CN105472532B

CN105472532B - Method and device for transmitting data

Info

Publication number: CN105472532B
Application number: CN201410459366.5A
Authority: CN
Inventors: 陈宪明; 戴博; 夏树强; 鲁照华; 刘锟; 石靖; 方惠英
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2014-09-09
Filing date: 2014-09-09
Publication date: 2020-11-17
Anticipated expiration: 2034-09-09
Also published as: CN105472532A; WO2015184910A1

Abstract

The invention discloses a method and a device for transmitting data, which comprises a base station or a user terminal UE acquiring a sub-band frequency hopping sequence of the data; the base station or the UE determines a sub-band for transmitting data according to the obtained sub-band frequency hopping sequence, and transmits the data on the determined sub-band; where different types of data have different subband hopping sequences. By the scheme of the invention, the sub-band for transmitting data is determined according to the obtained sub-band frequency hopping sequence, so that the frequency hopping transmission of different types of data is realized, and the data transmission performance is improved.

Description

Method and device for transmitting data

Technical Field

The present invention relates to the field of wireless communications, and more particularly, to a method and apparatus for transmitting data.

Background

Machine Type Communication (MTC) User Equipment (UE), also called Machine to Machine (M2M) UE, is a main application form of the internet of things at present. The low power consumption and the low cost are important guarantees for large-scale application. An intelligent meter reading (Smart Metering) class device is one of the most typical applications of the MTC UE. The M2M user equipment currently deployed in the market is mainly based on Global System for Mobile communications (GSM) System.

In recent years, due to the high spectrum efficiency of Long Term Evolution (LTE) systems, more and more mobile operators have determined LTE as the Evolution direction of future broadband wireless communication systems, and various types of data services of M2M based on LTE will be more attractive. However, only if the cost of the LTE-based M2M ue is lower than that of the GSM-based M2M ue, the M2M service can be really transferred from GSM to LTE system, so how to completely reduce the cost of the LTE-M2M ue becomes the first issue to be considered by various companies and research institutions.

The cost of MTC UEs comes mainly from two parts: the baseband processing part and the radio frequency part, and reducing uplink and/or downlink transmission bandwidth (including baseband and radio frequency bandwidth) of the UE is a very effective way to reduce the cost of the MTC UE, for example, in the case of a system bandwidth of 20MHz, the uplink and/or downlink transmission bandwidth of the MTC UE is set to be only a narrow bandwidth such as 1.4 MHz. At present, in order to implement the above-mentioned narrowband transmission, a fixed transmission narrowband is respectively set for public data and uplink/downlink unicast data of MTC UEs in the conventional method; although the method is simple, the MTC UE cannot acquire the frequency diversity gain and/or the frequency selective scheduling gain, thereby reducing the data transmission performance of the MTC UE.

Disclosure of Invention

In order to solve the above problems, the present invention provides a method and an apparatus for transmitting data, which can improve data transmission performance.

In order to achieve the above object, the present invention provides a method for transmitting data, comprising:

a base station or a user terminal UE acquires a sub-band frequency hopping sequence of data;

the base station or the UE determines a sub-band for transmitting data according to the obtained sub-band frequency hopping sequence, and transmits the data on the determined sub-band;

where different types of data have different subband hopping sequences.

Preferably, the method further comprises, before: the base station or the UE acquires a transmission area of the data;

the base station or the UE determines the sub-band for transmitting data according to the obtained sub-band frequency hopping sequence, and the method comprises the following steps:

and the base station or the UE determines the sub-band for transmitting data in the transmission region according to the obtained sub-band frequency hopping sequence.

Preferably, the transmission region comprises one or more sub-bands, wherein the sub-bands occupy one or more physical resource blocks.

Preferably, the data is public data or uplink/downlink unicast data, and the different types of data having different subband hopping sequences include:

the sub-band hopping sequence of the public data is different from the sub-band hopping sequence of the uplink/downlink unicast data.

Preferably, the obtaining, by the base station or the UE, the transmission area of the data includes: and acquiring the transmission area of the public data in a predefined mode, and acquiring the transmission area of the uplink/downlink unicast data in a predefined mode or a broadcast signaling or a special signaling.

Preferably, there is no overlap between the transmission region of the public data and the transmission region of the downlink unicast data;

or the resource mapping mode of the public data in the transmission region of the public data is different from the resource mapping mode of the downlink unicast data in the transmission region of the downlink unicast data.

Preferably, the non-overlapping between the transmission regions of the public data and the downlink unicast data includes: the transmission areas of the downlink unicast data are two sides of the system bandwidth, and the transmission areas of the public data are other areas except the transmission areas of the downlink unicast data in the system bandwidth.

Preferably, the resource mapping manner of the public data in the transmission region of the public data is different from the resource mapping manner of the downlink unicast data in the transmission region of the downlink unicast data, and the resource mapping manner includes:

the public data is mapped from the PRB position of the physical resource block with the lowest index in the sub-band of the transmission region of the public data, and the downlink unicast data is mapped from the PRB position with the highest index in the sub-band of the transmission region of the downlink unicast data;

when the public data conflicts with the downlink unicast data, if the priority of the public data is higher than that of the downlink unicast data, the conflicted sub-band is used for transmitting the public data; and if the priority of the public data is lower than that of the downlink unicast data, the sub-band with the conflict is used for transmitting the downlink unicast data.

Preferably, the broadcast signaling is master information block MIB signaling or system information block SIB signaling.

Preferably, the broadcast signaling or the proprietary signaling includes at least: a field indicating the number of subbands included in a transmission region of the uplink/downlink unicast data; and a field indicating positions of all sub-bands in a transmission region of the uplink/downlink unicast data.

Preferably according to a formula

Calculating specific values of the fields indicating the positions of all sub-bands in the transmission region of the uplink/downlink unicast data;

wherein k is more than or equal to 1_i≤N_total，k_i<k_i+1，v_uThe specific value of the field indicating the positions of all sub-bands in the transmission region of the uplink/downlink unicast data is obtained; n is a radical of_uThe number of sub-bands in the transmission region of the uplink/downlink unicast data; n is a radical of_totalIs the total number of usable subbands in the system bandwidth; k is a radical of_iIs N_uThe ith sub-band of the sub-bands is at N_totalIndices in individual subbands.

Preferably, the sub-band hopping sequence for the base station or the UE to acquire data includes:

the base station or the UE acquires a sub-band frequency hopping base sequence of the data according to the number of sub-bands and the cell identification in the data transmission region; and acquiring the sub-band frequency hopping sequence of the data according to the acquired sub-band frequency hopping base sequence.

Preferably, the length of the subband hopping base sequence or the subband hopping sequence of the data is the number of subbands in the transmission region of the data.

Preferably, the obtaining, by the base station or the UE, the subband hopping base sequence of the data according to the subband number and the cell identifier in the transmission region of the data includes:

generating a pseudo-random sequence according to the cell identifier; acquiring a sub-band frequency hopping base sequence of the data according to the generated pseudo-random sequence; wherein the subband hopping base sequences of the obtained different types of data are different.

Preferably, the sub-band hopping base sequence for acquiring data according to the generated pseudo-random sequence includes:

sequentially generating N according to the pseudo-random sequence_cA and N_uA number of different decimal numbers;

n to be generated_cSorting different decimal numbers according to a first preset rule, and sorting the sorted N_cN before sorting of different decimal numbers_cThe position index sequence in different decimal numbers is used as a sub-band frequency hopping base sequence of the public data; wherein N is_cThe number of the sub-bands in the transmission region of the public data is the number of the sub-bands in the transmission region of the public data;

n to be generated_uOrdering the different decimal numbers according to a second preset rule, and ordering the N_uN before sorting of different decimal numbers_uPosition index sequences in different decimal numbers are used as sub-band frequency hopping base sequences of the uplink/downlink unicast data; wherein N is_uThe number of sub-bands in the transmission region of the uplink/downlink unicast data.

