CN102075951A - Method and device for adjusting distribution positions of frequency-domain resources - Google Patents
Method and device for adjusting distribution positions of frequency-domain resources Download PDFInfo
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Abstract
The invention relates to the communication field, and discloses a method and device for adjusting distribution positions of frequency-domain resources, so as to ensure signal quality of a terminal when an uplink transmission is performed based on discontinuous frequency-domain resources. The method comprises the following steps: in a case that the uplink transmission is performed by using discontinuous frequency-domain resources in an LTE-A (long term evolution-advanced) system, a terminal can obtain a corresponding largest frequency-domain interval according to a network-environment-based MPR (multiple protocol router) threshold value; and then based on the largest frequency-domain interval, the distribution positions of discontinuous frequency-domain resources used by the terminal are adjusted, so as to ensure the interval between each frequency-domain resource not to exceed the determined largest frequency-domain interval. Therefore, when signals are transmitted on the adjusted discontinuous frequency-domain resources, out-of-band emission due to inter-modulation (IMD) generated between each frequency-domain resource is effectively reduced, and thus the transmission quality of uplink signals are ensured, so that adverse effects to system coexistence and system performance are avoided while gain for user performance brought by the discontinuous frequency-domain transmission is fully used.
Description
Technical Field
The present invention relates to the field of communications, and in particular, to a method and an apparatus for adjusting a frequency domain resource distribution position.
Background
In an LTE system based on the Rel-8 protocol, uplink transmission is localized transmission. For example, referring to fig. 1, the localized transmission refers to that a terminal transmits an uplink signal in a continuous frequency domain resource at the same time, where an uplink PUSCH (physical uplink shared channel) and a PUCCH (physical uplink control channel) are time-divided, that is, are not transmitted in the same subframe.
In the LTE-a system, uplink transmission is allowed on discontinuous frequency domain resources. Referring to fig. 2, uplink transmission is performed on non-continuous frequency domain resources in the following 3 cases:
1) PUSCH and PUCCH are transmitted simultaneously. Namely, the PUSCH and the PUCCH may be transmitted at the same time, and uplink transmission on discontinuous frequency domain resources is realized due to the position dispersion of the frequency domain resources of the PUSCH and the PUCCH.
2) And PUSCH multi-cluster transmission. That is, the frequency domain resource includes a plurality of discontinuous clusters, and when data transmission is performed through the PUSCH, uplink transmission on the discontinuous frequency domain resource is realized according to the plurality of divided clusters.
3) And performing uplink carrier aggregation transmission. The LTE-a system supports the carrier aggregation technology, and multiple aggregated component carriers perform data transmission simultaneously, and the frequency domain resources may also be discontinuous from the viewpoint of the overall aggregated bandwidth.
In practical applications, due to the nonlinearity of the radio frequency channel of the transmitter, when uplink transmission is performed on discontinuous frequency domain resources, spectrum regeneration is caused to generate intermodulation products (mainly 3-order intermodulation products), as shown in fig. 3, according to different scheduling positions of the frequency domain resources, positions of the generated intermodulation products are also different.
As shown in fig. 3, two uplink carriers CC1 and CC2 are combined, assuming that two discontinuous frequency domain resources F1 and F2 are carried in CC1, two discontinuous frequency domain resources F3 and F4 are carried in CC2, and F1 and F4 are at the edge of the frequency band, and the frequency bandwidth between the two is 40MHz, wherein it is assumed that PUCCH is transmitted at positions of F1 of CC1 and F4 of CC2, and at the same time, partial frequency domain resource transmission PUSCH is scheduled at positions of F2 of CC1 and F3 of CC 2. When uplink transmission is performed on discontinuous frequency domain resources, intermodulation products generated between each part of frequency domain resources are various, and as shown in fig. 3, the intermodulation products can be divided into:
1. in-band leakage; in this case, the intermodulation products fall predominantly within the frequency band; for example, IMD 2f2-f1 is shown in FIG. 3
2. Out-of-band leakage: in this case, the intermodulation products fall predominantly within the adjacent channel outside the band; for example, IMD 2f1-f4, IMD 2f1-f2, and IMD 2f2-f3 are shown in FIG. 3.
