 0 th slot 1011 and the first 2 OFDM symbols 1012a of the 1 st slot 1012 of the 0 th subframe 101 of the 1 st radio frame 10, and similarly, the receiving manners of the 2 nd PBCH data segment B, the 3 rd PBCH data segment C, and the 4 th PBCH data segment D in the corresponding regions are the same as the receiving manner of the 1 st PBCH data segment a in the region N, which is not described herein again.

It should be noted that the position of the preset OFDM symbol of each subframe in subframes No. 0 to No. 9 in each radio frame in the preset PBCH may be different, and the setting of the position is determined by the specific situation of the practical application, for example, the ue may receive the 1 st PBCH data segment on the first 4 OFDM symbols of the 1 st slot of each subframe in subframes No. 0 to No. 9 in the 1 st radio frame in the preset PBCH, and receive the 2 nd PBCH data segment on the last 2 OFDM symbols of the 0 th slot and the first 2 OFDM symbols of the 1 st slot of each subframe in subframes No. 0 to No. 9 in the 2 nd radio frame in the preset PBCH. Any person skilled in the art can easily conceive of changes or substitutions within the technical scope of the present disclosure, and therefore the present invention is not described in detail herein.

In particular, the position of the preset OFDM symbol may be set as close to the CRS as possible, which may be beneficial for demodulation of PBCH data.

Further, the ue may also repeat receiving each PBCH data segment in a subframe of the same radio frame, that is, repeat receiving the mth PBCH data segment at least 2 times on a preset OFDM symbol of each subframe in subframes 0 to 9 in the mth radio frame in the preset PBCH. Let x be 2, i.e., the PBCH is preset to include 4 radio frames and the PBCH data is divided into 4 PBCH data segments. As shown in fig. 5, in the embodiment of the present invention, taking the 3 rd PBCH data segment as an example, that is, m is 3, the ue may receive the 3 rd PBCH data segment C1 st time on the preset OFDM symbol 5011a of each subframe of subframes 0 to 9 in the 3 rd radio frame 30 in the preset PBCH, where the preset OFDM symbol 5011a is the first 4 OFDM symbols of the 1 st slot of each subframe, and repeatedly receive the 3 rd PBCH data segment C2 nd time on the preset OFDM symbol 5011b of each subframe of subframes 0 to 9 in the 3 rd radio frame 30 in the preset PBCH, where the preset OFDM symbol 5011b is the last 3 OFDM symbols of the 0 th slot and the 5 th OFDM symbol of the 1 st slot of each subframe.

As shown in fig. 6, the embodiment of the present invention still takes the PBCH data segment 3 as an example, that is, m is 3, the ue may receive the PBCH data segment 3 1 time on the preset OFDM symbol 6011a of each subframe in subframes 0 to 9 in the 3 rd radio frame 30 in the preset PBCH, where the preset OFDM symbol 6011a is the last 2 OFDM symbols of the slot 0 and the first 2 OFDM symbols of the slot 1 of each subframe, and repeatedly receive the PBCH data segment 3 2 time on the preset OFDM symbol 6011b of each subframe in subframes 0 to 9 in the 3 rd radio frame 30 in the preset PBCH, where the preset OFDM symbol 1b is the 5 th OFDM symbol 6015 of the slot 0 and the 3 th to 5 th OFDM symbols of the slot 1 of each subframe. Specifically, fig. 5 and fig. 6 both take the resource mapping manner of the region N with 1 PRB frequency domain length in the frequency domain and 1 subframe in the time domain in the subframe No. 0 in the 3 rd radio frame as an example, where the region N includes 2 PRBs.

Further, when x is less than y, the number of PBCH segments is less than the number of radio frames in a predetermined PBCH, and the PBCH transmission method includes: receiving the mth PBCH data segment at a preset resource position of an mth radio frame in the preset PBCH; receiving the mth PBCH data segment at a preset resource location of a pth radio frame in the preset PBCH, where p is m +2^xX t is an integer, t is more than or equal to 1 and less than or equal to 2^y-x-1. I.e. the same data segment may be received in different radio frames.