Preferably, the generating N in sequence according to the pseudo-random sequence_cA and N_uThe different decimal numbers include:

extracting (K1-1) th K2+1 to K1K2 continuous bits from the generated pseudo-random sequence, and converting the extracted (K1-1) th K2+1 to K1K2 continuous bits into corresponding decimal numbers; discarding the extracted (K1-1) th K2+1 through K1K2 consecutive bits if the extracted (K1-1) th K2+1 through K1K2 consecutive bits are the same as the extracted (K3-1) th K2+1 through K3K2 consecutive bits; if not, converting the extracted (K1-1) th K2+1 to K1K2 continuous bits into corresponding bitsA decimal number; continuing the step of extracting successive bits until N is obtained_cA number of different decimal numbers;

using the generated pseudo-random sequence to generate N_cGenerating a new pseudo-random sequence by deleting bits of different decimal numbers, and generating N according to the new pseudo-random sequence_uA number of different decimal numbers; where K1 takes on values in an incremental manner starting from 1, 1<K3<K1, K2 are the number of consecutive bits extracted.

Preferably, the public data is a system information block SIB message, or a random access response, RAR, message, or a Paging message.

Preferably, the sub-band hopping sequence of the SIB message, the sub-band hopping sequence of the RAR message, and the sub-band hopping sequence of the Paging message are different from each other and have a certain relative offset.

Preferably, the acquiring the sub-band hopping sequence of the data according to the obtained sub-band hopping base sequence includes:

according to the formula

Acquiring a sub-band frequency hopping sequence of the SIB message;

wherein, { S_sib,0,S_sib,1,…,S_sib,Nc-1Is the subband hopping sequence of the SIB message, { b_c,0,b_c,1,…,b_c,Nc-1Is the subband hopping base sequence of the public data, O_sibDetermining a bias for the sub-band hopping sequence of the SIB message relative to the sub-band hopping base sequence of the public data;

according to the formula

Acquiring a sub-band frequency hopping sequence of the RAR message;

wherein, { S_rar,0,S_rar,1,…,S_rar,Nc-1Is the subband hopping sequence of the RAR message, { b_c,0,b_c,1,…,b_c,Nc-1Is the subband hopping base sequence of the public data, O_rarDetermining the bias of the sub-band frequency hopping sequence of the RAR message relative to the sub-band frequency hopping base sequence of the public data;

according to the formula

Acquiring a sub-band frequency hopping sequence of the Paging message;

wherein, { S_Paging,0,S_Paging,1,…,S_Paging,Nc-1Is the subband hopping sequence of the Paging message, { b_c,0,b_c,1,…,b_c,Nc-1Is the subband hopping base sequence of the public data, O_PagingDetermining a bias for the sub-band hopping sequence of the Paging message relative to the sub-band hopping base sequence of the public data;

wherein, O_sib、O_rarAnd O_pagingGreater than or equal to 0 and less than N_cAnd O is_sib、O_rarAnd O_pagingThe values are different from each other.

according to the formula

Acquiring a sub-band frequency hopping sequence of the uplink/downlink unicast data;

wherein, { S_u,0,S_u,1,…,S_u,Nu-1The sub-band frequency hopping sequence of the uplink/downlink unicast data is defined as { b }_u,0,b_u,1,…,b_u,Nu-1Is the sub-band hopping base sequence of the uplink/downlink unicast data, O_ueA dedicated bias for the UE.

Preferably, the determining, by the base station or the UE, the sub-band for transmitting data according to the obtained sub-band hopping sequence includes:

determining a sub-band for transmitting data in a transmission region of the data in an ith time interval according to an ith element in the sub-band frequency hopping sequence of the data;

when the data is public data, the i is 1 to N_cA positive integer of (d); when the data is uplink/downlink unicast data, the i is 1 to N_uA positive integer of (d); wherein, the N is_cIs the number of sub-bands in the transmission region of the public data, N_uThe number of sub-bands in the transmission region of the uplink/downlink unicast data.

Preferably, the size of the time interval is one or more slots, or one or more radio frames, or one or more subframes.

Preferably, the transmitting data on the determined sub-band comprises: and transmitting the uplink/downlink unicast data on the determined sub-band by adopting a repeated transmission mechanism.

Preferably, the base station or the UE transmits repeatedly transmitted uplink/downlink unicast data from a first subframe of a first time interval.

Preferably, the size of the time interval and/or the size of the determined sub-band are determined according to the maximum number of repeated transmissions or the actual number of repeated transmissions of the uplink/downlink unicast data.

Preferably, the uplink unicast data includes: uplink unicast service data and uplink unicast control data;

the uplink unicast control data includes: scheduling request SR, hybrid automatic repeat request acknowledgement HARQ-ACK and channel state information.

Preferably, the transmitting data on the determined sub-band comprises:

and transmitting the uplink unicast control data on a fixed Physical Resource Block (PRB) of the determined sub-band for transmitting the uplink unicast data, and transmitting the uplink unicast service data on other PRBs except the fixed PRB.

Preferably, when it is determined that the determined sub-band of the transmission data is preset or configured to be unavailable, the sub-band of the transmission data is determined to be an additionally available sub-band.

The invention also provides a device for transmitting data, which at least comprises:

the acquisition module is used for acquiring a sub-band frequency hopping sequence of the data;

the determining module is used for determining the sub-band for transmitting data according to the obtained sub-band frequency hopping sequence;

a transmission module, configured to transmit data on the determined sub-band;

where different types of data have different subband hopping sequences.

Preferably, the obtaining module is further configured to:

acquiring a transmission area of the data;

the determining module is specifically configured to:

and determining the sub-band for transmitting data in the transmission region according to the obtained sub-band frequency hopping sequence.

Preferably, the obtaining module is specifically configured to:

and acquiring the transmission area of the public data in a predefined mode, and acquiring the transmission area of the uplink/downlink unicast data in a predefined mode or a broadcast signaling or a special signaling.

Preferably, the broadcast signaling or the proprietary signaling includes at least: a field indicating the number of subbands included in a transmission region of the uplink/downlink unicast data; and a field indicating positions of all sub-bands in a transmission region of the uplink/downlink unicast data;

the acquisition module is further configured to:

according to the formula

Preferably, the obtaining module is specifically configured to:

acquiring a sub-band frequency hopping base sequence of the data according to the number of sub-bands in the data transmission region and the cell identification; and acquiring the sub-band frequency hopping sequence of the data according to the acquired sub-band frequency hopping base sequence.

Preferably, the obtaining module is further configured to:

extracting (K1-1) th K2+1 to K1K2 continuous bits from the generated pseudo-random sequence, and converting the extracted (K1-1) th K2+1 to K1K2 continuous bits into corresponding decimal numbers; discarding the extracted (K1-1) th K2+1 through K1K2 consecutive bits if the extracted (K1-1) th K2+1 through K1K2 consecutive bits are the same as the extracted (K3-1) th K2+1 through K3K2 consecutive bits; if not, converting the extracted (K1-1) th K2+1 to K1K2 continuous bits into corresponding decimalCounting; continuing the step of extracting successive bits until N is obtained_cA number of different decimal numbers;

Preferably, the obtaining module is further configured to:

according to the formula

Acquiring a sub-band frequency hopping sequence of the SIB message;

according to the formula

Acquiring a sub-band frequency hopping sequence of the RAR message;

according to the formula

Acquiring a sub-band frequency hopping sequence of the Paging message;

Preferably, the obtaining module is further configured to:

according to the formula

wherein, { S_u,0,S_u,1,…,S_u,Nu-1The sub-band frequency hopping sequence of the uplink/downlink unicast data is defined as { b }_u,0,b_u,1,…,b_u,Nu-1Is the sub-band hopping base sequence of the uplink/downlink unicast data, O_ueIs a UE specific bias.