3. Stray leakage: in this case, the intermodulation products fall predominantly in channels that are far out of band.
As shown in fig. 3, various technical terms are explained as follows: PSD (Power Spectral Density), IMD (Inter-modulation), Spurious Emission, Out-of-band Emission, Transmission BW, Aggregated BW, CC (component carrier) LO (intermediate frequency).
Obviously, the intermodulation product generated by performing uplink transmission on discontinuous frequency domain resources may interfere with the uplink transmission signal of the terminal, thereby affecting the signal quality of the terminal, the performance of the system, and the coexistence of systems of different systems.
In order to solve the above problem, the embodiment of the present invention adopts the following two ways to solve:
scheme 1: uplink transmission is limited to be a centralized scheme and is not allowed. When uplink transmission is carried out on discontinuous frequency domain resources;
however, the scheme 1 limits the uplink transmission mode, cannot realize flexible scheduling of the network, and cannot bring certain performance gain to the system through uplink transmission on discontinuous frequency domain resources in partial scenes.
Scheme 2: uplink transmission is allowed to be performed on discontinuous frequency domain resources, and the terminal meets radio frequency indexes through an MPR (power backoff mechanism), thereby ensuring signal quality.
Although no limitation is imposed on the frequency domain resource usage mode of uplink transmission in scheme 2, the flexibility of frequency domain resource scheduling is increased because uplink transmission is allowed based on discontinuous frequency domain resources, and in various scenarios, if a terminal determines specific MPRs for each part of frequency domain resources, the implementation complexity of the terminal is increased, and the terminal performance is reduced; further, if the terminal formulates an excessively high MPR, the signal quality of the terminal may be affected.
Disclosure of Invention
The embodiment of the invention provides a method and a device for adjusting frequency domain resource distribution, which are used for ensuring the signal quality of a terminal when uplink transmission is carried out based on discontinuous frequency domain resources.
The embodiment of the invention provides the following specific technical scheme:
a method of adjusting a frequency domain resource distribution location, comprising:
determining a local maximum power back-off (MPR) threshold value based on a network environment;
acquiring a maximum frequency domain interval set corresponding to the MPR threshold value according to the acquired MPR threshold value;
and correspondingly adjusting the distribution position of the locally allocated discontinuous frequency domain resources according to the obtained maximum frequency domain interval, so that the frequency domain interval between the frequency domain resources does not exceed the maximum frequency domain interval.
An apparatus for adjusting a distribution position of frequency domain resources, comprising:
a determining unit, configured to determine a local Maximum Power Reduction (MPR) threshold based on a network environment;
an obtaining unit, configured to obtain, according to the obtained MPR threshold, a maximum frequency domain interval set corresponding to the MPR threshold;
and the adjusting unit is used for correspondingly adjusting the distribution position of the locally allocated discontinuous frequency domain resources according to the obtained maximum frequency domain interval, so that the frequency domain interval between the frequency domain resources does not exceed the maximum frequency domain interval.
In the embodiment of the invention, for a scene that discontinuous frequency domain resources are adopted to carry out uplink transmission in an LTE-A system, a terminal can obtain a corresponding maximum frequency domain interval according to an MPR threshold value determined based on a network environment, and then adjust the distribution position of the discontinuous frequency domain resources used by the terminal based on the maximum frequency domain interval, so that when signals are transmitted on the adjusted discontinuous frequency domain resources, the out-of-band leakage caused by intermodulation products generated among the frequency domain resources is effectively reduced, the transmission quality of uplink signals is ensured, and the adverse effects on the coexistence of the system and the performance of the system are avoided while the user performance gain caused by the discontinuous frequency domain transmission is fully utilized.
