CN106961735B - Resource using method and device - Google Patents

Resource using method and device Download PDF

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CN106961735B
CN106961735B CN201610017669.0A CN201610017669A CN106961735B CN 106961735 B CN106961735 B CN 106961735B CN 201610017669 A CN201610017669 A CN 201610017669A CN 106961735 B CN106961735 B CN 106961735B
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ofdm symbol
subframes
data
resource
resources
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CN106961735A (en
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陈宪明
戴博
石靖
方惠英
夏树强
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ZTE Corp
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ZTE Corp
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Priority to PCT/CN2017/073479 priority patent/WO2017121413A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/53—Allocation or scheduling criteria for wireless resources based on regulatory allocation policies

Abstract

The invention provides a resource using method and a resource using device, wherein the method comprises the following steps: determining a resource using mode; transmitting data or signals using predefined Orthogonal Frequency Division Multiplexing (OFDM) symbol resources according to the determined resource usage mode, wherein the mode of transmitting data or signals comprises at least one of the following steps: data or signals are transmitted by the base station and received by the terminal. The invention solves the problem that for non-In-band operation In the related technology, the technical scheme of how to use unused OFDM symbol resources In the sub-frames of the transmission NB-PSS/SSS and NB-PBCH does not exist.

Description

Resource using method and device
Technical Field
The present invention relates to the field of communications, and in particular, to a method and apparatus for using resources.
Background
To meet the requirements of the cellular internet of things (Cellular Internet Of Things), a new access system named Narrowband-Cellular Internet Of Things (NB-IOT) was designed to be proposed in the third generation partnership project (3 rd Generation Partnership Project, 3 GPP) organization, the 69 th full meeting. Among other things, NB-IOT systems focus on low complexity and low throughput radio frequency access technologies, and main research objectives include: improved indoor coverage, support for a large number of low throughput user devices, low latency sensitivity, ultra low device cost, low device power consumption, and network architecture. The uplink and downlink transmission bandwidths of the NB-IOT system are 180kHz and are the same as the bandwidths of one physical resource block (Physical Resource Block, abbreviated as PRB) of a long term evolution (Long Term Evolution, abbreviated as LTE) system, which is beneficial to reusing the related design of the existing LTE system in the NB-IOT system. In addition, the NB-IOT system supports 3 different modes of operation: 1) Stand alone (standby) operation, e.g., with the spectrum currently being used by the GERAN (GSM EDGE Radio Access Network) system to replace one or more GSM carriers; 2) Guard-band (Guard-band) operations, e.g., utilizing unused resource blocks within one LTE carrier Guard band; 3) In-band (In-band) operation, for example, utilizes resource blocks within a normal LTE carrier range.
For the NB-IOT system, under In-band operation, at least one orthogonal frequency division multiplexing (ortho-nal Frequency Division Multiplexing, abbreviated OFDM) symbol located In front of the subframe has been used for existing LTE system downlink control channel (Physical Downlink Control Channel, abbreviated PDCCH) transmission, and therefore cannot be used for NB-IOT physical downlink channel or signal transmission. In addition, the terminal device may not yet know the operation mode of the current system until the NB-IOT physical broadcast channel (narrow band-Physical Broadcast Channel, abbreviated NB-PBCH) is correctly decoded. In view of the above, to simplify the access procedure and reduce the complexity of terminal detection, it is preferable to use the same primary synchronization/secondary synchronization (NB-PSS/SSS) and NB-PBCH resource mapping (i.e., also not occupying at least one OFDM symbol resource In front of the subframe) as In-band operation for non-In-band operation mode. In this case, there is no technical scheme how to use unused OFDM symbols within the transmission NB-PSS/SSS and NB-PBCH subframes for non-In-band operation In the related art.
There is currently no effective solution to the above-described problems in the related art.
Disclosure of Invention
The invention provides a resource using method and a resource using device, which at least solve the problem that In the related technology, for non-In-band operation, a technical scheme of how to use unused OFDM symbol resources In subframes for transmitting NB-PSS/SSS and NB-PBCH does not exist.
According to an aspect of the present invention, there is provided a method for using resources, including: determining a resource usage pattern, wherein the resource usage pattern comprises one of the following: for physical downlink control channel NB-PDCCH data transmission, for physical downlink shared channel NB-PDSCH data transmission, for primary synchronization/secondary synchronization signal NB-PSS/SSS transmission, for physical broadcast channel NB-PBCH data transmission, for reference signal RS transmission, for dedicated physical downlink channel data transmission; transmitting data or signals using predefined orthogonal frequency division multiplexing, OFDM, symbol resources in accordance with the determined resource usage pattern, wherein the pattern of transmitting the data or signals comprises at least one of: the data or the signal is transmitted by a base station, and the data or the signal is received by a terminal.
Further, the predefined OFDM symbol resources include at least one of: a first OFDM symbol resource, a second OFDM symbol resource; wherein the first OFDM symbol resource is an OFDM symbol resource which is not used for NB-PSS/SSS signal transmission under In-band operation In a first type subframe, and the first type subframe is a subframe for NB-PSS/SSS signal transmission under In-band operation; the second OFDM symbol resource is an OFDM symbol resource which is not used for NB-PBCH data transmission under In-band operation In the second type subframe; the second type of subframes are subframes for transmitting NB-PBCH data In-band operation.
Further, the first OFDM symbol resource is 2, 3 or 5 OFDM symbols within the first type subframe; wherein, when the first OFDM symbol resource is 3 OFDM symbols in the first type subframe, the first type subframe includes at least one of the following: the first type of subframes are subframes with Normal cyclic prefix CP of frequency division duplex FDD; the first type of subframes are subframes of FDD with Extended CP; the first type of subframes are Normal subframes of Time Division Duplex (TDD) with Normal CP; the first type of subframes are Normal subframes of TDD with Extended CP; when the first OFDM symbol resource is 2 OFDM symbols in the first type subframe, the first type subframe includes at least one of: the first type of subframes are special subframes of TDD with Normal CP; the first type of subframes are special subframes of TDD with Extended CP; when the first OFDM symbol resource is 5 OFDM symbols in the first type subframe, the first type subframe includes: the first type of subframes are FDD subframes with Normal CP.
Further, the second OFDM symbol resource is 2, 3 or 5 OFDM symbols within the second class of subframes; wherein, when the second OFDM symbol resource is 3 OFDM symbols in the second class subframe, the second class subframe includes at least one of: the second type of subframes are FDD subframes with Normal CP; the second type of subframes are FDD subframes with Extended CP; the second type of subframes are Normal subframes of TDD with Normal CP; the second type of subframes are Normal subframes of TDD with Extended CP; when the second OFDM symbol resource is 2 OFDM symbols within the second class of subframes, the second class of subframes includes at least one of: the second type of subframes are special subframes of TDD with Normal CP; the second type of subframes are special subframes of TDD with Extended CP; when the second OFDM symbol resource is 5 OFDM symbols in the second class subframe, the second class subframe includes: the second type of subframes are FDD subframes with Normal CP.
Further, the predefined OFDM symbol resources are used for data or signal transmission in the following manner: and independently transmitting data or signals by using the predefined OFDM symbol resources, or jointly transmitting data or signals by using the predefined OFDM symbol resources and non-predefined OFDM symbol resources.
Further, the independently transmitting data or signals using the predefined OFDM symbol resources includes: carrying out data or signal transmission by jointly using the first OFDM symbol resources in the K1 subframes, or carrying out data or signal transmission by jointly using the second OFDM symbol resources in the K2 subframes, or carrying out data or signal transmission by jointly using the first OFDM symbol resources in the L1 subframes and the second OFDM symbol resources in the L2 subframes; wherein, K1, K2, L1 and L2 are integers greater than 0.
Further, the using the predefined OFDM symbol resources in conjunction with non-predefined OFDM symbol resources for data or signal transmission includes: carrying out data or signal transmission by jointly using first OFDM symbol resources in X1 subframes and Y1 other subframe resources, or carrying out data or signal transmission by jointly using first OFDM symbol resources in X1 subframes and non-first OFDM symbol resources in X1 subframes, or carrying out data or signal transmission by jointly using second OFDM symbol resources in X2 subframes and Y2 other subframe resources, or carrying out data or signal transmission by jointly using second OFDM symbol resources in X2 subframes and non-second OFDM symbol resources in X2 subframes, or carrying out data or signal transmission by jointly using first OFDM symbol resources in Z1 subframes, second OFDM symbol resources in Z2 subframes and Y3 other subframe resources, or carrying out data or signal transmission by jointly using first OFDM symbol resources in Z1 subframes and non-first OFDM symbol resources in Z2 subframes and second OFDM symbol resources in Z2 subframes, or carrying out data or signal transmission by jointly using second OFDM symbol resources in Z1 subframes and non-first OFDM symbol resources in Z2 subframes; wherein the other subframes are subframes other than the first type subframes and the second type subframes, and the X1, X2, Y1, Y2, Y3, Z1, and Z2 are integers greater than 0.
Further, the manner in which the data or signal transmission using the predefined OFDM symbol resources is performed is predefined or signaled.
Further, when NB-PDSCH data transmission is independently performed using the predefined OFDM symbol resources, one NB-PDSCH physical resource block PRB includes: first OFDM symbol resources in M1 subframes of the first type; or, second OFDM symbol resources in M2 subframes of the second class; or, a first OFDM symbol resource in N1 subframes of the first type and a second OFDM symbol resource in N2 subframes of the second type; wherein M1, M2, N1 and N2 are integers greater than 1.
Further, when the predefined OFDM symbol resources are used for independently transmitting NB-PDCCH data, the number of resource element groups NB-REGs included in one NB-PDCCH control channel element NB-CCE is greater than the number of NB-REGs included in NB-CCE when NB-PDCCH data is transmitted using a normal NB-PDCCH subframe, or is equal to the number of NB-REGs included in NB-CCE when NB-PDCCH data is transmitted using a normal NB-PDCCH subframe, and the maximum aggregation level AL used is greater than the maximum AL used when NB-PDCCH data is transmitted using a normal NB-PDCCH subframe; the normal NB-PDCCH subframe is a subframe in which all OFDM symbols in the subframe are used for NB-PDCCH data transmission.
Further, when RS transmission is performed using the predefined OFDM symbol resources, the RS function includes: channel measurement, positioning, demodulation of physical downlink channel data.
Further, when RS transmission is performed using the predefined OFDM symbol resource, the RS is a Cell-specific reference signal.
Further, when RS transmission is performed using the predefined OFDM symbol resources, the RS has the same number of antenna ports as a normal RS; wherein the normal RS is a Cell-specific reference signal specific to a basic Cell in the system.
Further, at least 1 first OFDM symbol resource in the first type subframe is used for RS transmission when the predefined OFDM symbol resource is used for the RS transmission; or at least 1 second OFDM symbol resource in the second class subframe is used for the RS transmission; alternatively, at least 1 first OFDM symbol resource in the first type subframe and at least 1 second OFDM symbol resource in the second type subframe are used for the RS transmission.
Further, when the predefined OFDM symbol resources and the non-predefined OFDM symbol resources are used for carrying out NB-PSS/SSS transmission in a combined mode, the first OFDM symbol resources and the non-first OFDM symbol resources in the first type subframe of the 1 transmission NB-PSS are used for carrying out NB-PSS transmission in a combined mode, and the first OFDM symbol resources and the non-first OFDM symbol resources in the first type subframe of the 1 transmission NB-SSS are used for carrying out NB-SSS transmission in a combined mode.