For example, if PBCH data is divided into 4 PBCH data segments, i.e., x is 2, the predetermined PBCH includes 8 radio frames, i.e., y is 3. Receiving an mth PBCH data segment at a preset resource position of an mth radio frame in a preset PBCH; receiving the mth PBCH data segment at a preset resource location of an m +4 th radio frame in the preset PBCH. That is, the ue may receive the mth PBCH data segment at the predetermined resource location of the mth radio frame and at the predetermined resource location of the (m + 4) th radio frame at the same time.

As shown in fig. 7, the base station equally divides PBCH data into 4 data segments, which are respectively a1 st PBCH data segment a, a2 nd PBCH data segment B, a3 rd PBCH data segment C, and a4 th PBCH data segment D, the user equipment simultaneously receives the 1 st PBCH data segment a on the first 4 OFDM symbols of the 1 st slot of the 0 th subframe of the 1 st radio frame and the first 4 OFDM symbols of the 1 st slot of the 0 th subframe of the 5 th radio frame, simultaneously receives the 2 nd PBCH data segment B on the first 4 OFDM symbols of the 1 st slot of the 0 th subframe of the 2 nd radio frame and the first 4 OFDM symbols of the 1 st slot of the 0 th subframe of the 6 th radio frame, simultaneously receives the 3 rd PBCH data segment C on the first 4 OFDM symbols of the 1 st slot of the 0 th subframe of the 3 rd radio frame and the first 4 OFDM symbols of the 1 st slot of the 0 th subframe of the 7 th radio frame, for example, in fig. 7, the user equipment receives the 1 st PBCH data segment a on the first 4 OFDM symbols of the 1 st slot of the 0 th subframe of the 1 st radio frame and the first 4 OFDM symbols of the 1 st slot of the 0 th subframe of the 8 th radio frame at the same time, and similarly, the receiving manners of the 2 nd PBCH data segment B, the 3 rd PBCH data segment C, and the 4 th PBCH data segment D in the corresponding regions are the same as the receiving manner of the 1 st PBCH data segment a in the region N, and are not described herein again.

Specifically, the ue may receive the mth PBCH data segment repeatedly at least 2 times at a preset resource location of an mth radio frame in a preset PBCH, and simultaneously receive the mth PBCH data segment repeatedly at least 2 times at a preset resource location of a qth radio frame in the preset PBCH, and specifically, the ue may receive the mth PBCH data segment at a preset OFDM symbol of each subframe of subframes 0 to 9 in the qth radio frame in the preset PBCH. The specific receiving manner of each PBCH data segment in the corresponding radio frame may refer to fig. 3 and 4, and this embodiment is not described in detail.

Further, the ue may also repeat receiving each PBCH data segment in a subframe of the same radio frame, that is, repeat receiving the mth PBCH data segment at least 2 times on a preset OFDM symbol of each subframe in subframes 0 to 9 in the mth radio frame in the preset PBCH, and repeat receiving the mth PBCH data segment at least 2 times on a preset OFDM symbol of each subframe in subframes 1 to 9 in the qth radio frame in the preset PBCH. The specific receiving manner of each PBCH data segment in the corresponding radio frame may refer to fig. 5 and 6, and this embodiment is not described in detail.

It should be noted that the physical broadcast channel transmission method of the base station and the physical broadcast channel transmission method of the user equipment provided in the embodiments of the present invention are in one-to-one correspondence, that is, the base station performs PBCH data resource mapping at a preset resource location in a preset PBCH, and the user equipment receives corresponding PBCH data at the preset resource location, and particularly, the user equipment may detect a transmitted PBCH data segment according to its own detection performance to determine the number of times of receiving the PBCH data segment.

For example, the present invention assumes that x is 2, i.e., the PBCH includes 4 radio frames and the PBCH data is divided into 4 PBCH data segments. An embodiment of the present invention further provides a method for transmitting a physical broadcast channel, as shown in fig. 8, including:

801. the base station divides the PBCH data into 4 PBCH data segments.

802. And the base station repeatedly maps the mth PBCH data segment on a preset resource position of the mth radio frame in a preset PBCH at least for 2 times, wherein m is more than or equal to 1 and less than or equal to 4.

