CN108347770B

CN108347770B - Coverage enhancement and acquisition method, device, base station and terminal for cell public signal

Info

Publication number: CN108347770B
Application number: CN201710055182.6A
Authority: CN
Inventors: 孙立新; 丁颖哲; 周明宇; 陈华敏; 王力; 云翔
Original assignee: Baicells Technologies Co Ltd
Current assignee: Baicells Technologies Co Ltd
Priority date: 2017-01-24
Filing date: 2017-01-24
Publication date: 2020-07-17
Anticipated expiration: 2037-01-24
Also published as: WO2018137541A1; CN108347770A

Abstract

The invention provides a coverage enhancement and acquisition method, a device, a base station and a terminal of a cell public signal, which are used for solving the problem of coverage enhancement of the cell public signal without specific measures in the prior art. The coverage enhancement method of the invention comprises the following steps: determining frequency domain resources and time domain resources of the enhanced cell public signals for coverage enhancement according to the preset coverage enhancement degree of the cell; repeatedly transmitting the enhanced cell common signal on the determined frequency domain resource and/or time domain resource. The embodiment of the invention realizes the coverage enhancement of the cell public signal by repeatedly transmitting the enhanced cell public signal on the frequency domain resource and/or the time domain resource, so that a user or a device in deep fading can search and access the current cell.

Description

Coverage enhancement and acquisition method, device, base station and terminal for cell public signal

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method, an apparatus, a base station, and a terminal for coverage enhancement and acquisition of a cell common signal.

Background

In order to fairly occupy the unlicensed band channel with other devices in the unlicensed band (e.g., WiFi devices) and avoid mutual interference between the devices in the unlicensed band, the MF physical layer introduces a listen-Before-Talk (L) Talk, L BT) mechanism of a carrier monitoring technique similar to WiFi, and stops transmitting signals when the base station or the terminal monitors that the unlicensed band channel is occupied, i.e., L BT fails, and transmits signals when the base station or the terminal monitors that the channel is idle, i.e., L BT succeeds.

In order to improve transmission efficiency of Downlink common Control signals of a base station under L BT mechanism, MF introduces a Discovery Reference Signal (DRS), DRS includes a Primary Downlink common Control Signal including MF Primary synchronization Signal (MF-PSS), MF secondary synchronization Signal (MF-SSS), Cell Reference Signal (CRS), MF Primary Information Block (Master Information Block multimedia, MIB-MF), and MF System Information Block (System Information Block multimedia, SIB-MF), DRS occupies 12 or 14 symbols (Symbol) in a Downlink subframe, MIB-MF is transmitted through a broadcast Channel MF-PBCH, SIB-MF is transmitted through a Physical Downlink Shared Channel (Physical Downlink Shared Channel, PDSCH), Downlink common Control Signal (DRS) is configured to transmit Downlink common Control signals (DRS) in Downlink subframe, Downlink common Control Signal (DRS) is configured to transmit Downlink common Control signals (DRS), Downlink common Control signals (DRS) are received through Downlink common Control Signal (PDCCH), Downlink Control Signal (DRS) is configured to transmit Downlink common Control signals in Downlink subframe, Downlink Control Signal (PDCCH).

Coverage enhancement is needed considering that some devices are applied to some specific geographical locations, and the channel fading of the geographical locations is large. For example, in a monitoring camera in a parking garage, a water meter, an electric meter, and the like installed in a basement, since the penetration loss is large, it is necessary to enlarge the signal quality or enhance the transmission distance, that is, to enhance the Coverage (CE). Therefore, there is a need for coverage enhancement of DRS so that users or devices in deep fading can search for and access MulteFire cells. Currently, there is no specific measure to solve the coverage enhancement problem of DRS for this problem.

Disclosure of Invention

The invention aims to provide a coverage enhancement and acquisition method, a device, a base station and a terminal of a cell public signal, which are used for solving the problem that no specific measure is provided in the prior art to enhance the coverage of the cell public signal.

In order to achieve the above object, an embodiment of the present invention provides a coverage enhancement method for a cell common signal, which is applied to a base station, and includes:

determining frequency domain resources and time domain resources of the enhanced cell public signals for coverage enhancement according to the preset coverage enhancement degree of the cell;

repeatedly transmitting the enhanced cell common signal on the determined frequency domain resource and/or time domain resource.

In order to achieve the above object, an embodiment of the present invention further provides a coverage enhancement apparatus for a cell common signal, which is applied to a base station, and includes:

the first determining module is used for determining the frequency domain resource and the time domain resource of the enhanced cell public signal for coverage enhancement according to the preset coverage enhancement degree of the cell;

and a transmission module, configured to repeatedly transmit the enhanced cell common signal on the determined frequency domain resource and/or time domain resource.

In order to achieve the above object, an embodiment of the present invention further provides a base station, including:

the first processor is used for determining frequency domain resources and time domain resources of the enhanced cell public signals for coverage enhancement according to the preset coverage enhancement degree of the cell;

a first transmitter, configured to repeatedly transmit the enhanced cell common signal on the determined frequency domain resource and/or time domain resource.

In order to achieve the above object, an embodiment of the present invention further provides a method for acquiring a cell common signal, which is applied to a terminal, and includes:

determining frequency domain resources for transmitting an enhanced cell common signal;

and acquiring the enhanced cell public signal repeatedly transmitted on the frequency domain resource by the base station.

In order to achieve the above object, an embodiment of the present invention further provides an apparatus for acquiring a cell common signal, which is applied to a terminal, and includes:

a second determining module, configured to determine a frequency domain resource for transmitting an enhanced cell common signal;

and the acquisition module is used for acquiring the enhanced cell public signal which is repeatedly transmitted on the frequency domain resource by the base station.

In order to achieve the above object, an embodiment of the present invention further provides a terminal, including:

a second processor for determining frequency domain resources for transmission of enhanced cell common signals;

and the receiver is used for acquiring the enhanced cell public signal repeatedly transmitted on the frequency domain resource by the base station.

The embodiment of the invention has the following beneficial effects:

according to the technical scheme of the embodiment of the invention, the frequency domain resource and the time domain resource of the coverage enhancement cell public signal are determined according to the preset coverage enhancement degree of the cell; repeatedly transmitting the enhanced cell common signal on the determined frequency domain resource and/or time domain resource. The embodiment of the invention realizes the coverage enhancement of the cell public signal by repeatedly transmitting the enhanced cell public signal on the frequency domain resource and/or the time domain resource, so that a user or a device in deep fading can search and access the current cell.

Drawings

Fig. 1 is a first flowchart of coverage enhancement of a cell common signal according to an embodiment of the present invention;

fig. 2 is a second flowchart of coverage enhancement of a cell common signal according to an embodiment of the present invention;

figure 3 is a first diagram of eMF-PBCH enhancement symbols according to an embodiment of the present invention;

figure 4 is a second diagram of eMF-PBCH enhancement symbols according to an embodiment of the present invention;

figure 5A is a third diagram of eMF-PBCH enhancement symbols in accordance with an embodiment of the present invention;

figure 5B is a fourth diagram of eMF-PBCH enhancement symbols in accordance with an embodiment of the present invention;

figure 6A is a schematic diagram of eMF-first resource mapping of PBCH according to an embodiment of the present invention;

figure 6B is a diagram illustrating a second resource mapping of eMF-PBCH in an embodiment of the invention;

figure 7 is a diagram illustrating a third resource mapping of eMF-PBCH in an embodiment of the present invention;

figure 8 is a diagram illustrating a fourth resource mapping of eMF-PBCH in an embodiment of the present invention;

figure 9 is a schematic diagram of a fifth resource mapping of eMF-PBCH in an embodiment of the invention;

figure 10 is a diagram illustrating a sixth resource mapping of eMF-PBCH in an embodiment of the present invention;

figure 11 is a diagram illustrating a seventh resource mapping of eMF-PBCH in an embodiment of the present invention;

figure 12 is an eighth resource mapping diagram of eMF-PBCH in an embodiment of the invention;

FIG. 13 is a diagram illustrating repeated transmission in the frequency domain according to an embodiment of the present invention;

FIG. 14 is a diagram illustrating repeated transmissions in the frequency and time domains in accordance with an embodiment of the present invention;

fig. 15 is a flowchart of a method for acquiring a cell common signal according to an embodiment of the present invention;

fig. 16 is a schematic structural diagram of a coverage enhancement apparatus for a cell common signal according to an embodiment of the present invention;

FIG. 17 is a diagram illustrating a base station according to an embodiment of the present invention;

fig. 18 is a schematic structural diagram of an apparatus for acquiring a cell common signal according to an embodiment of the present invention;

fig. 19 is a schematic structural diagram of a terminal in an embodiment of the present invention.

Detailed Description

In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings.

The embodiment of the invention provides a coverage enhancement and acquisition method of a cell public signal, a base station and a terminal, and solves the problem that no specific measure is provided in the prior art to improve the coverage of the cell public signal.

First embodiment

As shown in fig. 1, an embodiment of the present invention provides a coverage enhancement method for a cell common signal, which is applied to a base station, and includes:

step 101: and determining the frequency domain resource and the time domain resource of the enhanced cell public signal for coverage enhancement according to the preset coverage enhancement degree of the cell.

The discovery reference signals DRS in the MF network, such as MIB-MF, MF-PSS and MF-sss, are distinguished from MIB-MF under basic coverage, and long term evolution (L ong termevaluation, &lttttransition = L "&tttl &ltt/t &tttte)/MIB 14 TE-a system MIB (defined as MIB-L TE), the MIB-MF with coverage enhancement is defined as enhanced MIB-MF (enhanced MIB-MF, embb-MF), wherein the control information carried by the em-MF may be different from the control information carried by the em ib-MF, corresponding to the transmission channel carrying the em ib-MF being defined as eMF-PBCH (enhanced MF-PBCH), the ib-MF may be an extension of the contents of the MIB-MF, the contents of which need to be extended for the new version of the system MIB-MF, or the new version of the system MIB-MF may be decoded by a new version of PBCH — MF, which may be different from the old version of the system MIB-MF, the new version of the system MIB-MF, the system MIB-MF may be decoded by a new version of the user MIB-MF, which may be different from the old version of the system MIB-MF, the new version of the legacy system MIB, the new version of the system MIB-MF, the new version of the legacy system MIB may be decoded.

