CN108112085A - The selection method and device of a kind of channel resource - Google Patents
The selection method and device of a kind of channel resource Download PDFInfo
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- H04W72/541—Allocation or scheduling criteria for wireless resources based on quality criteria using the level of interference
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- H—ELECTRICITY
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Abstract
The present invention proposes a kind of selection method of channel resource, including：The occupied physical uplink control channel resource of cell of setting is calculated；Judge whether the occupied physical uplink control channel resource of the cell meets between the occupied physical uplink control channel resource in the neighbor cell of the cell, mutually orthogonal requirement；It if being unsatisfactory for requiring, repeats to adjust the search space of the cell and recalculates the occupied physical uplink control channel resource of the cell, until the occupied physical uplink control channel resource of the cell is met the requirements.Using above-mentioned technical proposal, it can ensure mutually orthogonal between the Physical Uplink Control Channel of setting cell selection and the Physical Uplink Control Channel of the cell neighbor cell, it prevents from generating interference between the Physical Uplink Control Channel of the cell and the Physical Uplink Control Channel of the neighbor cell of the cell, improves the efficiency of transmission of Physical Uplink Control Channel.
Description
Technical Field
The present invention relates to the field of mobile communications technologies, and in particular, to a method and an apparatus for selecting channel resources.
Background
In a Long Term Evolution (LTE) mobile communication system, an important factor limiting system performance is mutual interference between adjacent cells of a base station, especially a mobile terminal at a cell edge is likely to be interfered by a mobile terminal of an adjacent cell, which may cause unstable communication. The Inter-cell interference Coordination (ICIC) technology is applied to configure cells, so that interference generated by traffic channels between adjacent cells can be prevented. However, the ICIC technique cannot prevent the control channel between adjacent cells from generating interference when the cells are configured.
In an LTE mobile communication system, a mobile terminal needs to send ACK/NACK information to a base station through a Physical Uplink Control Channel (PUCCH), and if interference occurs between the PUCCH of adjacent cells, demodulation performance of the PUCCH is affected, and transmission efficiency of the PUCCH is reduced. Because no effective precaution measure is taken against the interference of the control channel when the existing LTE system configures the cell, the interference is easily generated between the physical uplink control channels PUCCH of the adjacent cells of the existing LTE system, the demodulation performance is poor, and the transmission efficiency is low.
Disclosure of Invention
Based on the defects and shortcomings of the prior art, the invention provides a method and a device for selecting channel resources.
A method for selecting channel resources, comprising:
calculating to obtain the physical uplink control channel resources occupied by the set cell;
judging whether the physical uplink control channel resources occupied by the cell meet the set orthogonal requirement or not; wherein, the set orthogonal requirement is a requirement for ensuring that the physical uplink control channel resources occupied by the cell and the physical uplink control channel resources occupied by the adjacent cells of the cell are all orthogonal to each other;
if the physical uplink control channel resources occupied by the cell do not meet the set orthogonal requirement, the search space of the cell is repeatedly adjusted and the physical uplink control channel resources occupied by the cell are recalculated until the physical uplink control channel resources occupied by the cell meet the set orthogonal requirement.
Preferably, the calculating to obtain the physical uplink control channel resource occupied by the set cell includes:
calculating to obtain the physical downlink control channel resources occupied by the set cell in the set search space;
and calculating to obtain the physical uplink control channel resources occupied by the cell according to the physical downlink control channel resources occupied by the cell.
Preferably, the adjusting the search space of the cell includes:
adjusting the aggregation level of the physical downlink control channel of the cell, or changing the candidate physical downlink control channel set of the cell.
Preferably, the determining whether the physical uplink control channel resource occupied by the cell meets the set orthogonal requirement includes:
judging whether the physical uplink control channel resources occupied by the cell meet the set frequency domain orthogonal requirement or not, or judging whether the physical uplink control channel resources occupied by the cell meet the set code domain orthogonal requirement or not;
and if the physical uplink control channel resources occupied by the cell meet the set frequency domain orthogonal requirement, or the physical uplink control channel resources occupied by the cell meet the set code domain orthogonal requirement, judging that the physical uplink control channel resources occupied by the cell meet the set orthogonal requirement.
Preferably, the determining whether the physical uplink control channel resource occupied by the cell meets the set frequency domain orthogonal requirement includes:
judging whether the frequency domain resources occupied by the physical uplink control channel of the cell are different from the frequency domain resources occupied by the physical uplink control channel of the adjacent cell of the cell;
and if the frequency domain resources occupied by the physical uplink control channel of the cell are different from the frequency domain resources occupied by the physical uplink control channel of the adjacent cell of the cell, confirming that the physical uplink control channel resources occupied by the cell meet the set frequency domain orthogonal requirement.
Preferably, the determining whether the physical uplink control channel resource occupied by the cell meets the set code domain orthogonality requirement includes:
judging whether the orthogonal sequence of the uplink subframe corresponding to the physical uplink control channel resource occupied by the cell is different from the orthogonal sequence of the uplink subframe corresponding to the physical uplink control channel resource occupied by the adjacent cell of the cell;
and if the orthogonal sequence of the uplink subframe corresponding to the physical uplink control channel resource occupied by the cell is different from the orthogonal sequence of the uplink subframe corresponding to the physical uplink control channel resource occupied by the adjacent cell of the cell, confirming that the physical uplink control channel resource occupied by the cell meets the code domain orthogonal requirement.
An apparatus for selecting channel resources, comprising:
the calculating unit is used for calculating and obtaining the physical uplink control channel resources occupied by the set cell;
a judging unit, configured to judge whether a physical uplink control channel resource occupied by the cell meets a set orthogonal requirement; wherein, the set orthogonal requirement is a requirement for ensuring that the physical uplink control channel resources occupied by the cell and the physical uplink control channel resources occupied by the adjacent cells of the cell are all orthogonal to each other;
a processing unit, configured to repeatedly execute the following operations when the determining unit determines that the physical uplink control channel resource occupied by the cell does not meet the set orthogonal requirement:
and adjusting the search space of the cell, and calling the calculation unit to recalculate the physical uplink control channel resources occupied by the cell until the judgment unit judges that the physical uplink control channel resources occupied by the cell meet the set orthogonal requirement.