Assuming that m is 1, 2,3,4, as shown in fig. 3, the base station repeatedly maps the 1 st PBCH data segment a, the 2 nd data segment B, the 3 rd data segment C, and the 4 th data segment D on a preset OFDM symbol of each subframe of subframes No. 0 to No. 9 in 4 radio frames in the preset PBCH. As shown in fig. 3, the preset OFDM symbol may be the first 4 OFDM symbols of slot No. 1 of subframe No. 0 in each radio frame in the preset PBCH. Similarly, the resource mapping manner of the PBCH data segment B2, the PBCH data segment C3, and the PBCH data segment D4 in the corresponding region is the same as the resource mapping manner of the PBCH data segment a1 in the region N, and details are not repeated here.

803. The ue receives the mth PBCH data segment repeatedly at least 2 times at a preset resource location of the mth radio frame in the preset PBCH.

Where m is 1, 2,3, and 4, respectively, as shown in fig. 3, the ue repeatedly receives the 1 st PBCH data segment a, the 2 nd data segment B, the 3 rd data segment C, and the 4 th data segment D on the preset OFDM symbol of each subframe in subframes No. 0 to No. 9 in 4 radio frames in the preset PBCH. As shown in fig. 3, the preset OFDM symbol may be the first 4 OFDM symbols of slot No. 1 of subframe No. 0 in each radio frame in the preset PBCH. Similarly, the receiving manner of the PBCH data segment B2, the PBCH data segment C3 and the PBCH data segment D4 in the corresponding region is the same as the receiving manner of the PBCH data segment a1 in the resource of the region N, and is not described herein again.

Specifically, when the ue receives PBCH data segments in the PBCH default, the SFN in the MIB needs to be demodulated to determine the frame number, the first 8 subframes in each radio frame of the PBCH default are determined by the SFN in the MIB, and then the demodulation of the last 2 subframes is performed. When the PBCH includes 4 radio frames, the MIB may be identified with 2 bits, and when the PBCH includes 8 radio frames, the MIB may be identified with 3 bits.

It should be noted that signal mapping positions of CRS, PSS, SSS, and the like in each radio frame in the PBCH preset in the embodiment of the present invention are set according to a common mapping position, and a part of the drawing provided in the embodiment of the present invention is not labeled, and is not described in detail herein.

Example 2:

an embodiment of the present invention provides a base station 90, as shown in fig. 9, including:

a segmenting unit 901 for dividing the PBCH data into n PBCH data segments, where n is 2^xAnd x is an integer greater than or equal to 0.

A first mapping unit 902, configured to repeatedly map the mth PBCH data segment to a preset resource location in a preset PBCH at least 2 times, where m is greater than or equal to 1 and is less than or equal to n, and the preset PBCH is provided with 2^yAnd y is more than or equal to x.

The first mapping unit 902 is further configured to map the mth PBCH data segment on a preset resource location of the mth radio frame in the preset PBCH for at least 2 repetitions.

The first mapping unit is further configured to:

and mapping the mth PBCH data segment on a preset resource position of the mth radio frame in the preset PBCH.

As shown in fig. 10, the base station 90 further includes:

a second mapping unit 903, configured to map the mth PBCH data segment to a preset orthogonal frequency division multiplexing, OFDM, symbol of each subframe in subframes No. 0 to No. 9 in an mth radio frame in the preset PBCH.

The second mapping unit 903 is further configured to repeatedly map the mth PBCH data segment on a preset OFDM symbol of each subframe of subframes No. 0 to 9 in the mth radio frame in the preset PBCH for at least 2 times.

In the prior art, a base station directly maps an mth PBCH data segment to the first 4 OFDM symbols of a slot 1 of a subframe 0 of an mth radio frame in a preset PBCH, and a first mapping unit repeatedly maps the mth PBCH data segment to a preset resource position in the preset PBCH for at least 2 times in the embodiment of the present invention.

An embodiment of the present invention provides a user equipment 100, as shown in fig. 11, including:

a first receiving unit 1001 configured to repeat receiving an mth PBCH data segment at least 2 times at a preset resource location in a preset PBCH, where the preset PBCH is set to 2^yA radio frame, wherein the mth PBCH data segment is any one of n PBCH data segments into which PBCH data is divided, and n is 2^xWherein x is an integer greater than or equal to 0, m is greater than or equal to 1 and less than or equal to n, and y is greater than or equal to x.

The first receiving unit 1001 is further configured to repeat receiving the mth PBCH data segment at least 2 times on a preset resource location of an mth radio frame in the preset PBCH.