Similarly, the MF-PSS and MF-SSS after coverage enhancement are defined as enhanced MF-PSS (enhanced MF-PSS, eMF-PSS) and enhanced MF-SSS (enhanced MF-SSS, eMF-SSS). eMF-PSS is the same sequence as MF-PSS, and is transmitted by expanding MF-PSS to different time frequency resources, so as to realize coverage enhancement. Thus, eMF-PSS contains MF-PSS, which can also be decoded by users or devices with coverage enhancement. Correspondingly, the same design applies to eMF-SSS. eMF-PSS may also be a different sequence from MF-PSS, carrying additional information. Then, the user or device of the coverage enhancement cannot decode the MF-PSS. Correspondingly, the same design applies to eMF-SSS.

In an embodiment of the present invention, the basic tti of the system is defined as tti (transmission time interval). From the absolute value, the TTI may have different values in different frequency bands. For example, below 6GHz, TTI ═ 1 ms; at 6-30GHz, TTI ═ 0.5 ms; above 30GHz, TTI is 0.25 ms. Logically, a TTI may contain a certain number of symbols, e.g., 1 TTI contains 14 OFDM symbols, or 12 OFDM symbols. Alternatively, 1 TTI contains 6 or 7 OFDM symbols.

In addition, the basic transmission bandwidth of eMF-PBCH is defined as

eMF-PSS having a basic transmission bandwidth of

And eMF-SSS has a basic transmission bandwidth of

Here, each channel is independently decodable within a basic transmission bandwidth. In particular, the method comprises the following steps of,

and

expressed as the number of Resource Blocks (RBs) in the frequency domain, is a logical value, and each RB contains a certain number of subcarriers. The value of the logical value may vary in different frequency bands or in different applications. Since the values of the subcarrier spacing are different in different scenarios, such as different frequency bands, or different applications, the absolute bandwidths of eMF-PBCH, eMF-PSS, and eMF-SSS may vary with the scenarios. Compared with the MF-PBCH,

may be larger than 6 PRBs or equal to 6 PRBs.

When transmitting eMF-PBCH, the logical resources within the basic transmission bandwidth of eMF-PBCH may be mapped centrally on the frequency domain, i.e. the physical resources of eMF-PBCH are contiguous on the frequency domain. In another example, the logical resources within the eMF-PBCH basic transmission bandwidth are distributively mapped onto the frequency domain, i.e., the physical resources of the eMF-PBCH are discrete in the frequency domain. In one example, the logic resource of eMF-PBCH is at certain intervals

The physical resources are distributively mapped, where the interval is a number based on the size of the PRB.

Specifically, eMF-PBCH basic mapping unit is defined

eMF-PBCH resource within one basic transmission bandwidth

As a unit, map to

At different frequency domain positions, the distance between every two basic mapping units is

Here, the first and second liquid crystal display panels are,

is predefined, for example 3.

Based on system bandwidth, e.g.

OrThe cell ID may also be based on, for example,

further, a basic transmission bandwidth of eMF-PBCH may be located at a specific position of the system bandwidth, which is fixed or obtained based on a function, wherein the parameters of the function include cell ID, system frame number. In this case, eMF-PBCH transmission center frequency point and the deviation of the center frequency point of the communication system are defined as

The communication system may specifically refer to time division synchronous code division multiple access (TD-SCDMA), Worldwide Interoperability for Microwave Access (WiMAX), L TE/L TE-A, L AA, MulteFire, and the fifth generation, the sixth generation and the Nth generation mobile communication systems which may appear in the following.

One obtains

An example expression of (d) is:

here, the cell ID is a cell ID, which may be physical or logical;

is the system bandwidth, expressed as the number of RBs. Here, the first and second liquid crystal display panels are,

the value of (c) may be fixed, for example, fixed to 50PRB, at 15KHz subcarrier spacing, corresponding to 10MHz system bandwidth.

The value of (a) may be a specific bandwidth size of the system.

Based on the resource mapping manner and different frequency offsets, eMF-PBCH transmission in different frequency domain positions can be achieved. As described above

Specifically, the value may be a relative logical value, which is represented by the number of resource elements RE, or may be a relative logical value, which is represented by the number of physical resource blocks PRB. From the physical bandwidth, since the subcarrier spacing may have different sizes in different frequency bands or different application scenarios, the absolute bandwidth values occupied by one PRB may be different, and thus, the absolute bandwidth corresponding to the offset has different values.

Defining the deviation between the central frequency point of eMF-PSS transmission and the central frequency point of the system as

And eMF-center frequency point of SSS transmission and center frequency point of system have deviation of

In a similar manner, the first and second substrates are,

and

is defined and takes the value and

the same is true.

Define eMF-PBCH as the basic transmission time

eMF-PSS having a basic transmission time of

And eMF-SSS has a basic transmission time of

Here, the first and second liquid crystal display panels are,

and

expressed as the number of symbols in the time domain, indicates that each channel is independently decoded within the plurality of symbols. Since the frequency spectrum of the received signal is different in different scenarios, such as different frequency bands, or different applications,

and

the number of symbols involved varies, and its value is not fixed, and furthermore, the duration of one symbol varies, and therefore the absolute value of the basic transmission times of eMF-PBCH and eMF-PSS/eMF-SSS also varies, the eMF-PBCH may occupy {1, 2, 4, 5, 6} symbols compared to the 4-symbol PBCH of the L TE/L TE-a system and the 6-symbol MF-PBCH in the MF1.0 system.

In particular embodiments of the present invention, there may be enhancement of eIB-MF in MF systems without coverage enhancement of eMF-PSS and eMF-SSS. Coverage enhancement can also be performed on both MF-MIB and MF-PSS/SSS. Under different conditions, eMF-PBCH basic transmission time sizes are different, resource mapping is also different, and multiple groups of time-frequency resources are used for transmitting eMF-PBCH in order to realize coverage enhancement.

The coverage enhancement of the time-frequency resources may specifically be that eMF-PBCH occupies multiple groups of time-frequency resources for repetitive transmission, where the size of each group is the basic transmission bandwidth and the basic transmission time of eMF-PBCH, and the basic transmission bandwidth is the number of resource blocks occupied by eMF-PBCH in the frequency domain. The size of each group of resources in the time domain is specifically eMF-the basic transmission time of the PBCH.

The step is to determine the frequency domain resource and the time domain resource of the enhanced cell public signal so as to facilitate the subsequent repeated transmission of the enhanced cell public signal in the determined frequency domain resource and/or time domain resource, thereby realizing the coverage enhancement of the cell public signal. Specifically, the step 101

When the cell covered by the base station supports coverage enhancement, the frequency domain resource and the time domain resource can be determined according to the actual coverage enhancement degree (for example, supporting 3 times of coverage enhancement) of the cell, so as to save the time frequency resource. In such an instance, only users whose coverage enhancement is not greater than the actual capability of the cell may detect the cell.

In another example, the step 101 may specifically include: and determining the frequency domain resource and the time domain resource of the enhanced cell public signal for coverage enhancement according to the maximum coverage enhancement degree predefined by the cell.

Specifically, if the base station supports coverage enhancement, the base station does not support 3 times of coverage enhancement according to the actual coverage enhancement degree of the cell (e.g. currently), and according to the predefined maximum coverage enhancement degree (e.g. 6 times of coverage enhancement), so that all users with different coverage enhancement requirements can detect the cell and know the actual coverage enhancement capability of the cell.

Step 102: repeatedly transmitting the enhanced cell common signal on the determined frequency domain resource and/or time domain resource.

Specifically, if the frequency domain resource is the basic transmission bandwidth, the common signal of the enhanced cell is repeatedly transmitted on the time domain resource; if the frequency domain resources comprise multiple groups of resources and the bandwidth of each group of resources is the basic transmission bandwidth, the common signals of the enhanced cell are repeatedly transmitted on the frequency domain resources, or the common signals of the enhanced cell are repeatedly transmitted on the frequency domain resources and the time domain resources, so that coverage enhancement of the common signals of the enhanced cell is realized.

According to the coverage enhancement method of the cell public signal, the frequency domain resource and the time domain resource of the enhanced cell public signal for coverage enhancement are determined according to the preset coverage enhancement degree of the cell; repeatedly transmitting the enhanced cell common signal on the determined frequency domain resource and/or time domain resource. The embodiment of the invention realizes the coverage enhancement of the cell public signal by repeatedly transmitting the enhanced cell public signal on the frequency domain resource and/or the time domain resource, so that a user or a device in deep fading can search and access the current cell.

Second embodiment

As shown in fig. 2, an embodiment of the present invention further provides a coverage enhancement method for a cell common signal, which is applied to a base station, and includes:

step 201: and according to the preset coverage enhancement degree of the cell, carrying out resource mapping processing on the enhancement symbol corresponding to the enhancement cell public signal to obtain the time domain resource of the enhancement cell public signal.

Specifically, the symbols in each TTI are mapped to enhancement symbols that include CRS, and the symbols that do not include CRS in the TTI are mapped to enhancement symbols that do not include CRS.

In the embodiment of the present invention, assuming that the above-mentioned cell common signal is eMF-PBCH, for one basic integrity transmission,

is {1, 2, 4, 5, 6 }. As shown in fig. 3, one basic transmission of eMF-PBCH requires 6 symbols, i.e.

Wherein, cell reference signals CRSs are present on the first enhancement symbol 1, the second enhancement symbol 2, the fifth enhancement symbol 5 and the sixth enhancement symbol 6 of the eMF-PBCH, and CRSs are absent on the third enhancement symbol 3 and the fourth enhancement symbol 4.

In fig. 4, one basic transmission of eMF-PBCH requires 5 symbols, i.e. 5 symbols

Wherein, there is cell reference signal CRS on the first enhancement symbol 1, the second enhancement symbol 2 and the fifth enhancement symbol 5 of the eMF-PBCH, and there is no CRS on the third enhancement symbol 3 and the fourth enhancement symbol 4.

In FIG. 5In A, one basic transmission of eMF-PBCH requires 4 symbols, i.e.