Preferably, the calculation unit includes:
the first calculating unit is used for calculating to obtain the physical downlink control channel resources occupied by the set cell in the set search space;
and the second calculation unit is used for calculating and obtaining the physical uplink control channel resources occupied by the cell according to the physical downlink control channel resources occupied by the cell.
Preferably, when the processing unit adjusts the search space of the cell, it is specifically configured to:
adjusting the aggregation level of the physical downlink control channel of the cell, or changing the candidate physical downlink control channel set of the cell.
Preferably, when the determining unit determines whether the physical uplink control channel resource occupied by the cell meets the set orthogonal requirement, the determining unit is specifically configured to:
judging whether the physical uplink control channel resources occupied by the cell meet the set frequency domain orthogonal requirement or not, or judging whether the physical uplink control channel resources occupied by the cell meet the set code domain orthogonal requirement or not; and if the physical uplink control channel resources occupied by the cell meet the set frequency domain orthogonal requirement, or the physical uplink control channel resources occupied by the cell meet the set code domain orthogonal requirement, judging that the physical uplink control channel resources occupied by the cell meet the set orthogonal requirement.
Preferably, when the determining unit determines whether the physical uplink control channel resource occupied by the cell meets the set frequency domain orthogonal requirement, the determining unit is specifically configured to:
judging whether the frequency domain resources occupied by the physical uplink control channel of the cell are different from the frequency domain resources occupied by the physical uplink control channel of the adjacent cell of the cell; and if the frequency domain resources occupied by the physical uplink control channel of the cell are different from the frequency domain resources occupied by the physical uplink control channel of the adjacent cell of the cell, confirming that the physical uplink control channel resources occupied by the cell meet the set frequency domain orthogonal requirement.
Preferably, when the determining unit determines whether the physical uplink control channel resource occupied by the cell meets the set code domain orthogonality requirement, the determining unit is specifically configured to:
judging whether the orthogonal sequence of the uplink subframe corresponding to the physical uplink control channel resource occupied by the cell is different from the orthogonal sequence of the uplink subframe corresponding to the physical uplink control channel resource occupied by the adjacent cell of the cell; and if the orthogonal sequence of the uplink subframe corresponding to the physical uplink control channel resource occupied by the cell is different from the orthogonal sequence of the uplink subframe corresponding to the physical uplink control channel resource occupied by the adjacent cell of the cell, confirming that the physical uplink control channel resource occupied by the cell meets the code domain orthogonal requirement.
An apparatus for selecting channel resources, comprising:
a memory and a processor;
wherein the memory is connected with the processor and used for storing programs;
the processor is used for realizing the following functions by running the program stored in the memory:
calculating to obtain the physical uplink control channel resources occupied by the set cell; judging whether the physical uplink control channel resources occupied by the cell meet the set orthogonal requirement or not; wherein, the set orthogonal requirement is a requirement for ensuring that the physical uplink control channel resources occupied by the cell and the physical uplink control channel resources occupied by the adjacent cells of the cell are all orthogonal to each other; if the physical uplink control channel resources occupied by the cell do not meet the set orthogonal requirement, the search space of the cell is repeatedly adjusted and the physical uplink control channel resources occupied by the cell are recalculated until the physical uplink control channel resources occupied by the cell meet the set orthogonal requirement.
Preferably, when the processor calculates and obtains the physical uplink control channel resource occupied by the set cell, the processor is specifically configured to:
calculating to obtain the physical downlink control channel resources occupied by the set cell in the set search space; and calculating to obtain the physical uplink control channel resources occupied by the cell according to the physical downlink control channel resources occupied by the cell.
Preferably, when the processor adjusts the search space of the cell, the processor is specifically configured to:
adjusting the aggregation level of the physical downlink control channel of the cell, or changing the candidate physical downlink control channel set of the cell.
Preferably, when the processor determines whether the physical uplink control channel resource occupied by the cell meets the set orthogonal requirement, the processor is specifically configured to:
judging whether the physical uplink control channel resources occupied by the cell meet the set frequency domain orthogonal requirement or not, or judging whether the physical uplink control channel resources occupied by the cell meet the set code domain orthogonal requirement or not; and if the physical uplink control channel resources occupied by the cell meet the set frequency domain orthogonal requirement, or the physical uplink control channel resources occupied by the cell meet the set code domain orthogonal requirement, judging that the physical uplink control channel resources occupied by the cell meet the set orthogonal requirement.
Preferably, when the processor determines whether the physical uplink control channel resource occupied by the cell meets the set frequency domain orthogonal requirement, the processor is specifically configured to:
judging whether the frequency domain resources occupied by the physical uplink control channel of the cell are different from the frequency domain resources occupied by the physical uplink control channel of the adjacent cell of the cell; and if the frequency domain resources occupied by the physical uplink control channel of the cell are different from the frequency domain resources occupied by the physical uplink control channel of the adjacent cell of the cell, confirming that the physical uplink control channel resources occupied by the cell meet the set frequency domain orthogonal requirement.
Preferably, when the processor determines whether the physical uplink control channel resource occupied by the cell meets the set code domain orthogonality requirement, the processor is specifically configured to:
judging whether the orthogonal sequence of the uplink subframe corresponding to the physical uplink control channel resource occupied by the cell is different from the orthogonal sequence of the uplink subframe corresponding to the physical uplink control channel resource occupied by the adjacent cell of the cell; and if the orthogonal sequence of the uplink subframe corresponding to the physical uplink control channel resource occupied by the cell is different from the orthogonal sequence of the uplink subframe corresponding to the physical uplink control channel resource occupied by the adjacent cell of the cell, confirming that the physical uplink control channel resource occupied by the cell meets the code domain orthogonal requirement.