The first receiving unit 1001 is further configured to:

receiving the mth PBCH data segment at a preset resource location of an mth radio frame in the preset PBCH.

As shown in fig. 12, the illustrated user equipment 100 further includes:

a second receiving unit 1002, configured to receive the mth PBCH data segment on a preset orthogonal frequency division multiplexing, OFDM, symbol of each of subframes 0 to 9 in an mth radio frame in the preset PBCH.

The second receiving unit 1002 is further configured to repeatedly receive the mth PBCH data segment at least 2 times on a preset OFDM symbol of each of subframes 0 to 9 in an mth radio frame in the preset PBCH.

In the prior art, the ue directly receives the mth PBCH data segment at the preset resource location of the mth radio frame in the preset PBCH, whereas in the embodiment of the present invention, the first receiving unit repeats receiving the mth PBCH data segment at least 2 times at the preset resource location of the mth radio frame in the preset PBCH.

Example 3:

an embodiment of the present invention provides a physical broadcast channel transmission system 200, as shown in fig. 13, including:

the base station 90 as described in any of the above.

The user equipment 100 as described in any of the above.

It should be noted that the user equipment in the system may also be ordinary user equipment. In particular, there may be at least two preset PBCHs in the physical broadcast channel transmission system, where the lengths of the at least two preset PBCHs may be different, and for example, there may be a preset PBCH with a length of 4 radio frames and a preset PBCH with a length of 8 radio frames in the system.

An embodiment of the present invention provides a base station 300, as shown in fig. 14, including:

a processor 3001 for dividing PBCH data into n PBCH data segments, n 2^xAnd x is an integer greater than or equal to 0.

The processor 3001 is further configured to repeatedly map the mth PBCH data segment at least 2 times on a preset resource location in a preset PBCH, where m is greater than or equal to 1 and less than or equal to n, and the preset PBCH is set with 2^yAnd y is more than or equal to x.

The processor 3001 is further configured to map the mth PBCH data segment on a preset resource location of an mth radio frame in the preset PBCH for at least 2 repetitions.

The processor 3001 is further configured to map the mth PBCH data segment on a preset orthogonal frequency division multiplexing, OFDM, symbol of each of subframes 0 to 9 in the mth radio frame in the preset PBCH.

The processor 3001 further repeatedly maps the mth PBCH data segment on a preset OFDM symbol of each subframe of subframes No. 0 to No. 9 in the mth radio frame in the preset PBCH at least 2 times.

The processor 3001 is further configured to map the mth PBCH data segment on a predetermined resource location of an mth radio frame in the predetermined PBCH.

In the prior art, a base station directly maps an mth PBCH data segment on the first 4 OFDM symbols of a1 st slot of a 0 th subframe of an mth radio frame in a preset PBCH, and a processor repeatedly maps the mth PBCH data segment on a preset resource position in the preset PBCH for at least 2 times in the embodiment of the invention.

An embodiment of the present invention provides a user equipment 400, as shown in fig. 15, including:

a receiver 4001 configured to repeat receiving an mth PBCH data segment at least 2 times at a preset resource location in a preset PBCH, the preset PBCH being set to 2^yAnd (4) a wireless frame.

The receiver 4001 is further configured to repeat receiving the mth PBCH data segment at least 2 times at a preset resource location of the mth radio frame in the preset PBCH.

The receiver 4001 is further configured to receive the mth PBCH data segment on a predetermined orthogonal frequency division multiplexing, OFDM, symbol of each of subframes 0 to 9 in an mth radio frame in the predetermined PBCH.

The receiver 4001 is further configured to repeatedly receive the mth PBCH data segment at least 2 times on a preset OFDM symbol of each of subframes 0 to 9 in an mth radio frame in the preset PBCH.

The receiver 4001 is further configured to receive the mth PBCH data segment at a predetermined resource location of the mth radio frame in the predetermined PBCH.

In the prior art, the ue directly receives the mth PBCH data segment at the preset resource location of the mth radio frame in the preset PBCH, whereas in the embodiment of the present invention, the receiver repeats receiving the mth PBCH data segment at least 2 times at the preset resource location of the mth radio frame in the preset PBCH.