Drawings
Fig. 1 is a diagram illustrating centralized uplink transmission in the prior art;
fig. 2 is a diagram illustrating discontinuous uplink transmission according to the prior art;
FIG. 3 is a schematic diagram of the position of intermodulation products in the prior art;
FIG. 4 is a flowchart illustrating a process of a terminal adjusting a distribution position of frequency domain resources according to an embodiment of the present invention;
fig. 5 is a schematic diagram of PUSCH and PUCCH uplink single carrier bonding transmission in the embodiment of the present invention;
fig. 6 shows PUSCH uplink single carrier multi-cluster transmission in an embodiment of the present invention;
fig. 7A and 7B are schematic diagrams of PUCCH uplink multi-carrier transmission in an embodiment of the present invention;
fig. 8 is a diagram illustrating PUCCH uplink multi-carrier transmission in an embodiment of the present invention;
fig. 9 is a schematic diagram of a terminal function structure according to an embodiment of the present invention.
Detailed Description
In an LTE-a system, path losses of terminals located in different positions of a cell are different, so that allowed power back-off values are also different, and based on different power back-off values, a certain degree of gain is brought in the aspects of system performance, spectrum efficiency, scheduling flexibility, and the like by flexibly scheduling distributed frequency domain transmission.
The uplink transmission based on the discontinuous frequency domain resources may cause the transmission power to be dispersed and concentrated in several parts of frequency domain resources, and the resource types included in each part of frequency domain resources may be preset, for example, may include several numbers of PRBs (physical resource blocks), and the positions and influences of the frequency domain intermodulation products generated between any two parts of frequency domain resources depend on the positions of the two parts of frequency domain resources and the intervals between the two parts of frequency domain resources.
In practical application, if an intermodulation product generated between frequency domain resources of any two parts is in-band leakage, since uplink transmission signals are orthogonal, the influence of the intermodulation product on the uplink transmission signals is small and can be ignored. If the intermodulation product generated between the frequency domain resources of any two parts is stray leakage, the intermodulation product is mainly a high-order modulation product of a channel far away from the frequency band, so that the intermodulation product can be well inhibited by adopting a filter, and the influence is not large. If the intermodulation product generated between the frequency domain resources of any two parts is out-of-band leakage, the intermodulation product is mainly a 3-order intermodulation product of adjacent channels falling outside the frequency band, and the influence of the intermodulation product on uplink transmission signals is the largest; for example, in the worst scenario, two portions of frequency domain resources are respectively deployed at the edge of the aggregation bandwidth, and at this time, the MPR value of the uplink transmission signal transmission power selected by the terminal is the largest, so that the influence of the intermodulation product on the uplink transmission signal is also the most obvious.
Because the generation of the intermodulation product is inevitable, in the embodiment of the invention, in order to ensure the quality of the uplink transmission signal, the intermodulation product generated between the frequency domain resources of each part needs to fall in the spurious leakage range in a frequency band and out of the frequency band as much as possible, so that the influence of the intermodulation product on the uplink transmission signal is reduced to the greatest extent, and the system can be ensured to obtain the performance gain brought by the discontinuous transmission of the uplink frequency domain.
Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
In the embodiment of the present invention, mapping relationships between three parameters, i.e., a frequency domain interval, a frequency domain resource size, and a frequency domain resource starting position, and an MPR need to be set, and a configuration table may be established according to a certain granularity, for example: as shown in the table 1 below, the following examples,
TABLE 1
As shown in Table 1, assume that the system has configured two scattered frequency domain resources with a frequency domain starting position kL-startFor 20RB, transmission resource size jTrans-BWFor 80RB, and the maximum MPR value allowed for the current path loss can be determined to be 7dB according to the system configuration, the maximum frequency domain interval allowed for the current path loss can be known by looking up table 1, and as shown in table 1, first, the known k is determinedL-start、jTrans-BWThe maximum frequency domain interval may be 100RB if the MPR value does not exceed 7dB, that is, it is required to ensure that the maximum interval between the dispersed frequency domain resources does not exceed 100RB through system scheduling, and the smaller the frequency domain interval between the two dispersed frequency domain resources is, the smaller the leakage thereof is, and then the out-of-band leakage between the two dispersed frequency domain resources can be effectively avoided by reasonably setting the contents of each table entry in table 1 and by setting the maximum frequency domain interval.