When the method for selecting the channel resources is applied to select the physical uplink control channel resources for the set cell, the physical uplink control channel resources occupied by the set cell are obtained by calculation; then judging whether the physical uplink control channel resources occupied by the cell meet the set orthogonal requirement; wherein, the set orthogonal requirement is a requirement for ensuring that the physical uplink control channel resources occupied by the cell and the physical uplink control channel resources occupied by the adjacent cells of the cell are all orthogonal to each other; if the physical uplink control channel resources occupied by the cell do not meet the set orthogonal requirement, the search space of the cell is repeatedly adjusted and the physical uplink control channel resources occupied by the cell are recalculated until the physical uplink control channel resources occupied by the cell meet the set orthogonal requirement. By adopting the technical scheme, the physical uplink control channel selected for the set cell and the physical uplink control channel of the cell adjacent to the cell can be ensured to be orthogonal to each other, the interference between the physical uplink control channel of the cell and the physical uplink control channel of the cell adjacent to the cell is prevented, and the transmission efficiency of the physical uplink control channel is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a flowchart illustrating a method for selecting channel resources according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating another method for selecting channel resources according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an apparatus for selecting channel resources according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of another apparatus for selecting channel resources according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of another apparatus for selecting channel resources according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the invention discloses a method for selecting channel resources, which is shown in figure 1 and comprises the following steps:
s101, calculating to obtain physical uplink control channel resources occupied by a set cell;
specifically, according to the protocol, for the PUCCH transmitting ACK/NACK, the user equipment utilizes the physical uplink control channel resourceAnd determining the used frequency domain resources and code domain resources so as to obtain higher transmission efficiency and multiplexing capacity.
For FDD, in subframe n for HARQ-ACK transmissionIs indicated by a Physical Downlink Control Channel (PDCCH) of subframe n-4, that is:
wherein n isCCEIs the corresponding Downlink Control information (Downlink Control)Information, DCI) number of a first Control Channel Element (CCE) of a transmission;configured by an upper layer;
similarly for TDD, as long as there is PDCCH transmission within the feedback window, the corresponding is
Or
Wherein N isP≤nCCE,i＜Np+1，
In summary,is implicitly notified by the first CCE number used by the most recent PDCCH. Therefore, in the process of this step, the PDCCH of the cell is calculated and obtained according to the search space of the set cell, and the physical uplink control channel resource occupied by the cell can be further calculated and obtained through the calculated PDCCH.
It should be noted that, the embodiment of the present invention may set the physical uplink control channel resources occupied by all the user equipments in the set cell, or may set only the physical uplink control channel resources occupied by the edge user equipment in the set cell. When the number of the limited user equipments is different, only the space range to which the technical solution of the embodiment of the present invention is applied is different, and the calculation method is the same as the method related to the embodiment of the present invention.
S102, judging whether the physical uplink control channel resources occupied by the cell meet the set orthogonal requirement; wherein, the set orthogonal requirement is a requirement for ensuring that the physical uplink control channel resources occupied by the cell and the physical uplink control channel resources occupied by the adjacent cells of the cell are all orthogonal to each other;
specifically, after the physical uplink control channel resources occupied by the set cell are obtained through calculation, whether the physical uplink control channel resources occupied by the cell and the physical uplink control channel resources occupied by the adjacent cell of the cell are orthogonal to each other is further judged. When the physical uplink control channel resources occupied by the cell and the physical uplink control channel resources occupied by the adjacent cells of the cell are orthogonal to each other, interference between the physical uplink control channels of the adjacent cells cannot be generated, and the transmission efficiency of the physical uplink control channels of the adjacent cells is guaranteed.
It should be noted that the set orthogonality requirement may be a frequency domain orthogonality requirement, or a code domain orthogonality requirement, that is, the physical uplink control channel resource occupied by the cell and the physical uplink control channel resource occupied by the cell adjacent to the cell satisfy the frequency domain orthogonality or the code domain orthogonality. The set orthogonality requirement is an orthogonality requirement that is set in advance to ensure mutual orthogonality between PUCCHs of adjacent cells according to an actual application scenario before selecting a physical uplink control channel resource for a cell, and specifically may be a fixed orthogonality requirement set inside a base station, or may be an orthogonality requirement that is temporarily set according to an application scenario.
If the physical uplink control channel resource occupied by the cell does not meet the set orthogonal requirement, repeatedly executing the following steps:
s103, adjusting the search space of the cell, returning to the step S101 to recalculate the physical uplink control channel resource occupied by the cell until the physical uplink control channel resource occupied by the cell is judged to meet the set orthogonal requirement through the step S102.
Specifically, if the determination result is obtained by the calculation, the physical uplink control channel resource currently occupied by the set cell does not satisfy the orthogonality requirement, that is, the physical uplink control channel resource occupied by the cell and the physical uplink control channel resource occupied by the neighboring cell of the cell are not mutually orthogonal. Then, the physical uplink control channel resources are repeatedly reselected for the set cell until the physical uplink control channel resources occupied by the cell and the physical uplink control channel resources occupied by the adjacent cell of the cell are orthogonal to each other.
And if the physical uplink control channel resource currently occupied by the cell is judged and confirmed to meet the orthogonal requirement, directly distributing the physical uplink control channel resource currently occupied by the cell to the cell without setting the physical uplink control channel resource occupied by the cell.
It should be noted that, when it is determined through step S102 that the physical uplink control channel resource occupied by the cell does not meet the set orthogonality requirement, on one hand, the search space of the cell may not be adjusted first, and the physical uplink control channel resource occupied by the cell may be calculated again, but the physical uplink control channel resource of the cell RNTI may be abandoned for scheduling, and other RNTIs of the cell may be selected for scheduling, and the specific scheduling method is the same as the processing method provided in the embodiment of the present invention. On the other hand, after the search space of the cell is adjusted for multiple times or all the search spaces of the cell are traversed, if the physical uplink control channel resource occupied by the cell still cannot meet the set orthogonal requirement, the physical uplink control channel resource is abandoned to be scheduled for the cell RNTI, and other RNTIs of the cell are selected for scheduling attempt.