Example 4:

an embodiment of the present invention provides a method for transmitting a physical broadcast channel, which relates to a base station side, and as shown in fig. 16, the method includes:

1601. the base station divides PBCH data into n PBCH data segments, wherein n is 2^xAnd x is an integer greater than 2.

1602. The mth PBCH data is segmented and mapped on a preset resource position in a preset PBCH, wherein m is more than or equal to 1 and less than or equal to n, and the preset PBCH is provided with 2^yAnd a radio frame, wherein y is x.

In the prior art, a base station divides PBCH data into 4 data segments, and directly maps the 4 PBCH data segments on the first 4 OFDM symbols of the 1 st time slot of the 0 th subframe of 4 radio frames in a preset PBCH.

When x is equal to y, that is, the number of PBCH data segments into which PBCH data is divided is equal to the number of radio frames of a preset PBCH, the base station maps the mth PBCH data segment on a preset resource position in the preset PBCH, and specifically, the base station may map the mth PBCH data segment on the first 4 OFDM symbols of slot 1 of subframe 0 of the mth radio frame in the preset PBCH. Assuming that x is 3, i.e., PBCH data is divided into 8 PBCH data segments, and the number of radio frames of the PBCH is preset to be 8, as shown in fig. 17, the base station may map the 1 st PBCH data segment a1 to the first 4 OFDM symbols of the 1 st slot of the 0 th subframe of the 1 st radio frame in the PBCH; mapping the 2 nd PBCH data segment a2 to the first 4 OFDM symbols of slot 1 of subframe 0 of the 2 nd radio frame in the preset PBCH; mapping the 3 rd PBCH data segment a3 to the first 4 OFDM symbols of the 1 st slot of the 0 th subframe of the 3 rd radio frame in the PBCH; mapping the 4 th PBCH data segment A4 to the first 4 OFDM symbols of the 1 st time slot of the 0 th subframe of the 4 th radio frame in a preset PBCH; mapping the 5 th PBCH data segment a5 to the first 4 OFDM symbols of slot 1 of subframe 0 of the 5 th radio frame in the predetermined PBCH; mapping the 6 th PBCH data segment a6 to the first 4 OFDM symbols of slot 1 of subframe 0 of the 6 th radio frame in the predetermined PBCH; mapping the 7 th PBCH data segment a7 to the first 4 OFDM symbols of slot 1 of subframe 0 of the 7 th radio frame in the predetermined PBCH; the 8 th PBCH data segment A8 is mapped onto the first 4 OFDM symbols of slot 1 of subframe 0 of the 8 th radio frame in the preset PBCH.

For example, in fig. 17, the base station maps the 1 st PBCH data segment a1 to the first 4 OFDM symbols 1011a of the 1 st slot 1011 of the 0 th subframe 101 of the 1 st radio frame 10, and similarly, the resource mapping manner of the 2 nd PBCH data segment a2, the 3 rd PBCH data segment A3, the 4 th PBCH data segment a4, the 5 th PBCH data segment a5, the 6 th PBCH data segment a6, the 7 th PBCH data segment a7, and the 8 th PBCH data segment A8 in the corresponding region is the same as the resource mapping manner of the 1 st PBCH data segment a1 in the region N, which is not repeated here.

It should be noted that the base station may also map the mth PBCH data segment to any OFDM symbol of the mth radio frame in the preset PBCH, and the mapping manner is the same as that in fig. 17, and is not described again.

In the resource mapping method shown in fig. 17 provided in the embodiment of the present invention, the base station maps the mth PBCH data segment to the first 4 OFDM symbols of the 1 st slot of the 0 th subframe of the mth radio frame in the predetermined PBCH, so that the lengths of the PBCH data segment and the mapping are increased, and thus, the accuracy of PBCH data demodulation is increased.

the user equipment receives the mth PBCH data segmentation at the preset resource position in the preset PBCH, wherein m is more than or equal to 1 and less than or equal to n, and the preset PBCH is provided with 2^yA radio frame, y ═ x; wherein the mth PBCH data segment is any one of n PBCH data segments into which PBCH data is divided, and n is 2^xThe x is an integer larger than 2, m is more than or equal to 1 and less than or equal to n, and y is x.

In the prior art, the user equipment directly receives 4 PBCH data segments on the first 4 OFDM symbols of the 1 st slot of the 0 th subframe of 4 radio frames in the preset PBCH.

