CN106900006A - Signal processing method and device - Google Patents

Abstract

The present invention provides a signal processing method and device, wherein the method includes: determining the narrowband control channel resource; performing group pairing of resource units in the determined narrowband control channel resource, and performing group pairing of resource units carried on the group paired resource units The signal is processed. The present invention solves the problem of waste of resources and low resource utilization when the control channel unit determined in the prior art is used for signal transmission, and further achieves the determination of a more suitable control channel resource unit in the narrowband system. The waste of resources is avoided, and the effect of improving resource utilization efficiency is achieved.

Description

Signal processing method and device

technical field

The present invention relates to the communication field, in particular, to a signal processing method and device.

Background technique

Machine Type Communication (MTC for short) is also called Machine to Machine (M2M for short), and NarrowBand Internet of Things (NB-IoT for short) is currently the main application form of the Internet of Things. This type of communication system is usually characterized by a narrower bandwidth, such as 1.4MHz, 200kHz, etc., compared with a Long Term Evolution (LTE) system; a large number of user terminals or equipment (User Equipment, UE for short), Including traditional handheld terminals, machines, sensor terminals, etc.; there is a need for coverage improvement, including coverage improvement of 15dB or 20dB.

This type of communication system usually requires that it can work independently or coexist with the LTE system. Among them, the transmission bandwidth and downlink subcarrier spacing of NB-IoT are 180kHz and 15kHz respectively, which are the same as the bandwidth and subcarrier spacing of a Physical Resource Block (PRB) in the LTE system, which is beneficial to the NB-IoT system. Reuse the relevant design of the existing LTE system, when the Global system for Mobile Communication (GSM) spectrum reused by the NB-IoT system is adjacent to the spectrum of the LTE system, it is also conducive to reducing the mutual interference between the two systems .

In the existing LTE system, a downlink grant (DL grant for short) and an uplink grant (UpLink grant, UL grant for short) are respectively used to schedule downlink data transmission and uplink data transmission of a terminal. The DL grant and the UL grant are collectively referred to as downlink control information (Downlink Control Information, referred to as DCI), using a physical downlink control channel (Physical Downlink Control Channel, referred to as PDCCH) or an enhanced physical downlink control channel (Enhanced Physical Downlink Control Channel, referred to as EPDCCH) bearer. Downlink data is carried on a downlink traffic channel (Physical Downlink Shared Channel, PDSCH for short), and uplink data is carried on an uplink traffic channel (Physical Uplink Shared Channel, PUSCH for short). In the existing LTE system, the PDCCH uses the resources in the first 1-4 Orthogonal Frequency Division Multiplexing (OFDM) symbols in the system bandwidth, and uses the Control Channel Element (CCE) as the basic aggregation Resource granularity, the transmission mode uses transmit diversity. The EPDCCH uses resources in some PRBs in the system bandwidth, uses Enhanced Control Channel Element (ECCE for short) as the basic aggregation resource granularity, and adopts centralized transmission or distributed transmission in the transmission mode.

Since the downlink transmission method uses the transmit diversity method, it needs to be applicable to three working scenarios at the same time (in-band in the frequency band of the LTE system, guard-band in the guard-band of the LTE system, and standalone in the independent use frequency band). The control channels in the existing LTE system are not suitable for the requirements of the narrowband system. When the control channel unit determined in the prior art is used for signal transmission, it will cause waste of resources and low resource utilization. For the NB-IoT system with a narrow bandwidth, how to support the transmission of the downlink control channel in the above three scenarios using transmit diversity and how to determine the control channel unit of the downlink control channel in the narrowband system currently lacks an effective solution.

For the problems of resource waste and low resource utilization rate when the control channel unit determined in the prior art is used for signal transmission, no effective solution has been proposed so far.

Contents of the invention

The present invention provides a signal processing method and device to at least solve the problems of resource waste and low resource utilization rate when the control channel unit determined in the prior art is used for signal transmission.

According to one aspect of the present invention, a signal processing method is provided, including: determining a narrowband control channel resource; performing group pairing of resource units in the determined narrowband control channel resource, and performing group pairing of resource units carried on the group paired resource units The signal is processed.

Optionally, performing group pairing of resource units in the determined narrowband control channel resources includes at least one of the following: performing group pairing of resource units in the same resource unit group; performing group pairing of resource units in the same control channel unit The resource units in the group are grouped and paired; the resource units in different control channel units are grouped and paired.

Optionally, grouping and pairing resource units in the same resource unit group includes at least one of the following: grouping and pairing an even number of resource units in the same resource unit group; grouping and pairing all resource units in the same resource unit group Make group pairings.

Optionally, grouping and pairing resource units in different resource unit groups in the same control channel unit includes at least one of the following: pairing resource units adjacent in frequency domain in an even number of resource unit groups in the same control channel unit Perform group pairing; perform group pairing on resource units adjacent to each other in the frequency domain in all resource unit groups in the same control channel unit.

Optionally, performing group pairing of resource units in different control channel units includes at least one of the following: performing group pairing of resource units in resource unit groups adjacent to frequency domains in different even-numbered control channel units adjacent to frequency domains ; Perform group pairing on the resource units in the resource unit groups adjacent to each other in the frequency domain in all control channel units.

Optionally, when the pilot type is at least one of narrowband reference signal NB-RS, long-term evolution cell reference signal LTE CRS, and long-term evolution demodulation reference signal LTE DMRS, the resource element group in the narrowband control channel resource It is determined by at least one of the following methods: the resource elements RE in a physical resource block PRB other than the resource occupied by the pilot are repeated in the frequency domain from low to high in the frequency domain in the order of frequency domain first and then time domain 0- X, REs with the same sequence number form the same resource unit group, where X is a positive integer; for the REs in a PRB other than the resources occupied by the pilot, the frequency domain is first followed by the time domain in the frequency domain From low to high, the same sequence number is repeated N times consecutively, numbering 0-Y, and REs with the same sequence number form the same resource element group, where the N is an even number and Y is a positive integer; there is no pilot in a PRB On the occupied OFDM symbols, M1 resource element groups are determined in the frequency domain from low to high or from high to low in units of N consecutive REs; on the OFDM symbols occupied by the pilot, in In the frequency domain, M2 resource unit groups are determined in units of consecutive N REs or non-consecutive N REs from low to high or from high to low, or REs that are not at the edge of the frequency domain when there are an odd number of REs remaining in the frequency domain Or two consecutive REs in the frequency domain form M3 resource unit groups of N RE size from low to high or from high to low in the frequency domain, wherein the M1, M2, M3, and Z are all positive integers, and the N is an even number.

Optionally, the value of N is at least one of the sets {2, 4, 8}; and/or, the values of M1, M2, and M3 are all set {1, 2, 3, 4, 5, 6} at least one.

Optionally, the control channel unit is composed of more than two resource unit groups, wherein, when the number of the resource unit groups is an integer multiple of 4, the resource units in each control channel unit in a subframe or a PRB are composed The number of groups is the same, wherein, the resource element groups in each control channel element are selected at equal intervals in all resource element groups or continuously selected or partially consecutively selected at equal intervals; and/or, when the resource element groups When the number of is a non-integer multiple of 4, the number of resource element groups in each control channel element constituting one subframe or one PRB is not exactly the same.

Optionally, when the number of resource unit groups is a non-integer multiple of 4, the number of resource unit groups in each control channel unit constituting a subframe or a PRB is determined by a fixed composition method or a dynamic composition method, where The dynamic composition method includes at least one of determining through system information block SIB or radio resource control RRC configuration, implicitly determining according to subframe number, implicitly determining according to radio frame number, and implicitly determining according to detection window number Way.