Further, in a first type of subframe in which the NB-PSS is transmitted, the NB-PSS signal carried by one OFDM symbol in the first OFDM symbol resource is the same as the NB-PSS signal carried by one OFDM symbol in the non-first OFDM symbol resource.
Further, in a first type of subframe in which NB-SSS is transmitted, an NB-SSS signal carried by one OFDM symbol in the first OFDM symbol resource is the same as an NB-SSS signal carried by one OFDM symbol in the non-first OFDM symbol resource.
Further, when NB-PBCH data transmission is independently performed using the predefined OFDM symbol resources, the length Q1 is determined according to the following equation: q1=c×d1; wherein, the C is the number of NB-PBCH coding sub-blocks included in one NB-PBCH coding block, and the D1 is the number of NB-PBCH coding sub-block data that can be carried by the predefined OFDM symbol resource; generating NB-PBCH coding block data with the length of Q1; and taking data with the number of { c multiplied by D1, c multiplied by D1+1, …, (c multiplied by 1) multiplied by D1-1} in the NB-PBCH coding block data with the length of Q1 as NB-PBCH coding sub-block data carried by the predefined OFDM symbol resource, wherein c is the number of the NB-PBCH coding sub-block transmitted on the predefined OFDM symbol resource.
Further, upon NB-PBCH data transmission using the predefined OFDM symbol resources in combination with non-predefined OFDM symbol resources, a length Q2 is determined according to the following equation: q2=c×d2; wherein, the C is the number of NB-PBCH coding sub-blocks included in one NB-PBCH coding block, and the D2 is the sum of the number of NB-PBCH coding sub-block data which can be carried by the predefined OFDM symbol resource and the number of NB-PBCH coding sub-block data which can be carried by the non-predefined OFDM symbol resource; generating NB-PBCH coding block data with the length of Q2; taking data with the number of { c multiplied by D2, c multiplied by D2+1, …, (c multiplied by 1) multiplied by D2-1} in NB-PBCH coding block data with the length of Q2 as NB-PBCH coding sub-block data carried by the predefined OFDM symbol resources and the non-predefined OFDM symbol resources, wherein c is the number of the NB-PBCH coding sub-block transmitted on the predefined OFDM symbol resources and the non-predefined OFDM symbol resources.
Further, when the predefined OFDM symbol resources are used for dedicated physical downlink channel transmission, the dedicated physical downlink channel is a broadcast channel.
Further, when the predefined OFDM symbol resource is used for transmitting the special physical downlink channel, the scheduling period of the special physical downlink channel comprises at least 1 NB-PBCH sub-block period.
Further, when the predefined OFDM symbol resource is used for dedicated physical downlink channel transmission, the content carried by the dedicated physical downlink channel includes at least one of the following: access control information, cell handover information, TDD subframe configuration information, FDD uplink frequency configuration information, power control information, physical channel configuration information, dedicated control information under standby operation, dedicated control information under Guard-band operation.
Further, when the predefined OFDM symbol resources are used for NB-PDSCH data transmission, the NB-PDSCH data comprises Paging NB-Paging data and system information block SIB data.
Further, when the predefined OFDM symbol resource is used for NB-PDCCH data transmission, the NB-PDCCH data comprises NB-PDCCH data of a common search space CSS.
Further, when the pre-defined OFDM symbol resource is used for carrying out NB-PDSCH data or NB-PDCCH data or special physical downlink channel data transmission, carrying out resource mapping according to a Cell-specific RS of a 2-antenna port; and when the pre-defined OFDM symbol resources are used for carrying out NB-PBCH data transmission, resource mapping is carried out according to Cell-specific RS of 2 or 4 antenna ports.
Further, the determining the resource usage mode to be used includes: determining an operation mode to be used, wherein the operation mode comprises: guard-band operation mode and independent standby operation mode; and determining the resource using mode according to the determined operation mode.
According to another aspect of the present invention, there is provided a resource using apparatus, comprising: the determining module is used for determining a resource using mode; wherein the resource usage pattern includes one of the following: for physical downlink control channel NB-PDCCH data transmission, for physical downlink shared channel NB-PDSCH data transmission, for primary synchronization/secondary synchronization signal NB-PSS/SSS transmission, for physical broadcast channel NB-PBCH data transmission, for reference signal RS transmission, for dedicated physical downlink channel data transmission; a transmission module, configured to transmit data or signals using predefined orthogonal frequency division multiplexing OFDM symbol resources according to the determined resource usage manner, where the manner of transmitting the data or the signals includes at least one of: the data or the signal is transmitted by a base station, and the data or the signal is received by a terminal.
Further, the predefined OFDM symbol resources include at least one of: a first OFDM symbol resource, a second OFDM symbol resource; wherein the first OFDM symbol resource is an OFDM symbol resource which is not used for NB-PSS/SSS signal transmission under In-band operation In a first type subframe, and the first type subframe is a subframe for NB-PSS/SSS signal transmission under In-band operation; the second OFDM symbol resource is an OFDM symbol resource which is not used for NB-PBCH data transmission under In-band operation In the second type subframe; wherein the second type of subframes are subframes for transmitting NB-PBCH data In-band operation.
Further, the transmission module includes: a first transmission unit, configured to independently perform data or signal transmission using the predefined OFDM symbol resources; or, a second transmission unit, configured to perform data or signal transmission by using the predefined OFDM symbol resource in combination with a non-predefined OFDM symbol resource.
Further, the first transmission unit is further configured to jointly use first OFDM symbol resources in K1 subframes of the first type to perform data or signal transmission, or jointly use second OFDM symbol resources in K2 subframes of the second type to perform data or signal transmission, or jointly use first OFDM symbol resources in L1 subframes of the first type and second OFDM symbol resources in L2 subframes of the second type to perform data or signal transmission; wherein, K1, K2, L1 and L2 are integers greater than 0.
Further, the second transmission unit is further configured to perform data or signal transmission by jointly using a first OFDM symbol resource in the X1 first type subframe and Y1 other subframe resources, or jointly using a first OFDM symbol resource in the X1 first type subframe and a non-first OFDM symbol resource, or jointly using a second OFDM symbol resource in the X2 second type subframe and Y2 other subframe resources, or jointly using a second OFDM symbol resource in the X2 second type subframe and a non-second OFDM symbol resource, or jointly using a first OFDM symbol resource in the Z1 first type subframe, a second OFDM symbol resource in the Z2 second type subframe and Y3 other subframe resources, or jointly using a first OFDM symbol resource in the Z1 first type subframe and a non-first OFDM symbol resource and a second OFDM symbol resource in the Z2 second type subframe, or jointly using a second OFDM symbol resource in the Z1 second type subframe and a second OFDM symbol resource in the Z2 second type subframe, or jointly using a data or a data symbol resource in the Z1 second type subframe and a non-second OFDM symbol resource; wherein the other subframes are subframes other than the first type subframes and the second type subframes, and the X1, X2, Y1, Y2, Y3, Z1, and Z2 are integers greater than 0.
Further, the manner in which the data or signal transmission using the predefined OFDM symbol resources is performed is predefined or signaled.
Further, when the transmission module uses the predefined OFDM symbol resource to perform dedicated physical downlink channel transmission, the content carried by the dedicated physical downlink channel includes at least one of: access control information, cell handover information, TDD subframe configuration information, FDD uplink frequency configuration information, power control information, physical channel configuration information, dedicated control information under standby operation, dedicated control information under Guard-band operation.
In the invention, by adopting a mode of determining the resource usage mode to be used and a mode of using the predefined OFDM symbol resources to transmit data or signals according to the determined resource usage mode, the problem that In the related technology, for non-In-band operation, a technical scheme of how to use unused OFDM symbol resources In subframes for transmitting NB-PSS/SSS and NB-PBCH does not exist is solved, and the downlink resource utilization efficiency of the NB-IOT system In a non-In-band operation mode is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention. In the drawings:
FIG. 1 is a flow chart of a method of using resources according to an embodiment of the invention;
FIG. 2 is a block diagram of a resource-utilizing device according to an embodiment of the present invention;
fig. 3 is a first schematic illustration of NB-PDSCH data transmission using predefined OFDM symbol resources in accordance with an alternative embodiment of the invention;
fig. 4 is a second schematic diagram of NB-PDSCH data transmission using predefined OFDM symbol resources in accordance with an alternative embodiment of the invention;
fig. 5 is a schematic diagram of NB-PDCCH data transmission using predefined OFDM symbol resources in accordance with an alternative embodiment of the present invention;
fig. 6 is a schematic diagram of RS signal transmission using predefined OFDM symbol resources in accordance with an alternative embodiment of the invention;
fig. 7 is a first schematic diagram of NB-PBCH data transmission using predefined OFDM symbol resources in accordance with an alternative embodiment of the present invention;
fig. 8 is a second schematic diagram of NB-PBCH data transmission using predefined OFDM symbol resources in accordance with an alternative embodiment of the present invention;
FIG. 9 is a schematic diagram of NB-PSS/SSS signaling using predefined OFDM symbol resources in accordance with an alternative embodiment of the present invention;
fig. 10 is a schematic diagram of dedicated physical downlink channel data transmission using predefined OFDM symbol resources in accordance with an alternative embodiment of the present invention.
Detailed Description
The invention will be described in detail hereinafter with reference to the drawings in conjunction with embodiments. It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order.
In this embodiment, a method for using a resource is provided, and fig. 1 is a flowchart of a method for using a resource according to an embodiment of the present invention, as shown in fig. 1, where the flowchart includes the following steps:
step S102: determining a resource using mode; wherein the resource usage pattern includes one of the following: for physical downlink control channel (NB-Physical Downlink Control Channel, abbreviated as NB-PDCCH) data transmission, for physical downlink shared channel (NB-Physical Downlink Shared Channel, abbreviated as NB-PDSCH) data transmission, for primary synchronization/secondary synchronization Signal NB-PSS/SSS transmission, for physical broadcast channel NB-PBCH data transmission, for Reference Signal (RS) transmission, for dedicated physical downlink channel data transmission.
Step S104: transmitting data or signals by using predefined Orthogonal Frequency Division Multiplexing (OFDM) symbol resources according to the determined resource usage mode, wherein the mode for transmitting the data or signals comprises at least one of the following steps: data or signals are transmitted by the base station and received by the terminal.
It should be noted that, the method for using the resources shown in the steps S102 to S104 in this embodiment is also applicable to a case that more than one type of predefined OFDM symbol resources exist in the system, where different types of predefined OFDM symbol resources use different resource usage manners, and at this time, any one type of predefined OFDM symbol resources independently applies the method for using the resources shown in the steps S102 to S104.
As can be seen from the above steps S102 to S104, by adopting the manner of determining the resource usage manner and using the predefined OFDM symbol resources to perform data or signal transmission according to the determined resource usage manner, the problem In the related art that for the non-In-band operation, there is no technical solution of how to use the unused OFDM symbol resources In the subframes for transmitting the NB-PSS/SSS and NB-PBCH is solved, and the downlink resource utilization efficiency of the NB-IOT system In the non-In-band operation mode is improved.
In an alternative implementation of the present embodiment, the predefined OFDM symbol resources referred to in the present embodiment include at least one of: a first OFDM symbol resource, a second OFDM symbol resource; wherein the first OFDM symbol resource is an OFDM symbol resource which is not used for NB-PSS/SSS signal transmission under In-band operation In a first type subframe, and the first type subframe is a subframe for NB-PSS/SSS signal transmission under In-band operation; and the second OFDM symbol resources are OFDM symbol resources that are not used for NB-PBCH data transmission In-band operation In a second type of subframes that are subframes for NB-PBCH data transmission In-band operation.