Preferably, the determining module is further configured to:

Preferably, the data is public data or uplink/downlink unicast data; the uplink unicast data includes: uplink unicast service data and uplink unicast control data;

the transmission module is specifically configured to:

and transmitting the uplink unicast control data on a fixed Physical Resource Block (PRB) of the determined sub-band for transmitting the uplink unicast data, and transmitting the uplink unicast service data on other PRBs of the determined sub-band for transmitting the uplink unicast data.

Preferably, the determining module is further configured to:

and judging that the determined sub-band for transmitting the data is preset or configured to be unavailable, and determining the sub-band for transmitting the data as an additionally available sub-band.

Compared with the prior art, the invention comprises the following steps: a base station or a user terminal UE acquires a sub-band frequency hopping sequence of data; the base station or the UE determines a sub-band for transmitting data according to the obtained sub-band frequency hopping sequence, and transmits the data on the determined sub-band; where different types of data have different subband hopping sequences. By the scheme of the invention, the sub-band for transmitting data is determined according to the obtained sub-band frequency hopping sequence, so that the frequency hopping transmission of different types of data is realized, and the data transmission performance is improved.

Drawings

The accompanying drawings in the embodiments of the present invention are described below, and the drawings in the embodiments are provided for further understanding of the present invention, and together with the description serve to explain the present invention without limiting the scope of the present invention.

FIG. 1 is a flow chart of a method of transmitting data in accordance with the present invention;

FIG. 2 is a schematic diagram of a transmission area;

fig. 3 is a schematic diagram of a transmission region where public data and downlink unicast data use no overlap;

fig. 4 is a schematic diagram illustrating a resource mapping manner of public data in a transmission region of public data and a resource mapping manner of downlink unicast data in a transmission region of downlink unicast data are different;

fig. 5 is a schematic diagram of an uplink/downlink unicast data transmission region specific to a low-cost MTC UE with both transmission bandwidth reduction and coverage enhancement requirements;

fig. 6 is a schematic diagram of fixed PRBs occupied by uplink unicast control data;

FIG. 7 is a diagram illustrating the positions of sub-bands for transmitting different public data according to the first embodiment;

fig. 8 is a diagram illustrating sub-band positions for transmitting uplink/downlink unicast data according to the second embodiment;

fig. 9 is a diagram illustrating a starting subframe position of uplink/downlink unicast data for restricting repeated transmission by MTC UEs with requirements of reduced transmission bandwidth and enhanced coverage according to the third embodiment;

FIG. 10 is a diagram illustrating the special sub-band positions of the low-cost MTC UE common data transmission that is not applicable for transmission bandwidth reduction according to the fourth embodiment;

fig. 11 is a schematic structural diagram of an apparatus for transmitting data according to the present invention.

Detailed Description

The following further description of the present invention, in order to facilitate understanding of those skilled in the art, is provided in conjunction with the accompanying drawings and is not intended to limit the scope of the present invention. In the present application, the embodiments and various aspects of the embodiments may be combined with each other without conflict.

Referring to fig. 1, the present invention provides a method for transmitting (including transmitting or receiving) data, including:

step 100, a base station or UE acquires a sub-band frequency hopping sequence of data; where different types of data have different subband hopping sequences.

In this step, the UE may be a low-cost MTC UE with reduced transmission bandwidth, or a non-low-cost MTC UE with no reduction in transmission bandwidth but with a coverage enhancement requirement.

Wherein the low-cost MTC UE with reduced transmission bandwidth may be a low-cost MTC UE with only a requirement for reduction of transmission bandwidth, or a low-cost mtue with both requirements for reduction of transmission bandwidth and coverage enhancement.

In this step, the data is public data or uplink/downlink unicast data, and different types of data having different subband hopping sequences include: the subband hopping sequence for the public data is different from the subband hopping sequence for the uplink/downlink unicast data.

Wherein the uplink unicast data comprises: uplink unicast service data and uplink unicast control data. The uplink unicast control data includes a Scheduling Request (SR), a Hybrid Automatic Repeat Request Acknowledgement (HARQ-ACK), and channel state information.

In this step, the sub-band refers to a sub-band for transmitting data after the scheduler schedules the data, and the scheduler usually does not schedule the data all the time due to system control overhead and/or uplink/downlink unicast service requirements, so the sub-band can be said to be a potential sub-band for transmitting data.

In this step, a transmission area of the data is also acquired.

Wherein the transmission region of data comprises one or more sub-bands, wherein each sub-band occupies one or more Physical Resource Blocks (PRBs).

The transmission area may be a continuous area or a discrete area. For example, fig. 2 is a schematic diagram of a transmission region, and as shown in fig. 2, the transmission region of the uplink/downlink unicast data of the first UE is 5 continuous sub-bands, and the transmission region of the uplink/downlink unicast data of the second UE is 4 discrete sub-bands.

The transmission areas of the public data and the downlink unicast data are not overlapped, or the resource mapping mode of the public data in the transmission area of the public data is different from the resource mapping mode of the downlink unicast data in the transmission area of the downlink unicast data.

Wherein, the non-overlapping of the transmission areas of the public data and the downlink unicast data comprises: the transmission areas of the downlink unicast data are two sides of the system bandwidth, and the transmission areas of the public data are other areas except the transmission areas of the downlink unicast data in the system bandwidth.

The resource mapping mode of the public data in the transmission region of the public data and the resource mapping mode of the downlink unicast data in the transmission region of the downlink unicast data are different, and the resource mapping mode comprises the following steps: the common data is mapped from the lowest-indexed PRB position in the subband of the transmission region of the common data, and the downlink unicast data is mapped from the highest-indexed PRB position in the subband of the transmission region of the downlink unicast data. When the public data conflicts with the downlink unicast data, if the priority of the public data is higher than that of the downlink unicast data, the sub-band with the conflict is used for transmitting the public data; if the priority of the public data is lower than that of the downlink unicast data, the sub-bands with conflict are used for transmitting the downlink unicast data. The fact that the common data and the downlink unicast data have conflict means that the sum of the number of PRBs used for transmitting the common data and the number of PRBs used for transmitting the downlink unicast data in the same subband is larger than the number of PRBs contained in the subband.

The priority of the public data and the priority of the downlink unicast data may be preset or determined according to specific situations (that is, may be determined by the base station).

For example, for a low-cost MTC UE with reduced transmission bandwidth, in order to avoid or mitigate collisions between the public data and the downlink unicast data, there may be no overlap between the transmission regions of the public data and the downlink unicast data. Specifically, all the transmission areas of the downlink unicast data can be concentrated on two sides of the system bandwidth, and the other areas except the transmission area of the downlink unicast data are the transmission areas of the public data. The method can completely avoid the conflict between the public data and the downlink unicast data. For example, fig. 3 is a schematic diagram of a transmission region where common data and downlink unicast data use no overlap, and as shown in fig. 3, the transmission region of the downlink unicast data is set to be 4 subbands located at two sides of the system bandwidth, and the other regions except for the 4 subbands are transmission regions of the common data.

The resource mapping mode of the public data in the transmission region of the public data may be different from the resource mapping mode of the downlink unicast data in the transmission region of the downlink unicast data. Specifically, the public data may be mapped from the lowest indexed PRB position in the subband of the transmission region of the public data, and the downlink unicast data may be mapped from the highest indexed PRB position in the subband of the transmission region of the downlink unicast data; when the public data and the downlink unicast data conflict, the sub-band with the conflict is used for transmitting the data with high priority according to the preset priority or the priority determined according to the specific situation. Specifically, if the priority of the public data is higher than that of the downlink unicast data, the sub-band with the conflict is used for transmitting the public data; if the priority of the public data is lower than that of the downlink unicast data, the sub-bands with conflict are used for transmitting the downlink unicast data. The method is favorable for reducing the conflict between the public data and the downlink unicast data when the transmission areas of the public data and the downlink unicast data are overlapped, and is favorable for improving the utilization efficiency of resources. For example, fig. 4 is a schematic diagram illustrating that the resource mapping manner of the public data in the transmission region of the public data is different from the resource mapping manner of the downlink unicast data in the transmission region of the downlink unicast data, and as shown in fig. 4, in a subband including 6 PRBs in one subframe, in the transmission region of the public data, the public data is mapped from the position of the PRB with index 0 and occupies 3 PRBs, and in the transmission region of the downlink unicast data, the downlink unicast data is mapped from the position of the PRB with index 5 and occupies 2 PRB resources.