When the method for selecting the channel resources provided by the embodiment of the invention is applied, when the physical uplink control channel resources are selected for the set cell, the physical uplink control channel resources occupied by the set cell are obtained by calculation; then judging whether the physical uplink control channel resources occupied by the cell meet the set orthogonal requirement; wherein, the set orthogonal requirement is a requirement for ensuring that the physical uplink control channel resources occupied by the cell and the physical uplink control channel resources occupied by the adjacent cells of the cell are all orthogonal to each other; if the physical uplink control channel resources occupied by the cell do not meet the set orthogonal requirement, the search space of the cell is repeatedly adjusted and the physical uplink control channel resources occupied by the cell are recalculated until the physical uplink control channel resources occupied by the cell meet the set orthogonal requirement. By adopting the technical scheme, the physical uplink control channel selected for the set cell and the physical uplink control channel of the cell adjacent to the cell can be ensured to be orthogonal to each other, the interference between the physical uplink control channel of the cell and the physical uplink control channel of the cell adjacent to the cell is prevented, and the transmission efficiency of the physical uplink control channel is improved.
Optionally, in another embodiment of the present invention, referring to fig. 2, the calculating to obtain the physical uplink control channel resource occupied by the set cell includes:
s201, calculating to obtain a physical downlink control channel resource occupied by a set cell in a set search space;
specifically, one PDCCH channel consists of several consecutive control channel elements CCE, where each CCE consists of 9 resource groups REG, each REG consists of 4 resource elements RE, and each RE maps one QPSK modulation symbol. Assume that the number of REGs available for PDCCH in the control channel is NREG(except for REGs for PCFICH and PHICH), the number of CCEs contained in each TTI isFrom 0 to NCCE-1 is numbered. When PDCCH allocation is carried out, a PDCCH channel containing n continuous CCEs can only allocate n CCEs continuously from a position where imodn is 0, wherein n CCEs are distributed continuouslyI is the CCE number and n is the aggregation level.
Specifically, the PDCCH resource used by the ue needs to be determined by the search space, and the calculation formula is as follows:
wherein n isCCERepresenting the first control channel element occupied by the PDCCH resource, n is determinedCCENamely, the resources occupied by the PDCCH are determined; l represents an aggregation level; k is the subframe number within one radio frame; n is a radical ofCCE,kRepresenting the total number of CCEs in the kth subframe control region; m represents a candidate PDCCH set; i-0, …, L-1; for a common search space YkFor a user-specific search space, Y is 0kIs a value associated with the RNTI and subframe number, defined as: y isk＝(A×Yk-1) mod D, in which Y-1＝nRNTI，A＝39827,D＝65537。
And calculating to obtain the physical downlink control channel resources occupied by the set cell through the formula.
S202, calculating to obtain the physical uplink control channel resource occupied by the cell according to the physical downlink control channel resource occupied by the cell.
Specifically, n is calculated by the formula in step S201CCEThen, further according to the formula
Or
Calculating to obtain the physical uplink control channel resource occupied by the cell
Steps S203 to S204 in this embodiment correspond to steps S102 to S103 in the embodiment of the method shown in fig. 1, and for details, please refer to the contents corresponding to the embodiment of the method shown in fig. 1, which is not described herein again.
Optionally, in another embodiment of the present invention, the adjusting the search space of the cell includes:
adjusting the aggregation level of the physical downlink control channel of the cell, or changing the candidate physical downlink control channel set of the cell.
Specifically, referring to the description of the above embodiment, the physical uplink control channel resource occupied by the cell is implicitly notified by the physical downlink control channel resource occupied by the cell, that is, the physical uplink control channel resource of the cell is determined by the physical downlink control channel resource occupied by the cell. The physical downlink control channel resources occupied by the cell are determined by the search space, so that the physical uplink control channel resources occupied by the cell can be changed by adjusting the search space of the cell. Specifically, adjusting the aggregation level of the physical downlink control channel of the cell, or changing the candidate physical downlink control channel set of the cell, can achieve the purpose of adjusting the search space of the cell.
Optionally, in another embodiment of the present invention, the determining whether the physical uplink control channel resource occupied by the cell meets a set orthogonal requirement includes:
judging whether the physical uplink control channel resources occupied by the cell meet the set frequency domain orthogonal requirement or not, or judging whether the physical uplink control channel resources occupied by the cell meet the set code domain orthogonal requirement or not;
and if the physical uplink control channel resources occupied by the cell meet the set frequency domain orthogonal requirement, or the physical uplink control channel resources occupied by the cell meet the set code domain orthogonal requirement, judging that the physical uplink control channel resources occupied by the cell meet the set orthogonal requirement.
Specifically, the physical uplink control channel resources occupied by the cell and the physical uplink control channel resources occupied by the neighboring cell of the cell may be orthogonal in the frequency domain or orthogonal in the code domain. The physical uplink control channel resource occupied by the cell meets the set frequency domain orthogonal requirement, which means that the physical uplink control channel frequency domain resource occupied by the cell is different from the physical uplink control channel frequency domain resource occupied by the adjacent cell of the cell; the physical uplink control channel resource occupied by the cell meets the set code domain orthogonal requirement, which means that the orthogonal sequence of the uplink subframe corresponding to the physical uplink control channel resource occupied by the cell is different from the orthogonal sequence of the uplink subframe corresponding to the physical uplink control channel resource occupied by the adjacent cell of the cell.
In practical implementation of the technical solution of the embodiment of the present invention, it is determined whether the physical uplink control channel resources occupied by the cell meet the corresponding orthogonal requirement on one aspect selected from a frequency domain or a code domain.
Optionally, in another embodiment of the present invention, the determining whether the physical uplink control channel resource occupied by the cell meets a set frequency domain orthogonal requirement includes:
judging whether the frequency domain resources occupied by the physical uplink control channel of the cell are different from the frequency domain resources occupied by the physical uplink control channel of the adjacent cell of the cell;
and if the frequency domain resources occupied by the physical uplink control channel of the cell are different from the frequency domain resources occupied by the physical uplink control channel of the adjacent cell of the cell, confirming that the physical uplink control channel resources occupied by the cell meet the set frequency domain orthogonal requirement.