Referring to fig. 4, based on the configuration table, in the embodiment of the present invention, a flowchart of adjusting the frequency domain resource distribution position by the terminal is as follows:
step 400: the terminal determines a local MPR threshold value, called MPR, based on the network environmentthreshould。
In practical applications, when performing step 400, the terminal may adopt the following manner:
firstly, the maximum MPR value allowed to be set corresponding to the path loss is determined according to the current path loss, and the determination is called as
Wherein the current path loss can be obtained from the measurement of the channel
Can be obtained by using a power conversion principle based on the current path loss.
Then, according to the preset user performance gain, determining the maximum MPR value allowed to be set corresponding to the user gain, which is called MPRUEWherein, MPRUEThe system may be determined in a system simulation manner based on a preset user gain.
Finally, willAnd MPRUEComparing and taking
And MPRUEThe one with smaller value in the above is taken as MPRthreshouldSuch as:
step 410: the terminal according to the obtainedObtain the correspondence
The set maximum frequency domain interval.
In the embodiment of the present invention, when step 410 is executed, the terminal needs to obtain the information according to the obtained information
And determining the corresponding maximum frequency domain interval according to the mapping relation recorded in the table 1 by combining the initial position of the currently allocated discontinuous frequency domain resource and the size of the frequency domain resource.
Step 420: and the terminal adjusts the distribution position of the frequency domain resources allocated to the terminal according to the obtained maximum frequency domain interval, so that the frequency domain interval between the frequency domain resources does not exceed the maximum frequency domain interval.
Of course, a corresponding number of frequency domain resources also need to be configured at the new distribution position according to the obtained size of the frequency domain resources, which is the same in the subsequent embodiments and will not be described again.
In practical applications, the execution manner of step 420 is different according to different application environments, and the following describes various execution manners of step 420 in further detail.
In the first case, PUSCH and PUCCH uplink single carrier bundled transmission.
Referring to fig. 5, the frequency domain resource carrying PUCCH is at the band edge, and the frequency domain resource carrying PUSCH is at positions 1 and 2 in the band, upon determining the MPR to be satisfied by the PUCCH and PUSCH transmissionsthreshouldAnd obtain the corresponding maximum frequency interval (called as) Then, the frequency domain resource carrying the PUSCH is adjusted from position 1 to position 1 'and from position 2 to position 2', so that the frequency domain resource carrying the PUSCH and the frequency domain resource carrying the PUCCH are guaranteed to be bound together, and the frequency domain interval between the frequency domain resource carrying the PUSCH and the frequency domain resource carrying the PUCCH is kept within the maximum allowable range (that is, does not exceed the determined maximum frequency domain interval), and further, when the terminal aims at the frequency domain resource carrying the PUCCHWhen the resource hops between the time slots, the frequency domain carrying the PUSCH also needs to be correspondingly hopped at the same time, so as to maintain the frequency domain interval between the two.
Further, when the quality requirement of the partial frequency band on the uplink transmission signal is high and the use requirement cannot be met after the frequency domain interval of the PUSCH and the PUCCH is adjusted according to the above method, a Rel-8 mode may be adopted, that is, the PUSCH and the PUCCH are subjected to time division transmission.
In the second case, PUSCH uplink single carrier multi-cluster transmission.
Referring to fig. 6, when the PUSCH is transmitted through divided discontinuous frequency domain resources (i.e. multiple clusters) within the entire aggregation bandwidth of a single uplink carrier, each cluster may be located within the same carrier or between different carriers), taking the example that each cluster is located within the same carrier, the MPR that is to be satisfied for PUSCH transmission is determinedthreshouldAnd obtain the corresponding maximum frequency interval (called as
) And then, adjusting the positions of the clusters bearing the PUSCH according to the maximum frequency domain interval, so that the frequency domain interval among the clusters does not exceed the determined maximum frequency domain interval. For example, as shown in fig. 6, the position of cluster # 2 is shifted, and the frequency domain interval between cluster # 2 and cluster # 1 is adjusted to the determined maximum frequency domain interval. Since the size of the out-of-band leakage is related to the starting position of the scattered frequency domain resources, the size of the frequency domain resources, and the frequency domain interval, the smaller the frequency domain interval between the frequency domain resources of each part is, the smaller the out-of-band leakage is, and the smaller the required MPR is.