Wherein, the transmission area for the base station or the UE to acquire data includes: the method comprises the steps of obtaining a transmission area of public data in a predefined mode, and obtaining a transmission area of uplink/downlink unicast data in a predefined mode or broadcast signaling or proprietary signaling.

When the transmission region of the uplink/downlink unicast data is acquired through the broadcast signaling, different types of UEs may acquire the transmission region of the uplink/downlink unicast data through different broadcast signaling.

The broadcast signaling is Master Information Block (MIB) signaling or System Information Block (SIB) signaling.

Specifically, before the UE accesses the system, the UE may acquire a transmission region of uplink/downlink unicast data through broadcast signaling from the base station. After the UE accesses the system, the UE can adjust the transmission area of uplink/downlink unicast data of the UE through the special signaling from the base station. I.e. MIB signaling or SIB signaling with proprietary signaling priority over broadcast nature. The UE adjusts the transmission area of uplink/downlink unicast data of the UE through the special signaling after accessing the system, thereby being beneficial to timely adjusting and lightening the potential influence on data transmission of other UEs.

For example, as shown in fig. 2, the transmission region for uplink/downlink unicast data configured by the first UE through the dedicated signaling includes the first 5 sub-bands in the system bandwidth, and the transmission region for uplink/downlink unicast data configured by the second UE includes 4 sub-bands located on both sides of the system bandwidth. Wherein, if the transmission region of the uplink/downlink unicast data indicated by the dedicated signaling includes only one sub-band, it means that the UE always transmits its uplink/downlink unicast data using the fixed sub-band.

Wherein the broadcast signaling or the proprietary signaling at least comprises: a field indicating the number of subbands included in a transmission region of the uplink/downlink unicast data; and a field indicating positions of all sub-bands in a transmission region of the uplink/downlink unicast data.

Wherein the field indicating the positions of all the subbands in the transmission region may be a value calculated according to formula (1).

Wherein k is more than or equal to 1_i≤N_total，k_i<k_i+1，v_uA specific value of a field indicating the positions of all sub-bands in a transmission region of uplink/downlink unicast data; n is a radical of_uThe number of sub-bands in the transmission region of the uplink/downlink unicast data; n is a radical of_totalIs the total number of usable subbands in the system bandwidth; k is a radical of_iIs N_uThe ith sub-band of the sub-bands is at N_totalIndices in each subband (counting from 1).

When the UE acquires N by receiving broadcast signaling or proprietary signaling from the base station_uAnd v_uUE can then be according to N_uAnd v_uObtaining N by existing methods (e.g. table look-up)_uThe position of the individual sub-bands.

For the low-cost MTC UE with reduced transmission bandwidth, a special uplink/downlink unicast data transmission area can be set for the low-cost MTC UE with the requirements of transmission bandwidth reduction and coverage enhancement at the same time in a predefined mode or through a broadcast signaling or a special signaling; the broadcast signaling includes MIB signaling or SIB signaling.

When the low-cost MTC UE with reduced transmission bandwidth and the low-cost MTC UE with the requirements of reduced transmission bandwidth and enhanced coverage coexist, the method can realize the mutual isolation of uplink/downlink unicast data of the two UE types from available physical resources, thereby achieving the purpose of further avoiding or reducing the mutual influence between the two UE types. For example, fig. 5 is a schematic diagram of an uplink/downlink unicast data transmission region dedicated to a low-cost MTC UE with both requirements of transmission bandwidth reduction and coverage enhancement, as shown in fig. 5, the last 2 subbands in the system bandwidth range are exclusively used as uplink/downlink unicast data transmission regions of a low-cost MTC UE with both requirements of transmission bandwidth reduction and coverage enhancement, and other regions except the above 2 subbands are used as uplink/downlink unicast data transmission regions of a low-cost MTC UE with both requirements of common data and transmission bandwidth reduction.

In this step, the sub-band hopping sequence for the base station or the UE to acquire data includes: a base station or UE acquires a sub-band frequency hopping base sequence of data according to the number of sub-bands and cell identification in a data transmission region; and acquiring the sub-band frequency hopping sequence of the data according to the acquired sub-band frequency hopping base sequence. The length of the subband hopping base sequence or the subband hopping sequence of the data can be the number of subbands in a transmission region of the data, and is represented by random ordering of N integers with the numbers of 0 to (N-1); n is the number of subbands in the transmission region of the data.

The base station or the UE obtains the subband hopping base sequence of the data according to the subband number and the cell identifier in the data transmission region, including: generating a pseudo-random sequence according to the cell identifier; acquiring a sub-band frequency hopping base sequence of the data according to the generated pseudo-random sequence; wherein the subband hopping base sequences of the obtained different types of data are different. Specifically, the subband hopping base sequence of the public data may be different from the subband hopping base sequence of the uplink/downlink unicast data.

The method can generate a Gold sequence c (n) with a sufficient length according to a cell identifier based on a pseudo-random sequence generation mechanism of the existing LTE standard. Specifically, the calculation can be performed by using formula (2).

c(n)＝(x₀(n+1600)+x₁(n+1600))mod2

x₀(n+31)＝(x₀(n+3)+x₀(n))mod2 (2)

x₁(n+31)＝(x₁(n+3)+x₁(n+2)+x₁(n+1)+x₁(n))mod2

Wherein, the 1 st m sequence x₀(n) with x₀(0) 1 and x₀Initialization with (n) ═ 0(n ═ 1,2, …,30), the 2 nd m-sequence x₁(n) is initialized according to equation (3).

The cellid is a cell identifier (i.e., a cell identifier of a cell in which the UE is located).

The acquiring of the sub-band hopping base sequence of the data according to the generated pseudo-random sequence comprises the following steps:

sequentially generating N from a pseudorandom sequence_cA and N_uA number of different decimal numbers; n to be generated_cThe different decimal numbers are sorted according to a first preset rule (such as from small to large or from large to small), and the sorted N is_cN before sorting of different decimal numbers_cThe position index sequence in different decimal numbers is used as the subband frequency hopping base sequence of the common data. Wherein N is_cThe number of sub-bands in the transmission region for public data;

n to be generated_uThe different decimal numbers are sorted according to a second preset rule (such as from small to large or from large to small), and the sorted N is_uN before sorting of different decimal numbers_uThe position index sequence in different decimal numbers is used as the sub-band frequency hopping base sequence of the uplink/downlink unicast data.

Wherein N is sequentially generated from a pseudorandom sequence_cA and N_uThe different decimal numbers include:

extracting (K1-1) th K2+1 to K1K2 consecutive bits from the generated pseudo random sequence, and extracting the extracted (K1-1) th bit(K1-1) K2+1 to K1K2 consecutive bits are converted into corresponding decimal numbers; discarding the extracted (K1-1) th K2+1 through K1K2 consecutive bits if the extracted (K1-1) th K2+1 through K1K2 consecutive bits are the same as the extracted (K3-1) th K2+1 through K3K2 consecutive bits; if not, converting the extracted (K1-1) K2+1 to K1K2 continuous bits into corresponding decimal numbers; continuing the step of extracting successive bits until N is obtained_cA number of different decimal numbers;

using pseudo-random sequence for generating N_cGenerating a new pseudo-random sequence by deleting bits of different decimal numbers, and generating N according to the method based on the new pseudo-random sequence_uA number of different decimal numbers; where K1 takes on values in an incremental manner starting from 1, 1<K3<K1, K2 are the number of consecutive bits extracted.