Specifically, the frequency domain resource occupied by the physical uplink control channel of the cell is shown as the following formula:
wherein, under the normal CP, c is 3, under the extended CP, c is 2;provided by the upper layer; if the PUCCH1 series and 2 series are not transmitted in the same RB resource
With reference to the above formula, it should be noted thatAnd judging whether the physical uplink control channel resources occupied by the cell meet the set orthogonal requirement from the code domain. Under other conditions, the technical scheme of the embodiment of the invention is used for judging whether the physical uplink control channel resources occupied by the cell meet the set orthogonal requirement.
And calculating to obtain the frequency domain resource m occupied by the physical uplink control channel of the cell according to the formula. As long as m of the cell is different from m of the cell adjacent to the cell, it is considered that frequency domain resources occupied by the physical uplink control channel of the cell are different from frequency domain resources occupied by the physical uplink control channel of the cell adjacent to the cell, that is, the physical uplink control channel resources occupied by the cell meet the set frequency domain orthogonal requirement. Otherwise, the physical uplink control channel resource occupied by the cell is considered not to meet the set frequency domain orthogonal requirement
For example, suppose there are three neighboring cells cell1, cell2 and cell3, which satisfy different principles of networking PCI mod3, and the RRC parameters are consistent, where the related parameter settings are as follows: a normal CP.
In order to ensure that PUCCHs of cell1, cell2 and cell3 are orthogonal to each other, frequency domain orthogonality requirements are set for the three cells: ensuring that the frequency resources m mod3 occupied by the PUCCH of each cell are different; specifically, for cell1, setting the frequency domain orthogonality requirement m mod3 to 0; for cell2, setting the frequency domain orthogonality requirement m mod3 equal to 1; for cell3, setting the frequency domain orthogonality requirement m mod3 equal to 2; the value of m may coincide with the value of PCI mod 3. For each cell in the above cells, calculating a frequency resource m occupied by the PUCCH, which has the following specific formula:
by comparing m of cell1, cell2 and cell3, it can be determined whether the cell meets the set frequency domain orthogonality requirement. When each cell meets the frequency domain orthogonality requirement, PUCCHs of cell1, cell2 and cell3 are orthogonal to each other.
It should be noted that, for the three adjacent cells cell1, cell2, and cell3, the frequency domain orthogonality requirement of each cell does not have to be set to a value where m of each cell is specific. Theoretically, as long as m of each cell is different from each other, mutual orthogonality between the PUCCHs of the three cells can be guaranteed, that is, PUCCH resources occupied by the cells meet the frequency domain orthogonality requirement.
Optionally, in another embodiment of the present invention, the determining whether the physical uplink control channel resource occupied by the cell meets a set code domain orthogonality requirement includes:
judging whether the orthogonal sequence of the uplink subframe corresponding to the physical uplink control channel resource occupied by the cell is different from the orthogonal sequence of the uplink subframe corresponding to the physical uplink control channel resource occupied by the adjacent cell of the cell;
and if the orthogonal sequence of the uplink subframe corresponding to the physical uplink control channel resource occupied by the cell is different from the orthogonal sequence of the uplink subframe corresponding to the physical uplink control channel resource occupied by the adjacent cell of the cell, confirming that the physical uplink control channel resource occupied by the cell meets the code domain orthogonal requirement.
Specifically, the orthogonal sequence of the uplink subframe corresponding to the physical uplink control channel resource occupied by the cell is determined by the following formula:
wherein,d is 2, c is 3 under normal CP, d is 0, c is 2 under extended CP;provided by the upper layer;provided by an upper layer, if the PUCCH1 series and the 2 series are not transmitted in the same RB resource
Calculating the orthogonal sequence n of the uplink subframe corresponding to the physical uplink control channel resource occupied by the cell by the formulaoc(ns). As long as n of the above celloc(ns) N of a cell adjacent to the celloc(ns) All the orthogonal sequences are different, namely the orthogonal sequence of the uplink subframe corresponding to the PUCCH resource occupied by the cell is confirmed to be different from the orthogonal sequence of the uplink subframe corresponding to the PUCCH resource occupied by the adjacent cell of the cell, namely the physical uplink control channel resource occupied by the cell meets the set code domain orthogonal requirement. Otherwise, the physical uplink control channel resource occupied by the cell is considered not to meet the set code domain orthogonal requirement.
For example, suppose there are three neighboring cells cell1, cell2 and cell3, which satisfy different principles of networking PCI mod3, and the RRC parameters are consistent, where the related parameter settings are as follows:a normal CP.
In order to ensure that PUCCHs of cell1, cell2 and cell3 are orthogonal to each other, code domain orthogonality requirements are set for the three cells: ensuring orthogonal sequence n of uplink subframe corresponding to PUCCH resource occupied by each cell of cell1, cell2 and cell3oc(ns) Different; specifically, for cell1, n is requiredoc(ns) 0; for cell2, its n is requiredoc(ns) 1 is ═ 1; for cell3, its n is requiredoc(ns) 2. For the three cells, calculating the orthogonal sequence n of the uplink subframe corresponding to the PUCCH resources occupied by the three cellsoc(ns) The concrete formula is as follows:
since the orthogonal code of the second time slot is indirectly determined by the orthogonal code of the first time slot, it is only necessary to determine that the resources of the first time slot are orthogonal.
By comparing n for cell1, cell2, and cell3oc(ns) Then, it can be determined whether the cell meets the set code domain orthogonality requirement. When each cell meets the code domain orthogonality requirement, PUCCHs of cell1, cell2 and cell3 are orthogonal to each other.
It should be noted that, for the three adjacent cells cell1, cell2, and cell3, it is not necessary to set the code domain orthogonality requirement of each cell to n of each celloc(ns) Is a specific value. Theoretically, as long as n of each cell is guaranteedoc(ns) Different from each other, the mutual orthogonality among the PUCCHs of the three cells can be ensured, namely, PUCCH resources occupied by the cells meet the code domain orthogonality requirement.
The embodiment of the invention discloses a device for selecting channel resources, which is shown in figure 3 and comprises:
a calculating unit 301, configured to calculate and obtain a physical uplink control channel resource occupied by a set cell;
a determining unit 302, configured to determine whether a physical uplink control channel resource occupied by the cell meets a set orthogonal requirement; wherein, the set orthogonal requirement is a requirement for ensuring that the physical uplink control channel resources occupied by the cell and the physical uplink control channel resources occupied by the adjacent cells of the cell are all orthogonal to each other;
a processing unit 303, configured to, when the determining unit 302 determines that the physical uplink control channel resource occupied by the cell does not meet the set orthogonal requirement, repeatedly perform the following operations:
adjusting the search space of the cell, and invoking the calculating unit 301 to recalculate the physical uplink control channel resource occupied by the cell until the determining unit 302 determines that the physical uplink control channel resource occupied by the cell meets the set orthogonal requirement.
Specifically, please refer to the content of the corresponding method embodiment for the specific working content of each unit in this embodiment, which is not described herein again.
When the device for selecting channel resources provided by the embodiment of the present invention is applied to select physical uplink control channel resources for a set cell, first, the computing unit 301 obtains the physical uplink control channel resources occupied by the set cell through computation; then, the determining unit 302 determines whether the physical uplink control channel resource occupied by the cell meets the set orthogonal requirement; wherein, the set orthogonal requirement is a requirement for ensuring that the physical uplink control channel resources occupied by the cell and the physical uplink control channel resources occupied by the adjacent cells of the cell are all orthogonal to each other; if the physical uplink control channel resource occupied by the cell does not meet the set orthogonal requirement, the processing unit 303 repeatedly adjusts the search space of the cell and invokes the calculating unit 301 to recalculate the physical uplink control channel resource occupied by the cell until the determining unit 302 determines that the physical uplink control channel resource occupied by the cell meets the set orthogonal requirement. By using the device, the physical uplink control channel selected for the set cell and the physical uplink control channel of the cell adjacent to the cell can be ensured to be orthogonal to each other, the interference between the physical uplink control channel of the cell and the physical uplink control channel of the cell adjacent to the cell is prevented, and the transmission efficiency of the physical uplink control channel is improved.
Optionally, in another embodiment of the present invention, referring to fig. 4, the calculating unit 301 includes:
a first calculating unit 3011, configured to calculate a physical downlink control channel resource occupied by a set cell in a set search space;
a second calculating unit 3012, configured to calculate, according to the physical downlink control channel resource occupied by the cell, to obtain a physical uplink control channel resource occupied by the cell.
Specifically, please refer to the content of the corresponding method embodiment for the specific working content of each unit in this embodiment, which is not described herein again.
Optionally, in another embodiment of the present invention, when the processing unit 303 adjusts the search space of the cell, it is specifically configured to:
adjusting the aggregation level of the physical downlink control channel of the cell, or changing the candidate physical downlink control channel set of the cell.
Specifically, please refer to the content of the corresponding method embodiment for the specific working content of the processing unit 303 in this embodiment, which is not described herein again.
Optionally, in another embodiment of the present invention, when the determining unit 302 determines whether the physical uplink control channel resource occupied by the cell meets the set orthogonal requirement, specifically configured to:
judging whether the physical uplink control channel resources occupied by the cell meet the set frequency domain orthogonal requirement or not, or judging whether the physical uplink control channel resources occupied by the cell meet the set code domain orthogonal requirement or not; and if the physical uplink control channel resources occupied by the cell meet the set frequency domain orthogonal requirement, or the physical uplink control channel resources occupied by the cell meet the set code domain orthogonal requirement, judging that the physical uplink control channel resources occupied by the cell meet the set orthogonal requirement.
Specifically, please refer to the content of the corresponding method embodiment for the specific working content of the determining unit 302 in this embodiment, which is not described herein again.
Optionally, in another embodiment of the present invention, when the determining unit 302 determines whether the physical uplink control channel resource occupied by the cell meets the set frequency domain orthogonality requirement, it is specifically configured to:
judging whether the frequency domain resources occupied by the physical uplink control channel of the cell are different from the frequency domain resources occupied by the physical uplink control channel of the adjacent cell of the cell; and if the frequency domain resources occupied by the physical uplink control channel of the cell are different from the frequency domain resources occupied by the physical uplink control channel of the adjacent cell of the cell, confirming that the physical uplink control channel resources occupied by the cell meet the set frequency domain orthogonal requirement.
Specifically, please refer to the content of the corresponding method embodiment for the specific working content of the determining unit 302 in this embodiment, which is not described herein again.
Optionally, in another embodiment of the present invention, when the determining unit 302 determines whether the physical uplink control channel resource occupied by the cell meets the set code domain orthogonality requirement, it is specifically configured to:
judging whether the orthogonal sequence of the uplink subframe corresponding to the physical uplink control channel resource occupied by the cell is different from the orthogonal sequence of the uplink subframe corresponding to the physical uplink control channel resource occupied by the adjacent cell of the cell; and if the orthogonal sequence of the uplink subframe corresponding to the physical uplink control channel resource occupied by the cell is different from the orthogonal sequence of the uplink subframe corresponding to the physical uplink control channel resource occupied by the adjacent cell of the cell, confirming that the physical uplink control channel resource occupied by the cell meets the code domain orthogonal requirement.
Specifically, please refer to the content of the corresponding method embodiment for the specific working content of the determining unit 302 in this embodiment, which is not described herein again.
The embodiment of the invention discloses another channel resource selection device, and as shown in fig. 5, the device comprises:
a memory 501 and a processor 502;
the memory 501 is connected to the processor 502 and is used for storing programs and data generated during the program running process;
a processor 502 for implementing the following functions by executing the program stored in the memory 501:
calculating to obtain the physical uplink control channel resources occupied by the set cell; judging whether the physical uplink control channel resources occupied by the cell meet the set orthogonal requirement or not; wherein, the set orthogonal requirement is a requirement for ensuring that the physical uplink control channel resources occupied by the cell and the physical uplink control channel resources occupied by the adjacent cells of the cell are all orthogonal to each other; if the physical uplink control channel resources occupied by the cell do not meet the set orthogonal requirement, the search space of the cell is repeatedly adjusted and the physical uplink control channel resources occupied by the cell are recalculated until the physical uplink control channel resources occupied by the cell meet the set orthogonal requirement.
Specifically, please refer to the content of the corresponding method embodiment for the specific work content of each part in this embodiment, which is not described herein again.
When the selection device of channel resources provided by the embodiment of the present invention is applied to select physical uplink control channel resources for a set cell, the processor 502 first calculates and obtains the physical uplink control channel resources occupied by the set cell; then judging whether the physical uplink control channel resources occupied by the cell meet the set orthogonal requirement; wherein, the set orthogonal requirement is a requirement for ensuring that the physical uplink control channel resources occupied by the cell and the physical uplink control channel resources occupied by the adjacent cells of the cell are all orthogonal to each other; if the physical uplink control channel resources occupied by the cell do not meet the set orthogonal requirement, the search space of the cell is repeatedly adjusted and the physical uplink control channel resources occupied by the cell are recalculated until the physical uplink control channel resources occupied by the cell meet the set orthogonal requirement. By using the device, the physical uplink control channel selected for the set cell and the physical uplink control channel of the cell adjacent to the cell can be ensured to be orthogonal to each other, the interference between the physical uplink control channel of the cell and the physical uplink control channel of the cell adjacent to the cell is prevented, and the transmission efficiency of the physical uplink control channel is improved.
Optionally, in another embodiment of the present invention, when the processor 502 calculates and obtains the physical uplink control channel resource occupied by the set cell, the processor is specifically configured to:
calculating to obtain the physical downlink control channel resources occupied by the set cell in the set search space; and calculating to obtain the physical uplink control channel resources occupied by the cell according to the physical downlink control channel resources occupied by the cell.
Specifically, please refer to the contents of the corresponding method embodiment for the specific working contents of the processor 502 in this embodiment, which are not described herein again.
Optionally, in another embodiment of the present invention, when the processor 502 adjusts the search space of the cell, it is specifically configured to:
adjusting the aggregation level of the physical downlink control channel of the cell, or changing the candidate physical downlink control channel set of the cell.
Specifically, please refer to the contents of the corresponding method embodiment for the specific working contents of the processor 502 in this embodiment, which are not described herein again.
Optionally, in another embodiment of the present invention, when the processor 502 determines whether the physical uplink control channel resource occupied by the cell meets the set orthogonal requirement, it is specifically configured to:
judging whether the physical uplink control channel resources occupied by the cell meet the set frequency domain orthogonal requirement or not, or judging whether the physical uplink control channel resources occupied by the cell meet the set code domain orthogonal requirement or not; and if the physical uplink control channel resources occupied by the cell meet the set frequency domain orthogonal requirement, or the physical uplink control channel resources occupied by the cell meet the set code domain orthogonal requirement, judging that the physical uplink control channel resources occupied by the cell meet the set orthogonal requirement.
Specifically, please refer to the contents of the corresponding method embodiment for the specific working contents of the processor 502 in this embodiment, which are not described herein again.
Optionally, in another embodiment of the present invention, when the processor 502 determines whether the physical uplink control channel resource occupied by the cell meets the set frequency domain orthogonality requirement, it is specifically configured to:
judging whether the frequency domain resources occupied by the physical uplink control channel of the cell are different from the frequency domain resources occupied by the physical uplink control channel of the adjacent cell of the cell; and if the frequency domain resources occupied by the physical uplink control channel of the cell are different from the frequency domain resources occupied by the physical uplink control channel of the adjacent cell of the cell, confirming that the physical uplink control channel resources occupied by the cell meet the set frequency domain orthogonal requirement.
Specifically, please refer to the contents of the corresponding method embodiment for the specific working contents of the processor 502 in this embodiment, which are not described herein again.
Optionally, in another embodiment of the present invention, when the processor 502 determines whether the physical uplink control channel resource occupied by the cell meets the set code domain orthogonality requirement, it is specifically configured to:
judging whether the orthogonal sequence of the uplink subframe corresponding to the physical uplink control channel resource occupied by the cell is different from the orthogonal sequence of the uplink subframe corresponding to the physical uplink control channel resource occupied by the adjacent cell of the cell; and if the orthogonal sequence of the uplink subframe corresponding to the physical uplink control channel resource occupied by the cell is different from the orthogonal sequence of the uplink subframe corresponding to the physical uplink control channel resource occupied by the adjacent cell of the cell, confirming that the physical uplink control channel resource occupied by the cell meets the code domain orthogonal requirement.
Specifically, please refer to the contents of the corresponding method embodiment for the specific working contents of the processor 502 in this embodiment, which are not described herein again.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (13)
1. A method for selecting channel resources, comprising:
calculating to obtain the physical uplink control channel resources occupied by the set cell;
judging whether the physical uplink control channel resources occupied by the cell meet the set orthogonal requirement or not; wherein, the set orthogonal requirement is a requirement for ensuring that the physical uplink control channel resources occupied by the cell and the physical uplink control channel resources occupied by the adjacent cells of the cell are all orthogonal to each other;
if the physical uplink control channel resources occupied by the cell do not meet the set orthogonal requirement, the search space of the cell is repeatedly adjusted and the physical uplink control channel resources occupied by the cell are recalculated until the physical uplink control channel resources occupied by the cell meet the set orthogonal requirement.
2. The method of claim 1, wherein the calculating to obtain the physical uplink control channel resource occupied by the set cell includes:
calculating to obtain the physical downlink control channel resources occupied by the set cell in the set search space;
and calculating to obtain the physical uplink control channel resources occupied by the cell according to the physical downlink control channel resources occupied by the cell.
3. The method of claim 1, wherein the adjusting the search space of the cell comprises:
adjusting the aggregation level of the physical downlink control channel of the cell, or changing the candidate physical downlink control channel set of the cell.