For example, the present invention assumes that x is 3, i.e., the PBCH includes 8 radio frames and the PBCH data is divided into 8 PBCH data segments. An embodiment of the present invention further provides a method for transmitting a physical broadcast channel, as shown in fig. 18, including:

1801. the base station divides the PBCH data into 8 PBCH data segments.

1802. And the base station maps the mth PBCH data segment on a preset resource position of the mth radio frame in a preset PBCH, wherein m is more than or equal to 1 and less than or equal to 8.

Assuming that m is 1, 2,3,4,5,6,7,8 as also shown in fig. 17, the base station maps the 1 st PBCH data segment a1 to the first 4 OFDM symbols of slot 1 of subframe 0 of the 1 st radio frame in the preset PBCH; mapping the 2 nd PBCH data segment a2 to the first 4 OFDM symbols of slot 1 of subframe 0 of the 2 nd radio frame in the preset PBCH; mapping the 3 rd PBCH data segment a3 to the first 4 OFDM symbols of the 1 st slot of the 0 th subframe of the 3 rd radio frame in the PBCH; mapping the 4 th PBCH data segment A4 to the first 4 OFDM symbols of the 1 st time slot of the 0 th subframe of the 4 th radio frame in a preset PBCH; mapping the 5 th PBCH data segment a5 to the first 4 OFDM symbols of slot 1 of subframe 0 of the 5 th radio frame in the predetermined PBCH; mapping the 6 th PBCH data segment a6 to the first 4 OFDM symbols of slot 1 of subframe 0 of the 6 th radio frame in the predetermined PBCH; mapping the 7 th PBCH data segment a7 to the first 4 OFDM symbols of slot 1 of subframe 0 of the 7 th radio frame in the predetermined PBCH; the 8 th PBCH data segment A8 is mapped onto the first 4 OFDM symbols of slot 1 of subframe 0 of the 8 th radio frame in the preset PBCH.

1803. The UE receives the mth PBCH data segment at a preset resource position of the mth radio frame in a preset PBCH.

Where m is 1, 2,3,4,5,6,7,8 as shown in fig. 17, the ue may receive the mth PBCH data segment on the first 4 OFDM symbols of slot 1 of subframe 0 of the mth radio frame in the preset PBCH. Assuming that x is 3, i.e., PBCH data is divided into 8 PBCH data segments, and the number of radio frames of the PBCH is preset to be 8, as shown in fig. 17, the ue may receive the 1 st PBCH data segment a1 on the first 4 OFDM symbols of slot 1 of subframe 0 of the 1 st radio frame in the preset PBCH; receiving a2 nd PBCH data segment a2 on the first 4 OFDM symbols of slot 1 of subframe 0 of the 2 nd radio frame in the preset PBCH; receiving a3 rd PBCH data segment a3 on the first 4 OFDM symbols of slot 1 of subframe 0 of the 3 rd radio frame in a preset PBCH; receiving a4 th PBCH data segment a4 on the first 4 OFDM symbols of slot 1 of subframe 0 of the 4 th radio frame in a preset PBCH; receiving a5 th PBCH data segment a5 on the first 4 OFDM symbols of slot 1 of subframe 0 of the 5 th radio frame in the preset PBCH; receiving a6 th PBCH data segment a6 on the first 4 OFDM symbols of slot 1 of subframe 0 of the 6 th radio frame in the preset PBCH; receiving a7 th PBCH data segment a7 on the first 4 OFDM symbols of slot 1 of subframe 0 of the 7 th radio frame in the preset PBCH; the 8 th PBCH data segment A8 is received on the first 4 OFDM symbols of slot 1 of subframe 0 of the 8 th radio frame in the preset PBCH.

For example, in fig. 17, the user equipment receives the 1 st PBCH data segment a1 on the first 4 OFDM symbols 1011a of the 1 st slot 1011 of the 0 th subframe 101 of the 1 st radio frame 10, and similarly, the reception manners of the 2 nd PBCH data segment a2, the 3 rd PBCH data segment A3, the 4 th PBCH data segment a4, the 5 th PBCH data segment a5, the 6 th PBCH data segment a6, the 7 th PBCH data segment a7 and the 8 th PBCH data segment A8 in the corresponding regions are the same as the reception manners of the 1 st PBCH data segment a1 in the region N, which is not repeated herein.