It should also be noted that, from the point of view of adopting a unified design for the initial access procedure of at least different operation modes, under Guard-band and standby operation, the non-first OFDM symbol resources in the first type of subframe are also used for NB-PSS/SSS signal transmission, and the non-second OFDM symbol resources in the second type of subframe are also used for NB-PBCH data transmission. In other words, OFDM symbol resources used for transmitting NB-PSS/SSS In-band operation, and also used for transmitting NB-PSS/SSS In non-In-band operation; similarly, OFDM symbol resources used for transmitting NB-PBCH data In-band operation are also used for transmitting NB-PBCH data In non-In-band operation; it is also possible to transmit NB-PSS/SSS and NB-PBCH data using other OFDM symbol resources (e.g., no OFDM symbol resources for NB-PSS/SSS signal transmission In subframes In which NB-PSS/SSS signals are transmitted and/or no OFDM symbol resources for NB-PBCH transmission In subframes In which NB-PBCH is transmitted) In addition to the same OFDM symbol resources as In-band operation described above, only In non-In-band operation.
In the standby or Guard-band operation, for other subframes except for the first and second type subframes, since no backward compatible LTE system is required, all OFDM symbol resources within a subframe are available, so if there is data or signal transmission, mapping of the data or signal within a subframe always starts from the first OFDM symbol; unlike the standard or Guard-band operation, under In-band operation, no matter whether the first type of subframe or the second type of subframe or other subframes except the first type of subframe and the second type of subframe, if there is data or signal transmission, the mapping of the data or signal within the subframe depends on the type of subframe from which OFDM symbol is started, wherein for one Normal (Normal) or regular subframe, since the first 3 OFDM symbols are used as LTE system physical downlink control channel PDCCH transmission, the mapping always starts from the 4 th OFDM symbol, and for one multicast and broadcast single frequency network (Multicast and Broadcast Single Frequency Network, abbreviated as MBSFN) subframe or TDD special subframe, since the first 2 OFDM symbols are used as LTE system PDCCH transmission, the mapping always starts from the 3 rd OFDM symbol.
Based on the first type of subframes and the second type of subframes, the first OFDM symbol resources involved in the embodiment may be 2, 3 or 5 OFDM symbols in the first type of subframes; the second OFDM symbol resource may be 2, 3 or 5 OFDM symbols within the second class of subframes.
In a specific application scenario of the embodiment, when the first OFDM symbol resource is 3 OFDM symbols in a subframe of a first type, the subframe of the first type includes at least one of: the first type of subframe is a subframe with a Normal Cyclic Prefix (CP) for frequency division duplexing (Frequency Division Duplex, FDD for short); the first type of subframes are FDD subframes with Extended CP; the first type of subframe is a Normal subframe with Normal CP for time division duplexing (Time Division Duplex, abbreviated TDD); the first type of subframe is a Normal subframe of TDD with Extended CP; at this time, the first OFDM symbol resources are the first 3 OFDM symbols in the first type subframe, and other OFDM symbol resources except for the 3 first OFDM symbol resources in the first type subframe are used for NB-PSS/SSS transmission.
And when the first OFDM symbol resource is 2 OFDM symbols within a subframe of a first type, the subframe of the first type includes at least one of: the first type of subframe is a special subframe of TDD with Normal CP; the first type of subframe is a special subframe of TDD with Extended CP; at this time, the first OFDM symbol resources are the first 2 OFDM symbols in the downlink pilot time slot (Downlink Pilot Time Slot, abbreviated as DwPTS) of the first subframe, and the other OFDM symbol resources except for the 2 first OFDM symbol resources in the DwPTS of the first subframe are used for NB-PSS/SSS transmission.
When the first OFDM symbol resource is 5 OFDM symbols in a subframe of a first type, the subframe of the first type includes: the first type of subframes are FDD subframes with Normal CP; at this time, the first OFDM symbol resources are the first 5 OFDM symbol resources in the first type subframe, and other OFDM symbol resources except for the 5 first OFDM symbol resources in the first type subframe are used for NB-PSS/SSS transmission.
In a specific application scenario of the embodiment, when the second OFDM symbol resource is 3 OFDM symbols in the second type subframe, the second type subframe includes at least one of the following: the second type of subframes are subframes of FDD with Normal CP; the second type of subframes are FDD subframes with Extended CP; the second type of subframe is a Normal subframe of TDD with a Normal CP; the second type of subframe is a Normal subframe of TDD with Extended CP; at this time, the second OFDM symbol resources are the first 3 OFDM symbols in the second type subframe, and other OFDM symbol resources except for the 3 second OFDM symbol resources in the second type subframe are used for NB-PBCH transmission.
When the second OFDM symbol resource is 2 OFDM symbols within a second class of subframes, the second class of subframes includes at least one of: the second type of subframes are special subframes of TDD with Normal CP, and the second type of subframes are special subframes of TDD with Extended CP; at this time, the second OFDM symbol resources are the first 2 OFDM symbols in the DwPTS of the second type subframe, and other OFDM symbol resources except for the 2 second OFDM symbol resources in the DwPTS of the second type subframe are used for NB-PBCH transmission.
When the second OFDM symbol resource is 5 OFDM symbols in the second type subframe, the second type subframe includes: the second type of subframes are subframes of FDD with Normal CP; at this time, the second OFDM symbol resources are the first 4 OFDM symbol resources and the OFDM symbol resource numbered 9 or 10 (counted from 0) in the second type subframe, and the other OFDM symbol resources except for the 5 second OFDM symbol resources in the second type subframe are used for NB-PBCH transmission.
Based on the first type subframes and the second type subframes in the present embodiment, one of the following manners is adopted in the present embodiment to perform data or signal transmission by using predefined OFDM symbol resources: data or signal transmission is performed independently using predefined OFDM symbol resources or in combination with non-predefined OFDM symbol resources using predefined OFDM symbol resources.
Wherein the independent data or signal transmission using the predefined OFDM symbol resources comprises:
when the predefined OFDM symbol resources are first OFDM symbol resources, the first OFDM symbol resources in K1 first type subframes are jointly used for data or signal transmission, namely one-time transmission of a coding block or a coding sub-block of the data, or one-time transmission of the signal occupies the first OFDM symbol resources in K1 first type subframes; or when the predefined OFDM symbol resource is a second OFDM symbol resource, jointly using the second OFDM symbol resources in K2 second-class subframes to transmit data or signals, namely, transmitting the coding block or the coding sub-block of the data once, or occupying the second OFDM symbol resources in K1 second-class subframes by transmitting the signals once; or when the predefined OFDM symbol resources comprise first and second OFDM symbol resources, the first OFDM symbol resources in the L1 subframes and the second OFDM symbol resources in the L2 subframes are used jointly for data or signal transmission, namely one transmission of a coding block or a coding subframe of the data, or one transmission of the signal occupies the first OFDM symbol resources in the L1 subframes and the second OFDM symbol resources in the L2 subframes; wherein K1, K2, L1 and L2 are integers greater than 0.
Using predefined OFDM symbols in conjunction with non-predefined OFDM symbol resources for data or signal transmission includes:
when the predefined OFDM symbol resource is a first OFDM symbol resource, the first OFDM symbol resource in X1 subframes of the first type and Y1 other subframe resources are used jointly for data or signal transmission, namely one transmission of a coding block or a coding subframe of data or one transmission of a signal occupies the first OFDM symbol resource in X1 subframes of the first type and Y1 other subframe resources;
or when the predefined OFDM symbol resource is a first OFDM symbol resource, the first OFDM symbol resource and the non-first OFDM symbol resource in X1 subframes of the first type are used jointly for data or signal transmission, namely one transmission of a coding block or a coding subframe of data or one transmission of a signal occupies the first OFDM symbol resource and the non-first OFDM symbol resource in X1 subframes of the first type;
or when the predefined OFDM symbol resource is a second OFDM symbol resource, jointly using the second OFDM symbol resource in the X2 second type subframes and Y2 other subframe resources to perform data or signal transmission, namely, one transmission of a coding block or a coding subframe of data or one transmission of a signal occupies the second OFDM symbol resource in the X2 second type subframes and Y2 other subframe resources;
Or when the predefined OFDM symbol resource is a second OFDM symbol resource, jointly using the second OFDM symbol resource and the non-second OFDM symbol resource in the X2 second type subframes to perform data or signal transmission, namely, one transmission of a coding block or a coding sub-block of data or one transmission of a signal occupies the second OFDM symbol resource and the non-second OFDM symbol resource in the X2 second type subframes;
or when the predefined OFDM symbol resources comprise first and second OFDM symbol resources, jointly using the first OFDM symbol resources in Z1 subframes, the second OFDM symbol resources in Z2 subframes and Y3 other subframe resources for data or signal transmission, namely, one transmission of a coding block or a coding subframe of data occupies the first OFDM symbol resources in Z1 subframes, the second OFDM symbol resources in Z2 subframes and Y3 other subframe resources;
or when the predefined OFDM symbol resources comprise first and second OFDM symbol resources, using the first OFDM symbol resources and non-first OFDM symbol resources in Z1 subframes and the second OFDM symbol resources in Z2 subframes jointly for data or signal transmission, namely, one transmission of a coding block or a coding sub-block of data or one transmission of a signal occupies the first OFDM symbol resources and non-first OFDM symbol resources in Z1 subframes and the second OFDM symbol resources in Z2 subframes;
Or when the predefined OFDM symbol resources comprise first and second OFDM symbol resources, jointly using the first OFDM symbol resources in Z1 subframes and the second OFDM symbol resources and non-second OFDM symbol resources in Z2 subframes for data or signal transmission, namely, one transmission of a coding block or a coding subframe of data or one transmission of a signal occupies the first OFDM symbol resources in Z1 subframes and the second OFDM symbol resources and non-second OFDM symbol resources in Z2 subframes; wherein the other subframes are subframes other than the first type subframes and the second type subframes, and X1, X2, Y1, Y2, Y3, Z1, and Z2 are integers greater than 0.
It should be noted that, in this embodiment, the manner in which the data or signal is transmitted using the predefined OFDM symbol resources (that is, data or signal is transmitted independently or in association with the non-predefined OFDM symbol resources) may be predefined or indicated by signaling; for example, when the resource usage mode is used for NB-PDSCH data transmission, the mode adopted for data transmission using the predefined OFDM symbol resource is indicated through downlink control information (Downlink Control Information, DCI for short), wherein the DCI signaling includes, but is not limited to, a specific bit field in DCI and a size of a DCI payload; when the resource usage pattern is not used for NB-PDSCH data transmission, the pattern in which the predefined OFDM symbol resources are used for data or signal transmission is predefined, for example, for the resource usage pattern used for NB-PDCCH data or for dedicated physical downlink channel data or for RS signal transmission, the data or signal transmission is predefined independently, and for the resource usage pattern used for NB-PBCH data or NB-PSS/SSS signal transmission, the data or signal transmission is predefined in combination with the non-predefined OFDM symbol resources.