In one example, there are cell reference signals CRS on the first and second

enhanced symbols

1 and 2 of the eMF-PBCH, and there are no CRS on the third and fourth

enhanced symbols

3 and 4. In fig. 5B, eMF-there is cell reference signal CRS on the first, second and

fourth enhancement symbols

1, 2 and 4 of the PBCH, and there is no CRS on enhancement symbol 3.

eMF-the enhanced symbols of the PBCH are mapped one-to-one to a corresponding number of symbols in one TTI, e.g., OFDM symbols. In the above, if eMF-PBCH symbol has CRS, it indicates that the symbol must be mapped to an OFDM symbol with CRS or mapped to an OFDM symbol without CRS. When mapping to an OFDM symbol without CRS, some resource elements are required for transmitting CRS, or some resource elements do not transmit any signal, i.e., coded CRS or empty in fig. 6A, 6B, 7, 8, 9, 10, 11, and 12. If there is no CRS on a certain eMF-PBCH symbol, it cannot be mapped to the OFDM symbol with CRS when performing resource mapping.

Specifically, step 201 includes mapping the symbols in each TTI to the enhanced symbols containing CRS, and mapping the symbols in the TTI not containing CRS to the enhanced symbols not containing CRS.

In addition, in the embodiment of the present invention, the basic transmission bandwidth of eMF-PBCH is proportional to the basic transmission time to maintain a specific coding efficiency. Assuming that the signaling overhead of the eIB-MF is 40bits, the coding efficiency of each independent decoding is equivalent to that of the MIB-MF (the independent coding efficiency is 40/(2688/4) ═ 0.06), and the basic transmission bandwidth of eMF-PBCH is eMF-PBCH

Respectively correspond to

Is {1, 2, 4, 5, 6 }. Assume that the signaling overhead of eIB-MF is40bits, the coding efficiency of each independent decoding is equivalent to MIB-L TE (the independent coding efficiency is 40/(1920/4) ═ 0.08), and correspondingly, the basic transmission bandwidth of eMF-PBCH is obtained

Based on FIG. 3, FIG. 4, FIG. 5A and FIG. 5B, the following description is made

Or

Is provided with

In addition, when

Is provided with

Or

When in use

Is provided with

Or

In another mode, when

Or

Is provided with

Here, it is assumed that

Note that if the OFDM symbol included in one TTI is not an integer multiple of eMF-PBCH basic transmission time, part of the eMF-PBCH symbols cannot be transmitted, the network only transmits part of the eMF-PBCH symbols based on puncturing (puncturing), where puncturing is defined as the eNB encoding eMF-MIB at a fixed code rate, and when an unavailable resource is encountered in the resource mapping process, the corresponding eMF-PBCH modulation symbols need to be punctured and not transmitted.

The following describes a specific implementation scheme of resource mapping in the embodiment of the present invention with reference to the drawings.

Implementation mode one

As shown in fig. 6A, 6B and 7, the enhanced cell common signal is an enhanced MF physical broadcast channel eMF-PBCH, and the eMF-PBCH corresponds to 5 enhanced symbols, and CRSs are included in a first enhanced symbol, a second enhanced symbol and a fifth enhanced symbol of the 5 enhanced symbols; and

the method for mapping the symbols containing CRS or the symbols not containing CRS in each transmission time interval TTI to the enhancement symbols containing CRS, and mapping the symbols not containing CRS in the TTI to the enhancement symbols not containing CRS comprises the following steps:

if each TTI contains 12 symbols (TTI is normally 14 symbols in length, the last two symbols are not available), and there are primary synchronization signal PSS, secondary synchronization signal SSS, MF-PSS, MF-SSS, and MF-PBCH within the TTI, the eMF-PBCH first enhancement symbol is mapped in the third and eighth symbol in each TTI, mapping a second enhancement symbol of the eMF-PBCH in a fourth symbol and a ninth symbol in each of the TTIs, mapping the eMF-third enhancement symbol of PBCH in the sixth symbol and the tenth symbol in each TTI, mapping a fourth enhancement symbol of the eMF-PBCH in a seventh symbol and an eleventh symbol in each of the TTIs, mapping a fifth enhancement symbol of the eMF-PBCH in a fifth symbol and a twelfth symbol in each of the TTIs.

The above implementation is also applicable to a TTI containing 14 symbols, and 14 symbols are all available. In this case, the last two symbols may not be signaled, or only two of the symbols of eMF-PBCH may be transmitted.

The first implementation applies to the case where eMF-PSS/SSS is absent or eMF-PSS/SSS is present and eMF-PSS/SSS is orthogonal to eMF-PBCH. The normal length of a TTI is 14 symbols, but in some cases, a TTI contains only 12 symbols, i.e., the TTI is an abnormal TTI. An example of resource mapping of eMF-PBCH is shown in FIG. 6A when there is PSS/SSS, MF-PSS/SSS, MF-PBCH (located at the center 6 PRBs), or PSS/SSS (located at the center 6 PRBs), or no PSS/SSS, MF-PSS/SSS, MF-PBCH, MF-SIB in the TTI. In figure 6A, eMF-PBCH is located apart from the center frequency bin

The basic transmission time in the time domain is 5 symbols, and the basic transmission bandwidth in the frequency domain is 6 PRBs. In fig. 6A, eMF-PBCH transmissions are located only on one side of the center frequency bin of the system. R0 and R1 denote repetition transmission 0 and repetition transmission 1 of eMF-PBCH, respectively, where eMF-PBCH may be repeated twice within one TTI.

It should be noted that the mapping scheme shown in fig. 6A is applicable to the case where PSS/SSS, MF-PSS/SSS, and MF-PBCH exist in a TTI, and the length of the control region (PDCCH) is not greater than 2 symbols.

Based on similar design, fig. 6B shows eMF-PBCH resource mapping when the TTI normal length is 12 symbols (extended CP). Mapping a first enhancement symbol of the eMF-PBCH in a third symbol and a seventh symbol of each TTI, mapping a second enhancement symbol of the eMF-PBCH in a fourth symbol and an eighth symbol of each TTI, mapping a third enhancement symbol of the eMF-PBCH in a fifth symbol and a ninth symbol of each TTI, mapping a fourth enhancement symbol of the eMF-PBCH in a sixth symbol and an eleventh symbol of each TTI, and mapping a fifth enhancement symbol of the eMF-PBCH in a tenth symbol and a twelfth symbol of each TTI.

Another resource mapping scheme of the first implementation is shown in FIG. 7, where there are PSS/SSS, MF-PSS/SSS and MF-PBCH in TTI. In figure 7, eMF-PBCH is located at a distance from the system center frequency point

The basic transmission time in the time domain is 5 symbols, and the basic transmission bandwidth in the frequency domain is 6 PRBs. Resources of the basic transmission bandwidth are divided into two parts with intervals

And mapping to the frequency domain. That is, in fig. 7, eMF-PBCH transmissions are located on both sides of the center frequency bin of the system. R0 and R1 denote repetition transmission 0 and repetition transmission 1 of eMF-PBCH, respectively, where eMF-PBCH may be transmitted repeatedly twice in one TTI.

It should be noted that, in the resource mapping scheme shown in fig. 7, since there is transmission of signals such as MF-PSS/SSS, the length of the control region cannot be greater than 2 symbols.

Implementation mode two

As shown in fig. 8, the enhanced cell common signal is an enhanced MF physical broadcast channel eMF-PBCH, and the eMF-PBCH corresponds to 5 enhanced symbols, and CRSs are included in a first enhanced symbol, a second enhanced symbol, and a fifth enhanced symbol of the 5 enhanced symbols; and

if each TTI contains 14 symbols and there are PSS and SSS (PSS/SSS transmitted on #5 and # 6) within the TTI, there are no MF-PSS, MF-SSS and MF-PBCH, the eMF-PBCH first enhancement symbol is mapped in the third and eighth symbol in each TTI, mapping a second enhancement symbol of the eMF-PBCH in a fourth symbol and a ninth symbol in each of the TTIs, mapping a third enhancement symbol of the eMF-PBCH in a tenth symbol and a thirteenth symbol in each of the TTIs, mapping a fourth enhancement symbol of the eMF-PBCH in an eleventh symbol and a fourteenth symbol in each of the TTIs, mapping a fifth enhancement symbol of the eMF-PBCH in a fifth symbol and a twelfth symbol in each of the TTIs.

The resource mapping scheme corresponding to the second implementation is applicable to the case that eMF-PSS/SSS does not exist or eMF-PSS/SSS exists and the frequency domain resources of eMF-PSS/SSS are orthogonal to the frequency domain resources of eMF-PBCH. eMF-PBCH may contain a central or non-central 6 PRBs, or contain a portion of a central or non-central 6 PRBs, or contain no central or non-central 6 PRBs. Here, the control region length is not more than 2.

In addition, in the first implementation and the second implementation, the time length of the control region cannot be greater than 2 symbols, and when the time length of the control region is greater than 2 symbols, the eNB needs to puncture eMF-PBCH. When doing the punture, the user always defaults to the eNB skipping the resources for common control information, e.g., the physical control format indicator channel PCFICH, the common pdcch (cpccch), and the common control information of the scheduling SI. When skipping the cpcpdcch and scheduling the common control information of the SI, the eNB may skip only the time-frequency resource corresponding to the aggregation level 4, may skip only the time-frequency resource corresponding to the aggregation level 8, and may skip all the time-frequency resources corresponding to the aggregation levels 4 and 8 in the eNB.

In this case, the step 201 may specifically include: and performing puncturing and puncturing processing on the enhanced symbols, and performing resource mapping processing on the enhanced symbols after the puncturing processing to obtain the time domain resources of the enhanced cell public signals.

Furthermore, if eMF-PBCH and partial CSI-RS collide, the eNB should proceed eMF-PBCH. Wherein the eMF-PBCH occupies frequency spectrum resources which can not be used for the transmission of other data.

Implementation mode three

As shown in fig. 9, the enhanced cell common signal is an enhanced MF physical broadcast channel eMF-PBCH, and the eMF-PBCH corresponds to 6 enhanced symbols, and CRS is included in a first enhanced symbol, a second enhanced symbol, a fifth enhanced symbol, and a sixth enhanced symbol of the 6 enhanced symbols; and

if each TTI contains 12 symbols and there are PSS, SSS, MF-PSS, MF-SSS and MF-PBCH in the TTI, the eMF-PBCH first enhancement symbol is mapped in the first and eighth symbol in each TTI, mapping a second enhancement symbol of the eMF-PBCH in a second symbol and a ninth symbol in each of the TTIs, mapping the eMF-third enhancement symbol of PBCH in the third symbol and the tenth symbol in each TTI, mapping a fourth enhancement symbol of the eMF-PBCH in a fourth symbol and an eleventh symbol in each of the TTIs, mapping a fifth enhancement symbol of the eMF-PBCH in a seventh symbol and a twelfth symbol in each of the TTIs, mapping a sixth enhancement symbol of the eMF-PBCH in a fifth symbol and a seventh symbol in each of the TTIs.