Optionally, when a resource element RE contained in a group of resource element groups conflicts with other signals or channels, it is determined whether the RE or the resource element group to which the RE belongs is available in at least one of the following ways: according to the predefined Determine the priority of at least one of the RE, the resource element group to which the RE belongs, the control channel unit to which the RE belongs, the control channel to which the RE belongs, and the other signal or channel; determine according to the signaling notification Determine the availability of at least one of the RE, the resource element group to which the RE belongs, the control channel unit to which the RE belongs, and the control channel to which the RE belongs, wherein the signaling includes a system information block SIB or wireless Resource Control RRC.

Optionally, the availability of at least one of the RE, the resource element group to which the RE belongs, the control channel unit to which the RE belongs, and the control channel to which the RE belongs includes at least one of the following: the resource unit to which the RE belongs The group is unavailable; in the resource element group to which the RE belongs, only the RE and the paired RE paired with the RE are unavailable; in the resource element group to which the RE belongs, only the RE is unavailable, wherein the RE The REs other than the RE in the resource element group to which it belongs use single-port transmission or are paired with the remaining REs in other resource element groups, and the control channel unit to which the RE belongs is unavailable; the control channel to which the RE belongs is unavailable use.

Optionally, the number of resource unit groups included in a control channel unit is determined according to at least one of subframe type, application scenario, and cyclic prefix type, including at least one of the following: the number is greater than the control The number of resource unit groups included in the channel unit; when the one control channel unit uses the same resource unit group as the common subframe, the number is configured with a larger aggregation level.

Optionally, determining the number of resource unit groups included in one control channel unit according to the application scenario includes: when the application scenario is an In-band scenario located within the frequency band of the Long Term Evolution LTE system, the one control channel unit The number of resource unit groups included is greater than the number of resource unit groups included in the control channel unit when the application scenario is independently using the frequency band standalone and/or the application scenario is located in the guard-band of the LTE system.

According to another aspect of the present invention, a signal processing device is provided, including: a determining module, configured to determine narrowband control channel resources; a processing module, configured to perform group pairing of resource units in the determined narrowband control channel resources , and process the signals carried on the resource units that are grouped together.

According to another aspect of the present invention, a base station is provided, and the base station includes the above-mentioned signal processing apparatus.

According to another aspect of the present invention, a terminal is provided, and the terminal includes the above-mentioned signal processing apparatus.

According to the present invention, the narrowband control channel resources are determined; grouping of resource units is performed in the determined narrowband control channel resources, and signals carried on the resource units of grouping pairing are processed. It solves the problem of waste of resources and low resource utilization when the control channel unit determined by the prior art is used for signal transmission, and then achieves the determination of a more suitable control channel resource unit in the narrowband system, avoiding waste of resources , to improve resource utilization efficiency.

Description of drawings

The accompanying drawings described here are used to provide a further understanding of the present invention and constitute a part of the application. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations to the present invention. In the attached picture:

Fig. 1 is a flowchart of a signal processing method according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of grouping and pairing of resource units according to Embodiment 1 of the present invention;

FIG. 3 is a schematic diagram of grouping and pairing of resource units according to Embodiment 2 of the present invention;

FIG. 4 is a schematic diagram of grouping and pairing of resource units according to Embodiment 3 of the present invention;

FIG. 5 is a schematic diagram of grouping and pairing of resource units according to Embodiment 5 of the present invention;

FIG. 6 is a schematic diagram of grouping and pairing of resource units according to Embodiment 6 of the present invention;

FIG. 7 is a schematic diagram of grouping and pairing of resource units according to Embodiment 7 of the present invention;

FIG. 8 is a schematic diagram of grouping and pairing of resource units according to Embodiment 8 of the present invention;

FIG. 9 is a schematic diagram of grouping and pairing of resource units according to Embodiment 9 of the present invention;

FIG. 10 is a schematic diagram of grouping and pairing of resource units according to Embodiment 10 of the present invention;

Fig. 11 is a structural block diagram of a signal processing device according to an embodiment of the present invention;

FIG. 12 is a structural block diagram of a processing module 114 in a signal processing device according to an embodiment of the present invention;

FIG. 13 is a structural block diagram of the first packet pairing unit 122 in the signal processing device according to an embodiment of the present invention;

FIG. 14 is a structural block diagram of the second packet pairing unit 124 in the signal processing device according to an embodiment of the present invention;

FIG. 15 is a structural block diagram of a third packet pairing unit 126 in a signal processing device according to an embodiment of the present invention;

Fig. 16 is a structural block diagram of a base station according to an embodiment of the present invention;

Fig. 17 is a structural block diagram of a terminal according to an embodiment of the present invention.

detailed description

Hereinafter, the present invention will be described in detail with reference to the drawings and examples. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

It should be noted that the terms "first" and "second" in the description and claims of the present invention and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence.

In this embodiment, a signal processing method is provided. FIG. 1 is a flowchart of a signal processing method according to an embodiment of the present invention. As shown in FIG. 1, the process includes the following steps:

Step S102, determining narrowband control channel resources;

Step S104, perform group pairing of resource units in the determined narrowband control channel resources, and process signals carried on the grouped resource units.

Through the above steps, the resource units are grouped and paired in the determined narrowband control channel resources, and the resource units after the group paired are used for signal processing, and the resource units can be effectively used for signal transmission by grouping and pairing the resource units, Thereby effectively avoiding resource waste, solving the problems of waste of resources and low resource utilization when the control channel unit determined by the prior art is used for signal transmission, and then achieving the determination of a more suitable control channel resource unit in the narrowband system The effect of avoiding the waste of resources and improving the efficiency of resource use.

Wherein, it may be a base station or a terminal that performs the above operations. When the above operation is performed by the base station, processing the signal carried on the resource unit of the group pair may include performing layer mapping and precoding on the signal carried on the resource unit of the group pair, and sending the processed signal to the Corresponding terminal; when the above operation is performed by the terminal, processing the signal carried on the resource unit of the packet pair may include receiving the signal carried on the corresponding resource unit, and performing corresponding decoding and other processing on the signal. Wherein, the above-mentioned layer mapping and precoding processing methods include a transmit diversity mode Space Frequency Block Code (Space Frequency Block Code, referred to as SFBC), a frequency selection transmit diversity SFBC+FSTD mode (frequency switch transmit diversity, Frequency Switch Transmit Diversity, referred to as FSTD), time selection transmit diversity SFBC+TSTD mode (time switched transmit diversity, Time Switched Transmit Diversity, referred to as TSTD).

In an optional embodiment, performing group pairing of resource units in the determined narrowband control channel resources includes at least one of the following: performing group pairing on resource units in the same resource unit group; performing group pairing on the same control channel unit The resource units in different resource unit groups are grouped and matched; the resource units in different control channel units are grouped and matched. It should be noted that the grouping and pairing methods of the above-mentioned resource units are examples, and other grouping and pairing methods can also be used. The above-mentioned grouping and pairing methods of the resource units are described below:

In an optional embodiment, grouping and pairing resource units in the same resource unit group includes at least one of the following: grouping and pairing an even number of resource units in the same resource unit group; All resource units in are grouped and paired. Wherein, in the above method of grouping and pairing even-numbered resource units in the same resource unit group, the "even-numbered resource units" may be adjacent even-numbered resource units, wherein "adjacent" may include numbered Adjacent, adjacent in the frequency domain, adjacent in the time domain, adjacent in the priority frequency domain and then adjacent in the time domain, etc.; , the closest in the frequency domain, the closest in the time domain, the closest in the frequency domain and the closest in the time domain, etc.

In an optional embodiment, grouping and pairing resource units in different resource unit groups in the same control channel unit includes at least one of the following: Adjacent resource units are grouped and paired; resource units adjacent to each other in the frequency domain in all resource unit groups in the same control channel unit are grouped and paired.