For the specific application scenario one in this embodiment: when NB-PDSCH data transmission is performed independently using predefined OFDM symbol resources, one NB-PDSCH physical resource block PRB includes: first OFDM symbol resources in M1 subframes of the first type (when the predefined OFDM symbol resources are first OFDM symbol resources); or, a second OFDM symbol resource in M2 subframes of the second type (when the predefined OFDM symbol resource is a second OFDM symbol resource); alternatively, a first OFDM symbol resource in N1 subframes of the first type and a second OFDM symbol resource in N2 subframes of the second type (when the predefined OFDM symbol resources include the first and second OFDM symbol resources); wherein M1, M2, N1 and N2 are integers greater than 1. Among these, the PRB may also be referred to as a minimum resource allocation granularity.
In addition, since the number of first or second OFDM symbol resources within the first or second type of subframes is relatively small, one PRB needs to occupy relatively more subframes when NB-PDSCH data transmission is independently performed using predefined OFDM symbol resources in order to achieve the same coverage as when NB-PDSCH data is transmitted using normal NB-PDSCH subframes (subframes in which all OFDM symbols within a subframe are used for NB-PDSCH data transmission).
For the specific application scenario two in this embodiment: in case of using predefined OFDM symbol resources for independent NB-PDCCH data transmission, since the number of first or second OFDM symbol resources within the first or second type subframes is relatively small, in order to achieve the same NB-PDCCH coverage as in case of using normal NB-PDCCH subframes (subframes where all OFDM symbols are used for NB-PDCCH data transmission) for NB-PDCCH data transmission, the number of resource element groups (nrowband-Resource Element Group, abbreviated as NB-REGs) comprised by one NB-PDCCH control channel element (nrowband-Control Channel Element, abbreviated as NB-CCE) may be set to be larger than the number of NB-REGs comprised by NB-CCEs in case of using normal NB-PDCCH subframes for NB-PDCCH data transmission, for example, if 1 NB-CCE in case of using normal NB-PDCCH subframes for NB-PDCCH data transmission contains 4 NB-REGs, then 1 NB-CCE in case of using predefined OFDM symbol resources for independent NB-PDCCH data transmission may be set to contain 16 NB-REGs; alternatively, equal to the number of NB-REGs contained by NB-CCEs when NB-PDCCH data is transmitted using a normal NB-PDCCH subframe, but the maximum aggregation level (Aggregation Level, simply referred to as AL) used is greater than the maximum AL used when NB-PDCCH data is transmitted using a normal NB-PDCCH subframe, e.g., the maximum AL allowed is 16 NB-CCEs when NB-PDCCH data is transmitted using a normal NB-PDCCH subframe, then the maximum AL allowed may be set to 32 NB-CCEs when NB-PDCCH data is independently transmitted using predefined OFDM symbol resources.
Similar to the first and second type subframes, there may be fewer OFDM symbols (e.g., 3 OFDM symbols) in the downlink pilot timeslot DwPTS of the TDD special subframe of the existing LTE system as well to be used as LTE PDCCH resources, so that, for the first and second type subframes, the mapping process from NB-CCE to specific NB-REG and from NB-REG to specific resource element can follow the existing technology; in this case, the first type or second type subframe resources on one time domain correspond to PRB resources on one frequency domain in the related art. Finally, the NB-REGs contained in one NB-CCE may be distributed within one first type subframe or second type subframe (centralized mapping), or may also be distributed within at least one first type subframe or at least one second type subframe or at least one first type subframe and at least one second type subframe (distributed mapping).
Furthermore, in another alternative implementation of the present embodiment, when RS transmission is performed using predefined OFDM symbol resources, the functions of the RS include: channel measurement, positioning and demodulation of physical downlink channel data; in order for the RS to achieve the above functions at the same time, the RS is preferably a Cell-specific reference signal; to simplify the joint use of the RS and the normal RS, the RS and the normal RS should use the same number of antenna ports, for example, two types of RS signals use two antenna ports; wherein, the normal RS is the existing basic Cell-specific reference signal in the system before the RS is introduced.
In addition, at least 1 first OFDM symbol resource in the first type subframe is used for RS transmission when the predefined OFDM symbol resource is used for RS transmission (when the predefined OFDM symbol resource is the first OFDM symbol resource); or, at least 1 second OFDM symbol resource in the second class of subframes is used for RS transmission (when the predefined OFDM symbol resource is a second OFDM symbol resource); alternatively, at least 1 first OFDM symbol resource in the first type subframe and at least 1 second OFDM symbol resource in the second type subframe are used for RS transmission (when the predefined OFDM symbol resources include first and second OFDM symbol resources). It is feasible to use only a portion of the first or second OFDM symbol resources (e.g., the 1 st OFDM symbol therein) but not all of the first or second OFDM symbol resources in the first or second type subframes for RS signal transmission, considering that channel estimation performance may not continue to increase beyond a threshold as the number of RSs increases.
And when the pre-defined OFDM symbol resources and the non-pre-defined OFDM symbol resources are used for carrying out NB-PSS/SSS transmission in a combined way, the first OFDM symbol resources and the non-first OFDM symbol resources in the first type subframe of the 1 transmission NB-PSS are used for carrying out NB-PSS transmission in a combined way, and the first OFDM symbol resources and the non-first OFDM symbol resources in the first type subframe of the 1 transmission NB-SSS are used for carrying out NB-SSS transmission in a combined way; in a first subframe of a transmission NB-PSS, an NB-PSS signal borne by one OFDM symbol in a first OFDM symbol resource is the same as an NB-PSS signal borne by one OFDM symbol in a non-first OFDM symbol resource; and in a first type subframe for transmitting the NB-SSS, the NB-SSS signal carried by one OFDM symbol in the first OFDM symbol resource is the same as the NB-SSS signal carried by one OFDM symbol in the non-first OFDM symbol resource. The above method achieves the effect that all OFDM symbol resources in a first subframe of a transmission NB-PSS are used for NB-PSS transmission, all OFDM symbol resources in a first subframe of a transmission NB-SSS are used for NB-SSS transmission, and an NB-PSS/SSS signal borne by a first OFDM symbol resource in the first subframe is repetition of an NB-PSS/SSS signal borne by a non-first OFDM symbol resource. The method improves the cell searching performance and simultaneously effectively reduces the complexity of design or software and hardware implementation.
When the predefined OFDM symbol resources are used for independently transmitting NB-PBCH data, NB-PBCH encoded sub-block data carried by the predefined OFDM symbol resources may be acquired according to the following procedure:
step one, determining the length Q1 according to the following equation: q1=c×d1, where C is the number of NB-PBCH encoded sub-blocks included in one NB-PBCH encoded block, and D1 is the number of NB-PBCH encoded sub-block data that can be carried by a predefined OFDM symbol resource; generating NB-PBCH coding block data with the length of Q1; and thirdly, taking data with the number of { c multiplied by D1, c multiplied by D1+1, … and (c multiplied by 1) multiplied by D1-1} in the coded block data with the length of Q1 as NB-PBCH coded sub-block data carried by a predefined OFDM symbol resource, wherein c is the number of the NB-PBCH coded sub-block transmitted on the predefined OFDM symbol resource. The NB-PBCH coding sub-block data carried by the predefined OFDM symbol resources are mapped to the predefined OFDM symbol resources in sequence according to the radio frame, the sub-frame and the OFDM symbol numbers, namely the coding sub-block data are mapped to the radio frame, the sub-frame and the OFDM symbol with the front number in priority.
When the predefined OFDM symbol resources are used to jointly transmit NB-PBCH data with non-predefined OFDM symbol resources, NB-PBCH encoded sub-block data jointly carried by the predefined OFDM symbol resources and the non-predefined OFDM symbol resources may be obtained according to the following procedure:
Step one, determining the length Q2 according to the following equation: q2=c×d2, where C is the number of NB-PBCH encoded sub-blocks included in one NB-PBCH encoded block, and D2 is the sum of the number of NB-PBCH encoded sub-block data that can be carried by a predefined OFDM symbol resource and the number of NB-PBCH encoded sub-block data that can be carried by a non-predefined OFDM symbol resource; generating NB-PBCH coding block data with the length of Q2; and thirdly, taking data with the number of { c multiplied by D2, c multiplied by D2+1, … and (c multiplied by 1) multiplied by D2-1} in NB-PBCH coding block data with the length of Q2 as NB-PBCH coding sub-block data carried by a predefined OFDM symbol resource and a non-predefined OFDM symbol resource, wherein c is the number of the NB-PBCH coding sub-block transmitted on the predefined OFDM symbol resource and the non-predefined OFDM symbol resource. The NB-PBCH coding sub-block data carried by the predefined OFDM symbol resources and the non-predefined OFDM symbol resources are mapped to the predefined and non-predefined OFDM symbol resources in sequence according to the numbers of the radio frames, the subframes and the OFDM symbols, namely the NB-PBCH coding sub-block data are mapped to the radio frames, the subframes and the OFDM symbols with the front numbers preferentially.
It should be noted that, in the present invention, the encoded block or encoded sub-block data is binary data.
When the special physical downlink channel is transmitted by using the predefined OFDM symbol resource, the special physical downlink channel is a broadcast channel, and the scheduling period of the special physical downlink channel comprises at least 1 NB-PBCH sub-block period, wherein the special physical downlink channel coding block is transmitted at least once in the scheduling period of one special physical downlink channel; the method is favorable for realizing the alignment of different downlink physical channel transmission on time domain resources, thereby further reducing the design complexity. In addition, the content carried by the dedicated physical downlink channel includes, but is not limited to, at least one of: access control information, cell handover information, TDD subframe configuration information, FDD uplink frequency configuration information, power control information, configuration information of physical channels, dedicated control information under standby operation and/or Guard-band operation (e.g., information related to Cell-specific RS configuration); that is, dedicated physical downlink channels may be used to carry some of the necessary system configuration information.
And when the pre-defined OFDM symbol resource is used for NB-PDSCH data transmission, the NB-PDSCH data comprises Paging NB-Paging data with multicast property and system information block (System Information Block, simply called SIB) data with broadcast property besides the NB-PDSCH data with unicast property; and, when using predefined OFDM symbol resources for NB-PDCCH data transmission, the NB-PDCCH data includes NB-PDCCH data of a common search space (Common Search Space, abbreviated as CSS), wherein the NB-PDCCH data of the CSS includes, but is not limited to, NB-PDCCH data for scheduling random access response (nrlowband-Random Access Response, abbreviated as NB-RAR) messages and NB-PDCCH data for scheduling NB-Paging messages.
When pre-defined OFDM symbol resources are used for carrying out NB-PDSCH data or NB-PDCCH data or special physical downlink channel data transmission, carrying out resource mapping according to Cell-specific RS of a 2-antenna port; when the pre-defined OFDM symbol resource is used for NB-PBCH data transmission, resource mapping is carried out according to the Cell-specific RS with 2 or 4 ports.
The resource mapping according to the Cell-specific RS of the 2 antenna ports is also applicable to other subframes except the first type subframe and the second type subframe, that is, from the point of view of simplified design, for the stand alone and Guard-band operation, it is preferable to fix the Cell-specific RS of the 2 antenna ports except the NB-PBCH for resource mapping. But for In-band operation, the existing LTE system Cell-specific RS is likely to be reused as NB-IOT Cell-specific RS and the existing LTE system supports Cell-specific RS (e.g., 1 or 4 ports) configured with other port numbers than 2 antenna ports, then In this case, to avoid the terminal device blindly detecting the antenna port number to reduce the device complexity, one of the following resource mapping schemes can be used: in the first mode, all data or signals are fixed and mapped according to a 4-antenna port Cell-specific RS; in the second mode, the number of Cell-specific RS antenna ports is indicated by NB-PBCH signaling, and in this case, cell-specific RS with 4 antenna ports are fixed for NB-PBCH data and mapped for other data (e.g., NB-PDSCH and NB-PDCCH data), the number of ports indicated by NB-PBCH, and Cell-specific RS with the number of ports indicated by NB-PBCH are mapped. The resource mapping according to the Cell-specific RS of the X (equal to 1, 2 or 4) antenna port means that during the resource mapping, a resource unit transmitting the Cell-specific RS of the X port will not carry data or signals, in other words, the data or signals will not be mapped onto the resource unit transmitting the Cell-specific RS of the X port.