In the third implementation mode, eMF-PBCH is located at a position separated from the central frequency point

The basic transmission time in the time domain is 6 symbols, and the basic transmission bandwidth in the frequency domain is 6 PRBs. R0 and R1 denote repetition transmission 0 and repetition transmission 1 of eMF-PBCH, respectively. When R1 repeats transmission, eMF-PBCH symbol 1 and symbol 2 are mapped to the control region, and here, it is considered that the length of the control region is always set to 2. Since the control region has common control signals, such as PCFICH, cpccch, and common scheduling signaling for scheduling common broadcast data, it is considered that the eNB is always a downlink eMF-PBCH, so as not to affect the decoding of the common control signals by the old or new users. Therefore, the eMF-PBCH repetition number within one TTI may not be an integer.

In the third implementation mode, eMF-PBCH is located at two sides of the center of the system, of course, eMF-PBCH may be located at only one side of the center of the system, as shown in FIG. 7. Furthermore, this implementation is applicable to the presence of PSS/SSS, MF-PSS/SSS, MF-PBCH (at the center 6 PRBs) or to the absence of PSS/SSS, MF-PSS/SSS, MF-PBCH (at the center 6 PRBs) or to the presence of PSS/SSS only (at the center 6 PRBs) for the current TTI. This third implementation applies to the presence of eMF-PSS/SSS in the system, and the spectrum resources of eMF-PSS/SSS and eMF-PBCH are orthogonal.

Implementation mode four

As shown in fig. 10, the enhanced cell common signal is an enhanced MF physical broadcast channel eMF-PBCH, and the eMF-PBCH corresponds to 6 enhanced symbols, and CRS is included in a first enhanced symbol, a second enhanced symbol, a fifth enhanced symbol, and a sixth enhanced symbol of the 6 enhanced symbols; and

if each TTI contains 14 symbols and there are no PSS, SSS, MF-PSS, MF-SSS and MF-PBCH in the TTI, the eMF-PBCH first enhancement symbol is mapped in the third and eighth symbol in each TTI, mapping a second enhancement symbol of the eMF-PBCH in a fourth symbol and a ninth symbol in each of the TTIs, mapping the eMF-third enhancement symbol of PBCH in the sixth symbol and the tenth symbol in each TTI, mapping a fourth enhancement symbol of the eMF-PBCH in a seventh symbol and an eleventh symbol in each of the TTIs, mapping a fifth enhancement symbol of the eMF-PBCH in a fifth symbol and a twelfth symbol in each of the TTIs, mapping a sixth enhancement symbol of the eMF-PBCH in a thirteenth symbol and a fourteenth symbol in each of the TTIs.

When system center 6PRB does not transmit MF-PSS/SSS, MF-PBCH, and PSS/SSS, eMF-PBCH may occupy 6PRB, or a portion of 6PRB, in system center, and eNB cannot schedule other data for transmission in the resource occupied by eMF-PBCH. eMF-PBCH may be on one side of the center frequency point of the system, or on both sides.

In addition, if the TTI length is changed from 14 to 12 symbols at a specific time, for example, in a DRS subframe of the MF system, the eNB does not transmit eMF-the last two symbols of the PBCH, i.e., performs the puncuture processing. The fourth implementation described above applies to the case where eMF-PSS/SSS is absent or eMF-PSS/SSS is present and eMF-PSS/SSS is orthogonal to eMF-PBCH.

Implementation mode five

As shown in fig. 11, the enhanced cell common signal is an enhanced MF physical broadcast channel eMF-PBCH, and the eMF-PBCH corresponds to 5 enhanced symbols, and CRSs are included in a first enhanced symbol, a second enhanced symbol, and a fifth enhanced symbol of the 5 enhanced symbols; and

if each TTI includes 14 symbols and there are enhanced MF-SSS for the sixth and seventh symbols and enhanced MF-PSS for the seventh symbol in the TTI, then the first enhanced symbol of the eMF-PBCH is mapped in the third and eighth symbols in each TTI, the second enhanced symbol of the eMF-PBCH is mapped in the fourth and ninth symbols in each TTI, the third enhanced symbol of the eMF-PBCH is mapped in the tenth and thirteenth symbols in each TTI, the fourth enhanced symbol of the eMF-PBCH is mapped in the eleventh and fourteenth symbols in each TTI, and the fifth enhanced symbol of the eMF-PBCH is mapped in the fifth and twelfth symbols in each TTI.

The fifth implementation mode is applicable to the situation that eMF-PSS/SSS exists in TTI.

Implementation mode six

As shown in fig. 12, the enhanced cell common signal is an enhanced MF physical broadcast channel eMF-PBCH, and the eMF-PBCH corresponds to 4 enhanced symbols, and CRS is included in a first enhanced symbol, a second enhanced symbol, and a fourth enhanced symbol of the 4 symbols; and

if each TTI contains 12 symbols and there are enhanced MF-SSS for the sixth and seventh symbols and enhanced MF-PSS for the seventh symbol, then the first enhanced symbol of eMF-PBCH is mapped in the eighth and twelfth symbols of each TTI, the second enhanced symbol of eMF-PBCH is mapped in the fifth and ninth symbols of each TTI, the third enhanced symbol of eMF-PBCH is mapped in the third and tenth symbols of each TTI, and the fourth enhanced symbol of eMF-PBCH is mapped in the fourth and eleventh symbols of each TTI.

In the sixth implementation, the method is applicable to the situation that eMF-PSS/SSS exists in TTI.

Step 202: and determining the frequency domain resource of the enhanced cell public signal according to the basic transmission bandwidth of the enhanced cell public signal, wherein the basic transmission bandwidth is the number of resource blocks occupied by the enhanced cell public signal in the frequency domain.

Specifically, multiple sets of resources are selected in the frequency domain as frequency domain resources of the enhanced cell common signal, wherein the bandwidth of each set of resources is equal to the basic transmission bandwidth, and the multiple sets of resources are discrete or continuous in the frequency domain. At this time, in one TTI, a user of coverage enhancement may detect system information or achieve synchronization, and coverage enhancement of the embb-MF is through repeated transmission in the frequency domain.

Further, according to the deviation between the center frequency point of the enhanced cell public signal transmission and the center frequency point of the communication system, the center frequency point of the first group of resources is determined, and according to the center frequency point of the first group of resources and a preset frequency hopping interval, the frequency domain positions of other groups of resources except the first group of resources in the multiple groups of resources are obtained.

As shown in fig. 13, each block of resource blocks represents signaling of the embb-MF within a basic transmission bandwidth, and each block may support 1-2 repetitive transmissions of the embb-MF. The multiple sets of resources may be discrete in the frequency domain or continuous in time. The frequency domain location of each set of resources may be derived based on the repetition index and the first set of starting resources.

For example, in this example, the center frequency of the first resource block is based on the bias

The frequency domain resources of other groups are obtained by adding a frequency hopping interval on the basis of the frequency domain resources of other groups

Thus obtaining the product. Here, the hopping interval is fixed, and the frequency domain resource positions of the other groups are obtained based on the frequency domain resource of the first group and the repetition index n of the current group. Wherein the above deviation

Either as a preset value or as derived from the physical cell identity ID. The frequency domain resources are distributed on one side or two sides of the central frequency point of the communication system.

Step 203: and if the frequency domain resource is the basic transmission bandwidth, repeatedly transmitting the enhanced cell public signal on the time domain resource.

The repeatedly transmitting the enhanced cell common signal on the time domain resource may specifically include repeatedly transmitting the enhanced cell common signal in each TTI or repeatedly transmitting the enhanced cell common signal in a subsequent TTI, so as to achieve coverage enhancement of the cell common signal.

Step 204: and if the frequency domain resources comprise a plurality of groups of resources and the bandwidth of each group of resources is the basic transmission bandwidth, repeatedly transmitting the common signals of the enhanced cell on the frequency domain resources or repeatedly transmitting the common signals of the enhanced cell on the frequency domain resources and the time domain resources.

Specifically, as shown in fig. 13, when the frequency domain resource includes multiple sets of resources, the common signal of the enhanced cell is repeatedly transmitted on the frequency domain resource, or as shown in fig. 14, when the time domain resource includes multiple sets of resources and the time domain resource includes multiple sets of resources, the common signal of the enhanced cell is repeatedly transmitted on the frequency domain resource and the time domain resource, so as to achieve coverage enhancement of the common signal of the cell.

The coverage enhancement method of the cell public signal of the embodiment of the invention determines the frequency domain resource and the time domain resource of the enhanced cell public signal for coverage enhancement; and carrying out resource mapping processing on the enhanced symbol corresponding to the enhanced cell public signal to obtain the time domain resource of the enhanced cell public signal. Determining the frequency domain resource of the enhanced cell public signal according to the basic transmission bandwidth of the enhanced cell public signal; if the frequency domain resource is the basic transmission bandwidth, repeatedly transmitting the enhanced cell public signal on a time domain resource; if the frequency domain resources comprise multiple groups of resources, and the bandwidth of each group of resources is the basic transmission bandwidth, the common signals of the enhanced cell are repeatedly transmitted on the frequency domain resources, or the common signals of the enhanced cell are repeatedly transmitted on the frequency domain resources and the time domain resources, so that coverage enhancement of the common signals of the cell is realized, and a user or a device in deep fading can search and access the current cell.

Third embodiment

As shown in fig. 15, an embodiment of the present invention further provides a method for acquiring a cell common signal, which is applied to a terminal, and includes:

step 1501: frequency domain resources for transmitting enhanced cell common signals are determined.

Here, the base station repeatedly transmits the enhanced cell common signal on the frequency domain resource for transmitting the enhanced cell common signal.