In the resource mapping method shown in fig. 17 provided in the embodiment of the present invention, the base station maps the mth PBCH data segment to the first 4 OFDM symbols of the 1 st slot of the 0 th subframe of the mth radio frame in the preset PBCH, and the user equipment receives the mth PBCH data segment on the first 4 OFDM symbols of the 1 st slot of the 0 th subframe of the mth radio frame in the preset PBCH, so that the lengths of the PBCH data segment and the mapping are increased, and the probability of the PBCH signal received by the user equipment is increased, thereby improving the communication quality.

Example 5:

an embodiment of the present invention provides a base station 500, as shown in fig. 19, including:

a segmenting unit 5001 for dividing the PBCH data into n PBCH data segments, where n is 2^xWherein x is an integer greater than 2;

a first mapping unit 5002, configured to map the mth PBCH data segment to a preset resource location in a preset PBCH, where m is greater than or equal to 1 and is less than or equal to n, and the preset PBCH is set to 2^yAnd a radio frame, wherein y is x.

An embodiment of the present invention provides a user equipment 600, as shown in fig. 20, including:

a first receiving unit 6001, configured to receive an mth PBCH data segment at a preset resource location in a preset PBCH, where m is greater than or equal to 1 and is less than or equal to n, and the preset PBCH is set to 2^yA radio frame, y ═ x;

An embodiment of the present invention provides a physical broadcast channel transmission system 700, as shown in fig. 21, including:

the base station 500 as described in any of the above;

and user equipment 600 as described in any of the above.

An embodiment of the present invention provides a base station 800, as shown in fig. 22, including:

a processor 8001 for dividing PBCH data into n PBCH data segments, where n is 2^xAnd x is an integer greater than 2.

The processor 8001 is further configured to map an mth PBCH data segment to a preset resource location in a preset PBCH, where m is greater than or equal to 1 and less than or equal to n, and the preset PBCH is set to 2^yAnd a radio frame, wherein y is x.

An embodiment of the present invention provides a user equipment 900, as shown in fig. 23, including:

a receiver 9001 configured to receive an mth PBCH data segment at a preset resource location in a preset PBCH, where m is greater than or equal to 1 and is less than or equal to n, and the preset PBCH is set to 2^yAnd a radio frame, wherein y is x.

It can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, devices and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described device embodiments are merely illustrative, and for example, the division of the units is only one logical functional division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may be physically included alone, or two or more units may be integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A method for transmitting a Physical Broadcast Channel (PBCH), comprising:

dividing PBCH data into n PBCH data segments, n 2^xX is an integer greater than or equal to 0;

mapping the n PBCH data segments on preset resource positions in n continuous radio frames;

wherein the mth PBCH data segment of the n PBCH data segments is repeatedly mapped on at least two preset resource positions in the mth radio frame of the n radio frames, m is greater than or equal to 1 and less than or equal to n, and m is an integer.

2. The method of claim 1, x is 2.

3. A method for transmitting a Physical Broadcast Channel (PBCH), comprising:

receiving n PBCH data segments at preset resource positions in n consecutive radio frames, where n is 2^xX is an integer greater than or equal to 0;

wherein an mth PBCH data segment of the n PBCH data segments is repeatedly received in at least two preset resource positions in an mth radio frame of the n radio frames, m is greater than or equal to 1 and less than or equal to n, and m is an integer.

4. The method of claim 3, x is 2.

5. A base station, comprising:

a processor for dividing PBCH data into n PBCH data segments, n being 2^xX is an integer greater than or equal to 0;

the processing unit is further to: the n PBCH data segments are mapped on preset resource positions in n continuous radio frames;

6. The base station of claim 5, x is 2.

7. A user device, comprising:

a receiver for receiving n PBCH data segments at preset resource locations in consecutive n radio frames, where n is 2^xX is an integer greater than or equal to 0;

8. The user equipment of claim 7, x is 2.

9. A computer-readable storage medium characterized in that the computer-readable storage medium stores a program that causes a communication device to execute the method according to any one of claims 1 to 4.

10. An apparatus for physical broadcast channel, PBCH, transmission, the apparatus comprising at least one processor and at least one storage medium storing instructions that, when executed by the processor, cause the processor to perform the method of any of claims 1 to 4.