In an optional embodiment, grouping and pairing resource units in different control channel units includes at least one of the following: grouping resource units in groups of resource units adjacent to frequency domains in different even-numbered control channel units adjacent to frequency domains The resource units are grouped and paired; the resource units in the frequency domain adjacent resource unit groups in all control channel units are grouped and matched.

The above-mentioned grouping and pairing manner of resource units is illustrated as an example below:

For example, the method for determining the same group of SFBC-coded resource elements (Resource Elements, referred to as REs) when the above-mentioned control channel unit and/or resource element group transmits the diversity transmission mode includes one of the following methods:

An even number of REs in the same resource unit group;

REs in an even number of adjacent resource element groups in the frequency domain in the same control channel element;

REs in frequency-domain adjacent resource element groups in different even-numbered frequency-domain adjacent control channel elements.

In an optional embodiment, when the type of pilot is narrowband reference signal (NarrowBand Reference Signal, NB-RS for short), long-term evolution cell reference signal LTE CRS (Cell Reference Signal), long-term evolution demodulation reference signal LTE When at least one of DMRS (Demodulation Reference Signal), the resource element group in the above-mentioned narrowband control channel resources is determined by at least one of the following methods: for resource elements in a physical resource block PRB other than the resource occupied by the pilot REs are numbered 0-X repeatedly in the frequency domain from low to high in the order of the first frequency domain and then the time domain. REs with the same sequence number form the same resource unit group, where X is a positive integer; The REs other than the resources occupied by the frequency range from low to high in the frequency domain in the order of the frequency domain first and then the time domain, and are numbered 0-Y by repeating the same serial number N times continuously, and the REs with the same serial number form the same resource unit group. N is an even number, and Y is a positive integer; for an OFDM symbol that is not occupied by the pilot in a PRB, it is determined in units of consecutive N REs in the frequency domain from low to high or from high to low M1 resource unit groups; M2 resource unit groups are determined in units of consecutive N REs or non-consecutive N REs from low to high or from high to low in the frequency domain on OFDM symbols occupied by pilots, or, When there are an odd number of REs remaining in the frequency domain, REs that are not at the edge of the frequency domain or 2 consecutive REs in the frequency domain are used to form M3 resource unit groups of N RE size from low to high or from high to low in the frequency domain, where, M1, M2, M3, and Z are all positive integers, and N is an even number. Among them, the NB-RS is suitable for demodulation pilots dedicated to the narrowband NB-IoT system, and can be of a cell-common type, such as a CRS type; or can be a UE-specific type, such as a DMRS type. Wherein, the pilot port corresponding to the above-mentioned pilot may include at least one of ports 1, 2, and 4.

For example, for an OFDM symbol not occupied by pilots in a PRB, three resource element groups are determined in the frequency domain from low to high in units of 4 consecutive REs, and for OFDM symbols occupied by pilots in the frequency domain by From low to high, 1 or 2 resource unit groups are determined in units of 4 consecutive REs or 2 consecutive groups of two adjacent REs, or REs that are not at the edge of the frequency domain or 2 consecutive REs in the frequency domain are used when an odd number of REs remain in the frequency domain 1 or 2 resource unit groups of 4 RE sizes are formed in the frequency domain from low to high. In the PRB, each resource element group is numbered in the order of the frequency domain first and then the time domain.

In an optional embodiment, the value of the above-mentioned N is at least one of the set {2, 4, 8}; in another optional embodiment, the values of the above-mentioned M1, M2, and M3 can be all is at least one of the set {1, 2, 3, 4, 5, 6}. Of course, the value set listed in this embodiment is only a preferred embodiment, and other value sets can also be used.

In an optional embodiment, the control channel unit is composed of more than two resource unit groups, wherein, when the number of resource unit groups is an integer multiple of 4, each control channel unit in a subframe or a PRB consists of The number of resource unit groups is the same, wherein, the resource unit groups in each of the above-mentioned control channel units are selected at equal intervals in all resource unit groups or continuously selected or partially consecutively selected at equal intervals, for example, 1 subframe contains When there are 36 narrowband resource element groups NB-REG (or also called MREG, M at this time means MTC machine type communication), at this time 4 narrowband control channel units NB-CCE (or also called MCCE, at this time The M represents MTC machine type communication) NB-CCEs contain 9 NB-REGs respectively, preferably, NB-REGs are selected at equal intervals. For example: For a resource unit group composed of 4 REs, the NB-REG is divided into 36, considering that the unavailable REs are scattered as much as possible, the NB-REG numbers for 1 MCCE are {0, 4, 8, 12, 16, 20 , 24, 28, 32}. That is, NB-REGs are selected at equal intervals. It is also possible to continuously select NB-REGs to form NB-CCEs. For example: the NB-REG numbers for one MCCE are {0, 1, 2, 3, 4, 5, 6, 7, 8}. It is also possible to select NB-REGs to form NB-CCEs by selecting NB-REGs partly continuous and partly at equal intervals. For example: the NB-REG numbers for one MCCE are {0, 1, 8, 9, 16, 17, 24, 25, 32}.

Similarly, for 2 REs or 8 REs to form a resource unit group, the method is similar.

Similarly, it can also be used when EREG forms ECCE, and the method is similar.

It should be noted that, in the embodiments stated in the present invention, "control channel element" may be a general designation of CCE, ECCE, NB-CCE, and MCCE. The "resource element group" may be a collective name of REG, enhanced resource element group (Enhanced Resource Element Group, EREG for short), NB-REG, and MREG.

In another optional embodiment, when the number of resource element groups is a non-integer multiple of 4, the number of resource element groups in each control channel element constituting one subframe or one PRB is not exactly the same. Optionally, when the above-mentioned number of resource unit groups is a non-integer multiple of 4, the number of resource unit groups in each control channel unit constituting a subframe or a PRB is determined by a fixed composition method or a dynamic composition method, wherein, The dynamic composition method includes configuring through a System Information Block (SIB for short) or a Radio Resource Control (RRC for short), implicitly determining according to a subframe number, implicitly determining according to a radio frame number, The manner in which the determination is made based on at least one of the implicit determinations of the detection window number. For example, if there are 38 NB-REGs in 1 subframe, 4 NB-CCEs can allocate the number of NB-REGs fixedly at this time, such as NB-CCE0 and 1 contain 10 (or other numbers, or NB-CCE0 The number of NB-CCE1 and NB-CCE1 can also be different) NB-REG, NB-CCE2, 3 both contain 9 (or other numbers, or, the number of NB-CCE2 and NB-CCE3 can also be different) NB-REG, this It is preferable to select NB-REGs at equal intervals. Or determine the number of NB-REGs contained in NB-CCE according to the subframe number, such as NB-CCE0 and 1 in even subframes contain 10 (or other numbers, or, the number of NB-CCE0 and NB-CCE1 can also be different ) NB-REG, NB-CCE2 and 3 both contain 9 (or other numbers, or the number of NB-CCE2 and NB-CCE3 can also be different) NB-REG, NB-CCE2 and 3 in odd subframes contain 10 (or other numbers, or the number of NB-CCE2 and NB-CCE3 can also be different) NB-REG, NB-CCE0, 1 both contain 9 (or other numbers, or, NB-CCE0 and NB-CCE1 The number can also be different) NB-REG.

In an optional embodiment, when a resource element RE contained in a group of resource element groups conflicts with other signals or channels, it may be determined whether the RE or the resource element group to which the RE belongs is available in at least one of the following ways: Determine according to the priority of at least one of the predefined RE, the resource element group to which the RE belongs, the control channel unit to which the RE belongs, the control channel to which the RE belongs, and other signals or channels; Determine the availability of at least one of the resource element group to which the RE belongs, the control channel unit to which the RE belongs, and the control channel to which the RE belongs, wherein the above signaling includes a system information block SIB or a radio resource control RRC. Optionally, the availability of at least one of the RE, the resource element group to which the RE belongs, the control channel unit to which the RE belongs, and the control channel to which the RE belongs includes at least one of the following: the resource element group to which the RE belongs is unavailable; the resource unit to which the RE belongs Only REs in the group and the paired REs paired with this RE are unavailable; only REs are unavailable in the resource unit group to which the RE belongs, and the other REs in the resource unit group to which the RE belongs use single-port transmission or use The remaining REs in other resource unit groups are used in pairs; the control channel unit to which the RE belongs is unavailable; the control channel to which the RE belongs is unavailable. E.g:

The traditional physical downlink control channel Legacy PDCCH has high priority, and the narrowband physical downlink control channel NB-PDCCH does not use the entire NB-REG occupied by the legacy PDCCH. The Legacy CRS has high priority, and there are 2, 3, and 3 REs left in the NB-REG in the OFDM symbol where it is located (2, 3, and 3 REs are left in order from low to high). (1) Cross-NB-REG pairing SFBC is performed on the same NB-CCE for REGs with odd REGs, that is, two REs are paired in NB-REG0, and 3REs in NB-REG4 and NB-REG12 are paired with each other. (2) For better SFBC, one adjacent RE is deleted from the NB-REG of the remaining 3 REs, and the remaining two REs are paired and coded.

If the PRB where NB-IoT is located is configured with CSI-RS, the number of ports is at most 2 or 4. Referring to the existing port pattern, there will be 1 or 2 NB-REGs with remaining 3REs. Regardless of whether it is based on NB-CRS or LTE CRS, when the CSI-RS is configured in the PRB, the number of available REs in the NB-REG will be reduced to 3. (1) Odd-numbered REs in two NB-REGs are paired coded; (2) REs adjacent to the CSI-RS are deleted, and the remaining 2 REs in the NB-REG are paired coded. (3) Destroy CSI-RS.

The OFDM symbols where the PRSs are located appear in pairs and are spaced apart by 5 REs, resulting in 3RE odd-numbered RE remaining in 2 NB-REGs among the 2 or 3 NB-REGs on the OFDM symbol. (1) Encoding is performed by pairing REs across NB-REGs within NB-CCE; (2) The REs adjacent to CSI-RS are deleted, and the remaining 2 REs in NB-REGs are paired and encoded. (3) Destroy the PRS.

In an optional embodiment, the number of resource unit groups contained in a control channel unit is determined according to at least one of subframe type, application scenario, and cyclic prefix type, including at least one of the following: the above-mentioned number is greater than the normal The number of resource unit groups contained in the control channel unit in the subframe; when a control channel unit uses the same resource unit group as a normal subframe, the above number is configured with a larger aggregation level. E.g:

For the special subframe and in the normal cyclic prefix (Cyclic Prefix, CP for short), when the special subframe is configured with 3, 4, and 8, the processing is the same as that of the normal normal subframe. For special subframe configurations 1, 2, 6, 7, and 9, use the following methods:

(1) 1NB-CCE=18NB-REG (existing method, expanding the number of NB-REGs included in NB-CCE);

(2) Configure a larger aggregation level (that is, NB-CCE contains the same number of NB-REGs as the normal subframe, and configure a larger aggregation level in special subframes);

When extending the CP, regardless of the special subframe or the normal subframe, the following methods are used:

(1) 1NB-CCE=18NB-REG (existing method, expanding the number of NB-REGs included in NB-CCE);

(2) Configure a larger aggregation level (that is, NB-CCE contains the same number of NB-REGs as the normal subframe, and configure a larger aggregation level in special subframes);

And similar to the existing protocol, only configurations 1, 2, 3, 5, and 6 are supported when using special subframes when extending the CP;

For the Standalone/guard-band scenario, it is the physical broadcast channel (Physical Broadcast Channel, referred to as PBCH)/primary synchronization signal (Primary Synchronization Signal, referred to as PSS)/secondary synchronization signal (Secondary Synchronization Signal, referred to as SSS) in the subframe before 3 OFDM symbols, and 0, 5 for common CP and 0, 4 for extended CP in the special subframe, as follows:

(1) 1NB-CCE=36NB-REG (existing method, expanding the number of NB-REGs included in NB-CCE);

(2) Configure a larger aggregation level, such as AL=4ECCE.

In an optional embodiment, the determination of the number of resource unit groups contained in one control channel unit according to the application scenario includes: when the above application scenario is an In-band scenario located within the frequency band of the Long Term Evolution LTE system, the above one control channel The number of resource unit groups included in the unit is greater than the number of resource unit groups included in the control channel unit when the application scenario is independently using the frequency band standalone and/or the application scenario is located in the guard-band of the LTE system. For example: 1NB-CCE=18NB-REG in In-band scenario, 1NB-CCE=9NB-REG in standalone or guard-band scenario. Or 1NB-CCE=8NB-REG in the In-band scenario, 1NB-CCE=4NB-REG in the standalone or guard-band scenario.

The present invention is described below in conjunction with specific embodiment:

Embodiment one

This embodiment is aimed at the case where the DMRS is based and the number of ports is 4. The REs in a PRB except the resources occupied by the DMRS are numbered 0-X1 repeatedly in the order of the frequency domain first and then the time domain, and the REs with the same sequence number form the same resource element group.

Optionally, X1=15. Four resource element groups form one control channel element. Downlink transmits in a transmit diversity manner, and performs SFBC coding on adjacent REs in the same EREG (that is, performs group pairing on adjacent REs in the same EREG).

In order to realize the transmit diversity transmission mode, SFBC coding is performed on adjacent REs in the same EREG. FIG. 2 is a schematic diagram of grouping and pairing of resource units according to Embodiment 1 of the present invention. As shown in FIG. 2, since one EREG contains 9 REs, at this time one RE is destroyed (also called wasting one RE, that is, One RE is not used) to complete 4 sets of SFBC encoding. At this time, REs of the same pair of SFBC codes are not adjacent.

By using the method described in this embodiment, the transmit diversity transmission mode is realized when the resource element group has an odd number of REs. There is a waste of resources at this point.

Embodiment two

This embodiment is aimed at the case where the DMRS is based and the number of ports is 4. The REs in a PRB except the resources occupied by the DMRS are repeatedly numbered 0-X2 in the order of the frequency domain first and then the time domain, and the REs with the same sequence number form the same resource element group.

Optionally, X2=15. Four resource element groups form one control channel element. The downlink uses transmit diversity for transmission, and SFBC encoding is performed on adjacent REs in two adjacent EREGs in the same ECCE.

In order to realize the transmit diversity transmission mode, the same OFDM symbol or adjacent OFDM symbols and adjacent EREG REs in the frequency domain of one ECCE are paired for SFBC coding. This operation can solve the pairing RE problem. FIG. 3 is a schematic diagram of grouping and pairing of resource units according to Embodiment 2 of the present invention. As shown in FIG. 3 , 9 sets of SFBC coding are completed by using REs in 2 adjacent REGs in 1 ECCE. At this time, REs of the same pair of SFBC codes are not adjacent.

By using the method described in this embodiment, the transmit diversity transmission mode is realized when the resource element group has an odd number of REs. Realize resource pairing and use without waste.

Embodiment three

This embodiment is aimed at the case where the DMRS is based and the number of ports is 4. The REs in a PRB except the resources occupied by the DMRS are repeatedly numbered 0-X2 in the order of the frequency domain first and then the time domain, and the REs with the same sequence number form the same resource element group.

Optionally, X2=15. Four consecutive resource element groups constitute a control channel element, for example, ECCE0 is composed of EREG0, 1, 2, and 3. The downlink is transmitted using transmit diversity, and SFBC coding is performed on adjacent REs in two or four adjacent EREGs in the same ECCE.

In order to realize the transmit diversity transmission mode, the same OFDM symbol or adjacent OFDM symbols and adjacent EREG REs in the frequency domain of one ECCE are paired for SFBC coding. This operation can solve the pairing RE problem. FIG. 4 is a schematic diagram of grouping and pairing of resource units according to Embodiment 3 of the present invention. As shown in FIG. 4 , 9 sets of SFBC coding are completed by using REs in 2 or 4 adjacent REGs in one ECCE. At this time, REs of the same pair of SFBC codes are adjacent.

By using the method described in this embodiment, the transmit diversity transmission mode is realized when the resource element group has an odd number of REs. Realize resource pairing and use without waste. And the paired resource units are adjacent in the frequency domain.

Embodiment Four

This embodiment is aimed at the case where the DMRS is based and the number of ports is 4. The REs in a PRB except for the resources occupied by the DMRS are repeatedly numbered 0-X3 in the order of the frequency domain first and then the time domain, and the REs with the same sequence number form the same resource element group.

Optionally, X3=15. Four resource element groups form one control channel element. The downlink uses transmit diversity for transmission, and SFBC encoding is performed on adjacent REs in two adjacent EREGs among 2 or 4 ECCEs.

In order to realize the transmit diversity transmission mode, the same OFDM symbol and REs of adjacent EREGs in the frequency domain of two ECCEs are paired for SFBC coding. This operation can solve the pairing RE problem. As shown in Figure 4 above, EREG0 of ECCE0 and RE of EREG1 of ECCE1 are paired to encode SFBC at this time. At this time, 9 groups of SFBC coding are completed by using one of the two ECCEs and the REs in the adjacent EREGs in the frequency domain. At this time, REs of the same pair of SFBC codes are adjacent in the frequency domain.

By using the method described in this embodiment, the transmit diversity transmission mode is realized when the resource element group has an odd number of REs. Realize resource pairing and use without waste. And the paired resource units are adjacent in the frequency domain.

Embodiment five

This embodiment is aimed at the case where the DMRS is based and the number of ports is 4. For the REs in a PRB except for the resources occupied by the DMRS, the same sequence number 0-Y is repeated four times consecutively in the order of the frequency domain and then the time domain, and the REs with the same sequence number form the same resource element group.

Optionally, Y=35. 9 resource element groups constitute a control channel element. The downlink uses transmit diversity for transmission, and SFBC coding is performed on adjacent REs in one NB-REG in one NB-CCE. 1NB-CCE=9NB-REG. (At this time, if the number of DMRS ports is 2 and port7 and 8, Y=38)

Considering that the unavailable REs are dispersed as much as possible, the NB-REG numbers for 1ECCE are {0, 4, 8, 12, 16, 20, 24, 28, 32}. That is, NB-REGs are selected at equal intervals.

In order to realize the transmit diversity transmission mode, the REs of the same NB-REG are paired for SFBC coding. This operation can solve the pairing RE problem. FIG. 5 is a schematic diagram of group pairing of resource units according to Embodiment 5 of the present invention. As shown in FIG. 5 , the RE pair codes in each NB-REG are SFBC. At this time, there are still NB-REGs separated by DMRS, and the SFBC at 4Tx will span OFDM symbols (OFDM symbols at pilot positions).

By using the method described in this embodiment, the transmit diversity transmission mode is realized in the same resource unit group. Realize resource pairing and use without waste. And most of the paired resource units are adjacent in the frequency domain.

Embodiment six

This embodiment is aimed at the case where the DMRS is based and the number of ports is 2. For the OFDM symbols not occupied by pilots in a PRB, 3 resource element groups are determined in the frequency domain from low to high in the unit of 4 REs, and in the OFDM symbols occupied by pilots in the frequency domain from low to high Determine 1 or 2 resource unit groups in units of 4 consecutive REs or 2 consecutive groups of two adjacent REs, or use non-edge REs in the frequency domain or 2 consecutive REs in the frequency domain when an odd number of REs remain in the frequency domain. to high to form groups of 1 or 2 resource units of size 4 REs. In the PRB, each resource element group 0-Z1 is numbered in the order of the frequency domain first and then the time domain.

Optionally, Z1=37. The RE with the lowest number in the frequency domain at the OFDM symbol where the pilot is located is not used to form a resource element group. 9 or 10 resource element groups constitute a control channel element. The downlink uses transmit diversity for transmission, and SFBC coding is performed on adjacent REs in one NB-REG in one NB-CCE.

Considering that the unavailable REs are dispersed as much as possible, the NB-REG numbers for 1NB-CCE are {0, 4, 8, 12, 16, 20, 24, 28, 32, 36}. That is, NB-REGs are selected at equal intervals.

In order to realize the transmit diversity transmission mode, the REs of the same NB-REG are paired for SFBC coding. This operation can solve the pairing RE problem. FIG. 6 is a schematic diagram of grouping and pairing of resource units according to Embodiment 6 of the present invention. As shown in FIG. 6 , RE pairing coding SFBC in each NB-REG. At this time, the OFDM symbols where the paired REs are located are all the same, and the situation of crossing OFDM symbols does not occur.

By using the method described in this embodiment, the transmit diversity transmission mode is realized in the same resource unit group. Resource pairing is realized but there is a waste of resources. And the paired resource units are adjacent in the frequency domain.

Embodiment seven

This embodiment is aimed at the situation based on two pilot types at the same time. There are DMRS and CRS at the same time. This embodiment takes DMRS with 2 ports and 2 CRS ports as an example. There are actually 4 combinations, 2, 4-port CRS and 2, 4-port DMRS.

For the OFDM symbols not occupied by pilots in a PRB, 3 resource element groups are determined in the frequency domain from low to high in the unit of 4 REs, and in the OFDM symbols occupied by pilots in the frequency domain from low to high Determine 1 or 2 resource unit groups in units of 4 consecutive REs or 2 consecutive 2 REs, or when an odd number of REs remain in the frequency domain, use REs that are not at the edge of the frequency domain or 2 consecutive REs in the frequency domain from low to high in the frequency domain 1 or 2 resource unit groups of 4 RE sizes are formed. In the PRB, each resource element group 0-Z2 is numbered in the order of the frequency domain first and then the time domain. Those with CRS are divided into two REGs, and those with DMRS are divided into two REGs.

Optionally, Z2=33. In the OFDM symbol where the pilot is located, except for the REs occupied by the pilot, the remaining REs are determined from low to high in the frequency domain. The remaining REs outside the REs are odd-numbered and the RE with the lowest number in the time-frequency domain is not used to form a resource unit group, and the remaining REs form two resource unit groups. 8 or 9 resource element groups constitute a control channel element. The downlink uses transmit diversity for transmission, and SFBC coding is performed on adjacent REs in one NB-REG in one NB-CCE.

Considering that the unavailable REs are dispersed as much as possible, the NB-REG numbers for 1NB-CCE are {0, 4, 8, 12, 16, 20, 24, 28, 32}. That is, NB-REGs are selected at equal intervals.

In order to realize the transmit diversity transmission mode, the REs of the same NB-REG are paired for SFBC coding. This operation can solve the pairing RE problem. FIG. 7 is a schematic diagram of group pairing of resource units according to Embodiment 7 of the present invention. As shown in FIG. 7 , the RE pair codes in each NB-REG are SFBC. At this time, the OFDM symbols where the paired REs are located are all the same, and the situation of crossing OFDM symbols does not occur.

By using the method described in this embodiment, the transmit diversity transmission mode is realized in the same resource unit group. Resource pairing is realized but there is a waste of resources. And the paired resource units are adjacent in the frequency domain.

Embodiment eight

This embodiment is based on CRS and the number of ports is 2. FIG. 8 is a schematic diagram of grouping and pairing of resource units according to Embodiment 8 of the present invention. FIG. 8 shows two schematic diagrams of NB-CRS or LTE CRS (that is, in FIG. 8 (a) and (b)). The REs in a PRB except the resources occupied by the CRS are repeatedly numbered 0-X4 in the order of the frequency domain first and then the time domain, and the REs with the same sequence number form the same resource element group.

Optionally, X4=7. One resource element group consists of 19 REs, two resource element groups constitute one control channel element, and NB-REGs included in NB-CCE0 are {0, 4}. The downlink uses transmit diversity for transmission.

Adjacent REs in the same NB-REG perform SFBC coding. In order to realize transmit diversity transmission mode, SFBC coding is performed on adjacent REs in the same NB-REG. Since 1 NB-REG contains 19 REs, one RE is discarded/wasted at this time to complete 9 sets of SFBC encoding. At this time, REs of the same pair of SFBC codes are not adjacent.

Or perform SFBC coding on adjacent REs in two adjacent NB-REGs in the same NB-CCE. In order to realize the transmit diversity transmission mode, the same OFDM symbol and REs of adjacent NB-REGs in the frequency domain of one NB-CCE are paired for SFBC coding. This operation can solve the pairing RE problem. At this time, 19 sets of SFBC coding are completed by using REs in two adjacent REGs in one NB-CCE. At this time, REs of the same pair of SFBC codes are not adjacent.

Or perform SFBC coding on adjacent REs in two adjacent NB-REGs in 2 or 4 ECCEs. In order to realize the transmit diversity transmission mode, the same OFDM symbol and the REs of adjacent NB-REGs in the frequency domain of two NB-CCEs are paired for SFBC coding. This operation can solve the pairing RE problem. At this time, the NB-REG0 of NB-CCE0 is paired with the RE of NB-REG1 of NB-CCE1 to code SFBC. At this time, one of the two NB-CCEs and the REs in the adjacent NB-REGs in the frequency domain are used to complete nine sets of SFBC coding. At this time, REs of the same pair of SFBC codes are adjacent in the frequency domain.

By using the method described in this embodiment, all REs except pilots can be used as control channel elements or resource element groups when CRS pilots are used, and transmit diversity transmission mode can be realized when resource element groups have an odd number of REs.

Embodiment nine

This embodiment is aimed at the case where the CRS is based and the number of ports is 2. FIG. 9 is a schematic diagram of grouping and pairing of resource units according to Embodiment 9 of the present invention. FIG. 9 shows two schematic diagrams of NB-CRS or LTE CRS (ie, (a) and (b) in FIG. 9 ). For an OFDM symbol that is not occupied by pilots in a PRB, determine 3 resource element groups in the frequency domain from low to high in the unit of 4 REs; Two consecutive RE groups are used as a unit to determine two resource unit groups. Each resource element group 0-Z3 is numbered in the order of the frequency domain first and then the time domain in the PRB.

Optionally, Z3=37. 9 or 10 resource element groups constitute a control channel element. The downlink uses transmit diversity for transmission, and SFBC coding is performed on adjacent REs in one NB-REG in one NB-CCE.

Considering that the unavailable REs are scattered as far as possible, select NB-REGs at equal intervals. For example: NB-REG numbers for 1NB-CCE are {0, 4, 8, 12, 16, 20, 24, 28, 32, 36}.

At this time, there are 38 NB-REGs in total. When fixed allocation is adopted, NB-CCE0 and 1 in one PRB contain 10 NB-REGs, and NB-CCE2 and 3 contain 9 NB-REGs, as shown in Table 8. Among them, NB-REG0 and NB-REG1 are usually occupied by Legacy PDCCH in Inband scenarios, and NB-CCE0 and NB-CCE1 are additionally added in standalone/guard-band.

Dynamic allocation: perform dynamic allocation according to at least one of subframe number, wireless frame number, detection window number, and the like. Considering that the repeated transmission of the control channel uses the same NB-CCE, the resources used should be as equal as possible. Taking subframe numbers as an example, the resource mapping in even subframes is shown in Table 1. In odd subframes, NB-CCE2 and 3 allocate 10 NB-REGs, and NB-CCE0 and 1 allocate 9 NB-REGs.

Table 1

In order to realize the transmit diversity transmission mode, the REs of the same NB-REG are paired for SFBC coding. This operation can solve the pairing RE problem. The pair of REs in each NB-REG encodes SFBC. At this time, the OFDM symbols where the paired REs are located are all the same, and the situation of crossing OFDM symbols does not occur.

By using the method described in this embodiment, the transmit diversity transmission mode is realized in the same resource unit group. Realize resource pairing. And the paired resource units are adjacent in the frequency domain. In addition, by adjusting the number of resource unit groups constituting the control channel unit in different subframes, the resources using the same control channel unit during repeated transmission may be as equal as possible.

Embodiment ten

This embodiment is aimed at the situation based on CRS and the number of ports is 4. FIG. 10 is a schematic diagram of group pairing of resource units according to Embodiment 10 of the present invention. FIG. 10 shows two schematic diagrams of NB-CRS or LTE CRS (as shown in (a) and (b) in FIG. 10 ). For an OFDM symbol that is not occupied by pilots in a PRB, determine 3 resource element groups in the frequency domain from low to high in the unit of 4 REs; Two consecutive RE groups are used as a unit to determine two resource unit groups. Each resource element group 0-Z4 is numbered in the order of the frequency domain first and then the time domain in the PRB.

Optionally, Z4=35. 9 or 10 resource element groups constitute a control channel element. The downlink uses transmit diversity for transmission, and SFBC coding is performed on adjacent REs in one NB-REG in one NB-CCE.

Considering that the unavailable REs are scattered as far as possible, select NB-REGs at equal intervals. For example: NB-REG numbers for 1NB-CCE are {0, 4, 8, 12, 16, 20, 24, 28, 32, 36}.

At this time, there are 36 NB-REGs in total, and as shown in Table 2, each NB-REG contains 9 NB-REGs. Among them, the NB-REG with a lower number is usually occupied by the Legacy PDCCH in the Inband scenario, and each NB-REG can be used by the NB-CCE in the standalone/guard-band scenario.

Table 2

In order to realize the transmit diversity transmission mode, the REs of the same NB-REG are paired for SFBC coding. This operation can solve the pairing RE problem. The pair of REs in each NB-REG encodes SFBC. At this time, the OFDM symbols where the paired REs are located are all the same, and the situation of crossing OFDM symbols does not occur.

By using the method described in this embodiment, the transmit diversity transmission mode is realized in the same resource unit group. Realize resource pairing. And the paired resource units are adjacent in the frequency domain.

In the fifth embodiment to the tenth embodiment above, N=4 is taken as an example for illustration. For the scenario of N=2, it is suitable for the scenario of 2-antenna port transmission. If N=2 is used for 4-antenna port transmission, the same group of SFBC codes uses two adjacent resource unit groups, or different time when executing SFBC+FSTD Choose a different resource unit group.

Through the description of the above embodiments, those skilled in the art can clearly understand that the method according to the above embodiments can be implemented by means of software plus a necessary general-purpose hardware platform, and of course also by hardware, but in many cases the former is better implementation. Based on such an understanding, the essence of the technical solution of the present invention or the part that contributes to the prior art can be embodied in the form of software products, and the computer software products are stored in a storage medium (such as ROM/RAM, disk, CD) contains several instructions to enable a terminal device (which may be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods described in various embodiments of the present invention.

A signal processing device is also provided in this embodiment, and the device is used to implement the above embodiments and preferred implementation modes, and what has been described will not be repeated here. As used below, the term "module" may be a combination of software and/or hardware that realizes a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, implementations in hardware, or a combination of software and hardware are also possible and contemplated.

Fig. 11 is a structural block diagram of a signal processing device according to an embodiment of the present invention. As shown in Fig. 11, the device includes a determination module 112 and a processing module 114, and the device will be described below.