For example, the length of the random sequence c (N) is sufficiently long, assuming K2 is 10, N_cIs 10, N _u6, then the 1 st decimal number corresponds to bits c (0) to c (9) and the 2 nd decimal number corresponds to bits c (10) to c (19); wherein, if the bits c (10) to c (19) are identical to the bits c (0) to c (9), the bits c (10) to c (19) are discarded and the 2 nd decimal number is adjusted to correspond again to the bits c (20) to c (29); and so on; obtaining decimal numbers according to the mode until 10 different decimal numbers are generated; the bits of the sequence c (n) that have been used to generate 10 different decimal numbers are then removed to obtain a new sequence c (n), and 6 different decimal numbers are regenerated again in the manner described above.

If 10 different decimal numbers are generated and specifically: {29,294,10,295,97,50,7,456,52,27}, the decimal numbers ordered from small to large are: {7,10,27,29,50,52,97,294,295,456}, Table 1 shows the mapping between the position indices before and after sorting for all decimal numbers. As shown in table 1, the subband hopping motif sequence for the public data is: {3,7,1,8,6,4,0,9,5,2}.

Position index before sorting	0	1	2	3	4	5	6	7	8	9
											Sorted position index	3	7	1	8	6	4	0	9	5	2

TABLE 1

The method for acquiring the sub-band frequency hopping base sequence of the data is beneficial to ensuring that the sub-band frequency hopping base sequences of the public data and the downlink unicast data are different when the transmission areas of the public data and the downlink unicast data are the same.

In the existing LTE system, the public data is SIB messages, Random Access Response (RAR) messages, or Paging messages.

The sub-band frequency hopping sequence of the SIB message, the sub-band frequency hopping sequence of the RAR message and the sub-band frequency hopping sequence of the Page message are different from each other and have a certain relative offset.

Wherein having a determined relative offset means: there is more than 0 and less than N_cAnd satisfies the equation

Positive integer of (1)_x,yWherein, in_x,0,S_x,1,…,S_x,Nc-1And { S }_y,0,S_y,1,…,S_y,Nc-1Respectively carrying out any two sequences of the sub-band frequency hopping sequence of the SIB message, the sub-band frequency hopping sequence of the RAR message and the sub-band frequency hopping sequence of the Paging message.

The acquiring the sub-band frequency hopping sequence of the data according to the obtained sub-band frequency hopping base sequence comprises the following steps:

the subband hopping sequence of the SIB message is acquired according to equation (4).

Wherein, { S_sib,0,S_sib,1,…,S_sib,Nc-1Is the subband hopping sequence of SIB messages, { b_c,0,b_c,1,…,b_c,Nc-1O subband hopping base sequence of public data_sibThe determined offset for the sub-band hopping sequence of the SIB message relative to the sub-band hopping base sequence of the public data.

And acquiring the sub-band frequency hopping sequence of the RAR message according to the formula (5).

Wherein, { S_rar,0,S_rar,1,…,S_rar,Nc-1Is the subband hopping sequence of the RAR message, O_rarThe determined offset of the sub-band hopping sequence of the RAR message relative to the sub-band hopping base sequence of the public data is used.

And acquiring the sub-band frequency hopping sequence of the Paging message according to the formula (6).

Wherein, { S_Paging,0,S_Paging,1,…,S_Paging,Nc-1Is the subband hopping sequence of the Paging message, O_PagingThe determined offset for the subband hopping sequence of the Paging message relative to the subband hopping base sequence of the public data.

By adopting the method for acquiring the subband frequency hopping sequence of the public data, different public data can be transmitted by adopting different subbands, so that the overlapping of the subbands for transmitting different public data in the same subframe is avoided.

and acquiring a sub-band frequency hopping sequence of the uplink/downlink unicast data according to a formula (7).

Wherein, { S_u,0,S_u,1,…,S_u,Nu-1The sub-band frequency hopping sequence of the uplink/downlink unicast data, { b_u,0,b_u,1,…,b_u,Nu-1Is a subband hopping base sequence of uplink/downlink unicast data, O_ueIs a UE specific bias.

For low-cost MTC UE types with reduced transmission bandwidth, the sub-band for transmitting data is a narrow band, and the dedicated offset may be a UE identity.

For a non-low-cost MTC UE with no reduction in transmission bandwidth but with a coverage enhancement requirement, the UE may obtain a dedicated bias through a dedicated signaling from the base station, where the dedicated signaling is a field in dedicated Downlink Control Information (DCI).

For the low-cost MTC UE with reduced transmission bandwidth, due to the limitation of transmission bandwidth, the UE generally cannot receive the dedicated DCI information transmitted in the full bandwidth range in real time before receiving the uplink/downlink unicast data, and thus cannot adjust the sub-band frequency hopping sequence of the uplink/downlink unicast data in real time through the dedicated DCI information, so that it is advisable to limit the dedicated bias to the UE identifier. For the non-low-cost MTC UE with the transmission bandwidth not reduced but with the coverage enhancement requirement, due to no limitation of the transmission bandwidth, the UE can receive the special DCI information transmitted in the full bandwidth range in real time before receiving the uplink/downlink unicast data, so that the sub-band frequency hopping sequence of the uplink/downlink unicast data can be adjusted in real time through the special DCI information to obtain more scheduling flexibility or scheduling gain.

The method for acquiring the sub-band frequency hopping sequence of the data avoids or alleviates potential conflicts existing when different UEs transmit uplink/downlink unicast data.

Step 101, the base station or the UE determines a sub-band for transmitting (transmitting or receiving) data according to the obtained sub-band hopping sequence, and transmits (transmits or receives) data on the determined sub-band.

In this step, the determining, by the base station or the UE, the sub-band for transmitting data according to the obtained sub-band hopping sequence includes: and the base station or the UE determines the sub-band for transmitting data in the obtained transmission region according to the obtained sub-band frequency hopping sequence.

In this step, the determining, by the base station or the UE, the sub-band for transmitting data according to the obtained sub-band hopping sequence includes:

and determining the sub-band for transmitting the data in the data transmission region in the ith time interval according to the ith element in the sub-band frequency hopping sequence of the data.

When the data is public data, i takes 1 to N_cA positive integer of (d); when the data is the uplink/downlink unicast data, i is 1 to N_uIs a positive integer of (1). Wherein N is_cNumber of sub-bands in transmission region for public data, N_uIs the number of sub-bands in the transmission region of the uplink/downlink unicast data. That is, in successive N_cIn each time interval, the sub-band for transmitting the common data in the common data transmission region is N included by the frequency hopping sequence of the sub-band for transmitting the common data_cThe elements are indicated one by one; and, in the successive N_uIn each time interval, the sub-band for transmitting the uplink/downlink unicast data in the transmission region of the uplink/downlink unicast data is N included by the sub-band frequency hopping sequence of the uplink/downlink unicast data_uThe individual elements are indicated one by one.

The size of the time interval may be one or more slots, or one or more radio frames, or one or more subframes (e.g., 2 or 4 subframes). The size of the time interval is also referred to as the subband hopping granularity.

Wherein transmitting data on the determined sub-band comprises: and transmitting the uplink/downlink unicast data on the determined sub-band by adopting a repeated transmission mechanism.

Wherein the base station or the UE may start from the first time interval (i.e. every consecutive N)_uThe first one of the time intervals) starts to transmit repeatedly transmitted uplink/downlink unicast data.

Wherein all UEs may have the same or different time interval sizes and subband sizes.

The size of the time interval and/or the size of the determined sub-band may be determined according to the maximum number of repeated transmissions or the actual number of repeated transmissions of the uplink/downlink unicast data. Specifically, the maximum number of repeated transmissions of the uplink/downlink unicast data may refer to the maximum number of repeated transmissions of the uplink/downlink unicast data supported by the system, or may refer to the maximum number of repeated transmissions of the uplink/downlink unicast data supported by the UE itself. The final effect of the method can be as follows: when the maximum number of repeated transmissions or the actual number of repeated transmissions is large, a large time interval (but not exceeding the size of the maximum time interval supported by the system or the UE) may be set, and a small sub-band (but not below the size of the minimum sub-band supported by the system or the UE) may be set. According to the maximum repeated transmission times of uplink/downlink unicast data supported by the system, the size of the time interval and/or the size of the sub-band are determined, so that all the UE can share the same size of the time interval and/or the size of the sub-band, and resource collision or conflict among different UE can be avoided and alleviated.