It should be noted that, in the present embodiment, the determining resource usage mode involved in step S102 may be implemented as follows:
step S102-1: determining an operation mode to be used, wherein the operation mode comprises: guard-band operation mode and independent standby operation mode;
wherein the determination is indicative of determining that the operation mode to be used is one of the two operation modes, for example, determining that the operation mode to be used is a Guard-band operation mode or an independent standby operation mode;
step S102-2: determining a resource usage mode according to the determined operation mode;
wherein the operation mode corresponds to the resource usage mode or the determined operation mode corresponds to the determined resource usage mode; it should be noted that any of the above operation modes may be any one of the resource usage modes related to the embodiment; for example, the resource usage corresponding to Guard-band operation is for NB-PDSCH data transmission, and the resource usage corresponding to standby operation is for dedicated physical channel data transmission; alternatively, the resource usage corresponding to Guard-band operation is the same as the resource usage corresponding to Stand alone operation, for example, both are used for NB-PBCH data transmission.
From the description of the above embodiments, it will be clear to a person skilled in the art that the method according to the above embodiments may be implemented by means of software plus the necessary general hardware platform, but of course also by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) comprising instructions for causing a terminal device (which may be a mobile phone, a computer, a server, or a network device, etc.) to perform the method according to the embodiments of the present invention.
The embodiment also provides a device for using resources, which is used for implementing the above embodiment and the preferred implementation, and is not described in detail. As used below, the term "module" may be a combination of software and/or hardware that implements a predetermined function. While the means described in the following embodiments are preferably implemented in software, implementation in hardware, or a combination of software and hardware, is also possible and contemplated.
Fig. 2 is a block diagram of a resource using apparatus according to an embodiment of the present invention, as shown in fig. 2, including: a determining module 22, configured to determine a resource usage mode; wherein the resource usage pattern includes one of the following: for physical downlink control channel NB-PDCCH data transmission, for physical downlink shared channel NB-PDSCH data transmission, for primary synchronization/secondary synchronization signal NB-PSS/SSS transmission, for physical broadcast channel NB-PBCH data transmission, for reference signal RS transmission, for dedicated physical downlink channel data transmission; a transmission module 24, coupled to the determination module 22, for transmitting data or signals using predefined orthogonal frequency division multiplexing, OFDM, symbol resources in a resource usage manner, wherein the manner of transmitting data or signals includes at least one of: data or signals are transmitted by the base station and received by the terminal.
The predefined OFDM symbol resources referred to in this embodiment include at least one of: a first OFDM symbol resource, a second OFDM symbol resource; the first OFDM symbol resource is an OFDM symbol resource which is not used for NB-PSS/SSS signal transmission under In-band operation In the first type subframe, and the second OFDM symbol resource is an OFDM symbol resource which is not used for NB-PBCH data transmission under In-band operation In the second type subframe; wherein the first type of subframes are subframes for transmitting NB-PSS/SSS signals under In-band operation; the second type of subframes are subframes for transmitting NB-PBCH data In-band operation.
Wherein the first OFDM symbol resource is 2, 3 or 5 OFDM symbols in the first type subframe; the second OFDM symbol resource is 2, 3 or 5 OFDM symbols within the second class of subframes.
Based on the OFDM symbols of the first OFDM symbol resource and the second OFDM symbol resource, when the first OFDM symbol resource is 3 OFDM symbols in the first type subframe, the first type subframe includes at least one of the following: the first type of subframes are subframes with Normal cyclic prefix CP for frequency division duplex FDD; the first type of subframes are FDD subframes with Extended CP; the first type of subframes are Normal subframes with Normal CP for time division duplex TDD; the first type of subframe is a Normal subframe of TDD with Extended CP;
when the first OFDM symbol resource is 2 OFDM symbols within a subframe of a first type, the subframe of the first type includes at least one of: the first type of subframe is a special subframe of TDD with Normal CP; the first type of subframe is a special subframe of TDD with Extended CP; the first OFDM symbol resource is that 5 OFDM symbols in the first type subframe include: the first type of subframes are FDD subframes with Normal CP.
When the second OFDM symbol resource is 3 OFDM symbols within the second class subframe, the second class subframe includes at least one of: the second type of subframes are FDD subframes with Normal CP; the second type of subframes are FDD subframes with Extended CP; the second type of subframe is a Normal subframe of TDD with Normal CP; the second type of subframe is a Normal subframe of TDD with Extended CP;
When the second OFDM symbol resource is 2 OFDM symbols within the second class subframe, the second class subframe includes at least one of: the second type of subframe is a special subframe of TDD with Normal CP; the second type of subframe is a special subframe of TDD with Extended CP;
the second OFDM symbol resource is that 5 OFDM symbols in the second class of subframes include: the second type of subframes is FDD subframes with Normal CP.
Based on the above description, the transmission module 24 in this embodiment may further include: a first transmission unit for independently performing data or signal transmission using predefined OFDM symbol resources; or, a second transmission unit, configured to perform data or signal transmission by using predefined OFDM symbol resources in combination with non-predefined OFDM symbol resources.
In an optional implementation manner of this embodiment, the first transmission unit is configured to jointly use first OFDM symbol resources in K1 subframes of a first type to perform data or signal transmission, or jointly use second OFDM symbol resources in K2 subframes of a second type to perform data or signal transmission, or jointly use first OFDM symbol resources in L1 subframes of the first type and second OFDM symbol resources in L2 subframes of the second type to perform data or signal transmission; wherein K1, K2, L1 and L2 are integers greater than 0.
Note that, when the first transmission unit uses the predefined OFDM symbol resource to independently perform NB-PDSCH data transmission, one NB-PDSCH physical resource block PRB includes: first OFDM symbol resources in M1 first type subframes; or, a second OFDM symbol resource in M2 subframes of a second class; or, a first OFDM symbol resource in N1 subframes of a first type and a second OFDM symbol resource in N2 subframes of a second type; wherein M1, M2, N1 and N2 are integers greater than 1.
And in the first transmission unit, when the predefined OFDM symbol resources are used for independently transmitting NB-PDCCH data, the number of resource element groups NB-REGs included in one NB-PDCCH control channel element NB-CCE is greater than the number of NB-REGs included in NB-CCE when NB-PDCCH data is transmitted using a normal NB-PDCCH subframe, or is equal to the number of NB-REGs included in NB-CCE when NB-PDCCH data is transmitted using a normal NB-PDCCH subframe, and the maximum aggregation level AL used is greater than the maximum AL used when NB-PDCCH data is transmitted using a normal NB-PDCCH subframe; the normal NB-PDCCH subframe is a subframe in which all OFDM symbols in the subframe are used for NB-PDCCH data transmission.
Further, when the first transmission unit performs RS transmission using a predefined OFDM symbol resource, the RS function includes: channel measurement, positioning, demodulation of physical downlink channel data. The RS is a reference signal of a Cell-specific special, and has the same antenna port number as a normal RS; wherein, the normal RS is a basic Cell-specific reference signal in the system.
In addition, when the first transmission unit performs RS transmission by using predefined OFDM symbol resources, at least 1 first OFDM symbol resource in a subframe of a first type is used for RS transmission; or at least 1 second OFDM symbol resource in the second class subframe is used for RS transmission; alternatively, at least 1 first OFDM symbol resource in the first type subframe and at least 1 second OFDM symbol resource in the second type subframe are used for RS transmission.
In another optional implementation manner of this embodiment, the second transmission unit jointly uses the first OFDM symbol resources in the X1 subframes of the first class and Y1 other subframe resources to perform data or signal transmission; or, jointly using the first OFDM symbol resources and the non-first OFDM symbol resources in the X1 subframes of the first type to transmit data or signals; or, jointly using the second OFDM symbol resources in the X2 second type subframes and Y2 other subframe resources to perform data or signal transmission; or, jointly using the second OFDM symbol resources and the non-second OFDM symbol resources in the X2 second class subframes to perform data or signal transmission; or, jointly using the first OFDM symbol resources in the Z1 subframes, the second OFDM symbol resources in the Z2 subframes and the Y3 other subframe resources to perform data or signal transmission; or, jointly using the first OFDM symbol resources and non-first OFDM symbol resources in the Z1 subframes and the second OFDM symbol resources in the Z2 subframes to transmit data or signals; or, jointly using the first OFDM symbol resources in the Z1 subframes and the second OFDM symbol resources and non-second OFDM symbol resources in the Z2 subframes to perform data or signal transmission; wherein the other subframes are subframes other than the first type subframes and the second type subframes, and X1, X2, Y1, Y2, Y3, Z1, and Z2 are integers greater than 0.
In addition, it should be noted that, in this embodiment, a manner in which the predefined OFDM symbol resource is used for data or signal transmission may be predefined or indicated through signaling.
In addition, when the second transmission unit performs NB-PSS/SSS transmission by using predefined OFDM symbol resources in combination with non-predefined OFDM symbol resources, the first OFDM symbol resources and the non-first OFDM symbol resources in the first type subframe for transmitting NB-PSS are used for performing NB-PSS transmission by jointly using the first OFDM symbol resources and the non-first OFDM symbol resources in the first type subframe for transmitting NB-SSS, and NB-SSS transmission is performed by jointly using the first OFDM symbol resources and the non-first OFDM symbol resources in the first type subframe for transmitting NB-PSS, wherein in the first type subframe for transmitting NB-PSS, an NB-PSS signal carried by one OFDM symbol in the first OFDM symbol resources is the same as an NB-PSS signal carried by one OFDM symbol in the non-first OFDM symbol resources.
Optionally, in the first type subframe in which NB-SSS is transmitted, the NB-SSS signal carried by one OFDM symbol in the first OFDM symbol resource is the same as the NB-SSS signal carried by one OFDM symbol in the non-first OFDM symbol resource.
And when the first transmission unit independently performs NB-PBCH data transmission using the predefined OFDM symbol resources, determining the length Q1 according to the following equation: q1=c×d1; wherein, C is the number of NB-PBCH coding sub-blocks included in one NB-PBCH coding block, D1 is the number of NB-PBCH coding sub-block data which can be carried by a predefined OFDM symbol resource; generating NB-PBCH coding block data with the length of Q1; and taking data with the number of { c multiplied by D1, c multiplied by D1+1, … and (c multiplied by 1) multiplied by D1-1} in NB-PBCH coding block data with the length of Q1 as NB-PBCH coding sub-block data carried by a predefined OFDM symbol resource, wherein c is the number of the NB-PBCH coding sub-block transmitted on the predefined OFDM symbol resource.