4. The method of claim 1, wherein the determining whether the physical uplink control channel resource occupied by the cell meets a set orthogonality requirement includes:
judging whether the physical uplink control channel resources occupied by the cell meet the set frequency domain orthogonal requirement or not, or judging whether the physical uplink control channel resources occupied by the cell meet the set code domain orthogonal requirement or not;
and if the physical uplink control channel resources occupied by the cell meet the set frequency domain orthogonal requirement, or the physical uplink control channel resources occupied by the cell meet the set code domain orthogonal requirement, judging that the physical uplink control channel resources occupied by the cell meet the set orthogonal requirement.
5. The method according to claim 4, wherein said determining whether the physical uplink control channel resource occupied by the cell meets the set frequency domain orthogonal requirement includes:
judging whether the frequency domain resources occupied by the physical uplink control channel of the cell are different from the frequency domain resources occupied by the physical uplink control channel of the adjacent cell of the cell;
and if the frequency domain resources occupied by the physical uplink control channel of the cell are different from the frequency domain resources occupied by the physical uplink control channel of the adjacent cell of the cell, confirming that the physical uplink control channel resources occupied by the cell meet the set frequency domain orthogonal requirement.
6. The method of claim 4, wherein the determining whether the physical uplink control channel resource occupied by the cell meets the set code domain orthogonality requirement includes:
judging whether the orthogonal sequence of the uplink subframe corresponding to the physical uplink control channel resource occupied by the cell is different from the orthogonal sequence of the uplink subframe corresponding to the physical uplink control channel resource occupied by the adjacent cell of the cell;
and if the orthogonal sequence of the uplink subframe corresponding to the physical uplink control channel resource occupied by the cell is different from the orthogonal sequence of the uplink subframe corresponding to the physical uplink control channel resource occupied by the adjacent cell of the cell, confirming that the physical uplink control channel resource occupied by the cell meets the code domain orthogonal requirement.
7. An apparatus for selecting channel resources, comprising:
the calculating unit is used for calculating and obtaining the physical uplink control channel resources occupied by the set cell;
a judging unit, configured to judge whether a physical uplink control channel resource occupied by the cell meets a set orthogonal requirement; wherein, the set orthogonal requirement is a requirement for ensuring that the physical uplink control channel resources occupied by the cell and the physical uplink control channel resources occupied by the adjacent cells of the cell are all orthogonal to each other;
a processing unit, configured to repeatedly execute the following operations when the determining unit determines that the physical uplink control channel resource occupied by the cell does not meet the set orthogonal requirement:
and adjusting the search space of the cell, and calling the calculation unit to recalculate the physical uplink control channel resources occupied by the cell until the judgment unit judges that the physical uplink control channel resources occupied by the cell meet the set orthogonal requirement.
8. The apparatus of claim 7, wherein the computing unit comprises:
the first calculating unit is used for calculating to obtain the physical downlink control channel resources occupied by the set cell in the set search space;
and the second calculation unit is used for calculating and obtaining the physical uplink control channel resources occupied by the cell according to the physical downlink control channel resources occupied by the cell.
9. The apparatus of claim 7, wherein the processing unit, when adjusting the search space of the cell, is specifically configured to:
adjusting the aggregation level of the physical downlink control channel of the cell, or changing the candidate physical downlink control channel set of the cell.
10. An apparatus for selecting channel resources, comprising:
a memory and a processor;
wherein the memory is connected with the processor and used for storing programs;
the processor is used for realizing the following functions by running the program stored in the memory:
calculating to obtain the physical uplink control channel resources occupied by the set cell; judging whether the physical uplink control channel resources occupied by the cell meet the set orthogonal requirement or not; wherein, the set orthogonal requirement is a requirement for ensuring that the physical uplink control channel resources occupied by the cell and the physical uplink control channel resources occupied by the adjacent cells of the cell are all orthogonal to each other; if the physical uplink control channel resources occupied by the cell do not meet the set orthogonal requirement, the search space of the cell is repeatedly adjusted and the physical uplink control channel resources occupied by the cell are recalculated until the physical uplink control channel resources occupied by the cell meet the set orthogonal requirement.
11. The apparatus of claim 10, wherein when the processor determines whether the physical uplink control channel resource occupied by the cell meets the set orthogonal requirement, the processor is specifically configured to:
judging whether the physical uplink control channel resources occupied by the cell meet the set frequency domain orthogonal requirement or not, or judging whether the physical uplink control channel resources occupied by the cell meet the set code domain orthogonal requirement or not; and if the physical uplink control channel resources occupied by the cell meet the set frequency domain orthogonal requirement, or the physical uplink control channel resources occupied by the cell meet the set code domain orthogonal requirement, judging that the physical uplink control channel resources occupied by the cell meet the set orthogonal requirement.
12. The apparatus of claim 11, wherein when the processor determines whether the physical uplink control channel resource occupied by the cell meets a set frequency domain orthogonal requirement, the processor is specifically configured to:
judging whether the frequency domain resources occupied by the physical uplink control channel of the cell are different from the frequency domain resources occupied by the physical uplink control channel of the adjacent cell of the cell; and if the frequency domain resources occupied by the physical uplink control channel of the cell are different from the frequency domain resources occupied by the physical uplink control channel of the adjacent cell of the cell, confirming that the physical uplink control channel resources occupied by the cell meet the set frequency domain orthogonal requirement.
13. The apparatus of claim 11, wherein when the processor determines whether the physical uplink control channel resource occupied by the cell meets the set code domain orthogonality requirement, the processor is specifically configured to:
judging whether the orthogonal sequence of the uplink subframe corresponding to the physical uplink control channel resource occupied by the cell is different from the orthogonal sequence of the uplink subframe corresponding to the physical uplink control channel resource occupied by the adjacent cell of the cell; and if the orthogonal sequence of the uplink subframe corresponding to the physical uplink control channel resource occupied by the cell is different from the orthogonal sequence of the uplink subframe corresponding to the physical uplink control channel resource occupied by the adjacent cell of the cell, confirming that the physical uplink control channel resource occupied by the cell meets the code domain orthogonal requirement.
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