For low-cost MTC UEs with both reduced transmission bandwidth and coverage enhancement requirements, or non-low-cost MTC UEs with no reduced transmission bandwidth but with coverage enhancement requirements, to implement coverage enhancement, a repeated transmission mechanism may be used to transmit uplink/downlink unicast data. In addition, in order to balance the joint channel estimation and the frequency diversity gain to reduce the number of repetitions as much as possible, the size of the time interval is usually taken to be a plurality of subframes.

For the low-cost MTC UE with reduced transmission bandwidth, after setting a dedicated uplink/downlink unicast data transmission region for the low-cost MTC UE with both reduced transmission bandwidth and enhanced coverage, the repeatedly transmitted uplink/downlink unicast data of the UE may be transmitted from the first subframe of the first time interval (i.e. the first time region in each consecutive Nu time intervals). This approach avoids or mitigates potential collisions for different UEs while reducing the complexity of the scheduler.

For the low-cost MTC UE with reduced transmission bandwidth, after setting a dedicated uplink/downlink unicast data transmission region for the low-cost MTC UE with both reduced transmission bandwidth and enhanced coverage, the size of the time interval may be different from the size of the time interval of the MTC UE with only reduced transmission bandwidth for obtaining the joint channel estimation gain under repeated transmission.

For low-cost MTC UE with the requirements of reducing transmission bandwidth and enhancing coverage, only determining the size of a time interval shared by all UE (sub-band size is always equal to the size of a fixed narrow band) according to the maximum repeated transmission times of uplink/downlink unicast data supported by a system; or, only the size of the time interval exclusive to the UE is determined according to the number of times of repeated transmission of uplink/downlink unicast data actually adopted by the UE (the size of the sub-band is always equal to the size of the fixed narrow band).

Determining the size of a time interval and/or the size of a sub-band shared by all UEs according to the maximum repeated transmission times of uplink/downlink unicast data supported by a system for non-low-cost MTCCEs with the requirements on coverage enhancement and without reduction of transmission bandwidth; or, the time interval size and/or the sub-band size specific to each UE is determined according to the specific repeated transmission times of the uplink/downlink unicast data actually adopted by the UE.

For the low-cost MTC UE type with reduced transmission bandwidth, considering that the MTC UE type can simultaneously receive at most one sub-band, when downlink unicast data of the MTC UE type is simultaneously transmitted with at least one public data and is positioned in a sub-band different from the public data, the MTC UE type selects at most one of all public data or selects the downlink unicast data for receiving according to self needs.

In this step, when it is determined that the determined sub-band for transmitting data is preset or configured to be unavailable (for example, a sub-band in which most of the resources in the downlink sub-frame 0 have been used for transmission of the synchronization signal and/or the MIB signaling), the sub-band for transmitting data is determined to be an additional available sub-band. Wherein the additional usable subband may be a 1 st usable subband located after the unavailable subband that is not used for other data transmission. The method ensures that the data can be normally transmitted under the condition that the sub-band of the transmission data acquired according to the sub-band frequency hopping sequence can not be used to a certain extent. It should be noted that the term "after … …" as used herein should be of a cyclic nature; for example, considering 10 subbands numbered 0 to 9, taking subband number 4 as an example, the subbands following subband number 4 may be in turn: the subbands numbered 5,6,7,8,9,0,1,2, and 3.

In this step, transmitting data on the determined sub-band includes: and transmitting uplink unicast control data on the fixed PRB of the determined sub-band for transmitting the uplink unicast data, and transmitting uplink unicast service data on other PRBs except the fixed PRB.

For example, fig. 6 is a schematic diagram of the uplink unicast control data occupying fixed PRBs, and as shown in fig. 6, in one subframe, a subband used for transmitting the uplink unicast data includes 6 PRB resources, and a PRB with an index of 0 is used for transmitting the uplink unicast control data, that is, if the uplink unicast control data is to be transmitted using the subband, the PRB with the index of 0 in the subband is fixedly used for transmission. In order to increase the control data capacity, uplink unicast control data from different UEs may be multiplexed in the same fixed PRB resource by using the allocated orthogonal code or orthogonal sequence.

The method ensures the communication requirements of the low-cost MTC UE with reduced transmission bandwidth or the non-low-cost MTC UE with the transmission bandwidth not reduced but with the coverage enhancement requirement, obtains larger frequency diversity gain, and simultaneously avoids or lightens the mutual influence of data transmission between the low-cost MTC UE with the transmission bandwidth reduction requirement and the low-cost MTC UE with the transmission bandwidth reduction and the coverage enhancement requirement and between different data types, thereby improving the data transmission performance.

The method of the present invention will be described in detail below with reference to specific examples.

First embodiment, it is assumed that the transmission region of the public data includes 10 (N)_c10) subbands, the subband hopping motif sequence of the public data is: {3,7,1,8,6,4,0,9,5,2 }; offset O of sub-band hopping sequence of SIB message from public data sub-band hopping base sequence _sib0, offset O of sub-band hopping sequence of RAR message relative to public data sub-band hopping base sequence_rarTo 1, the offset O of the subband hopping sequence of the Paging message to the public data subband hopping base sequence_pagingIs 2.

The sub-band hopping sequence of SIB is {3,7,1,8,6,4,0,9,5,2 }; the sub-band hopping sequence of the RAR message is as follows: ({3,7,1,8,6,4,0,9,5,2} +1) mod10 ═ 4,8,2,9,7,5,1,0,6,3 }; the subband hopping sequence of the Paging message is: ({3,7,1,8,6,4,0,9,5,2} +2) mod10 ═ 5,9,3,0,8,6,2,1,7,4 }.

In 10 continuous time intervals, the sub-band for transmitting the SIB message in the public data transmission area is determined by 10 elements in the sub-band frequency hopping sequence of the SIB message one by one; the sub-band for transmitting the RAR message in the public data transmission region is determined by 10 elements included in the sub-band frequency hopping sequence of the RAR message one by one; and the sub-band for transmitting the Paging message in the public data transmission region is determined one by 10 elements included in the sub-band hopping sequence of the Paging message.

For example, fig. 7 is a schematic diagram of the positions of the sub-bands for transmitting different public data according to the first embodiment, as shown in fig. 7, in the 1 st time interval, the sub-band for transmitting the SIB message is the sub-band numbered 3, the sub-band for transmitting the RAR message is the sub-band numbered 4, and the sub-band for transmitting the Paging message is the sub-band numbered 5; in the 4 th time interval, the sub-band transmitting the SIB message is the sub-band numbered 8, the sub-band transmitting the RAR message is the sub-band numbered 9, and the sub-band transmitting the Paging message is the sub-band numbered 0.

When 2 or 3 of SIB, RAR and Paging messages are transmitted simultaneously, the low-cost MTC UE with reduced corresponding transmission bandwidth selects at most one of the messages to receive according to the need of the MTC UE.

The method ensures that different common data are always positioned in different sub-bands, thereby avoiding the overlapping of the sub-bands for transmitting different common data in the same sub-frame.

In the second embodiment, it is assumed that the transmission region of the uplink/downlink unicast data includes 10(Nu ═ 10) subbands, and the subband hopping sequence of the uplink/downlink unicast data is: {1,6,9,0,4,8,5,2,7,3 }; the proprietary bias is 3.

The sub-band hopping sequence of the uplink/downlink unicast data is as follows: ({1,6,9,0,4,8,5,2,7,3} +3) mod10 ═ 4,9,2,3,7,1,8,5,0,6 }.