The step 1501 specifically includes:

step 15011: and carrying out synchronous signal detection processing in the expanded bandwidth to obtain the cell physical identification PCI.

Specifically, within a bandwidth of 5MHz or 10MHz, a synchronization signal is detected and processed to obtain a cell physical identifier PCI.

Step 15012: and determining the frequency domain resource of the common signal of the enhanced cell according to the PCI.

If the size of the frequency domain resource is the basic transmission bandwidth of the enhanced cell public signal, determining the deviation between the central frequency point of the enhanced cell public signal transmission and the central frequency point of the communication system according to the PCI, and obtaining the position of the frequency domain resource according to the deviation, wherein the basic transmission bandwidth is the number of resource blocks occupied by the enhanced cell public signal in the frequency domain.

If the size of the frequency domain resource is the bandwidth of the multiple groups of resources, determining the deviation between the central frequency point of the first group of resources in the multiple groups of resources and the central frequency point of the communication system according to the PCI, determining the frequency domain position of the first group of resources according to the deviation between the central frequency point of the first group of resources and the central frequency point of the communication system, and obtaining the frequency domain positions of other groups of resources except the first group of resources in the multiple groups of resources according to the position of the first group of resources and a preset frequency hopping interval.

Step 1502: and acquiring the enhanced cell public signal repeatedly transmitted on the frequency domain resource by the base station.

The method for acquiring the cell public signal determines the frequency domain resource for transmitting the enhanced cell public signal; and acquiring the enhanced cell public signal repeatedly transmitted on the frequency domain resource by the base station. This scheme allows a user or device in deep fade to also search for and access the current cell.

Fourth embodiment

As shown in fig. 16, an embodiment of the present invention further provides a coverage enhancement apparatus for a cell common signal, which is applied to a base station, and includes:

a first determining module 1601, configured to determine, according to a preset coverage enhancement degree of a cell, a frequency domain resource and a time domain resource of an enhanced cell common signal for performing coverage enhancement;

a transmission module 1602, configured to repeatedly transmit the enhanced cell common signal on the determined frequency domain resource and/or time domain resource.

In the coverage enhancement device for a cell common signal according to the embodiment of the present invention, the first determining module is specifically configured to determine, according to a maximum coverage enhancement degree predefined by the cell, a frequency domain resource and a time domain resource of a coverage enhancement cell common signal.

According to the coverage enhancement device for the cell public signal, disclosed by the embodiment of the invention, the cell public signal comprises an MF main system information block.

In the coverage enhancement apparatus for a cell common signal according to the embodiment of the present invention, the first determining module includes:

the first determining submodule is used for carrying out resource mapping processing on the enhanced symbol corresponding to the enhanced cell public signal to obtain the time domain resource of the enhanced cell public signal;

and the second determining submodule is used for determining the frequency domain resources of the enhanced cell public signals according to the basic transmission bandwidth of the enhanced cell public signals, wherein the basic transmission bandwidth is the number of resource blocks occupied by the enhanced cell public signals on the frequency domain.

In the coverage enhancement apparatus for a cell common signal according to the embodiment of the present invention, the first determining submodule includes:

and the first determining unit is used for performing puncturing processing on the enhanced symbol and performing resource mapping processing on the enhanced symbol after the puncturing processing, so as to obtain the time domain resource of the enhanced cell public signal.

and a mapping unit, configured to map, to the symbols in each TTI, the enhancement symbols that include the CRS, and map, to the enhancement symbols that do not include the CRS, the symbols that do not include the CRS in the TTI.

In the coverage enhancement device for the cell common signal according to the embodiment of the present invention, the enhanced cell common signal is an enhanced MF physical broadcast channel eMF-PBCH, and the eMF-PBCH corresponds to 5 enhancement symbols, and a first enhancement symbol, a second enhancement symbol, and a fifth enhancement symbol of the 5 enhancement symbols include CRS; and

the mapping unit includes:

a first mapping subunit, configured to map a first enhancement symbol of the eMF-PBCH in a third symbol and a eighth symbol of the TTI, map a second enhancement symbol of the eMF-PBCH in a fourth symbol and a ninth symbol of the TTI, map a third enhancement symbol of the eMF-PBCH in a sixth symbol and a tenth symbol of the TTI, map a fourth enhancement symbol of the eMF-PBCH in a seventh symbol and an eleventh symbol of the TTI, and map a fifth enhancement symbol of the eMF-PBCH in a fifth symbol and a twelfth symbol of the TTI, if each TTI includes 12 symbols and a primary synchronization signal PSS, a secondary synchronization signal SSS, an MF-PSS, an MF-SSS, and an MF-PBCH are present in the TTI.

the mapping unit includes:

a second mapping subunit, configured to map, if 14 symbols are included in each TTI, and there are PSS and SSS in the TTI, and there are no MF-PSS, MF-SSS, and MF-PBCH, the first enhancement symbol of eMF-PBCH in the third symbol and the eighth symbol in each TTI, the second enhancement symbol of eMF-PBCH in the fourth symbol and the ninth symbol in each TTI, the third enhancement symbol of eMF-PBCH in the tenth symbol and the thirteenth symbol in each TTI, the fourth enhancement symbol of eMF-PBCH in the eleventh symbol and the fourteenth symbol in each TTI, and the fifth enhancement symbol of eMF-PBCH in the twelfth symbol and the fifth symbol in each TTI.

In the coverage enhancement device for the cell common signal in the embodiment of the present invention, the enhanced cell common signal is an enhanced MF physical broadcast channel eMF-PBCH, and the eMF-PBCH corresponds to 6 enhancement symbols, and a first enhancement symbol, a second enhancement symbol, a fifth enhancement symbol, and a sixth enhancement symbol in the 6 enhancement symbols include CRS; and

the mapping unit includes:

a third mapping subunit, configured to, if each TTI contains 12 symbols and there are PSS, SSS, MF-PSS, MF-SSS, and MF-PBCH in the TTI, the eMF-PBCH first enhancement symbol is mapped in the first and eighth symbol in each TTI, mapping a second enhancement symbol of the eMF-PBCH in a second symbol and a ninth symbol in each of the TTIs, mapping the eMF-third enhancement symbol of PBCH in the third symbol and the tenth symbol in each TTI, mapping a fourth enhancement symbol of the eMF-PBCH in a fourth symbol and an eleventh symbol in each of the TTIs, mapping a fifth enhancement symbol of the eMF-PBCH in a seventh symbol and a twelfth symbol in each of the TTIs, mapping a sixth enhancement symbol of the eMF-PBCH in a fifth symbol and a seventh symbol in each of the TTIs.

the mapping unit includes:

a fourth mapping subunit, configured to, if each of the TTIs comprises 14 symbols and there are no PSS, SSS, MF-PSS, MF-SSS, and MF-PBCH in the TTI, the eMF-PBCH first enhancement symbol is mapped in the third and eighth symbol in each TTI, mapping a second enhancement symbol of the eMF-PBCH in a fourth symbol and a ninth symbol in each of the TTIs, mapping the eMF-third enhancement symbol of PBCH in the sixth symbol and the tenth symbol in each TTI, mapping a fourth enhancement symbol of the eMF-PBCH in a seventh symbol and an eleventh symbol in each of the TTIs, mapping a fifth enhancement symbol of the eMF-PBCH in a fifth symbol and a twelfth symbol in each of the TTIs, mapping a sixth enhancement symbol of the eMF-PBCH in a thirteenth symbol and a fourteenth symbol in each of the TTIs.

the mapping unit includes:

a fifth mapping subunit, configured to, if each TTI contains 14 symbols, and there are enhanced MF-SSS for the sixth symbol and the seventh symbol, and enhanced MF-PSS for the seventh symbol in the TTI, the eMF-PBCH first enhancement symbol is mapped in the third and eighth symbol in each TTI, mapping a second enhancement symbol of the eMF-PBCH in a fourth symbol and a ninth symbol in each of the TTIs, mapping a third enhancement symbol of the eMF-PBCH in a tenth symbol and a thirteenth symbol in each of the TTIs, mapping a fourth enhancement symbol of the eMF-PBCH in an eleventh symbol and a fourteenth symbol in each of the TTIs, mapping a fifth enhancement symbol of the eMF-PBCH in a fifth symbol and a twelfth symbol in each of the TTIs.

In the coverage enhancement device for the cell common signal in the embodiment of the present invention, the enhanced cell common signal is an enhanced MF physical broadcast channel eMF-PBCH, and the eMF-PBCH corresponds to 4 enhancement symbols, and a first enhancement symbol, a second enhancement symbol, and a fourth enhancement symbol in the 4 symbols include CRS; and

the mapping unit includes:

a sixth mapping subunit, configured to map, if each TTI includes 12 symbols, and there are enhanced MF-SSS for the sixth symbol and the seventh symbol and enhanced MF-PSS for the seventh symbol in the TTI, the first enhancement symbol of the eMF-PBCH in the eighth symbol and the twelfth symbol in each TTI, the second enhancement symbol of the eMF-PBCH in the fifth symbol and the ninth symbol in each TTI, the third enhancement symbol of the eMF-PBCH in the third symbol and the tenth symbol in each TTI, and the fourth enhancement symbol of the eMF-PBCH in the fourth symbol and the eleventh symbol in each TTI.

In the coverage enhancement device for the cell common signal according to the embodiment of the present invention, the second determining sub-module is configured to select multiple sets of resources in a frequency domain as frequency domain resources for enhancing the cell common signal, where a bandwidth of each set of resources is equal to the basic transmission bandwidth, and the multiple sets of resources are discrete or continuous in the frequency domain.

In the coverage enhancement device for the cell public signal according to the embodiment of the present invention, the second determining submodule is specifically configured to determine the central frequency point of the first group of resources according to the deviation between the central frequency point of the enhanced cell public signal transmission and the central frequency point of the communication system, and obtain the frequency domain positions of other groups of resources in the multiple groups of resources except for the first group of resources according to the central frequency point of the first group of resources and a preset frequency hopping interval.

According to the coverage enhancement device for the cell public signal, the deviation is a preset value or is obtained according to the physical cell identification ID.