Further, when the quality requirement of the partial frequency band for the uplink transmission signal is high, and the frequency domain interval between the plurality of clusters carrying the PUSCH is adjusted according to the above method and then the use requirement cannot be met, the Rel-8 mode, that is, the PUSCH is transmitted in a centralized manner.
In a third case, PUSCH uplink multi-carrier multi-cluster transmission.
As mentioned above, when multiple uplink carriers are aggregated and PUSCH transmission is performed simultaneously, PUSCH may be transmitted (both within a carrier and across carriers) divided into multiple frequency domain resources (i.e., multiple clusters) within the entire aggregation bandwidth; for a scenario in which a plurality of uplink carriers simultaneously perform PUSCH transmission, the following scheme is adopted:
MPR to be satisfied for PUSCH transmission on determined uplink carrierthreshouldAnd obtain the corresponding maximum frequency interval (called as
) And then, adjusting the positions of the clusters on the uplink carrier according to the maximum frequency domain interval, so that the frequency domain interval between the clusters does not exceed the determined maximum frequency domain interval.
For example, referring to FIG. 7A, assume that there are currently 4 clusters, the frequency domain resource starting position kL-start20RB, frequency domain resource size jTrans-BWIs 80RB, MPRthreshouldIf the frequency domain interval is 7dB, it can be known from table 1 that the corresponding maximum frequency domain interval is 100RB, and at this time, the position of the cluster 4 can be adjusted so that the frequency domain interval between the cluster 1 and the frequency domain interval is not more than 100RB, so that the user performance gain caused by discontinuous frequency domain transmission can be fully utilized, and meanwhile, the out-of-band leakage is ensured to be small, that is, the system coexistence and the system performance are not affected.
Different from the above mode, the MPR which is required to be satisfied by PUSCH transmission on the uplink carrier is determinedthreshouldAnd obtain the corresponding maximum frequency interval (called as
) Then, the number of the frequency domain resources in a single cluster can be increased by adjusting the number of the dispersed clusters, that is, the frequency domain resources contained in the designated cluster are allocated to other clusters, so that the frequency domain interval between the other clusters does not exceed the determined maximum transmission interval. For example, referring to FIG. 7B, assume that there are currently 4 clusters, the frequency domain resource starting position kL-start20RB, frequency domain resource size jTrans-BWIs 80RB, MPRthreshouldFor 7dB, it can be known from table 1 that the corresponding maximum inter-frequency domain interval is 100RB, and at this time, the frequency domain resources included in the cluster 4 are allocated to other clusters (for example, allocated to the cluster # 2 and the cluster # 3), and the frequency domain intervals between the cluster # 1 and the adjusted cluster # 2 and between the cluster # 1 and the adjusted cluster #3 do not exceed the maximum transmission interval, that is, 100RB, so that the frequency domain intervals between the clusters can be kept within the maximum allowable range, and thus, while the user performance gain caused by discontinuous frequency domain transmission is fully utilized, the out-of-band leakage is effectively reduced, that is, the system coexistence and the system performance are not affected. In order to achieve the optimal performance, it is preferable that the frequency domain resources included in the cluster at the edge of the band should be allocated to the cluster in the middle of the band.
Further, when the quality requirement of the uplink transmission signal by the partial frequency band is high and the usage requirement cannot be met after the interval between the frequency domain resources of each part is adjusted in the above manner, if the MPR value is too high and the system performance gain cannot be met, the Rel-8 mode, that is, the centralized mode is adopted for PUSCH uplink transmission.
In a fourth case, PUCCH uplink multi-carrier transmission.