In 10 continuous time intervals, the sub-band for transmitting the uplink/downlink unicast data in the uplink/downlink unicast data transmission region is determined by 10 elements included in the sub-band frequency hopping sequence of the uplink/downlink unicast data one by one.

For example, fig. 8 is a schematic diagram of the positions of the sub-bands for transmitting uplink/downlink unicast data according to the second embodiment, and as shown in fig. 8, in the 1 st time interval, the sub-band for transmitting uplink/downlink unicast data is the sub-band numbered 4; in the 5 th time interval, the sub-band for transmitting the uplink/downlink unicast data is the sub-band numbered 7.

When the downlink unicast data and at least one public data are transmitted simultaneously and are located in a sub-band different from the public data, the low-cost MTC UE with the corresponding transmission bandwidth reduced selects at most one of all public data or selects the downlink unicast data for receiving according to the self requirement.

The method ensures that the uplink/downlink unicast data of different UEs use different sub-band frequency hopping sequences, thereby avoiding or reducing the conflict between the uplink/downlink unicast data of different UEs.

Third embodiment, fig. 9 is a diagram illustrating a starting subframe position of uplink/downlink unicast data for restricting mtcu repeated transmission simultaneously with requirements for transmission bandwidth reduction and coverage enhancement, as shown in fig. 9, assuming the last 3 (N) within the system bandwidth_u3) sub-bands are dedicated uplink/downlink unicast data transmission regions for low-cost MTC UEs with simultaneous requirements for transmission bandwidth reduction and coverage enhancement, at time t₀Is the starting time of one of the starting sub-frames of successive sub-frames that are restricted for repeated transmission of uplink/downlink unicast data.

The subband hopping sequence of the uplink/downlink unicast data is assumed as follows: {0,1,2 }; the identities ueid1, ueid2, and ueid3 of the 3 UEs are 0,1, and 2 in order.

The sub-band hopping sequences of the 3 UE uplink/downlink unicast data are respectively: {0,1,2}, {1,2,0} and {2,0,1 }.

At slave time t₀In each initial continuous 3 time intervals, the sub-band for transmitting uplink/downlink unicast data of each UE in the uplink/downlink unicast data transmission region is determined one by 3 elements included in the sub-band hopping sequence of the uplink/downlink unicast data of each UE.

The actual duration of the repeated transmission of uplink/downlink unicast data by each UE depends on the coverage enhancement goal it needs to achieve. The above approach reduces the complexity of the scheduler.

In a fourth embodiment, assuming that a transmission region of common data includes 10 sub-bands, fig. 10 is a schematic diagram of a special sub-band position of low-cost MTC UE common data transmission that cannot be used for transmission bandwidth reduction, as shown in fig. 10(a), according to a sub-band hopping sequence of different types of common data, sub-bands for transmitting SIB message, RAR message and Paging message in a sub-frame x range should be sub-bands numbered 3, 4 and 5, respectively; however, if the sub-band numbered 4 in the sub-frame x range is configured to be unavailable for low-cost MTC UE data transmission with reduced transmission bandwidth, the RAR message that should be transmitted in the sub-band numbered 4 would be transferred to the sub-band numbered 6 (the 1 st available sub-band located after the sub-band numbered 4 that is not used for other common data transmission) for transmission, as shown in fig. 10 (b).

The method ensures that the low-cost MTC UE with reduced transmission bandwidth can normally transmit the common data under the condition that the sub-band for transmitting the common data acquired according to the sub-band frequency hopping sequence can not be used by the UE to a certain extent.

Referring to fig. 11, the present invention further provides an apparatus for transmitting data, which at least includes:

a transmission module, configured to transmit data on the determined sub-band;

where different types of data have different subband hopping sequences.

In the apparatus of the present invention, the obtaining module is further configured to:

acquiring a data transmission area;

the determination module is specifically configured to:

In the apparatus of the present invention, the obtaining module is specifically configured to:

In the apparatus of the present invention, the broadcast signaling or the proprietary signaling includes at least: a field indicating the number of subbands included in a transmission region of the uplink/downlink unicast data; and a field indicating positions of all sub-bands in a transmission region of the uplink/downlink unicast data;

the acquisition module is further configured to:

according to the formula

Calculating specific values of fields indicating the positions of all sub-bands in a transmission region of uplink/downlink unicast data;

wherein k is more than or equal to 1_i≤N_total，k_i<k_i+1，v_uA specific value of a field indicating the positions of all sub-bands in a transmission region of uplink/downlink unicast data; n is a radical of_uThe number of sub-bands in the transmission region of the uplink/downlink unicast data; n is a radical of_totalIs the total number of usable subbands in the system bandwidth; k is a radical of_iIs N_uThe ith sub-band of the sub-bands is at N_totalIndices in individual subbands.

acquiring a sub-band frequency hopping base sequence of the data according to the number of sub-bands and the cell identification in the data transmission region; and acquiring the sub-band frequency hopping sequence of the data according to the acquired sub-band frequency hopping base sequence.

sequentially generating N from a pseudorandom sequence_cA and N_uA number of different decimal numbers;

n to be generated_cSorting different decimal numbers according to a first preset rule, and sorting the sorted N_cN before sorting of different decimal numbers_cSubband hopping base with position index sequence in different decimal numbers as common dataA sequence; wherein N is_cThe number of sub-bands in the transmission region for public data;

n to be generated_uOrdering the different decimal numbers according to a second preset rule, and ordering the N_uN before sorting of different decimal numbers_uThe position index sequence in different decimal numbers is used as a sub-band frequency hopping base sequence of uplink/downlink unicast data; wherein N is_uIs the number of sub-bands in the transmission region of the uplink/downlink unicast data.

extracting (K1-1) th K2+1 to K1K2 continuous bits from the generated pseudo-random sequence, and converting the extracted (K1-1) th K2+1 to K1K2 continuous bits into corresponding decimal numbers; discarding the extracted (K1-1) th K2+1 through K1K2 consecutive bits if the extracted (K1-1) th K2+1 through K1K2 consecutive bits are the same as the extracted (K3-1) th K2+1 through K3K2 consecutive bits; if not, converting the extracted (K1-1) K2+1 to K1K2 continuous bits into corresponding decimal numbers; continuing the step of extracting successive bits until N is obtained_cA number of different decimal numbers;

using the generated pseudo-random sequence to generate N_cGenerating a new pseudo-random sequence by deleting bits of different decimal numbers, and generating N according to the method based on the new pseudo-random sequence_uA number of different decimal numbers; where K1 takes on values in an incremental manner starting from 1, 1<K3<K1, K2 are the number of consecutive bits extracted.

according to the formula

Acquiring a sub-band frequency hopping sequence of the SIB message;

wherein, { S_sib,0,S_sib,1,…,S_sib,Nc-1Is the subband hopping sequence of SIB messages, { b_c,0,b_c,1,…,b_c,Nc-1O subband hopping base sequence of public data_sibThe subband hopping sequences for SIB messages are relatively commonDetermining bias of a sub-band frequency hopping base sequence with data;

according to the formula

Acquiring a sub-band frequency hopping sequence of the RAR message;

wherein, { S_rar,0,S_rar,1,…,S_rar,Nc-1Is the subband hopping sequence of the RAR message, { b_c,0,b_c,1,…,b_c,Nc-1O subband hopping base sequence of public data_rarDetermining offset of a sub-band frequency hopping sequence of the RAR message relative to a sub-band frequency hopping base sequence of public data;

according to the formula

Acquiring a sub-band frequency hopping sequence of the Paging message;

wherein, { S_Paging,0,S_Paging,1,…,S_Paging,Nc-1Is the subband hopping sequence of the Paging message, { b_c,0,b_c,1,…,b_c,Nc-1O subband hopping base sequence of public data_PagingDetermining bias of a sub-band frequency hopping sequence of the Paging message relative to a sub-band frequency hopping base sequence of public data;

according to the formula

Acquiring a sub-band frequency hopping sequence of uplink/downlink unicast data;

In the apparatus of the present invention, the determining module is further configured to:

determining a sub-band for transmitting data in a data transmission region in an ith time interval according to an ith element in a sub-band frequency hopping sequence of the data;

when the data is public data, i takes 1 to N_cA positive integer of (d); when the data is the uplink/downlink unicast data, i is 1 to N_uA positive integer of (d); wherein N is_cNumber of sub-bands in transmission region for public data, N_uIs the number of sub-bands in the transmission region of the uplink/downlink unicast data.