The coverage enhancement device for the cell public signal of the embodiment of the invention comprises a transmission module and a receiving module, wherein the transmission module comprises:

a first transmission sub-module, configured to repeatedly transmit the enhanced cell common signal on a time domain resource if the frequency domain resource is the basic transmission bandwidth.

a second transmission sub-module, configured to repeatedly transmit the enhanced cell common signal on a frequency domain resource or repeatedly transmit the enhanced cell common signal on the frequency domain resource and the time domain resource if the frequency domain resource includes multiple sets of resources and a bandwidth of each set of resources is the basic transmission bandwidth.

According to the coverage enhancement device for the cell public signals, the frequency domain resources are distributed on one side or two sides of the central frequency point of the communication system.

The coverage enhancement device for the cell public signal determines the frequency domain resource and the time domain resource of the enhanced cell public signal for coverage enhancement; repeatedly transmitting the enhanced cell common signal on the determined frequency domain resource and/or time domain resource. The embodiment of the invention realizes the coverage enhancement of the cell public signal by repeatedly transmitting the enhanced cell public signal on the frequency domain resource and/or the time domain resource, so that a user or a device in deep fading can search and access the current cell.

It should be noted that the coverage enhancement apparatus for the cell common signal is an apparatus corresponding to the coverage enhancement method for the cell common signal, and all the implementation manners in the above method embodiments are applicable to the embodiment of the apparatus, so that the same technical effect can be achieved.

Fifth embodiment

As shown in fig. 17, an embodiment of the present invention further provides a base station, including:

a first processor 1701, configured to determine, according to a preset coverage enhancement degree of a cell, a frequency domain resource and a time domain resource of an enhanced cell common signal for performing coverage enhancement;

a first transmitter 1702 for repeatedly transmitting the enhanced cell common signal on the determined frequency domain resource and/or time domain resource.

The first processor 1701 may be further configured and configured to implement the functions implemented by all the modules in the coverage enhancement apparatus for cell common signals, and achieve the same technical effects as those achieved by the coverage enhancement apparatus for cell common signals.

Sixth embodiment

As shown in fig. 18, an embodiment of the present invention further provides an apparatus for acquiring a cell common signal, which is applied to a terminal, and includes:

a second determining module 1801, configured to determine a frequency domain resource for transmitting an enhanced cell common signal;

an obtaining module 1802, configured to obtain an enhanced cell common signal repeatedly transmitted by the base station on the frequency domain resource.

In the apparatus for acquiring a cell common signal according to the embodiment of the present invention, the second determining module includes:

the third determining submodule is used for detecting and processing the synchronous signal in the expanded bandwidth to obtain the cell physical identification PCI;

and the fourth determining submodule is used for determining the frequency domain resource of the common signal of the enhanced cell according to the PCI.

In the device for acquiring a cell common signal according to the embodiment of the present invention, the third determining submodule is configured to perform synchronization signal detection processing within a bandwidth of 5MHz or 10MHz, so as to obtain a cell physical identifier PCI.

In the apparatus for acquiring a cell common signal according to the embodiment of the present invention, the fourth determining submodule includes:

and a second determining unit, configured to determine, according to the PCI, a deviation between a central frequency point of the enhanced cell public signal transmission and a central frequency point of a communication system if the size of the frequency domain resource is a basic transmission bandwidth of the enhanced cell public signal, and obtain a position of the frequency domain resource according to the deviation, where the basic transmission bandwidth is the number of resource blocks occupied by the enhanced cell public signal in a frequency domain.

And a third determining unit, configured to determine, according to the PCI, a deviation between a central frequency point of a first group of resources in the multiple groups of resources and a central frequency point of the communication system, determine, according to the deviation between the central frequency point of the first group of resources and the central frequency point of the communication system, a frequency domain position of the first group of resources, and obtain, according to the position of the first group of resources and a preset frequency hopping interval, frequency domain positions of other groups of resources in the multiple groups of resources except the first group of resources.

The device for acquiring the cell public signal determines the frequency domain resource for transmitting the enhanced cell public signal; and acquiring the enhanced cell public signal repeatedly transmitted on the frequency domain resource by the base station. This scheme allows a user or device in deep fade to also search for and access the current cell.

Seventh embodiment

As shown in fig. 19, an embodiment of the present invention further provides a terminal, including:

a second processor 1901 configured to determine frequency domain resources for transmission of enhanced cell common signals;

a receiver 1902, configured to obtain an enhanced cell common signal repeatedly transmitted by a base station on the frequency domain resource.

The second processor 1901 of the terminal according to the embodiment of the present invention may be configured to implement the functions implemented by all the modules in the above-mentioned cell common signal obtaining apparatus embodiment, and may also achieve the same technical effects as those achieved by the above-mentioned cell common signal obtaining apparatus embodiment.

The terminal described in the embodiment of the present invention may be a mobile phone (or a mobile phone), or other devices capable of sending or receiving wireless signals, including a user equipment (terminal), a Personal Digital Assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a wireless local loop (W LL) station, a CPE or Mifi capable of converting mobile signals into wifi signals, an intelligent appliance, or other devices capable of autonomously communicating with a mobile communication network without human operation, and the like.

Furthermore, it is to be noted that in the device and method of the invention, it is obvious that the individual components or steps can be decomposed and/or recombined. These decompositions and/or recombinations are to be regarded as equivalents of the present invention. Also, the steps of performing the series of processes described above may naturally be performed chronologically in the order described, but need not necessarily be performed chronologically, and some steps may be performed in parallel or independently of each other. It will be understood by those skilled in the art that all or any of the steps or elements of the method and apparatus of the present invention may be implemented in any computing device (including processors, storage media, etc.) or network of computing devices, in hardware, firmware, software, or any combination thereof, which can be implemented by those skilled in the art using their basic programming skills after reading the description of the present invention.

Thus, the objects of the invention may also be achieved by running a program or a set of programs on any computing device. The computing device may be a general purpose device as is well known. The object of the invention is thus also achieved solely by providing a program product comprising program code for implementing the method or the apparatus. That is, such a program product also constitutes the present invention, and a storage medium storing such a program product also constitutes the present invention. It is to be understood that the storage medium may be any known storage medium or any storage medium developed in the future. It is further noted that in the apparatus and method of the present invention, it is apparent that each component or step can be decomposed and/or recombined. These decompositions and/or recombinations are to be regarded as equivalents of the present invention. Also, the steps of executing the series of processes described above may naturally be executed chronologically in the order described, but need not necessarily be executed chronologically. Some steps may be performed in parallel or independently of each other.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.

A1. A coverage enhancement method of a cell public signal is applied to a base station, and is characterized by comprising the following steps:

A2. The method for enhancing coverage of a cell public signal according to a1, wherein the step of determining a frequency domain resource and a time domain resource of an enhanced cell public signal for performing coverage enhancement according to a preset degree of coverage enhancement of a cell includes:

and determining the frequency domain resource and the time domain resource of the enhanced cell public signal for coverage enhancement according to the maximum coverage enhancement degree predefined by the cell.

A3. The method for coverage enhancement of a cell common signal according to a1, wherein the cell common signal includes an MF main system information block.

A4. The method for coverage enhancement of a cell common signal according to a1, wherein the step of determining the frequency domain resource and the time domain resource of the enhanced cell common signal for coverage enhancement includes:

performing resource mapping processing on the enhanced symbol corresponding to the enhanced cell public signal to obtain a time domain resource of the enhanced cell public signal;

and determining the frequency domain resource of the enhanced cell public signal according to the basic transmission bandwidth of the enhanced cell public signal, wherein the basic transmission bandwidth is the number of resource blocks occupied by the enhanced cell public signal in the frequency domain.

A5. The method for enhancing coverage of a cell common signal according to a4, wherein the step of performing resource mapping processing on an enhanced symbol corresponding to the enhanced cell common signal to obtain a time domain resource of the enhanced cell common signal includes:

and performing puncturing and puncturing processing on the enhanced symbols, and performing resource mapping processing on the enhanced symbols after the puncturing processing to obtain the time domain resources of the enhanced cell public signals.

A6. The method for enhancing coverage of a cell common signal according to a4, wherein the step of performing resource mapping processing on an enhanced symbol corresponding to the enhanced cell common signal to obtain a time domain resource of the enhanced cell common signal includes:

and mapping the symbols in each transmission time interval TTI to the enhancement symbols containing CRS, and mapping the symbols not containing CRS in the TTI to the enhancement symbols not containing CRS.

A7. The method of coverage enhancement of cell common signal according to A6, wherein the enhanced cell common signal is an enhanced MF physical broadcast channel eMF-PBCH, and the eMF-PBCH corresponds to 5 enhancement symbols, and CRS is included in a first enhancement symbol, a second enhancement symbol and a fifth enhancement symbol of the 5 enhancement symbols; and

the method for mapping the symbols in each transmission time interval TTI to the enhancement symbols containing CRS and mapping the symbols not containing CRS in the TTI to the enhancement symbols not containing CRS comprises the following steps:

if 12 symbols are included in each TTI and primary synchronization signals PSS, secondary synchronization signals SSS, MF-PSS, MF-SSS, and MF-PBCH are present in the TTI, the first enhancement symbol of eMF-PBCH is mapped in the third and eighth symbols in each TTI, the second enhancement symbol of eMF-PBCH is mapped in the fourth and ninth symbols in each TTI, the third enhancement symbol of eMF-PBCH is mapped in the sixth and tenth symbols in each TTI, the fourth enhancement symbol of eMF-PBCH is mapped in the seventh and eleventh symbols in each TTI, and the fifth enhancement symbol of eMF-PBCH is mapped in the fifth and twelfth symbols in each TTI.

A8. The method of coverage enhancement of cell common signal according to A6, wherein the enhanced cell common signal is an enhanced MF physical broadcast channel eMF-PBCH, and the eMF-PBCH corresponds to 5 enhancement symbols, and CRS is included in a first enhancement symbol, a second enhancement symbol and a fifth enhancement symbol of the 5 enhancement symbols; and

if 14 symbols are included in each TTI, and there are PSS and SSS in the TTI, and there are no MF-PSS, MF-SSS, and MF-PBCH, then the first enhancement symbol of eMF-PBCH is mapped in the third symbol and eighth symbol in each TTI, the second enhancement symbol of eMF-PBCH is mapped in the fourth symbol and ninth symbol in each TTI, the third enhancement symbol of eMF-PBCH is mapped in the tenth symbol and thirteenth symbol in each TTI, the fourth enhancement symbol of eMF-PBCH is mapped in the eleventh symbol and fourteenth symbol in each TTI, and the fifth enhancement symbol of eMF-PBCH is mapped in the fifth symbol and twelfth symbol in each TTI.

A9. The method of coverage enhancement of cell common signal according to a6, wherein the enhanced cell common signal is an enhanced MF physical broadcast channel eMF-PBCH, and the eMF-PBCH corresponds to 6 enhancement symbols, and CRS is included in a first enhancement symbol, a second enhancement symbol, a fifth enhancement symbol and a sixth enhancement symbol of the 6 enhancement symbols; and

A10. The method of coverage enhancement of cell common signal according to a6, wherein the enhanced cell common signal is an enhanced MF physical broadcast channel eMF-PBCH, and the eMF-PBCH corresponds to 6 enhancement symbols, and CRS is included in a first enhancement symbol, a second enhancement symbol, a fifth enhancement symbol and a sixth enhancement symbol of the 6 enhancement symbols; and

A11. The method of coverage enhancement of cell common signal according to A6, wherein the enhanced cell common signal is an enhanced MF physical broadcast channel eMF-PBCH, and the eMF-PBCH corresponds to 5 enhancement symbols, and CRS is included in a first enhancement symbol, a second enhancement symbol and a fifth enhancement symbol of the 5 enhancement symbols; and

A12. The method of coverage enhancement of cell common signal according to a6, wherein the enhanced cell common signal is an enhanced MF physical broadcast channel eMF-PBCH, and the eMF-PBCH corresponds to 4 enhancement symbols, and CRS is included in a first enhancement symbol, a second enhancement symbol and a fourth enhancement symbol of the 4 symbols; and

A13. The method for enhancing coverage of a cell common signal according to a4, wherein the step of determining the frequency domain resource of the enhanced cell common signal according to the basic transmission bandwidth of the enhanced cell common signal comprises:

and selecting multiple groups of resources on a frequency domain as frequency domain resources of the enhanced cell common signal, wherein the bandwidth of each group of resources is equal to the basic transmission bandwidth, and the multiple groups of resources are discrete or continuous on the frequency domain.

A14. The method for enhancing coverage of a cell common signal according to a13, wherein the step of selecting multiple sets of resources in the frequency domain as the frequency domain resources for enhancing the cell common signal comprises:

and determining the central frequency point of the first group of resources according to the deviation between the central frequency point transmitted by the enhanced cell public signal and the central frequency point of the communication system, and obtaining the frequency domain positions of other groups of resources except the first group of resources in the plurality of groups of resources according to the central frequency point of the first group of resources and a preset frequency hopping interval.

A15. The method for coverage enhancement of cell common signals according to a14, wherein the deviation is a preset value or obtained according to a physical cell identity ID.

A16. The method for coverage enhancement of the cell common signal according to a4, wherein the step of repeatedly transmitting the enhanced cell common signal on the determined frequency domain resource and/or time domain resource comprises:

and if the frequency domain resource is the basic transmission bandwidth, repeatedly transmitting the enhanced cell public signal on the time domain resource.

A17. The method for coverage enhancement of the cell common signal according to a4, wherein the step of repeatedly transmitting the enhanced cell common signal on the determined frequency domain resource and/or time domain resource comprises:

and if the frequency domain resources comprise a plurality of groups of resources and the bandwidth of each group of resources is the basic transmission bandwidth, repeatedly transmitting the common signals of the enhanced cell on the frequency domain resources or repeatedly transmitting the common signals of the enhanced cell on the frequency domain resources and the time domain resources.

A18. The method for enhancing coverage of a cell public signal according to a1, wherein the frequency domain resources are distributed on one side or both sides of a central frequency point of a communication system.

B19. A coverage enhancement device for a cell common signal, applied to a base station, comprises:

B20. The apparatus for enhancing coverage of a cell public signal according to B19, wherein the first determining module is specifically configured to determine, according to a maximum coverage enhancement degree predefined by the cell, a frequency domain resource and a time domain resource of an enhanced cell public signal for performing coverage enhancement.

B21. The apparatus for coverage enhancement of a cell common signal according to B19, wherein the cell common signal contains an MF main system information block.

B22. The device for enhancing coverage of a cell common signal according to B19, wherein the first determining module comprises:

B23. The device for enhancing coverage of a cell common signal according to B22, wherein the first determining submodule comprises:

B24. The device for enhancing coverage of a cell common signal according to B22, wherein the first determining module comprises:

B25. The apparatus for coverage enhancement of cell common signal according to B24, wherein the enhanced cell common signal is an enhanced MF physical broadcast channel eMF-PBCH, and the eMF-PBCH corresponds to 5 enhancement symbols, and CRS is included in a first, a second, and a fifth enhancement symbol of the 5 enhancement symbols; and

the mapping unit includes:

B26. The apparatus for coverage enhancement of cell common signal according to B24, wherein the enhanced cell common signal is an enhanced MF physical broadcast channel eMF-PBCH, and the eMF-PBCH corresponds to 5 enhancement symbols, and CRS is included in a first, a second, and a fifth enhancement symbol of the 5 enhancement symbols; and

the mapping unit includes:

B27. The apparatus for coverage enhancement of cell common signal according to B24, wherein the enhanced cell common signal is an enhanced MF physical broadcast channel eMF-PBCH, and the eMF-PBCH corresponds to 6 enhancement symbols, and CRS is included in a first enhancement symbol, a second enhancement symbol, a fifth enhancement symbol, and a sixth enhancement symbol of the 6 enhancement symbols; and

the mapping unit includes:

B28. The apparatus for coverage enhancement of cell common signal according to B24, wherein the enhanced cell common signal is an enhanced MF physical broadcast channel eMF-PBCH, and the eMF-PBCH corresponds to 6 enhancement symbols, and CRS is included in a first enhancement symbol, a second enhancement symbol, a fifth enhancement symbol, and a sixth enhancement symbol of the 6 enhancement symbols; and

the mapping unit includes:

B29. The apparatus for coverage enhancement of cell common signal according to B24, wherein the enhanced cell common signal is an enhanced MF physical broadcast channel eMF-PBCH, and the eMF-PBCH corresponds to 5 enhancement symbols, and CRS is included in a first, a second, and a fifth enhancement symbol of the 5 enhancement symbols; and

the mapping unit includes:

B30. The apparatus for coverage enhancement of cell common signals according to B24, wherein the enhanced cell common signals are an enhanced MF physical broadcast channel eMF-PBCH, and the eMF-PBCH corresponds to 4 enhancement symbols, and CRS is included in a first enhancement symbol, a second enhancement symbol, and a fourth enhancement symbol of the 4 symbols; and

the mapping unit includes:

B31. The apparatus for enhancing coverage of a cell common signal according to B22, wherein the second determining sub-module is configured to select multiple sets of resources in a frequency domain as the frequency domain resources for enhancing the cell common signal, wherein a bandwidth of each set of resources is equal to the basic transmission bandwidth, and the multiple sets of resources are discrete or continuous in the frequency domain.

B32. The device for enhancing coverage of a cell public signal according to B31, wherein the second determining submodule is specifically configured to determine a central frequency point of a first group of resources according to a deviation between a central frequency point of the enhanced cell public signal transmission and a central frequency point of a communication system, and obtain frequency domain positions of other groups of resources in the plurality of groups of resources except for the first group of resources according to the central frequency point of the first group of resources and a preset frequency hopping interval.

B33. The apparatus for coverage enhancement of cell common signals according to B32, wherein the deviation is a preset value or obtained according to a physical cell identity ID.

B34. The device for enhancing coverage of a cell common signal according to B22, wherein the transmission module comprises:

B35. The device for enhancing coverage of a cell common signal according to B22, wherein the transmission module comprises:

B36. The device for enhancing coverage of a cell public signal according to B19, wherein the frequency domain resources are distributed on one side or both sides of a central frequency point of a communication system.

C37. A base station, comprising:

D38. A method for acquiring a cell public signal is applied to a terminal, and is characterized by comprising the following steps:

D39. The method for acquiring the cell common signal according to D38, wherein the step of determining the frequency domain resource for transmitting the enhanced cell common signal comprises:

carrying out synchronous signal detection processing in the expanded bandwidth to obtain a cell physical identifier PCI;

and determining the frequency domain resource of the common signal of the enhanced cell according to the PCI.

D40. The method for acquiring the cell common signal according to D39, wherein the step of performing synchronization signal detection processing within the extended bandwidth to obtain the cell physical identifier PCI includes:

and carrying out synchronous signal detection processing in a bandwidth of 5MHz or 10MHz to obtain a cell physical identifier PCI.

D41. The method for acquiring the cell common signal according to D39, wherein the step of determining the frequency domain resource for enhancing the cell common signal according to the PCI comprises:

if the size of the frequency domain resource is the basic transmission bandwidth of the enhanced cell public signal, determining the deviation between the central frequency point of the enhanced cell public signal transmission and the central frequency point of the communication system according to the PCI, and obtaining the position of the frequency domain resource according to the deviation, wherein the basic transmission bandwidth is the number of resource blocks occupied by the enhanced cell public signal in the frequency domain;

E42. An apparatus for acquiring a cell common signal, applied to a terminal, includes:

E43. The apparatus for acquiring a cell common signal according to E42, wherein the second determining module comprises:

E44. The apparatus for acquiring a cell common signal according to E43, wherein the third determining submodule is configured to perform synchronization signal detection processing within a bandwidth of 5MHz or 10MHz, so as to obtain a cell physical identifier PCI.

E45. The apparatus for acquiring a cell common signal according to E43, wherein the fourth determining submodule includes:

a second determining unit, configured to determine, according to the PCI, a deviation between a central frequency point of the enhanced cell public signal transmission and a central frequency point of a communication system if the size of the frequency domain resource is a basic transmission bandwidth of the enhanced cell public signal, and obtain a position of the frequency domain resource according to the deviation, where the basic transmission bandwidth is the number of resource blocks occupied by the enhanced cell public signal in a frequency domain;

F46. A terminal, comprising:

Claims

1. A coverage enhancement method of a cell public signal is applied to a base station, and is characterized by comprising the following steps:

repeatedly transmitting the enhanced cell common signal on the determined frequency domain resource and/or time domain resource;

the step of determining the frequency domain resource and the time domain resource of the enhanced cell public signal for coverage enhancement includes:

determining frequency domain resources of the enhanced cell public signal according to a basic transmission bandwidth of the enhanced cell public signal, wherein the basic transmission bandwidth is the number of resource blocks occupied by the enhanced cell public signal in a frequency domain;

2. The method for coverage enhancement of a cell public signal according to claim 1, wherein the step of determining the frequency domain resource and the time domain resource of the enhanced cell public signal for coverage enhancement according to the degree of coverage enhancement preset by the cell comprises:

3. The method of claim 1, wherein the cell common signal comprises an MF main system information block.

4. The method of claim 1, wherein the step of performing resource mapping processing on the enhanced symbol corresponding to the enhanced cell common signal to obtain the time domain resource of the enhanced cell common signal comprises:

5. The method of claim 1, wherein the enhanced cell common signal is an enhanced MF physical broadcast channel eMF-PBCH, and the eMF-PBCH corresponds to 5 enhancement symbols, and CRS is included in a first enhancement symbol, a second enhancement symbol, and a fifth enhancement symbol of the 5 enhancement symbols; and

6. The method of claim 1, wherein the enhanced cell common signal is an enhanced MF physical broadcast channel eMF-PBCH, and the eMF-PBCH corresponds to 5 enhancement symbols, and CRS is included in a first enhancement symbol, a second enhancement symbol, and a fifth enhancement symbol of the 5 enhancement symbols; and

7. The method of claim 1, wherein the enhanced cell common signal is an enhanced MF physical broadcast channel eMF-PBCH, and the eMF-PBCH corresponds to 6 enhancement symbols, and CRS is included in a first enhancement symbol, a second enhancement symbol, a fifth enhancement symbol, and a sixth enhancement symbol of the 6 enhancement symbols; and

8. The method of claim 1, wherein the enhanced cell common signal is an enhanced MF physical broadcast channel eMF-PBCH, and the eMF-PBCH corresponds to 6 enhancement symbols, and CRS is included in a first enhancement symbol, a second enhancement symbol, a fifth enhancement symbol, and a sixth enhancement symbol of the 6 enhancement symbols; and

9. The method of claim 1, wherein the enhanced cell common signal is an enhanced MF physical broadcast channel eMF-PBCH, and the eMF-PBCH corresponds to 5 enhancement symbols, and CRS is included in a first enhancement symbol, a second enhancement symbol, and a fifth enhancement symbol of the 5 enhancement symbols; and

10. The method of claim 1, wherein the enhanced cell common signal is an enhanced MF physical broadcast channel eMF-PBCH, and the eMF-PBCH corresponds to 4 enhancement symbols, and CRS is included in a first enhancement symbol, a second enhancement symbol, and a fourth enhancement symbol of the 4 symbols; and

11. The method of claim 1, wherein the step of determining the frequency domain resource of the enhanced cell common signal according to the basic transmission bandwidth of the enhanced cell common signal comprises:

12. The method of claim 11, wherein the step of selecting multiple sets of resources in the frequency domain as the frequency domain resources for enhancing the cell common signal comprises:

13. The method of claim 12, wherein the deviation is a predetermined value or is derived from a physical cell identity ID.

14. The method of claim 1, wherein the step of repeatedly transmitting the enhanced cell common signal on the determined frequency domain resource and/or time domain resource comprises:

15. The method of claim 1, wherein the step of repeatedly transmitting the enhanced cell common signal on the determined frequency domain resource and/or time domain resource comprises:

16. The method of claim 1, wherein the frequency domain resources are distributed on one or both sides of a central frequency point of a communication system.

17. A coverage enhancement device for a cell common signal, applied to a base station, comprises:

a transmission module, configured to repeatedly transmit the enhanced cell common signal on the determined frequency domain resource and/or time domain resource;

the first determining module includes:

a second determining submodule, configured to determine, according to a basic transmission bandwidth of the enhanced cell public signal, a frequency domain resource of the enhanced cell public signal, where the basic transmission bandwidth is the number of resource blocks occupied by the enhanced cell public signal in a frequency domain;

18. The apparatus for coverage enhancement of a cell common signal according to claim 17, wherein the first determining module is specifically configured to determine, according to a maximum coverage enhancement degree predefined by the cell, a frequency domain resource and a time domain resource of an enhanced cell common signal for performing coverage enhancement.

19. The apparatus of claim 17, wherein the cell common signal comprises an MF main system information block.

20. The apparatus for enhancing coverage of a cell common signal according to claim 17, wherein the first determining submodule comprises:

21. The apparatus of claim 17, wherein the enhanced cell common signal is an enhanced MF physical broadcast channel eMF-PBCH, and the eMF-PBCH corresponds to 5 enhancement symbols, and CRS is included in a first enhancement symbol, a second enhancement symbol, and a fifth enhancement symbol of the 5 enhancement symbols; and

the mapping unit includes:

22. The apparatus of claim 17, wherein the enhanced cell common signal is an enhanced MF physical broadcast channel eMF-PBCH, and the eMF-PBCH corresponds to 5 enhancement symbols, and CRS is included in a first enhancement symbol, a second enhancement symbol, and a fifth enhancement symbol of the 5 enhancement symbols; and

the mapping unit includes:

23. The apparatus of claim 17, wherein the enhanced cell common signal is an enhanced MF physical broadcast channel eMF-PBCH, and the eMF-PBCH corresponds to 6 enhancement symbols, and CRS is included in a first enhancement symbol, a second enhancement symbol, a fifth enhancement symbol, and a sixth enhancement symbol of the 6 enhancement symbols; and

the mapping unit includes:

24. The apparatus of claim 17, wherein the enhanced cell common signal is an enhanced MF physical broadcast channel eMF-PBCH, and the eMF-PBCH corresponds to 6 enhancement symbols, and CRS is included in a first enhancement symbol, a second enhancement symbol, a fifth enhancement symbol, and a sixth enhancement symbol of the 6 enhancement symbols; and

the mapping unit includes:

25. The apparatus of claim 17, wherein the enhanced cell common signal is an enhanced MF physical broadcast channel eMF-PBCH, and the eMF-PBCH corresponds to 5 enhancement symbols, and CRS is included in a first enhancement symbol, a second enhancement symbol, and a fifth enhancement symbol of the 5 enhancement symbols; and

the mapping unit includes:

26. The apparatus of claim 17, wherein the enhanced cell common signal is an enhanced MF physical broadcast channel eMF-PBCH, and the eMF-PBCH corresponds to 4 enhancement symbols, and CRS is included in a first enhancement symbol, a second enhancement symbol, and a fourth enhancement symbol of the 4 symbols; and

the mapping unit includes:

27. The apparatus of claim 17, wherein the second determining sub-module is configured to select multiple sets of resources in the frequency domain as the frequency domain resources for enhancing the cell common signal, wherein the bandwidth of each set of resources is equal to the basic transmission bandwidth, and the multiple sets of resources are discrete or continuous in the frequency domain.

28. The device according to claim 27, wherein the second determining sub-module is specifically configured to determine the center frequency point of the first group of resources according to a deviation between the center frequency point of the enhanced cell common signal transmission and the center frequency point of the communication system, and obtain frequency domain positions of other groups of resources in the multiple groups of resources except the first group of resources according to the center frequency point of the first group of resources and a preset frequency hopping interval.

29. The apparatus of claim 28, wherein the deviation is a predetermined value or is derived from a physical cell identity ID.

30. The device for enhancing coverage of a cell common signal according to claim 17, wherein the transmission module comprises:

31. The device for enhancing coverage of a cell common signal according to claim 17, wherein the transmission module comprises:

32. The apparatus of claim 17, wherein the frequency domain resources are distributed at one or both sides of a central frequency point of the communication system.

33. A base station, comprising:

a first transmitter, configured to repeatedly transmit the enhanced cell common signal on the determined frequency domain resource and/or time domain resource;

the first processor is further configured to perform resource mapping processing on an enhanced symbol corresponding to the enhanced cell common signal to obtain a time domain resource of the enhanced cell common signal; determining frequency domain resources of the enhanced cell public signal according to a basic transmission bandwidth of the enhanced cell public signal, wherein the basic transmission bandwidth is the number of resource blocks occupied by the enhanced cell public signal in a frequency domain; and mapping the symbols in each transmission time interval TTI to the enhancement symbols containing CRS, and mapping the symbols not containing CRS in the TTI to the enhancement symbols not containing CRS.

34. A method for acquiring a cell public signal is applied to a terminal, and is characterized by comprising the following steps:

acquiring an enhanced cell public signal repeatedly transmitted on the frequency domain resource by the base station;

the step of determining frequency domain resources for transmitting the enhanced cell common signals comprises:

determining frequency domain resources of the common signals of the enhanced cell according to the PCI;

according to the PCI, the step of determining the frequency domain resource of the enhanced cell public signal comprises the following steps:

35. The method of claim 34, wherein the step of performing a synchronization signal detection process within the extended bandwidth to obtain the cell physical identity PCI comprises:

36. An apparatus for acquiring a cell common signal, applied to a terminal, includes:

an obtaining module, configured to obtain an enhanced cell common signal repeatedly transmitted by a base station on the frequency domain resource;

the second determining module includes:

the fourth determining submodule is used for determining the frequency domain resource of the common signal of the enhanced cell according to the PCI;

the fourth determination submodule includes:

37. The apparatus for acquiring a cell common signal according to claim 36, wherein the third determining submodule is configured to perform synchronization signal detection processing within a bandwidth of 5MHz or 10MHz, so as to obtain a cell physical identifier PCI.

38. A terminal, comprising:

the receiver is used for acquiring the enhanced cell public signal repeatedly transmitted on the frequency domain resource by the base station;

the second processor is further configured to perform synchronization signal detection processing within the extended bandwidth to obtain a cell physical identifier PCI; determining frequency domain resources of the common signals of the enhanced cell according to the PCI; if the size of the frequency domain resource is the basic transmission bandwidth of the enhanced cell public signal, determining the deviation between the central frequency point of the enhanced cell public signal transmission and the central frequency point of the communication system according to the PCI, and obtaining the position of the frequency domain resource according to the deviation, wherein the basic transmission bandwidth is the number of resource blocks occupied by the enhanced cell public signal in the frequency domain.