Referring to fig. 8, assuming a scenario in which an uplink carrier simultaneously transmits PUCCH, PUCCH transmission is mainly transmitted on the upper and lower edges of a frequency band of the carrier, for example, PUCCH is transmitted on the lower sideband of CC1 and the upper sideband of CC2 on two carriers (referred to as CC1 and CC2), and the interval between the two carriers is approximately equal to the aggregation bandwidth at the maximum, where out-of-band leakage caused by intermodulation products generated between the two carriers is the largest, which seriously affects system coexistence and deteriorates system performance, and at this time, solutions that may be adopted include, but are not limited to, the following:
MPR to be satisfied in determining uplink carrier transmissionthreshouldAnd obtain the corresponding maximum frequency interval (called as
) And (3) after:
1. if the maximum frequency domain interval is determined to be more than or equal to BWCA/N, wherein BWCAIf the aggregation bandwidth is the aggregation bandwidth and N is the number of the currently aggregated uplink carriers, the position of the frequency domain resource bearing the PUCCH can be adjusted to the upper sideband or the lower sideband of each uplink carrier in order to ensure that each uplink carrier can simultaneously transmit the PUCCH;
for example, assuming that N is 2, referring to fig. 8, on CC1 and CC2, PUCCH may be simultaneously transmitted on location 1 or simultaneously transmitted on location 2.
2. If the maximum frequency domain interval is determined to be less than BWCAand/N, the PUCCH can be limited to be transmitted on only one uplink carrier at the same time.
3. Further, it is also possible to modify the PUCCH hopping scheme to allow inter-slot non-hopping, so that the PUCCHs of two component carriers can be transmitted in the center of the frequency band, as shown in fig. 8.
4. Further, if the power backoff value obtained by the user at the edge of the system is limited and cannot satisfy the user performance gain, the PUCCH and the PUSCH may be bundled for transmission, that is, the distribution position of the frequency domain resource may be adjusted in the first case.
Based on the above embodiments, referring to fig. 9, in an embodiment of the present invention, a terminal includes a determining unit 90, an obtaining unit 91, and an adjusting unit 92, wherein,
a determining unit 90, configured to determine a local maximum power reduction MPR threshold value based on a network environment;
an obtaining unit 91, configured to obtain, according to the obtained MPR threshold, a maximum frequency domain interval set corresponding to the MPR threshold;
the adjusting unit 92 is configured to correspondingly adjust the distribution position of the locally allocated discontinuous frequency domain resources according to the obtained maximum frequency domain interval, so that the frequency domain interval between the frequency domain resources does not exceed the maximum frequency domain interval.
In the embodiment of the invention, for a scene that discontinuous frequency domain resources are adopted to carry out uplink transmission in an LTE-A system, a terminal can obtain a corresponding maximum frequency domain interval according to an MPR threshold value determined based on a network environment, and then adjust the distribution position of the discontinuous frequency domain resources used by the terminal based on the maximum frequency domain interval, so that when signals are transmitted on the adjusted discontinuous frequency domain resources, the out-of-band leakage caused by intermodulation products generated among the frequency domain resources is effectively reduced, the transmission quality of uplink signals is ensured, and the adverse effects on the coexistence of the system and the performance of the system are avoided while the user performance gain caused by the discontinuous frequency domain transmission is fully utilized.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (14)
1. A method for adjusting distribution positions of frequency domain resources, comprising:
determining a local maximum power back-off (MPR) threshold value based on a network environment;
acquiring a maximum frequency domain interval set corresponding to the MPR threshold value according to the acquired MPR threshold value;
and correspondingly adjusting the distribution position of the locally allocated discontinuous frequency domain resources according to the obtained maximum frequency domain interval, so that the frequency domain interval between the frequency domain resources does not exceed the maximum frequency domain interval.
2. The method of claim 1, wherein the determining the local MPR threshold value based on the network environment comprises:
determining a first MPR with the maximum value corresponding to the path loss setting according to the current path loss;
determining a second MPR with the maximum value corresponding to the user gain setting according to the preset user gain;
and comparing the first MPR with the second MPR, and taking the smaller value as an MPR threshold value.
3. The method of claim 1, wherein the obtaining the maximum frequency domain interval set corresponding to the MPR threshold value according to the obtained MPR threshold value comprises:
determining an obtained MPR threshold value
Determining the initial position and the frequency domain resource size of the discontinuous frequency domain resources;
and acquiring a preset maximum frequency domain interval corresponding to the MRP threshold value, the initial position of the frequency domain resource and the size of the frequency domain resource.