It should be noted that the above-mentioned embodiments are only for facilitating the understanding of those skilled in the art, and are not intended to limit the scope of the present invention, and any obvious substitutions, modifications, etc. made by those skilled in the art without departing from the inventive concept of the present invention are within the scope of the present invention.

Claims

1. A method of transmitting data, comprising:

wherein different types of data have different subband hopping sequences;

the data is public data or uplink/downlink unicast data, and a sub-band frequency hopping sequence of the public data is different from a sub-band frequency hopping sequence of the uplink/downlink unicast data;

acquiring a transmission area of the public data in a predefined mode, and acquiring a transmission area of the uplink/downlink unicast data in a predefined mode or a broadcast signaling or a special signaling;

the broadcast signaling or the proprietary signaling includes at least: a field indicating the number of subbands included in a transmission region of the uplink/downlink unicast data; and a field indicating positions of all sub-bands in a transmission region of the uplink/downlink unicast data;

according to the formula

2. The method of claim 1, further comprising, prior to the method: the base station or the UE acquires a transmission area of the data;

3. The method of claim 2, wherein the transmission region comprises one or more sub-bands, and wherein the sub-bands occupy one or more physical resource blocks.

4. The method of claim 1, wherein there is no overlap between the transmission region of the public data and the transmission region of the downstream unicast data;

5. The method of claim 4, wherein the absence of overlap between the transmission regions of the public data and the downlink unicast data comprises: the transmission areas of the downlink unicast data are two sides of the system bandwidth, and the transmission areas of the public data are other areas except the transmission areas of the downlink unicast data in the system bandwidth.

6. The method of claim 4, wherein the resource mapping manner of the public data in the transmission region of the public data is different from the resource mapping manner of the downlink unicast data in the transmission region of the downlink unicast data, and the method comprises:

7. The method of claim 1, wherein the broadcast signaling is master information block, MIB, signaling or system information block, SIB, signaling.

8. The method of claim 1, wherein the base station or the UE acquiring the subband hopping sequence of data comprises:

9. The method of claim 8, wherein the length of the subband hopping base sequence of the data or the subband hopping sequence is the number of subbands in the transmission region of the data.

10. The method of claim 8, wherein the base station or the UE acquires the subband hopping base sequence of the data according to the number of subbands in the transmission region of the data and the cell identifier, comprising:

11. The method of claim 10, wherein obtaining the subband hopping base sequence of data according to the generated pseudo-random sequence comprises:

12. The method of claim 11, wherein the sequentially generating N is based on a pseudo-random sequence_cA and N_uThe different decimal numbers include:

13. The method of claim 1, wherein the public data is a System Information Block (SIB) message, a Random Access Response (RAR) message, or a Paging message.

14. The method of claim 13, wherein the sub-band hopping sequence of the SIB message, the sub-band hopping sequence of the RAR message, and the sub-band hopping sequence of the Paging message are different from each other and have a certain relative offset.

15. The method of claim 14, wherein obtaining the subband hopping sequence of data according to the obtained subband hopping base sequence comprises:

according to the formula

Acquiring a sub-band frequency hopping sequence of the SIB message;

according to the formula

Acquiring a sub-band frequency hopping sequence of the RAR message;

according to the formula

Acquiring a sub-band frequency hopping sequence of the Paging message;

16. The method of claim 13, wherein obtaining the subband hopping sequence of data according to the obtained subband hopping base sequence comprises:

according to the formula

17. The method of claim 1, wherein the base station or the UE determining the sub-band for transmitting data according to the obtained sub-band hopping sequence comprises:

18. The method of claim 17, wherein the time interval is one or more slots, or one or more radio frames, or one or more subframes in size.

19. The method of claim 17, wherein transmitting data on the determined sub-band comprises: and transmitting the uplink/downlink unicast data on the determined sub-band by adopting a repeated transmission mechanism.

20. The method of claim 19, wherein the base station or the UE transmits repeatedly transmitted uplink/downlink unicast data from a first subframe of a first time interval.

21. The method of claim 20,

and the size of the time interval and/or the size of the determined sub-band are determined according to the maximum repeated transmission times or the actual repeated transmission times of the uplink/downlink unicast data.

22. The method of claim 1, wherein the upstream unicast data comprises: uplink unicast service data and uplink unicast control data;

23. The method of claim 22, wherein transmitting data on the determined sub-band comprises:

24. The method according to any one of claims 1 to 3, wherein when it is determined that the determined sub-band for transmitting data is preset or configured to be unavailable, the sub-band for transmitting data is determined to be another available sub-band.

25. An apparatus for transmitting data, comprising at least:

the acquisition module is used for acquiring a sub-band frequency hopping sequence of the data; and acquiring a transmission area of the data;

a determining module, configured to determine a sub-band for transmitting data in the transmission region according to the obtained sub-band hopping sequence;

a transmission module, configured to transmit data on the determined sub-band;

wherein different types of data have different subband hopping sequences;

the acquisition module is specifically configured to:

acquiring a transmission area of public data in a predefined mode, and acquiring a transmission area of uplink/downlink unicast data in a predefined mode or a broadcast signaling or a special signaling;

the acquisition module is further configured to:

according to the formula

26. The apparatus of claim 25, wherein the obtaining module is specifically configured to:

27. The apparatus of claim 26, wherein the obtaining module is further configured to:

28. The apparatus of claim 27, wherein the obtaining module is further configured to:

29. The apparatus of claim 28, wherein the obtaining module is further configured to:

extracting (K1-1) th K2+1 to K1K2 continuous bits from the generated pseudo-random sequence, and converting the extracted (K1-1) th K2+1 to K1K2 continuous bits into corresponding decimal numbers; discarding the extracted (K1-1) th K2+1 through K1K2 consecutive bits if the extracted (K1-1) th K2+1 through K1K2 consecutive bits are the same as the extracted (K3-1) th K2+1 through K3K2 consecutive bits; if not, converting the extracted (K1-1) K2+1 to K1K2 continuous bits into corresponding decimal numbers; continuing to extract successive bitsUntil N is obtained_cA number of different decimal numbers;

using the generated pseudo-random sequence to generate N_cGenerating a new pseudo-random sequence by deleting bits of different decimal numbers, and obtaining N_CGenerating N from the new pseudo-random sequence in different decimal numbers_uA number of different decimal numbers; where K1 takes on values in an incremental manner starting from 1, 1<K3<K1, K2 are the number of consecutive bits extracted.

30. The apparatus of claim 26, wherein the obtaining module is further configured to:

according to the formula

Acquiring a sub-band frequency hopping sequence of the SIB message;

according to the formula

Acquiring a sub-band frequency hopping sequence of the RAR message;

according to the formula

Child to get Paging messageA band hopping sequence;

31. The apparatus of claim 26, wherein the obtaining module is further configured to:

according to the formula

32. The apparatus of claim 25, wherein the determining module is further configured to:

when the data is public data, the i is 1 to N_cA positive integer of (d); when the data is uplink/downlink unicast data, the i is 1 to N_uA positive integer of (d); wherein, the N is_cIs the number of sub-bands in the transmission region of the public data, N_uFor the transmission area of the uplink/downlink unicast dataThe number of subbands in (1).

33. The apparatus of claim 25, wherein the data is public data or uplink unicast data; the uplink unicast data includes: uplink unicast service data and uplink unicast control data;

the transmission module is specifically configured to:

34. The apparatus of claim 25, wherein the determining module is further configured to: