CN116436587B - Resource mapping method and device of control channel and resource demapping method and device - Google Patents
Resource mapping method and device of control channel and resource demapping method and device Download PDFInfo
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Abstract
The invention discloses a resource mapping method and a resource demapping method of a control channel. The control channel comprises PCFICH, PHICH and PDCCH, and is characterized in that the resource mapping method comprises the following steps: determining the position of a first resource unit group occupied by PCFICH or PHICH in a control domain symbol range in the transmission process; determining an offset relation of a second resource unit group occupied by the PDCCH in the control domain symbol range relative to the first resource unit group according to the position of the first resource unit group; and determining an offset table representing the resource mapping relation of the PDCCH according to the offset relation. By executing the steps, the resource mapping method can simplify the resource mapping relation, reduce the storage consumption in the resource mapping of the LTE control channel, reduce the logic calculation complexity and the processing time delay, and realize the overall reduction of the power consumption of the module.
Description
Technical Field
The present invention relates to mobile communication technology, and in particular, to a method and an apparatus for mapping resources of a control channel, and a corresponding computer readable storage medium, a method and an apparatus for de-mapping resources of a control channel, and a corresponding apparatus for de-mapping resources.
Background
In a Long-Term Evolution (LTE) mobile communication system, a control channel is transmitted on physical resources in resource element groups (resource element group, REGs) as units. Specifically, the control channel is mapped in symbol groups, and mapped onto one REG, where each symbol group includes 4 symbols, and each REG includes 4 Resource Elements (REs) that can be mapped by the control channel.
The control channels include three types of channels, namely a physical layer control format indicator channel (Physical Control Format Indicator Channel, PCFICH), a physical layer hybrid automatic repeat request indicator channel (Physical Hybrid ARQ Indicator Channel, PHICH), and a physical layer downlink control channel (Physical Downlink Control Channel, PDCCH). In the resource mapping process, mapping is required to be performed according to a sequence of PCFICH, PHICH, PDCCH and a certain mapping rule, mapping resources of a rear mapping channel are required to avoid a front mapping channel, and meanwhile, all channels cannot be mapped on cell reference signal (Cell Reference Signal, CRS) resources, wherein the CRS occupies fixed RE positions in a resource grid according to a certain rule. Therefore, when the PDCCH resource is demapped, the resource positions of the PCFICH, PHICH, and CRS need to be preferentially excluded.
In the prior art, the forward computation logic related to protocol REG mapping is generally adopted, and all the PDCCH REG mapping relations are directly made into a lookup table, which requires a larger cache to store the mapping relations. Moreover, as the interleaving process exists in the PDCCH resource mapping, REG resources occupied by PCFICH and PHICH do not participate in the interleaving process, the occupied REG resources need to be avoided in the generation process of the lookup table, and real-time de-interleaving processing is needed to be carried out on all PDCCH REGs in the generation process of the lookup table, the de-interleaving is the inverse process of the protocol definition interleaving process, and the real-time calculation logic is complex and the processing delay is large. Meanwhile, part of REGs which are not interested in the generation of the mapping lookup table also need to be subjected to de-interleaving and de-mapping processing, and the problems of power consumption waste and delay increase exist.
In order to solve the above-mentioned problems in the prior art, there is a need in the art for a resource mapping technique for a control channel, which can simplify the resource mapping relationship, reduce the memory consumption in the resource mapping of the LTE control channel, reduce the logic computation complexity and the processing delay, and realize the overall reduction of the power consumption of the module.
Disclosure of Invention
The following presents a simplified summary of one or more aspects in order to provide a basic understanding of such aspects. This summary is not an extensive overview of all contemplated aspects, and is intended to neither identify key or critical elements of all aspects nor delineate the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to the more detailed description that is presented later.
In order to overcome the above-mentioned drawbacks of the prior art, the present invention provides a resource mapping method and a resource mapping device for a control channel, and a corresponding computer readable storage medium, and a resource demapping method and a resource demapping device for a control channel, and a corresponding resource demapping device, which can simplify a resource mapping relationship, reduce memory consumption in resource demapping of an LTE control channel, reduce logic computation complexity and processing delay, and realize overall reduction of module power consumption.
Specifically, according to the resource mapping method of the control channel provided in the first aspect of the present invention, the control channel includes PCFICH, PHICH and PDCCH, and the resource mapping method includes the following steps: determining the position of a first resource unit group occupied by PCFICH or PHICH in a control domain symbol range in the transmission process; determining an offset relation of a second resource unit group occupied by the PDCCH in the control domain symbol range relative to the first resource unit group according to the position of the first resource unit group; and determining an offset table representing the resource mapping relation of the PDCCH according to the offset relation.
Optionally, in some embodiments of the present invention, the step of determining a position of the first resource element group occupied by the PCFICH or PHICH in the control domain symbol region during transmission includes: converting real-time preset parameters of user equipment configured by a serving cell into a corresponding resource unit group mode, wherein the corresponding resource unit group mode is used for recording resource unit group information of one resource block in the control domain symbol range, and the resource unit group information comprises the number of the resource unit groups, the frequency domain position and the time domain symbol; numbering each resource unit group in the control domain symbol range in the transmission process, and marking each resource unit group in the initial state as 0; according to the number, judging whether each resource unit group is occupied by PCFICH or PHICH in sequence; and determining the first resource element group to be occupied by the PCFICH or PHICH, marking it as 1, and determining the position of the first resource element group.
Optionally, in some embodiments of the present invention, the offset relation includes an offset value and a virtual address, and the step of determining, according to the position of the first resource element group, an offset relation of a second resource element group occupied by the PDCCH in the control field symbol range with respect to the first resource element group includes: judging whether a plurality of resource unit groups in the control domain symbol range are occupied or not according to the position of the first resource unit group; responsive to at least one of the resource unit groups being occupied, accumulating the offset values of the occupied resource unit groups to obtain the offset value of the second resource unit group; and responsive to at least one of the resource unit groups being unoccupied, accumulating the virtual addresses of the unoccupied resource unit groups to obtain the virtual address of the second resource unit group.
Optionally, in some embodiments of the present invention, in response to at least one of the resource unit groups being occupied, the step of accumulating the offset values of the occupied resource unit group to obtain the offset value of the second resource unit group includes: presetting initial offset values of a plurality of resource unit groups in a control domain symbol range in the transmission process to 0, and judging whether each resource unit group is occupied by PCFICH or PHICH one by one; in response to any one of the resource unit groups being occupied by PCFICH or PHICH, adding 1 to an offset value corresponding to the resource unit group, and judging whether the next resource unit group is occupied by PCFICH or PHICH; and in response to any one of the resource unit groups not occupied by the PCFICH or the PHICH, maintaining the offset value corresponding to the resource unit group, and judging whether the next resource unit group is occupied by the PCFICH or the PHICH.
Optionally, in some embodiments of the present invention, in response to at least one of the resource unit groups being unoccupied, the step of accumulating virtual addresses of the unoccupied resource unit groups to obtain virtual addresses of the second resource unit group includes: presetting initial virtual addresses of a plurality of resource unit groups in a control domain symbol range in the transmission process to 0, and judging whether each resource unit group is occupied by PCFICH or PHICH one by one; adding 1 to a virtual address corresponding to any one of the resource unit groups in response to the resource unit groups not being occupied by the PCFICH or the PHICH, and judging whether the next resource unit group is occupied by the PCFICH or the PHICH; and in response to any one of the resource unit groups being occupied by the PCFICH or the PHICH, maintaining the virtual address corresponding to the resource unit group, and judging whether the next resource unit group is occupied by the PCFICH or the PHICH.
Optionally, in some embodiments of the present invention, the step of determining an offset table representing a resource mapping relationship of the PDCCH according to the offset relationship includes: the virtual address of the second resource unit group is used as the address of the offset table, and the offset value of the second resource unit group is used as the value of the offset table, so as to form the offset table representing the resource mapping relation of the PDCCH.
Further, the resource mapping device of the control channel according to the second aspect of the present invention includes: a memory; and a processor coupled to the memory and configured to implement the above-described resource mapping method for control channels provided in the first aspect of the present invention.
Further, according to a third aspect of the present invention, there is also provided a computer-readable storage medium having stored thereon computer instructions. The computer instructions, when executed by a processor, implement the above-mentioned resource mapping method for a control channel provided in the first aspect of the present invention.
Furthermore, the resource demapping method for a control channel according to the fourth aspect of the present invention includes the steps of: acquiring a resource unit group interested in PDCCH blind detection; interleaving the interested resource unit group to obtain a corresponding virtual number; the virtual number is used as a query address, and an offset value corresponding to the virtual number is queried in an offset table, wherein the offset table is obtained by the resource mapping method of the control channel provided by the first aspect; and determining the actual physical number of the resource unit group interested in the PDCCH blind detection according to the virtual number and the offset value, and demapping the actual physical number.
Further, the resource demapping device for a control channel according to the fifth aspect of the present invention includes: a memory; and a processor coupled to the memory and configured to implement the above-described resource demapping method for a control channel provided in the fourth aspect of the present invention.
Further, according to a sixth aspect of the present invention, there is also provided a computer-readable storage medium having stored thereon computer instructions. The computer instructions, when executed by a processor, implement the above-mentioned resource demapping method for a control channel provided in the fourth aspect of the present invention.
Drawings
The above features and advantages of the present invention will be better understood after reading the detailed description of embodiments of the present disclosure in conjunction with the following drawings. In the drawings, the components are not necessarily to scale and components having similar related features or characteristics may have the same or similar reference numerals.
Fig. 1 illustrates a flow chart of a method of resource mapping of a control channel provided in accordance with some embodiments of the present invention;
FIG. 2 illustrates a flow chart for determining an offset relationship of a second set of resource units relative to a first set of resource units, provided in accordance with some embodiments of the invention;
fig. 3 illustrates a schematic diagram of an offset of a set of resource elements included within a control domain symbol range provided in accordance with some embodiments of the present invention;
fig. 4 is a block diagram illustrating a control channel resource mapping device according to some embodiments of the present invention;
fig. 5 illustrates a flow chart of a method for resource demapping of a control channel provided in accordance with some embodiments of the present invention; and
FIG. 6 illustrates a schematic diagram of logical REG locations of interest for one PDCCH provided according to some embodiments of the present invention;
FIG. 7 illustrates a schematic diagram of a lookup table provided in accordance with some embodiments of the invention;
FIG. 8 is a diagram illustrating a mapping relationship between logical REGs and virtual REGs provided according to some embodiments of the present invention; and
fig. 9 is a block diagram illustrating a control channel resource demapping device according to some embodiments of the present invention.
Reference numerals:
400. resource mapping means of the control channel;
410. 910 a memory;
420. 920 a processor;
610. 620 REG sets;
810. empty REG;
900. resource mapping means of the control channel.
Detailed Description
Further advantages and effects of the present invention will become apparent to those skilled in the art from the disclosure of the present specification, by describing the embodiments of the present invention with specific examples. While the description of the invention will be presented in connection with a preferred embodiment, it is not intended to limit the inventive features to that embodiment. Rather, the purpose of the invention described in connection with the embodiments is to cover other alternatives or modifications, which may be extended by the claims based on the invention. The following description contains many specific details for the purpose of providing a thorough understanding of the present invention. The invention may be practiced without these specific details. Furthermore, some specific details are omitted from the description in order to avoid obscuring the invention.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In addition, the terms "upper", "lower", "left", "right", "top", "bottom", "horizontal", "vertical" as used in the following description should be understood as referring to the orientation depicted in this paragraph and the associated drawings. This relative terminology is for convenience only and is not intended to be limiting of the invention as it is described in terms of the apparatus being manufactured or operated in a particular orientation.
It will be understood that, although the terms "first," "second," "third," etc. may be used herein to describe various elements, regions, layers and/or sections, these elements, regions, layers and/or sections should not be limited by these terms and these terms are merely used to distinguish between different elements, regions, layers and/or sections. Accordingly, a first component, region, layer, and/or section discussed below could be termed a second component, region, layer, and/or section without departing from some embodiments of the present invention.
As described above, in the prior art, the forward computation logic related to the protocol REG mapping is generally used to directly make all the PDCCH REG mapping relationships into a lookup table, which requires a larger buffer to store the mapping relationships. Moreover, as the interleaving process exists in the PDCCH resource mapping, REG resources occupied by PCFICH and PHICH do not participate in the interleaving process, the occupied REG resources need to be avoided in the generation process of the lookup table, and real-time de-interleaving processing is needed to be carried out on all PDCCH REGs in the generation process of the lookup table, the de-interleaving is the inverse process of the protocol definition interleaving process, and the real-time calculation logic is complex and the processing delay is large. Meanwhile, part of REGs which are not interested in the generation of the mapping lookup table also need to be subjected to de-interleaving and de-mapping processing, and the problems of power consumption waste and delay increase exist.
In order to solve the above problems in the prior art, the present invention provides a resource mapping method and a resource mapping device for a control channel, and a corresponding computer readable storage medium, and a resource demapping method and a resource demapping device for a control channel, and a corresponding computer readable storage medium, which can simplify the resource mapping relationship, reduce the memory consumption in the resource demapping of the LTE control channel, reduce the logic computation complexity and the processing delay, and realize the overall reduction of the power consumption of the module.
In some non-limiting embodiments, the method for resource mapping of a control channel according to the first aspect of the present invention may be implemented by the apparatus for resource mapping of a control channel according to the second aspect of the present invention.
Referring to fig. 1, fig. 1 is a flowchart illustrating a resource mapping method of a control channel according to some embodiments of the present invention. As shown in fig. 1, in some embodiments of the present invention, the resource mapping method of the control channel mainly includes the following steps:
s110: the position of a first resource element group occupied by the PCFICH or PHICH in a control domain symbol region during transmission is determined.
Specifically, the control channel is mapped in symbol groups to one REG. In some embodiments of the present invention, a real-time preset parameter of a User Equipment (UE) configured by a serving cell is converted into a corresponding resource element group Pattern (REG Pattern). These corresponding Resource element group patterns are used to record Resource Element Group (REG) information of one Resource Block (RB) within the control domain symbol range. The resource block is composed of 12 consecutive resource units in the frequency domain, and the resource unit group information in the present embodiment includes the number of resource unit groups, the frequency domain position (k), and the time domain symbol (l).
In this embodiment, the above manner of recording REG information with the resource block as granularity can not only reduce the number of bits of the storage unit, but also realize more accurate expression. Compared with the prior art, the REG information is usually recorded according to the time domain symbol, the recording granularity is larger, and the corresponding storage unit bit number (bit number) is increased. Moreover, due to the effect of CRS signals, the prior art needs to insert dummy REGs for CRS symbols to ensure alignment of REGs between different symbols, which undoubtedly increases memory consumption and unnecessary processing logic. In this embodiment, REG Pattern is generated based on 1 RB of the control domain symbol range, so that the dummy REG does not need to be inserted, thereby avoiding REG alignment operation between different symbols, and avoiding the above-mentioned memory consumption and unnecessary processing logic.
In some embodiments, each resource unit group included in the resource grid in the control domain symbol range in the transmission process is numbered according to the resource unit group mode, and each resource unit group in the initial state is marked as 0. In the resource mapping process, mapping is required to be performed according to a certain mapping rule according to the sequence of PCFICH, PHICH, PDCCH, and the mapping resources of the rear mapping channel need to avoid the front mapping channel. Thus, it is possible to sequentially judge whether each resource element group is occupied by PCFICH or PHICH according to the above number, and determine the first resource element group from the resource element group occupied by PCFICH or PHICH, mark it as 1, and determine the position of the first resource element group. For example, the REG occupied by PCFICH, PHICH becomes an occupied-REG (Busy-REG) and the occupied-REG is marked as 1 to indicate that the REG is occupied.
S120: and determining the offset relation of the second resource unit group occupied by the PDCCH in the control domain symbol range relative to the first resource unit group according to the position of the first resource unit group.
In some embodiments, the offset relationship may include primarily an offset value and a virtual address. As shown in fig. 2, fig. 2 illustrates a flow chart for determining an offset relationship of a second resource unit group relative to a first resource unit group, provided in accordance with some embodiments of the invention. Further, the step S120 may mainly include the following steps S121 to S123.
S121: and judging whether a plurality of resource unit groups in the control domain symbol range are occupied according to the position of the first resource unit group.
And judging whether all the resource unit groups in the currently transmitted control domain symbol range are occupied by the PCFICH or the PHICH or not according to the obtained position of the first resource unit group occupied by the PCFICH or the PHICH.
S122: and in response to at least one of the resource unit groups being occupied, accumulating the offset values of the occupied resource unit groups to obtain the offset value of the second resource unit group.
Specifically, in some embodiments, an initial offset value of a plurality of resource element groups in a control domain symbol range during transmission may be preset to 0, and then whether each resource element group is occupied by PCFICH or PHICH may be determined one by one. If the resource unit group is judged to be occupied by the PCFICH or the PHICH, adding 1 to the offset value corresponding to the resource unit group on the basis of the offset value of the previous resource unit group, and if the resource unit group is judged not to be occupied by the PCFICH or the PHICH, the offset value corresponding to the resource unit group is kept to be the same as the offset value of the previous resource unit group.
For example, referring to fig. 3, fig. 3 illustrates an offset diagram of a set of resource elements included within a control field symbol range provided in accordance with some embodiments of the present invention.
In the embodiment shown in fig. 3, a control domain symbol range may include 24 Resource Element Groups (REGs), i.e., actual REG resources, whose numbers are 0-23, respectively. The actual REG resources numbered 0, 8, 15 are occupied by PCFICH, the actual REG resources numbered 1, 6, 12, 18 are occupied by PHICH, the occupied-REG of REG positions corresponding to those REG resources occupied by PCFICH or PHICH are marked as 1, and the occupied-REG of the remaining actual REG resources not occupied by PCFICH or PHICH are marked as 0.
As shown in fig. 3, it is determined that the actual REG resource with the number 0 is occupied by the PCFICH, and the corresponding offset value is added with 1 on the basis of the initial offset value preset value 0, and then is assigned with 1. Further, it is determined whether the next number, i.e. the actual REG resource with the number 1 is occupied by PCFICH or PHICH, after it is determined that the actual REG resource with the number 1 is occupied by PHICH, the offset value corresponding to the actual REG resource with the number 1 is added with 1 on the basis of the offset value 1 corresponding to the previous resource unit group, i.e. the actual REG resource with the number 0, and then is assigned with 2. Then, it is determined whether the actual REG resource with the next number, i.e. the number 2, is occupied by the PCFICH or PHICH, and after determining that the actual REG resource with the number 2 is not occupied by the PCFICH or PHICH, the corresponding offset value maintains the previous resource element group, i.e. the actual REG resource with the number 1, and the corresponding offset value is also 2. And then, according to the judgment principle of the offset values, sequentially determining the offset values corresponding to the actual REG resources with the numbers of 3-23 according to the numbers.
S123: and responsive to at least one resource unit group being unoccupied, accumulating the virtual addresses of the unoccupied resource unit groups to obtain the virtual address of the second resource unit group.
Specifically, in some embodiments, the initial virtual addresses of a plurality of resource element groups in a control domain symbol range during transmission may be preset to 0, and then whether each resource element group is occupied by PCFICH or PHICH may be determined one by one. If the resource unit group is judged not to be occupied by the PCFICH or the PHICH, adding 1 to the virtual address corresponding to the resource unit group on the basis of the virtual address of the previous resource unit group, and if the resource unit group is judged to be occupied by the PCFICH or the PHICH, the virtual address corresponding to the resource unit group keeps the same virtual address as the previous resource unit group.
With continued reference to the embodiment shown in fig. 3, it is determined that the actual REG resource numbered 0 is occupied by the PCFICH, and its corresponding virtual address is the initial virtual address preset value of 0. Judging whether the actual REG resource with the number of 1 is occupied by PCFICH or PHICH, after determining that the actual REG resource with the number of 1 is also occupied by PHICH, the corresponding virtual address keeps the previous resource unit group, namely the actual REG resource with the number of 0, and the corresponding virtual address is also 0. Then, it is determined whether the next number, i.e. the actual REG resource with the number 2 is occupied by PCFICH or PHICH, and after it is determined that the actual REG resource with the number 2 is not occupied by PHICH or PHICH, the offset value corresponding to the next number is added with 1 on the basis of the virtual address 0 corresponding to the previous resource element group, i.e. the actual REG resource with the number 1, and then is assigned with 1. Further, it may be further determined whether the next number, i.e., the actual REG resource with the number 3 is occupied by the PCFICH or the PHICH, and after determining that the actual REG resource with the number 3 is not occupied by the PHICH or the PHICH either, the offset value corresponding to the actual REG resource with the number 3 is added with 1 on the basis of the virtual address 1 corresponding to the previous resource element group, i.e., the actual REG resource with the number 2, and then is assigned with 2. And then, according to the judgment principle of the virtual addresses, sequentially determining the virtual addresses corresponding to the actual REG resources with the numbers of 3-23 according to the numbers.
That is, the number of each of the actual REG resources of the unoccupied-REG (i.e., marked as 0) will get a virtual address and an offset value, and the offset memory is operated. For example, for an actual REG resource numbered 2, a memory value with offset value of 2 is written in a memory address with virtual address of 1 in its offset memory. All subsequent REG resources generate the storage address and the storage value of the offset memory according to the same logic. The generation mode of the offset table for recording the REG offset relation can reduce the storage consumption.
Thus far, the resource mapping method of the control channel provided in the first aspect of the present invention has been described. Referring to fig. 4, fig. 4 is a block diagram illustrating a resource mapping device of a control channel according to some embodiments of the present invention. As shown in fig. 4, the memory 410 and the processor 420 may be configured in the resource mapping device 400 of the control channel. The memory 410 includes, but is not limited to, the above-described computer-readable storage media provided by the third aspect of the invention, having stored thereon computer instructions. The processor 420 is coupled to the memory 410 and is configured to execute computer instructions stored on the memory 410 to implement the resource mapping method for control channels as described above provided in the first aspect of the present invention.
It will be appreciated by those skilled in the art that the above embodiments of the resource mapping method of control channels are merely some non-limiting embodiments provided by the present invention, and are intended to clearly illustrate the main concept of the present invention and to provide some specific solutions for public implementation, not to limit the overall operation or the overall functions of the resource mapping device 400 of the control channel. Similarly, the resource mapping device 400 for control channels is just a non-limiting embodiment provided by the present invention, and does not limit the implementation subject of each step in the resource mapping method for control channels.
Compared with the prior art, the method for mapping resources of the control channel, the device for mapping resources thereof and the corresponding computer-readable storage medium thereof have the advantages that the new REG numbers are obtained by de-interleaving all PDCCH REGs according to the sequence of physical REG numbers, the mapping relation of the REG numbers is stored, the memory bit width of the mapping relation needs to cover all REGs in the symbol range of the control domain, and the mapping relation needs to be obtained by carrying out inverse operation according to the interleaving rule specified by a protocol when the mapping relation is generated.
In addition, in other non-limiting embodiments, another aspect of the present invention further provides a resource demapping method of a control channel, a resource demapping device thereof, and a corresponding computer readable storage medium. The method for resource demapping of a control channel according to the fourth aspect of the present invention may be implemented by the apparatus for resource demapping of a control channel according to the fifth aspect of the present invention.
Specifically, in the LTE system, the User Equipment (UE) needs to perform blind detection on all possible PDCCHs, and the corresponding PDCCHs occupy determined REG resources, and the sum of REG resources of all possible PDCCHs may be less than all REGs in the control symbol range, so that demapping and subsequent demodulation related processing for each REG are not required.
Referring to fig. 5, fig. 5 is a flow chart illustrating a method for resource demapping of a control channel according to some embodiments of the present invention. As shown in fig. 5, in some embodiments of the present invention, the resource demapping method of the control channel mainly includes the following steps:
s510: and acquiring the resource unit group interested in the PDCCH blind detection.
Specifically, in the PDCCH blind detection process, the REG resources currently transmitted are numbered according to the logic sequence after interleaving and cyclic shift, and the resource unit group interested in PDCCH blind detection is obtained. Referring to fig. 6, fig. 6 illustrates a schematic diagram of logical REG locations of interest for one PDCCH provided in accordance with some embodiments of the present invention. As shown in fig. 6, REG set 610 and REG set 620 each represent a logical REG location of interest for PDCCH blind detection.
S520: and interleaving the interested resource unit groups to obtain the corresponding virtual numbers.
In some embodiments of the present invention, the logic REG numbers that are interested in the current blind detection may be interleaved and cyclically shifted according to the interleaving rule defined by the protocol, so as to obtain the interleaved virtual REG numbers. Specifically, in some preferred embodiments, the generated interleaved position may be calculated based on the logical REG number according to the following formula, and then the offset value obtained by the search is subtracted, and the corresponding virtual REG number may be obtained after cyclic shift.
In particular, in the embodiment provided in FIG. 6, which may be described with reference to the third generation partnership project (3rd Generation Partnership Project,3GPP) protocol, insertion is requiredThe number of NULL REGs (i.e., NULL REGs) is such that the total REG number is a multiple of 32, calculated as follows:
，
wherein, the liquid crystal display device comprises a liquid crystal display device,indicating the number of REGs that the PDCCH can use.
Then, renumbering all REGs, column permutation is performed according to the interleaver column permutation pattern described by the protocol, and reading is performed according to columns (skipping the positions of the null REGs), so that the sequence numbers of the virtual REGs can be obtained.
Specifically, in some embodiments of the present invention, for each logical REG of interest, its virtual REG number may be obtained by simple logic calculation, with the following specific scheme:
the column number (col) and the line number (line) of the current logic REG after column permutation are calculated as follows:
，
wherein, the liquid crystal display device comprises a liquid crystal display device,the pre-expression of the column replacement pattern may be specifically the following expression:
in the embodiment of the present invention, a Look-up Table (LUT) of virtual REG number offset needs to be acquired in advance. The lookup table can be consistent for all REG processing of the current transmission, can be generated in advance, and does not occupy the processing time delay of the system. Further, reference may be made to fig. 7, which is a schematic diagram of a lookup table provided in accordance with some embodiments of the invention. As shown in fig. 7, "column index" is an address of the lookup table, "before column replacement" (before permutation) is a column number pattern before column replacement is performed, "after column replacement" (after permutation) is a column number pattern after column replacement is performed, and "NULL count" is a value of the lookup table. And (3) polling the column numbers aiming at the pattern after column replacement, adding one to the value of the null value count of the column where the null REG is located, and keeping the value of the null value count of the column where the non-null REG is located unchanged, so as to finally obtain the finished lookup table.
From the lookup table shown in FIG. 7 and the column number (col) and the line number (line) after column permutation, the virtual REG number corresponding to the current logical REG number can be calculatedAfter cyclic shift, the final virtual REG number is obtainedThe following is shown:
，
wherein, the liquid crystal display device comprises a liquid crystal display device,representing the physical label of the current serving cell.
Referring to fig. 8, fig. 8 is a schematic diagram illustrating mapping relationships between logical REGs and virtual REGs according to some embodiments of the present invention. As shown in the list (a) of FIG. 8, the logical REG numbers are inserted before column permutationA number of empty REGs 810, wherein dark blocks 610 correspond to resource element groups of interest for PDCCH blind detection shown in fig. 6, REG sets 610, light blocks 620 correspond to resource element groups of interest for PDCCH blind detection shown in fig. 6, REG sets 620, and empty REGs 810 need to participate in column permutation. The list (b) in fig. 8 is a column-permuted logical REG number, and each REG number is unchanged after column permutation. As shown in the list (c) of fig. 8, the interleaver reads out (skips over the positions of the null REGs 810) by columns, and thus the order numbers of the dummy REGs can be obtained. It can be seen that the virtual REG numbers in the (c) list correspond one-to-one to the logical REG numbers in the (b) list.
As shown in fig. 8, in the description according to the protocol, the number of the virtual REG after the actual interleaving process is completed can be obtained for each interested logical REG in the above manner, that is, the final mapping relationship between the logical REG and the virtual REG is obtained. Compared with the prior art, the logic REG which is not interested is synchronously processed in the generation process of the mapping relation table, which clearly increases the processing delay of the generation of the storage table and unnecessary calculation power consumption.
S530: and inquiring the offset value corresponding to the virtual number in the offset table by taking the virtual number as an inquiry address.
In some embodiments, the virtual number is used as a query address, and the query is performed in an offset table obtained by the resource mapping method of the control channel provided in the first aspect of the present invention, so that an offset value corresponding to the virtual number can be obtained.
S540: and determining the actual physical number of the resource unit group interested in the PDCCH blind detection according to the virtual number and the offset value, and demapping the actual physical number.
In some embodiments, the actual physical REG number is obtained by adding the offset value obtained by the query in the offset table to the virtual REG number. In the embodiment of the present invention, based on the resource element group Pattern (REG Pattern) corresponding to the real-time preset parameter of the previous ue, the frequency domain position (k) and the time domain symbol (l) in the resource grid within the control domain symbol range corresponding to the physical REG number can be obtained, and in contrast, in the prior art, the subtraction process of the dummy REG needs to be considered.
Thus, the resource demapping method of the control channel provided in the fourth aspect of the present invention has been described. Referring to fig. 9, fig. 9 is a block diagram illustrating a resource demapping device for a control channel according to some embodiments of the present invention. As shown in fig. 9, a memory 910 and a processor 920 may be configured in the resource mapping device 900 of the control channel. The memory 910 includes, but is not limited to, the above-described computer-readable storage media provided by the fifth aspect of the present invention, on which computer instructions are stored. The processor 920 is coupled to the memory 910 and configured to execute computer instructions stored on the memory 910 to implement the above-described resource demapping method for control channels provided in the fourth aspect of the present invention.
It will be appreciated by those skilled in the art that the above embodiments of the resource demapping method for control channels are merely some non-limiting embodiments provided by the present invention, and are intended to clearly illustrate the main concept of the present invention and to provide some specific solutions for public implementation, not to limit the overall operation or the overall functions of the resource demapping device 900 for control channels. Similarly, the resource demapping device 900 for control channels is just a non-limiting embodiment provided in the present invention, and does not limit the implementation subject of each step in the resource demapping method for control channels.
In another aspect, the invention provides a resource demapping method of a control channel, a resource demapping device thereof, and a corresponding computer readable storage medium thereof, which reduce the consumption of a memory by designing REG patterns and generating an offset table for recording offset relationships of PDCCH REGs, and simultaneously, perform interleaving processing on REGs interested in PDCCH blind detection and operation for calculating actual physical REGs based on the lookup offset table, reduce unnecessary demapping operation of logic REGs, realize reduction of power consumption and delay, and perform forward interleaving processing on the logic REGs, thereby avoiding the interleaving operation of REGs, and further reducing the logic computation complexity and processing delay of demapping.
In summary, the resource mapping method and the resource mapping device for the control channel, and the corresponding computer readable storage medium, the resource demapping method and the resource demapping device for the control channel, and the corresponding resource demapping device for the control channel provided by the invention can simplify the resource mapping relationship, reduce the memory consumption in the resource demapping of the LTE control channel, reduce the logic computation complexity and the processing time delay, and realize the overall reduction of the power consumption of the module.
While, for purposes of simplicity of explanation, the methodologies are shown and described as a series of acts, it is to be understood and appreciated that the methodologies are not limited by the order of acts, as some acts may, in accordance with one or more embodiments, occur in different orders and/or concurrently with other acts from that shown and described herein or not shown and described herein, as would be understood and appreciated by those skilled in the art.
The previous description of the disclosure is provided to enable any person skilled in the art to make or use the disclosure. Various modifications to the disclosure will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other variations without departing from the spirit or scope of the disclosure. Thus, the disclosure is not intended to be limited to the examples and designs described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A resource mapping method of a control channel, the control channel including PCFICH, PHICH, and PDCCH, the resource mapping method comprising the steps of:
determining the position of a first resource unit group occupied by PCFICH or PHICH in a control domain symbol range in the transmission process;
determining an offset relation of a second resource unit group occupied by the PDCCH in the control domain symbol range relative to the first resource unit group according to the position of the first resource unit group, wherein the offset relation comprises an offset value and a virtual address; and
and taking the virtual address of the second resource unit group as an address of an offset table, and taking the offset value of the second resource unit group as a value of the offset table to form the offset table representing the resource mapping relation of the PDCCH.
2. The resource mapping method of claim 1, wherein the determining the position of the first resource element group occupied by the PCFICH or PHICH in the control domain symbol region in the transmission process comprises:
converting real-time preset parameters of user equipment configured by a serving cell into a corresponding resource unit group mode, wherein the corresponding resource unit group mode is used for recording resource unit group information of one resource block in the control domain symbol range, and the resource unit group information comprises the number of the resource unit groups, frequency domain positions and time domain symbols;
numbering each resource unit group in the control domain symbol range in the transmission process, and marking each resource unit group in an initial state as 0;
according to the number, judging whether each resource unit group is occupied by PCFICH or PHICH in sequence; and
the resource element group occupied by PCFICH or PHICH is determined, the first resource element group is marked as 1, and the position of the first resource element group is determined.
3. The resource mapping method of claim 1, wherein the step of determining an offset relationship of a second resource element group occupied by the PDCCH with respect to the first resource element group in the control domain symbol range according to the position of the first resource element group comprises:
judging whether a plurality of resource unit groups in the control domain symbol range are occupied or not according to the position of the first resource unit group;
responsive to at least one of the resource unit groups being occupied, accumulating the offset values of the occupied resource unit groups to obtain the offset value of the second resource unit group; and
and in response to at least one of the resource unit groups being unoccupied, accumulating the virtual addresses of the unoccupied resource unit groups to obtain the virtual address of the second resource unit group.
4. The resource mapping method of claim 3 wherein the step of accumulating the offset values of the occupied resource unit groups to obtain the offset value of the second resource unit group in response to at least one of the resource unit groups being occupied comprises:
presetting initial offset values of a plurality of resource unit groups in a control domain symbol range in the transmission process to 0, and judging whether each resource unit group is occupied by PCFICH or PHICH one by one;
in response to any one of the resource unit groups being occupied by PCFICH or PHICH, adding 1 to an offset value corresponding to the resource unit group, and judging whether the next resource unit group is occupied by PCFICH or PHICH; and
and in response to any one of the resource unit groups not occupied by the PCFICH or the PHICH, maintaining the offset value corresponding to the resource unit group, and judging whether the next resource unit group is occupied by the PCFICH or the PHICH.
5. The resource mapping method of claim 3 wherein said step of accumulating virtual addresses of unoccupied resource unit groups in response to at least one of said resource unit groups being unoccupied to obtain virtual addresses of said second resource unit group comprises:
presetting initial virtual addresses of a plurality of resource unit groups in a control domain symbol range in the transmission process to 0, and judging whether each resource unit group is occupied by PCFICH or PHICH one by one;
adding 1 to a virtual address corresponding to the resource unit group in response to any resource unit group not occupied by PCFICH or PHICH, and judging whether the next resource unit group is occupied by PCFICH or PHICH; and
and in response to the occupation of any resource unit group by the PCFICH or the PHICH, maintaining the virtual address corresponding to the resource unit group, and judging whether the next resource unit group is occupied by the PCFICH or the PHICH.
6. A resource mapping apparatus for a control channel, comprising:
a memory; and
a processor, the processor being connected to the memory and configured to implement the resource mapping method of the control channel according to any one of claims 1-5.
7. A computer readable storage medium having stored thereon computer instructions which, when executed by a processor, implement the resource mapping method of a control channel according to any of claims 1-5.
8. A method for resource demapping of a control channel, comprising the steps of:
acquiring a resource unit group interested in PDCCH blind detection;
interleaving the interested resource unit group to obtain a corresponding virtual number;
inquiring an offset value corresponding to the virtual number in an offset table by taking the virtual number as an inquiry address, wherein the offset table is obtained by the resource mapping method of the control channel according to any one of claims 1-5; and
and determining the actual physical number of the resource unit group interested in the PDCCH blind detection according to the virtual number and the offset value, and demapping the actual physical number.
9. A resource demapping apparatus for a control channel, comprising:
a memory; and
a processor coupled to the memory and configured to implement the resource demapping method of the control channel of claim 8.
10. A computer readable storage medium having stored thereon computer instructions which, when executed by a processor, implement the method of resource demapping of a control channel of claim 8.
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Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101409702A (en) * | 2007-10-08 | 2009-04-15 | 中兴通讯股份有限公司 | Method for selecting wireless resource block offset by sender |
| CN102263604A (en) * | 2010-05-25 | 2011-11-30 | 中兴通讯股份有限公司 | LTE (long term evolution) PDCCH (physical downlink control channel) demapping method and device |
| CN102547001A (en) * | 2010-12-07 | 2012-07-04 | 中国电信股份有限公司 | Control signal remote transmission method and system |
| CN108039941A (en) * | 2017-12-13 | 2018-05-15 | 重庆邮电大学 | The method of LTE-A control channel solution resource impacts |
| CN109565370A (en) * | 2016-06-15 | 2019-04-02 | 康维达无线有限责任公司 | The upload control signaling of new radio |
| CN109660315A (en) * | 2017-10-10 | 2019-04-19 | 北京展讯高科通信技术有限公司 | PDCCH blind detection method and device, storage medium, user equipment based on DMRS |
| CN110034903A (en) * | 2018-01-12 | 2019-07-19 | 电信科学技术研究院有限公司 | Resource indicating method, resource determining method, device, base station and terminal |
| CN112073153A (en) * | 2020-09-15 | 2020-12-11 | 展讯通信（上海）有限公司 | Virtual inspection judging method and device, storage medium and terminal |
| CN112567837A (en) * | 2018-08-09 | 2021-03-26 | 康维达无线有限责任公司 | Resource management for 5G eV2X |
| WO2021232863A1 (en) * | 2020-05-18 | 2021-11-25 | 大唐移动通信设备有限公司 | Method and apparatus for configuring and determining pucch resource |
| CN113840327A (en) * | 2021-10-09 | 2021-12-24 | 杰创智能科技股份有限公司 | LTE control channel resource mapping method and device |
| WO2022057524A1 (en) * | 2020-09-21 | 2022-03-24 | 华为技术有限公司 | Resource determination method and apparatus |
| CN114258136A (en) * | 2020-09-21 | 2022-03-29 | 华为技术有限公司 | Resource determination method and device |
| CN115509959A (en) * | 2022-08-30 | 2022-12-23 | Oppo广东移动通信有限公司 | Processing system, control method, chip, and computer-readable storage medium |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115529116A (en) * | 2017-12-29 | 2022-12-27 | 华为技术有限公司 | Communication method, device and system |
-
2023
- 2023-06-14 CN CN202310699899.XA patent/CN116436587B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101409702A (en) * | 2007-10-08 | 2009-04-15 | 中兴通讯股份有限公司 | Method for selecting wireless resource block offset by sender |
| CN102263604A (en) * | 2010-05-25 | 2011-11-30 | 中兴通讯股份有限公司 | LTE (long term evolution) PDCCH (physical downlink control channel) demapping method and device |
| CN102547001A (en) * | 2010-12-07 | 2012-07-04 | 中国电信股份有限公司 | Control signal remote transmission method and system |
| CN109565370A (en) * | 2016-06-15 | 2019-04-02 | 康维达无线有限责任公司 | The upload control signaling of new radio |
| CN109660315A (en) * | 2017-10-10 | 2019-04-19 | 北京展讯高科通信技术有限公司 | PDCCH blind detection method and device, storage medium, user equipment based on DMRS |
| CN108039941A (en) * | 2017-12-13 | 2018-05-15 | 重庆邮电大学 | The method of LTE-A control channel solution resource impacts |
| CN110034903A (en) * | 2018-01-12 | 2019-07-19 | 电信科学技术研究院有限公司 | Resource indicating method, resource determining method, device, base station and terminal |
| CN112567837A (en) * | 2018-08-09 | 2021-03-26 | 康维达无线有限责任公司 | Resource management for 5G eV2X |
| WO2021232863A1 (en) * | 2020-05-18 | 2021-11-25 | 大唐移动通信设备有限公司 | Method and apparatus for configuring and determining pucch resource |
| CN112073153A (en) * | 2020-09-15 | 2020-12-11 | 展讯通信（上海）有限公司 | Virtual inspection judging method and device, storage medium and terminal |
| WO2022057524A1 (en) * | 2020-09-21 | 2022-03-24 | 华为技术有限公司 | Resource determination method and apparatus |
| CN114258136A (en) * | 2020-09-21 | 2022-03-29 | 华为技术有限公司 | Resource determination method and device |
| CN113840327A (en) * | 2021-10-09 | 2021-12-24 | 杰创智能科技股份有限公司 | LTE control channel resource mapping method and device |
| CN115509959A (en) * | 2022-08-30 | 2022-12-23 | Oppo广东移动通信有限公司 | Processing system, control method, chip, and computer-readable storage medium |
Non-Patent Citations (1)
| Title |
|---|
| Ericsson.R1-1709062 "Overview of DL Control Channel Design".3GPP tsg_ran\WG1_RL1.2017,(第TSGR1_89期),全文. * |
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