And determining a length Q2 according to the following equation when the second transmission unit performs NB-PBCH data transmission using predefined OFDM symbol resources in combination with non-predefined OFDM symbol resources: q2=c×d2; wherein, C is the number of NB-PBCH coding sub-blocks included in one NB-PBCH coding block, D2 is the sum of the number of NB-PBCH coding sub-block data which can be carried by a predefined OFDM symbol resource and the number of NB-PBCH coding sub-block data which can be carried by a non-predefined OFDM symbol resource; generating NB-PBCH coding block data with the length of Q2; and taking data with the number of { c multiplied by D2, c multiplied by D2+1, … and (c multiplied by 1) multiplied by D2-1} in NB-PBCH coding block data with the length of Q2 as NB-PBCH coding sub-block data carried by the predefined OFDM symbol resource and the non-predefined OFDM symbol resource, wherein c is the number of the NB-PBCH coding sub-block transmitted on the predefined OFDM symbol resource and the non-predefined OFDM symbol resource.
When the first transmission unit uses the predefined OFDM symbol resource to transmit the special physical downlink channel, the special physical downlink channel is a broadcast channel; the scheduling period of the special physical downlink channel comprises at least 1 NB-PBCH sub-block period; and the content carried by the dedicated physical downlink channel includes at least one of: access control information, cell handover information, TDD subframe configuration information, FDD uplink frequency configuration information, power control information, physical channel configuration information, dedicated control information under standby operation, dedicated control information under Guard-band operation.
Optionally, when the first transmission unit uses predefined OFDM symbol resources for NB-PDSCH data transmission, the NB-PDSCH data includes Paging NB-Paging data and system information block SIB data; when the pre-defined OFDM symbol resources are used for NB-PDCCH data transmission, the NB-PDCCH data comprise NB-PDCCH data of a public search space CSS; when pre-defined OFDM symbol resources are used for carrying out NB-PDSCH data or NB-PDCCH data or special physical downlink channel data transmission, carrying out resource mapping according to Cell-specific RS of a 2-antenna port; when the pre-defined OFDM symbol resource is used for NB-PBCH data transmission, resource mapping is carried out according to the Cell-specific RS of the 2 or 4 antenna ports.
Optionally, the determining module 22 related to the present embodiment includes: a first determining unit configured to determine an operation mode to be used, where the operation mode includes: guard-band operation mode and independent standby operation mode; and the second determining unit is used for determining the resource using mode according to the determined operation mode.
The invention is described in detail below in connection with alternative embodiments of the invention;
example 1
Fig. 3 is a first schematic diagram of NB-PDSCH data transmission using predefined OFDM symbol resources in accordance with an alternative embodiment of the invention. As shown in fig. 3, NB-PDSCH data transmissions are performed in conjunction with other subframe resources using predefined OFDM symbol resources (including first and second OFDM symbol resources); wherein one transmission of the NB-PDSCH encoding block spans 4 radio frames, and the OFDM symbol resources allocated to the NB-PDSCH encoding block in the 4 radio frames include two parts: the first part is all OFDM symbol resources within other subframes than the 1 st subframe (equivalent to the second type subframe) and the last 1 st subframe (equivalent to the first type subframe) in every 1 radio frame, and the second part is the first 3 OFDM symbol resources (second OFDM symbol resources) within the 1 st subframe (total of 4) in every 1 radio frame and the first 3 OFDM symbol resources (first OFDM symbol resources) within the last 1 subframe (total of 4) in every 1 radio frame.
The NB-PDSCH encoded block data to be transmitted is generated from the total number of OFDM symbol resources allocated to the NB-PDSCH encoded block in the above-described 4 radio frames, and specifically to this embodiment, the total number of OFDM symbol resources allocated to the NB-PDSCH encoded block is the sum of the number of first partial OFDM symbols and the number of second partial OFDM symbols; wherein the number of the first part of OFDM symbols is 448 (the number of radio frames is 4 times the number of other subframes in every 1 radio frame is 8 times the number of OFDM symbols in every 1 other subframe is 14), the number of the second part of OFDM symbols is 24 (the number of radio frames is 4 times the number of first OFDM symbols in every 1 first subframe is 1 times the number of first OFDM symbols in every 1 subframe), the number of radio frames is 4 times the number of second subframes in every 1 radio frame is 1 times the number of second OFDM symbols in every 1 subframe), and finally the total number of OFDM symbol resources is 472; the number of the generated NB-PDSCH coding block data is equal to the number of NB-PDSCH coding block data which can be carried by 472 OFDM symbol resources; the modulated NB-PDSCH coding block data are mapped to the 472 OFDM symbol resources in sequence according to the numbers of the radio frames, the subframes and the OFDM symbols.
Fig. 4 is a second schematic diagram of NB-PDSCH data transmission using predefined OFDM symbol resources in accordance with an alternative embodiment of the invention. As shown in fig. 4, NB-PDSCH data transmissions are independently made using predefined OFDM symbol resources (including first and second OFDM symbol resources); wherein one transmission of NB-PDSCH encoded blocks spans 4 radio frames, the OFDM symbol resources allocated to NB-PDSCH encoded blocks in the 4 radio frames are the first 3 OFDM symbols (second OFDM symbol resources) in the 1 st subframe (equivalent to the second type subframe) of each 1 radio frame and the first 3 OFDM symbol resources (first OFDM symbol resources) in the last 1 subframe (equivalent to the first type subframe) of each 1 radio frame.
The NB-PDSCH encoded block data to be transmitted is generated according to the total number of OFDM symbol resources allocated to the NB-PDSCH encoded block in the above 4 radio frames, and specifically to this embodiment, the total number of OFDM symbol resources allocated to the NB-PDSCH encoded block is 24 (radio frame number 4×first type subframe number 1×first type subframe number 1×radio frame number 4×second type subframe number 1×second type subframe number 3 in each 1 of the 1 radio frames); the number of the generated NB-PDSCH coding block data is equal to the number of the NB-PDSCH coding block data which can be carried by the 24 OFDM symbol resources; the modulated NB-PDSCH coding block data are mapped to the 24 OFDM symbol resources in sequence according to the numbers of the radio frames, the subframes and the OFDM symbols.
Example two
Fig. 5 is a schematic diagram of NB-PDCCH data transmission using predefined OFDM symbol resources in accordance with an alternative embodiment of the present invention. As shown in fig. 5, NB-PDCCH data transmission is independently performed using predefined OFDM symbol resources (including first OFDM symbol and second OFDM symbol resources); wherein one transmission of NB-PDCCH encoded blocks (corresponding to one NB-PDCCH set) spans 8 radio frames and occupies at least one NB-CCE resource; when an NB-PDCCH encoded block needs to be transmitted repeatedly multiple times, for example in an enhanced coverage scenario, the encoded block may occupy multiple NB-PDCCH sets consecutively and the same NB-CCE resources in every 1 NB-PDCCH set. Taking the 1 st to 8 th radio frames as an example, the OFDM symbols allocated to the NB-PDCCH sets within the above 8 radio frames are the first 3 OFDM symbol resources (second OFDM symbol resources) within the 1 st subframe (equivalent to the second type subframe) of each 1 radio frame and the first 3 OFDM symbol resources (first OFDM symbol resources) within the last 1 subframe (equivalent to the first type subframe) of each 1 radio frame.
Specifically, in this embodiment, the total number of OFDM symbol resources allocated to the NB-PDCCH set in the above 8 radio frames is 24 (radio frame number 4×first type subframe number 1×first type subframe number 3+radio frame number 4×second type subframe number 1×second type subframe number 3 in each 1 of the 1 radio frames); the transmitted NB-PDCCH coding block data is generated according to the number of NB-CCEs (equivalent to an aggregation level AL, for example, 16 NB-CCE resources) occupied by the NB-PDCCH coding block in the NB-PDCCH set comprising 24 OFDM symbols, and the generated number of the NB-PDCCH coding block data is equal to the number of the NB-PDCCH coding block data which can be carried by the NB-CCEs with the number; the modulated NB-PDCCH coding block data are mapped to corresponding numbers of NB-CCE resources in the NB-PDCCH set according to the numbers of the NB-CCEs.
Example III
Fig. 6 is a diagram illustrating RS signal transmission using predefined OFDM symbol resources according to an alternative embodiment of the present invention. As shown in fig. 6, the predefined OFDM symbol resources include first and second OFDM symbol resources; wherein one transmission of the NB-PDSCH coding block spans 4 radio frames, and the OFDM symbol resources allocated to the NB-PDSCH coding block within the above 4 radio frame ranges are all OFDM symbol resources within the other subframes except the 1 st subframe (equivalent to the second type subframe) and the last 1 subframe (equivalent to the first type subframe) in every 1 radio frame; wherein one transmission of an RS signal using predefined OFDM symbol resources occupies the first 3 OFDM symbol resources (second OFDM symbol resources) within the 1 st subframe of a radio frame or occupies the first 3 OFDM symbol resources (first OFDM symbol resources) within the last 1 subframe of a radio frame, the RS may be used to demodulate NB-PDSCH data, i.e. in this case both a normal RS (e.g. a basic cell-specific RS already in the system before introducing the RS) and the RS may be used to demodulate NB-PDSCH data at the same time.
Example IV
Fig. 7 is a first schematic diagram of NB-PBCH data transmission using predefined OFDM symbol resources in accordance with an alternative embodiment of the present invention. As shown in fig. 7, NB-PBCH data transmission is performed using predefined OFDM symbol resources (second OFDM symbol resources) in conjunction with non-predefined OFDM symbol resources within the second type of subframe; wherein one NB-PBCH encoded sub-block transmission interval (corresponding to one NB-PBCH sub-block period) spans 8 radio frames and the NB-PBCH encoded sub-blocks within one NB-PBCH encoded sub-block transmission interval are repeatedly transmitted 8 times; one transmission of NB-PBCH encoded sub-blocks within the 8 radio frames spans 1 radio frame, and the occupied OFDM symbol resources include two parts: the first part is the other OFDM symbols than the first 3 OFDM symbols within the 1 st subframe (equivalent to the second type subframe) in the radio frame, and the second part is the first 3 OFDM symbols (second OFDM symbol resources) within the 1 st subframe in the radio frame.
The transmitted NB-PBCH coding sub-block data is acquired according to the following process:
determining a length q2=c×d2, where C is the number of NB-PBCH coding sub-blocks included in one NB-PBCH coding block, for example, the value is 8, and D2 is the number of NB-PBCH coding sub-block data that can be carried by 14 OFDM symbols in the 1 st subframe of the radio frame, which is equivalent to the sum of the number of NB-PBCH coding sub-block data carried by 3 second OFDM symbol resources and the number of NB-PBCH coding sub-block data carried by 11 non-second OFDM symbol resources in the subframe; generating NB-PBCH coding block data with the length of Q2; data with the numbers of { c×D2, c×D2+1, …, (c+1) ×D2-1} in NB-PBCH coding block data with the length of Q2 is taken as transmitted NB-PBCH coding sub-block data, wherein C is the number (the range of values from 0 to C-1) of the NB-PBCH coding sub-block transmitted on the 1 st subframe of the radio frame (namely, the current NB-PBCH coding sub-block transmission interval). The transmitted NB-PBCH coding sub-block data are mapped to 14 OFDM symbols of the 1 st sub-frame of the wireless frame in sequence according to the number of the OFDM symbols.
Example five
Fig. 8 is a second schematic diagram of NB-PBCH data transmission using predefined OFDM symbol resources in accordance with an alternative embodiment of the present invention. As shown in fig. 8, NB-PBCH data transmission is independently performed using predefined OFDM symbol resources (including first and second OFDM symbol resources); one NB-PBCH coding sub-block transmission interval (corresponding to one NB-PBCH sub-block period) spans 8 radio frames, two types of NB-PBCH resources exist in one NB-PBCH coding sub-block transmission interval, and NB-PBCH data transmission is carried out on the two types of NB-PBCH resources independently; wherein the first type NB-PBCH resources are other OFDM symbols except for the first 3 OFDM symbols of the 1 st subframe (equivalent to the second type subframe) of each 1 radio frame, and the second type NB-PBCH resources are the first 3 OFDM symbols (first OFDM symbol resources) within the last 1 subframe (equivalent to the first type subframe) and the first 3 OFDM symbols (second OFDM symbol resources) within the 1 st subframe of each 1 radio frame. In one NB-PBCH coding sub-block transmission interval, the NB-PBCH coding sub-block using the first type NB-PBCH resource is repeatedly transmitted for 8 times, and the NB-PBCH coding sub-block using the second type NB-PBCH resource is repeatedly transmitted for 16 times; within the above-mentioned 8 radio frames, one transmission of the NB-PBCH encoded sub-block using the first type NB-PBCH resources occupies other OFDM symbols than the first 3 OFDM symbols of the 1 st subframe of one radio frame, and one transmission of the NB-PBCH encoded sub-block using the second type NB-PBCH resources occupies the first 3 OFDM symbol resources within the last 1 st subframe of one radio frame or occupies the first 3 OFDM symbol resources within the 1 st subframe of one radio frame.
The NB-PBCH encoded sub-block data using the second type of NB-PBCH resources is obtained according to the following procedure:
determining a length q1=c×d1, where C is the number of NB-PBCH coding sub-blocks included in one NB-PBCH coding block, for example, the value is 8, and D1 is the number of NB-PBCH coding sub-block data that can be carried by the first 3 OFDM symbol resources in the 1 st subframe or the last 1 subframe of the radio frame; generating NB-PBCH coding block data with the length of Q1; data with the numbers of { c×D1, c×D1+1, …, (c+1) ×D1-1} in the coded block data with the length of Q1 are taken as the transmitted NB-PBCH coded sub-block data, wherein C is the number of the NB-PBCH coded sub-block transmitted on the current NB-PBCH coded sub-block transmission interval (the value range is 0 to C-1). The transmitted NB-PBCH coding sub-block data are mapped to 3 OFDM symbols in the 1 st subframe or the last 1 st subframe of the wireless frame in sequence according to the number of the OFDM symbols.
Example six
Fig. 9 is a schematic diagram of NB-PSS/SSS signaling using predefined OFDM symbol resources in accordance with an alternative embodiment of the present invention. As shown in fig. 9, NB-PSS/SSS signaling is performed using predefined OFDM symbol resources (first OFDM symbol resources) in combination with non-predefined OFDM symbol resources within the first type of subframe; wherein one NB-PBCH encoded sub-block transmission interval (corresponding to one NB-PBCH sub-block period) spans 8 radio frames and the NB-PSS/SSS within one NB-PBCH encoded sub-block transmission interval is transmitted 8 times in total; it should be noted here that since one transmission of NB-PSS/SSS may be one signal of NB-PSS and NB-SSS only and one transmission of NB-SSS is generally different from the NB-SSS signal carried by the other transmission, the above transmission 8 times cannot be understood as repeated transmission 8 times. One transmission of the NB-PSS/SSS in the 8 radio frames spans 1 radio frame, and the occupied OFDM symbol resource comprises two parts: the first part is the other OFDM symbols than the first 3 OFDM symbols within the last 1 subframe (equivalent to the first type subframe) in the radio frame, and the second part is the first 3 OFDM symbols (first OFDM symbol resources) within the last 1 subframe in the radio frame. The first 3 OFDM symbol resources (first OFDM symbol resources) within the last 1 subframe in the radio frame in which NB-PSS is transmitted are used for NB-PSS transmission, and the first 3 OFDM symbol resources (first OFDM symbol resources) within the last 1 subframe in the radio frame in which NB-SSS is transmitted are used for NB-SSS transmission.
Example seven
Fig. 10 is a schematic diagram of dedicated physical downlink channel data transmission using predefined OFDM symbol resources in accordance with an alternative embodiment of the present invention. As shown in fig. 10, dedicated physical downlink channel data transmission is independently performed using predefined OFDM symbol resources (including a first OFDM symbol resource and a second OFDM symbol resource); wherein one transmission of the dedicated physical downlink channel coding block spans 4 radio frames, and the OFDM symbol resources allocated to the dedicated physical downlink channel coding block within the above 4 radio frames are the first 3 OFDM symbols (second OFDM symbol resources) within the 1 st subframe (equivalent to the second type subframe) in each 1 radio frame and the first 3 OFDM symbols (first OFDM symbol resources) within the last 1 subframe (equivalent to the first type subframe) in each 1 radio frame.
The transmitted data of the dedicated physical downlink channel coding block is generated according to the total number of OFDM symbol resources allocated to the dedicated physical downlink channel coding block in the above 4 radio frames, specifically to the present embodiment, the total number of OFDM symbol resources allocated to the dedicated physical downlink channel coding block is 24 (the number of radio frames 4×the number of first OFDM symbols in the first type subframe 1×the number of first OFDM symbols in the second type subframe 3 in the first type subframe 1×the number of radio frames 4×the number of second OFDM symbols in the second type subframe 1×the number of second OFDM symbols 3 in the second type subframe 1 in the first type subframe); the generated data quantity of the special physical downlink channel coding blocks is equal to the data quantity of the special physical downlink channel coding blocks which can be borne by 24 OFDM symbol resources; the modulated special physical downlink channel coding block data are mapped to 24 OFDM symbol resources in sequence according to the radio frame, the subframe and the OFDM symbol number.
The embodiment of the invention also provides a storage medium. Alternatively, in the present embodiment, the above-described storage medium may be configured to store program code for performing the steps of:
s1, determining a resource using mode, wherein the resource using mode comprises one of the following steps: for physical downlink control channel (NB-Physical Downlink Control Channel, abbreviated as NB-PDCCH) data transmission, for physical downlink shared channel (NB-Physical Downlink Shared Channel, abbreviated as NB-PDSCH) data transmission, for primary synchronization/secondary synchronization Signal NB-PSS/SSS transmission, for physical broadcast channel NB-PBCH data transmission, for Reference Signal (RS) transmission, for dedicated physical downlink channel data transmission;
s2, transmitting data or signals by using predefined Orthogonal Frequency Division Multiplexing (OFDM) symbol resources according to the determined resource usage mode, wherein the mode for transmitting the data or signals comprises at least one of the following steps: data or signals are transmitted by the base station and received by the terminal.
Alternatively, specific examples in this embodiment may refer to examples described in the foregoing embodiments and optional implementations, and this embodiment is not described herein.
It will be appreciated by those skilled in the art that the modules or steps of the invention described above may be implemented in a general purpose computing device, they may be concentrated on a single computing device, or distributed across a network of computing devices, they may alternatively be implemented in program code executable by computing devices, so that they may be stored in a memory device for execution by computing devices, and in some cases, the steps shown or described may be performed in a different order than that shown or described, or they may be separately fabricated into individual integrated circuit modules, or multiple modules or steps within them may be fabricated into a single integrated circuit module for implementation. Thus, the present invention is not limited to any specific combination of hardware and software.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (31)

1. A method of using a resource, comprising:
Determining a resource usage pattern, wherein the resource usage pattern comprises one of the following: for physical downlink control channel NB-PDCCH data transmission, for physical downlink shared channel NB-PDSCH data transmission, for primary synchronization/secondary synchronization signal NB-PSS/SSS transmission, for physical broadcast channel NB-PBCH data transmission, for reference signal RS transmission, for dedicated physical downlink channel data transmission;
transmitting data or signals using predefined orthogonal frequency division multiplexing, OFDM, symbol resources in accordance with the determined resource usage pattern, wherein the pattern of transmitting the data or signals comprises at least one of: transmitting said data or said signal by a base station, receiving said data or said signal by a terminal;
wherein the predefined OFDM symbol resources include at least one of:
a first OFDM symbol resource, a second OFDM symbol resource;
wherein the first OFDM symbol resource is an OFDM symbol resource which is not used for NB-PSS/SSS signal transmission under In-band operation In a first type subframe, and the first type subframe is a subframe for NB-PSS/SSS signal transmission under In-band operation;
the second OFDM symbol resource is an OFDM symbol resource which is not used for NB-PBCH data transmission under In-band operation In the second type subframe; wherein the second type of subframes are subframes for transmitting NB-PBCH data In-band operation.
2. The method of claim 1, wherein the step of determining the position of the substrate comprises,
the first OFDM symbol resource is 2, 3 or 5 OFDM symbols in the first type subframe;
wherein, when the first OFDM symbol resource is 3 OFDM symbols in the first type subframe, the first type subframe includes at least one of the following:
the first type of subframes are subframes with Normal cyclic prefix CP of frequency division duplex FDD;
the first type of subframes are subframes of FDD with Extended CP;
the first type of subframes are Normal subframes of Time Division Duplex (TDD) with Normal CP;
the first type of subframes are Normal subframes of TDD with Extended CP;
when the first OFDM symbol resource is 2 OFDM symbols in the first type subframe, the first type subframe includes at least one of:
the first type of subframes are special subframes of TDD with Normal CP;
the first type of subframes are special subframes of TDD with Extended CP;
when the first OFDM symbol resource is 5 OFDM symbols in the first type subframe, the first type subframe includes:
the first type of subframes are FDD subframes with normcp.
3. The method of claim 2, wherein the step of determining the position of the substrate comprises,
The second OFDM symbol resource is 2, 3 or 5 OFDM symbols in the second class subframe;
wherein, when the second OFDM symbol resource is 3 OFDM symbols in the second class subframe, the second class subframe includes at least one of:
the second type of subframes are FDD subframes with normcp;
the second type of subframes are FDD subframes with Extended CP;
the second type of subframes are Normal subframes of TDD with Normal CP;
the second type of subframes are Normal subframes of TDD with Extended CP;
when the second OFDM symbol resource is 2 OFDM symbols within the second class of subframes, the second class of subframes includes at least one of:
the second type of subframes are special subframes of TDD with Normal CP;
the second type of subframes are special subframes of TDD with Extended CP;
when the second OFDM symbol resource is 5 OFDM symbols in the second class subframe, the second class subframe includes:
the second type of subframes are FDD subframes with Normal CP.
4. The method of claim 1, wherein the step of determining the position of the substrate comprises,
data or signal transmission using the predefined OFDM symbol resources is performed in the following manner:
and independently transmitting data or signals by using the predefined OFDM symbol resources, or jointly transmitting data or signals by using the predefined OFDM symbol resources and non-predefined OFDM symbol resources.
5. The method of claim 4, wherein the independently transmitting data or signals using the predefined OFDM symbol resources comprises:
carrying out data or signal transmission by jointly using the first OFDM symbol resources in the K1 subframes, or carrying out data or signal transmission by jointly using the second OFDM symbol resources in the K2 subframes, or carrying out data or signal transmission by jointly using the first OFDM symbol resources in the L1 subframes and the second OFDM symbol resources in the L2 subframes;
wherein, K1, K2, L1 and L2 are integers greater than 0.
6. The method of claim 4, wherein the using the predefined OFDM symbol resources in conjunction with non-predefined OFDM symbol resources for data or signal transmission comprises:
carrying out data or signal transmission by jointly using first OFDM symbol resources in X1 subframes and Y1 other subframe resources, or carrying out data or signal transmission by jointly using first OFDM symbol resources in X1 subframes and non-first OFDM symbol resources in X1 subframes, or carrying out data or signal transmission by jointly using second OFDM symbol resources in X2 subframes and Y2 other subframe resources, or carrying out data or signal transmission by jointly using second OFDM symbol resources in X2 subframes and non-second OFDM symbol resources in X2 subframes, or carrying out data or signal transmission by jointly using first OFDM symbol resources in Z1 subframes, second OFDM symbol resources in Z2 subframes and Y3 other subframe resources, or carrying out data or signal transmission by jointly using first OFDM symbol resources in Z1 subframes and non-first OFDM symbol resources in Z2 subframes and second OFDM symbol resources in Z2 subframes, or carrying out data or signal transmission by jointly using second OFDM symbol resources in Z1 subframes and non-first OFDM symbol resources in Z2 subframes;
Wherein the other subframes are subframes other than the first type subframes and the second type subframes, and the X1, X2, Y1, Y2, Y3, Z1, and Z2 are integers greater than 0.
7. The method according to claim 4, characterized in that the manner in which the data or signal transmission using the predefined OFDM symbol resources is performed is predefined or signaled.
8. The method of claim 4, wherein one NB-PDSCH physical resource block PRB when NB-PDSCH data transmissions are independently performed using the predefined OFDM symbol resources comprises:
first OFDM symbol resources in M1 subframes of the first type; or, second OFDM symbol resources in M2 subframes of the second class; or, a first OFDM symbol resource in N1 subframes of the first type and a second OFDM symbol resource in N2 subframes of the second type;
wherein M1, M2, N1 and N2 are integers greater than 1.
9. The method of claim 4, wherein when NB-PDCCH data transmission is performed independently using the predefined OFDM symbol resources, a number of resource element groups NB-REGs included in one NB-PDCCH control channel element NB-CCE is greater than a number of NB-REGs included in NB-CCEs when NB-PDCCH data is transmitted using a normal NB-PDCCH subframe or equal to a number of NB-REGs included in NB-CCEs when NB-PDCCH data is transmitted using a normal NB-PDCCH subframe, and a maximum aggregation level AL used is greater than a maximum AL used when NB-PDCCH data is transmitted using a normal NB-PDCCH subframe; the normal NB-PDCCH subframe is a subframe in which all OFDM symbols in the subframe are used for NB-PDCCH data transmission.
10. The method according to claim 1, wherein the RS function comprises, when RS transmission is performed using the predefined OFDM symbol resources: channel measurement, positioning, demodulation of physical downlink channel data.
11. The method of claim 1, wherein the RS is a Cell-specific reference signal when RS transmission is performed using the predefined OFDM symbol resources.
12. The method according to claim 1, wherein when RS transmission is performed using the predefined OFDM symbol resources, the RS has the same number of antenna ports as a normal RS; wherein the normal RS is a Cell-specific reference signal specific to a basic Cell in the system.
13. The method of claim 1, wherein at least 1 first OFDM symbol resource in the first type subframe is used for RS transmission when using the predefined OFDM symbol resources for the RS transmission; or at least 1 second OFDM symbol resource in the second class subframe is used for the RS transmission; alternatively, at least 1 first OFDM symbol resource in the first type subframe and at least 1 second OFDM symbol resource in the second type subframe are used for the RS transmission.
14. The method of claim 4, wherein, when using the predefined OFDM symbol resources in conjunction with non-predefined OFDM symbol resources for NB-PSS/SSS transmissions,
and carrying out NB-PSS transmission by jointly using the first OFDM symbol resources and the non-first OFDM symbol resources in the first type subframe of the 1 transmission NB-PSS, and carrying out NB-SSS transmission by jointly using the first OFDM symbol resources and the non-first OFDM symbol resources in the first type subframe of the 1 transmission NB-SSS.
15. The method of claim 14, wherein in a first type of subframe in which NB-PSS is transmitted, an NB-PSS signal carried by one of the first OFDM symbol resources is the same as an NB-PSS signal carried by one of the non-first OFDM symbol resources.
16. The method of claim 15, wherein in a first type of subframe in which NB-SSS is transmitted, an NB-SSS signal carried by one of the first OFDM symbol resources is the same as an NB-SSS signal carried by one of the non-first OFDM symbol resources.
17. The method of claim 4, wherein, when the pre-defined OFDM symbol resources are used for NB-PBCH data transmission independently,
The length Q1 is determined according to the following equation: q1=c×d1; wherein, the C is the number of NB-PBCH coding sub-blocks included in one NB-PBCH coding block, and the D1 is the number of NB-PBCH coding sub-block data that can be carried by the predefined OFDM symbol resource; generating NB-PBCH coding block data with the length of Q1; and taking data with the number of { c multiplied by D1, c multiplied by D1+1, …, (c multiplied by 1) multiplied by D1-1} in the NB-PBCH coding block data with the length of Q1 as NB-PBCH coding sub-block data carried by the predefined OFDM symbol resource, wherein c is the number of the NB-PBCH coding sub-block transmitted on the predefined OFDM symbol resource.
18. The method of claim 4, wherein, when using the predefined OFDM symbol resources in conjunction with non-predefined OFDM symbol resources for NB-PBCH data transmission,
the length Q2 is determined according to the following equation: q2=c×d2; wherein, the C is the number of NB-PBCH coding sub-blocks included in one NB-PBCH coding block, and the D2 is the sum of the number of NB-PBCH coding sub-block data which can be carried by the predefined OFDM symbol resource and the number of NB-PBCH coding sub-block data which can be carried by the non-predefined OFDM symbol resource; generating NB-PBCH coding block data with the length of Q2;
Taking data with the number of { c multiplied by D2, c multiplied by D2+1, …, (c multiplied by 1) multiplied by D2-1} in NB-PBCH coding block data with the length of Q2 as NB-PBCH coding sub-block data carried by the predefined OFDM symbol resources and the non-predefined OFDM symbol resources, wherein c is the number of the NB-PBCH coding sub-block transmitted on the predefined OFDM symbol resources and the non-predefined OFDM symbol resources.
19. The method of claim 1, wherein the dedicated physical downlink channel is a broadcast channel when dedicated physical downlink channel transmissions are made using the predefined OFDM symbol resources.
20. The method of claim 1, wherein the scheduling period of the dedicated physical downlink channel comprises at least 1 NB-PBCH sub-block period when dedicated physical downlink channel transmissions are made using the predefined OFDM symbol resources.
21. The method of claim 1, wherein, in using the predefined OFDM symbol resources for dedicated physical downlink channel transmission,
the content carried by the dedicated physical downlink channel comprises at least one of the following:
access control information, cell handover information, TDD subframe configuration information, FDD uplink frequency configuration information, power control information, physical channel configuration information, dedicated control information under standby operation, dedicated control information under Guard-band operation.
22. The method of claim 1, wherein, when NB-PDSCH data transmissions are made using the predefined OFDM symbol resources,
the NB-PDSCH data includes Paging NB-Paging data and system information block SIB data.
23. The method of claim 1, wherein, when using the predefined OFDM symbol resources for NB-PDCCH data transmission,
the NB-PDCCH data includes NB-PDCCH data of a common search space CSS.
24. The method of claim 1, wherein when NB-PDSCH data or NB-PDCCH data or dedicated physical downlink channel data transmission is performed using the predefined OFDM symbol resources, resource mapping is performed in accordance with a Cell-specific RS of a 2 antenna port; and when the pre-defined OFDM symbol resources are used for carrying out NB-PBCH data transmission, resource mapping is carried out according to Cell-specific RS of 2 or 4 antenna ports.
25. The method of claim 1, wherein determining the resource usage pattern comprises:
determining an operation mode to be used, wherein the operation mode comprises: guard-band operation mode and independent standby operation mode;
And determining the resource using mode according to the determined operation mode.
26. A resource using apparatus, comprising:
the determining module is used for determining a resource using mode; wherein the resource usage pattern includes one of the following: for physical downlink control channel NB-PDCCH data transmission, for physical downlink shared channel NB-PDSCH data transmission, for primary synchronization/secondary synchronization signal NB-PSS/SSS transmission, for physical broadcast channel NB-PBCH data transmission, for reference signal RS transmission, for dedicated physical downlink channel data transmission;
a transmission module, configured to transmit data or signals using predefined orthogonal frequency division multiplexing OFDM symbol resources according to the determined resource usage manner, where the manner of transmitting the data or the signals includes at least one of: transmitting said data or said signal by a base station, receiving said data or said signal by a terminal;
wherein the predefined OFDM symbol resources include at least one of:
a first OFDM symbol resource, a second OFDM symbol resource;
wherein the first OFDM symbol resource is an OFDM symbol resource which is not used for NB-PSS/SSS signal transmission under In-band operation In a first type subframe, and the first type subframe is a subframe for NB-PSS/SSS signal transmission under In-band operation;
The second OFDM symbol resource is an OFDM symbol resource which is not used for NB-PBCH data transmission under In-band operation In the second type subframe; wherein the second type of subframes are subframes for transmitting NB-PBCH data In-band operation.
27. The apparatus of claim 26, wherein the transmission module comprises:
a first transmission unit, configured to independently perform data or signal transmission using the predefined OFDM symbol resources; or alternatively, the process may be performed,
and a second transmission unit, configured to perform data or signal transmission by using the predefined OFDM symbol resource in combination with a non-predefined OFDM symbol resource.
28. The apparatus of claim 27, wherein the device comprises a plurality of sensors,
the first transmission unit is further configured to jointly use first OFDM symbol resources in K1 subframes of the first type to perform data or signal transmission, or jointly use second OFDM symbol resources in K2 subframes of the second type to perform data or signal transmission, or jointly use first OFDM symbol resources in L1 subframes of the first type and second OFDM symbol resources in L2 subframes of the second type to perform data or signal transmission;
wherein, K1, K2, L1 and L2 are integers greater than 0.
29. The apparatus of claim 27, wherein the device comprises a plurality of sensors,
the second transmission unit is further configured to perform data or signal transmission by jointly using a first OFDM symbol resource in the X1 first type subframe and Y1 other subframe resources, or jointly using a first OFDM symbol resource in the X1 first type subframe and a non-first OFDM symbol resource, or jointly using a second OFDM symbol resource in the X2 second type subframe and Y2 other subframe resources, or jointly using a second OFDM symbol resource in the X2 second type subframe and a non-second OFDM symbol resource, or jointly using a first OFDM symbol resource in the Z1 first type subframe, a second OFDM symbol resource in the Z2 second type subframe and Y3 other subframe resources, or jointly using a first OFDM symbol resource in the Z1 first type subframe and a non-first OFDM symbol resource and a second OFDM symbol resource in the Z2 second type subframe, or jointly using a second OFDM symbol resource in the Z1 second type subframe and a second OFDM symbol resource in the Z2 second type subframe, or a data or a non-signal transmission in the Z2 second type subframe;
Wherein the other subframes are subframes other than the first type subframes and the second type subframes, and the X1, X2, Y1, Y2, Y3, Z1, and Z2 are integers greater than 0.
30. The apparatus of claim 27, wherein the manner in which the data or signal transmission using the predefined OFDM symbol resources is predefined or signaled.
31. The apparatus of claim 26, wherein the device comprises a plurality of sensors,
when the transmission module uses the predefined OFDM symbol resource to perform dedicated physical downlink channel transmission, the content borne by the dedicated physical downlink channel comprises at least one of the following:
access control information, cell handover information, TDD subframe configuration information, FDD uplink frequency configuration information, power control information, physical channel configuration information, dedicated control information under standby operation, dedicated control information under Guard-band operation.
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