The determination module 112 is used to determine the narrowband control channel resource; the processing module 114 is connected to the above determination module 112, and is used to perform group pairing of resource units in the determined narrowband control channel resource, and carry out the resource unit on the group paired resource unit signal is processed.

Fig. 12 is a structural block diagram of the processing module 114 in the signal processing device according to an embodiment of the present invention. When performing grouping and pairing of resource units in the determined narrowband control channel resources, the processing module 114 includes at least one of the following units:

The first group pairing unit 122 is configured to group and pair resource units in the same resource unit group; the second group pairing unit 124 is to group and pair resource units in different resource unit groups in the same control channel unit; The three-group pairing unit 126 performs group pairing on resource units in different control channel units.

Fig. 13 is a structural block diagram of the first group pairing unit 122 in the signal processing device according to an embodiment of the present invention. As shown in Fig. 13, the first group pairing unit 122 includes at least one of the following subunits:

The first group pairing subunit 132 is used to group and pair even resource units in the same resource unit group; the second group pair subunit 134 is used to group and pair all resource units in the same resource unit group .

Fig. 14 is a structural block diagram of the second group pairing unit 124 in the signal processing device according to an embodiment of the present invention. As shown in Fig. 14, the second group pairing unit 124 includes at least one of the following subunits:

The third group pairing subunit 142 is used to group and pair the resource units adjacent to the frequency domain in the even number of resource unit groups in the same control channel unit; the fourth group pairing subunit 144 is used to pair the same control channel unit The resource units adjacent to each other in the frequency domain in all the resource unit groups in the channel unit are grouped and paired.

Fig. 15 is a structural block diagram of a third group pairing unit 126 in a signal processing device according to an embodiment of the present invention. As shown in Fig. 15 , the third group pairing unit 126 includes at least one of the following subunits:

The fifth group pairing subunit 152 is used to group and pair the resource units in the frequency domain adjacent resource unit groups among different even-numbered control channel units adjacent to the frequency domain; the sixth group pairing subunit 154 is used to pair The resource units in the resource unit groups adjacent to each other in the frequency domain in all control channel units are grouped and paired.

In an optional embodiment, when the pilot type is at least one of narrowband reference signal NB-RS, long-term evolution cell reference signal LTE CRS, and long-term evolution demodulation reference signal LTE DMRS, the narrowband control channel resource The resource element group is determined by at least one of the following methods: the resource element RE in a physical resource block PRB except the resource occupied by the pilot is in the frequency domain from low to high in the order of frequency domain and time domain Repeat the number 0-X, and REs with the same sequence number form the same resource unit group, where X is a positive integer; for the REs in a PRB other than the resources occupied by the pilot, the frequency domain is first followed by the time domain. From low to high in the field, the same serial number is repeated N times consecutively, numbering 0-Y, and REs with the same serial number form the same resource element group, where N is an even number and Y is a positive integer; there is no such pilot in a PRB On the occupied Orthogonal Frequency Division Multiplexing OFDM symbols, M1 resource unit groups are determined in the frequency domain from low to high or from high to low in units of N consecutive REs; on the OFDM symbols occupied by pilots, the frequency domain From low to high or from high to low, M2 resource unit groups are determined in units of consecutive N REs or non-consecutive N REs, or, when there are an odd number of REs remaining in the frequency domain, use non-frequency domain edge REs or frequency Two consecutive REs in the frequency domain form M3 resource unit groups of N RE size from low to high or from high to low in the frequency domain, wherein the above-mentioned M1, M2, M3, and Z are all positive integers, and N is an even number.

In an optional embodiment, the value of the above N is at least one of the sets {2, 4, 8}; and/or, the values of M1, M2, and M3 are all set {1, 2, 3, 4, 5, 6} at least one.

In an optional embodiment, the control channel unit is composed of more than two resource unit groups, wherein, when the number of the above resource unit groups is an integer multiple of 4, each control channel unit in a subframe or a PRB is composed The number of resource unit groups in each control channel unit is the same, wherein, the resource unit groups in each of the above-mentioned control channel units are selected at equal intervals or continuously selected or partially consecutively selected at equal intervals in all resource unit groups; and/or, when the above-mentioned resources When the number of element groups is a non-integer multiple of 4, the numbers of resource element groups in each control channel element constituting one subframe or one PRB are not exactly the same.

In an optional embodiment, when the above-mentioned number of resource unit groups is a non-integer multiple of 4, the number of resource unit groups in each control channel unit constituting a subframe or a PRB is fixedly composed or dynamically composed The method is determined, wherein the dynamic composition method includes at least one of system information block SIB or radio resource control RRC configuration, implicit determination according to the subframe number, implicit determination according to the radio frame number, and implicit determination according to the detection window number - A way to make the determination.

In an optional embodiment, when a resource element RE contained in a group of resource element groups conflicts with other signals or channels, it may be determined whether the RE or the resource element group to which the RE belongs is available in at least one of the following ways: according to Determine the priority of at least one of the predefined RE, the resource element group to which the RE belongs, the control channel unit to which the RE belongs, the control channel to which the RE belongs, and other signals or channels; the RE and the resource unit group to which the RE belongs are determined according to the signaling notification , the control channel unit to which the RE belongs, and the availability of at least one of the control channel to which the RE belongs, wherein the above signaling includes a system information block SIB or a radio resource control RRC.

In an optional embodiment, the availability of at least one of the RE, the resource element group to which the RE belongs, the control channel unit to which the RE belongs, and the control channel to which the RE belongs includes at least one of the following: the resource element group to which the RE belongs is unavailable; In the resource unit group to which the RE belongs, only the RE and the paired RE paired with the RE are unavailable; in the resource unit group to which the above-mentioned RE belongs, only the RE is unavailable, and the other REs in the resource unit group to which the RE belongs are used Single-port transmission or paired with the remaining REs in other resource element groups; the control channel element to which the RE belongs is unavailable; the control channel to which the RE belongs is unavailable.

In an optional embodiment, the number of resource unit groups contained in a control channel unit is determined according to at least one of subframe type, application scenario, and cyclic prefix type, including at least one of the following: the above-mentioned number is greater than the normal The number of resource unit groups contained in the control channel unit in the subframe; when the above-mentioned one control channel unit uses the same resource unit group as the common subframe, the above-mentioned number is configured with a larger aggregation level.

In an optional embodiment, determining the number of resource unit groups included in a control channel unit according to the application scenario includes: when the above application scenario is an In-band scenario located within the frequency band of the Long Term Evolution LTE system, a control The number of resource unit groups included in the channel unit is greater than the number of resource unit groups included in the control channel unit when the application scenario is independently using the frequency band standalone and/or the application scenario is located in the guard-band of the LTE system.

FIG. 16 is a structural block diagram of a base station according to an embodiment of the present invention. As shown in FIG. 16 , the base station 162 includes any one of the signal processing apparatuses 164 described above.

FIG. 17 is a structural block diagram of a terminal according to an embodiment of the present invention. As shown in FIG. 17 , the terminal 172 includes any one of the signal processing apparatus 164 described above.

It should be noted that each of the above-mentioned modules can be implemented by software or hardware. For the latter, it can be implemented in the following manner, but not limited to this: the above-mentioned modules are all located in the same processor; or, the above-mentioned modules are respectively located in multiple in the processor.

The embodiment of the invention also provides a storage medium. Optionally, in this embodiment, the above-mentioned storage medium may be configured to store program codes for performing the following steps:

S1. Determine narrowband control channel resources;

S2. Perform group pairing of resource units in the determined narrowband control channel resource, and process signals carried on the grouped resource units.

Optionally, in this embodiment, the above-mentioned storage medium may include but not limited to: U disk, read-only memory (Read-Only Memory, referred to as ROM), random access memory (Random Access Memory, referred to as RAM), mobile Various media that can store program codes, such as hard disks, magnetic disks, or optical disks.

Optionally, in this embodiment, the processor executes the steps in the foregoing method embodiments according to the program code stored in the storage medium.

Optionally, for specific examples in this embodiment, reference may be made to the examples described in the foregoing embodiments and optional implementation manners, and details are not repeated in this embodiment.

Obviously, those skilled in the art should understand that each module or each step of the above-mentioned present invention can be realized by a general-purpose computing device, and they can be concentrated on a single computing device, or distributed in a network formed by multiple computing devices Alternatively, they may be implemented in program code executable by a computing device so that they may be stored in a storage device to be executed by a computing device, and in some cases in an order different from that shown here The steps shown or described are carried out, or they are separately fabricated into individual integrated circuit modules, or multiple modules or steps among them are fabricated into a single integrated circuit module for implementation. As such, the present invention is not limited to any specific combination of hardware and software.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (16)

1. a kind of signal processing method, it is characterised in that including：

Determine arrowband control channel resource；

It is determined that the arrowband control channel resource in carry out Resource Unit packet pairing, and to packet pairing The signal carried on Resource Unit is processed.

2. method according to claim 1, it is characterised in that it is determined that the arrowband control channel resource in carry out The packet pairing of Resource Unit includes at least one of：

Packet pairing is carried out to the Resource Unit in same resource unit group；

Packet pairing is carried out to the Resource Unit in different resource unit group in same control channel unit；

Packet pairing is carried out to the Resource Unit in different control channel units.

3. method according to claim 2, it is characterised in that carried out to the Resource Unit in same resource unit group Packet pairing includes at least one of：

Packet pairing is carried out to the even number Resource Unit in same resource unit group；

All Resource Units in same resource unit group carry out packet pairing.

4. method according to claim 2, it is characterised in that to different resource unit in same control channel unit Resource Unit in group carries out packet pairing includes at least one of：

The Resource Unit adjacent to the frequency domain in the even number resource unit group in same control channel unit is carried out Packet pairing；

The Resource Unit adjacent to the frequency domain in all resource unit groups in same control channel unit is divided It is right to assemble.

5. method according to claim 2, it is characterised in that carried out to the Resource Unit in different control channel units Packet pairing includes at least one of：

Resource in the adjacent resource unit group of the control channel unit frequency domain adjacent to different even number frequency domains Unit carries out packet pairing；

Resource Unit in the resource unit group adjacent to all control channel unit frequency domains carries out packet pairing.

6. method according to claim 2, it is characterised in that when the type of pilot tone be narrowband reference signal NB-RS, When at least one of Long Term Evolution cell reference signals LTE CRS, Long Term Evolution demodulated reference signal LTE DMRS, Resource unit group in the arrowband control channel resource is determined at least one in the following way：

To the Resource Unit RE in a Physical Resource Block PRB in addition to the resource that the pilot tone takes according to first frequency The order of time domain repeats numbering 0-X from low to high on frequency domain behind domain, and sequence number identical RE constitutes same resource list Tuple, wherein, the X is positive integer；

To in a PRB except the pilot tone take resource in addition to RE according to first frequency domain after time domain order frequency On domain from low to high, same money is constituted to continuously repeat n times same sequence number numbering 0-Y, sequence number identical RE Set of source, wherein, the N is even number, and Y is positive integer；

To in a PRB without the pilot tone take orthogonal frequency division multiplex OFDM symbol on frequency domain by it is low to Height or from high to low the M1 resource unit group of determination in units of continuous N number of RE；Having what the pilot tone took From low to high or from high to low with the continuous N number of RE of N number of RE or discontinuous as single on frequency domain in OFDM symbol Position determines M2 resource unit group, or, on frequency domain during residue odd number RE with the RE at non-frequency domain edge or Continuous 2 RE constitute M3 Resource Unit of N number of RE sizes in frequency domain from low to high or from high to low on frequency domain Group, wherein, described M1, M2, M3, Z are positive integer, and the N is even number.

7. method according to claim 6, it is characterised in that

The value of the N is at least one of set { 2,4,8 }；And/or,

The value of described M1, M2, M3 is at least one of set { 1,2,3,4,5,6 }.

8. the method according to claim 6 or 7, it is characterised in that control channel unit is by two or more Resource Unit Group is constituted, wherein,

When the integral multiple that the quantity of the resource unit group is 4, composition one subframe or a PRB in each The quantity of the resource unit group in control channel unit is identical, wherein, the resource in described each control channel unit Unit group is chosen or continuously selection or part continuous part etc. by all resource unit group equal intervals What interval was chosen；And/or,

When the quantity of the resource unit group be 4 it is non-integral multiple when, composition one subframe or a PRB in it is each The quantity of the resource unit group in individual control channel unit is incomplete same.

9. method according to claim 8, it is characterised in that when the non-integer that the quantity of the resource unit group is 4 Times when, the quantity of the resource unit group in one subframe of composition or each control channel unit of PRB is by solid Determine building form or be dynamically composed mode to determine, wherein, the mode that is dynamically composed is included by System information block SIB Or radio resource control RRC is configured, implies determination, root according to the implicit determination of subframe number, according to wireless frame number According to the mode that at least one of detection implicit determination of window numbering is determined.

10. method according to claim 2, it is characterised in that when the Resource Unit included in one group of resource unit group RE and other signals or channel are present when conflict, at least one in the following way the determination RE or described RE Whether affiliated resource unit group can use：

Resource unit group, the affiliated control channels of the RE according to belonging to the pre-defined RE, the RE At least one of unit, the affiliated control channels of the RE are determined with the priority of described other signals or channel；

Letter is controlled according to belonging to signaling the RE of determination, the affiliated resource unit groups of the RE, the RE The available situation of at least one of road unit, the affiliated control channels of the RE is determined, wherein, the signaling Including System information block SIB or radio resource control RRC.

11. methods according to claim 10, it is characterised in that the RE, the affiliated resource unit groups of the RE, The available situation of at least one of the affiliated control channel units of RE, the affiliated control channels of the RE includes following At least one：

Resource unit group where the RE is unavailable；

In resource unit group belonging to the RE only described RE and with the RE match pairing RE it is unavailable；

Only described RE is unavailable in resource unit group belonging to the RE, wherein, the resource list belonging to the RE Other RE in tuple in addition to the RE using single-ended port transmission or with residue RE in other resource unit groups Pairing is used；

Control channel unit belonging to the RE is unavailable；

Control channel belonging to the RE is unavailable.

12. methods according to claim 2, it is characterised in that the resource unit group that a control channel unit is included Quantity be determined according at least one of subframe type, application scenarios, cyclic prefix type, it is including following At least one：

The quantity includes resource unit group quantity more than control channel unit in common subframe；

When one control channel unit with common subframe when identical resource unit group is used, the quantity quilt The bigger polymerization grade of configuration.

13. methods according to claim 12, it is characterised in that the Resource Unit that a control channel unit is included Group quantity according to the application scenarios be determined including：

When the application scenarios are the In-band scenes in Long Term Evolution LTE system frequency band, one control The quantity of the resource unit group that Channel Elements processed are included more than application scenarios be independent service band standalone and/ Or the Resource Unit that control channel unit of application scenarios when being positioned at the protection band guard-band of LTE system is included The quantity of group.

A kind of 14. signal processing apparatus, it is characterised in that including：

Determining module, for determining arrowband control channel resource；

Processing module, for it is determined that the arrowband control channel resource in carry out Resource Unit packet pairing, And the signal to being carried on the Resource Unit of packet pairing is processed.

15. a kind of base stations, it is characterised in that including the signal processing apparatus described in claim 14.

16. a kind of terminals, it is characterised in that including the signal processing apparatus described in claim 14.