4. The method according to claim 1, 2 or 3, wherein said adjusting the distribution position of the locally allocated frequency domain resources according to the obtained maximum frequency domain interval comprises:
and if the physical uplink shared channel PUSCH and the physical uplink control channel PUCCH are bound and transmitted in a single uplink carrier, and the frequency domain resource bearing the PUCCH is positioned at the edge of a frequency band, adjusting the frequency domain resource bearing the PUSCH to a corresponding position based on the maximum frequency domain interval and the position of the frequency domain resource bearing the PUCCH, and enabling the frequency domain interval between the frequency domain resource bearing the PUSCH and the frequency domain resource bearing the PUCCH not to exceed the maximum frequency domain interval.
5. The method according to claim 1, 2 or 3, wherein said adjusting the distribution position of the locally allocated frequency domain resources according to the obtained maximum frequency domain interval comprises:
and if the physical uplink shared channel PUSCH is borne on a plurality of clusters in a single uplink carrier wave for transmission, correspondingly adjusting the positions of the plurality of clusters bearing the PUSCH based on the maximum frequency domain interval, so that the frequency domain interval among the plurality of clusters does not exceed the maximum frequency domain interval.
6. The method according to claim 1, 2 or 3, wherein said adjusting the distribution position of the locally allocated frequency domain resources according to the obtained maximum frequency domain interval comprises:
if the PUSCH is borne on a plurality of clusters in a plurality of uplink carriers for transmission, correspondingly adjusting the positions of the clusters based on the maximum frequency domain interval to ensure that the frequency domain interval among the clusters does not exceed the maximum frequency domain interval; or,
and if the PUSCH is borne on a plurality of clusters in a plurality of uplink carriers for transmission, allocating the frequency domain resources contained in the designated cluster to other clusters based on the maximum frequency domain interval, and enabling the frequency domain interval between the other clusters not to exceed the determined maximum transmission interval.
7. The method according to claim 1, 2 or 3, wherein said adjusting the distribution position of the locally allocated frequency domain resources according to the obtained maximum frequency domain interval comprises:
if the physical uplink control channel PUCCH is carried in a plurality of uplink carriers for transmission, whether the maximum frequency domain interval is more than or equal to BW is judgedCAIf so, adjusting the position of the frequency domain resource bearing the PUCCH to the upper sideband or the lower sideband of each uplink carrier, and enabling the frequency domain interval between the positions of the frequency domain resources not to exceed the maximum frequency domain interval; otherwise, only one uplink carrier wave is transmitted PUCCH at the same time, wherein BWCAFor aggregated bandwidth, N is the number of currently aggregated uplink carriersMesh; or,
when a Physical Uplink Control Channel (PUCCH) is carried in a plurality of uplink carriers for transmission, the PUCCHs transmitted on each uplink carrier are concentrated in the center of a frequency band for transmission.
8. An apparatus for adjusting distribution positions of frequency domain resources, comprising:
a determining unit, configured to determine a local Maximum Power Reduction (MPR) threshold based on a network environment;
an obtaining unit, configured to obtain, according to the obtained MPR threshold, a maximum frequency domain interval set corresponding to the MPR threshold, where the maximum frequency domain interval is used to indicate a maximum frequency domain interval allowed for preventing an intermodulation product between two discontinuous frequency domain resources from generating out-of-band leakage;
and the adjusting unit is used for correspondingly adjusting the distribution position of the locally allocated discontinuous frequency domain resources according to the obtained maximum frequency domain interval, so that the frequency domain interval between the frequency domain resources does not exceed the maximum frequency domain interval.
9. The apparatus of claim 8, wherein the determining unit determines a first MPR with a largest value corresponding to the path loss setting according to a current path loss when determining the local MPR threshold based on the network environment, determines a second MPR with a largest value corresponding to the user gain setting according to a preset user gain, and compares the first MPR with the second MPR to determine that the smaller value is the MPR threshold.
10. The apparatus of claim 8, wherein the obtaining unit determines the obtained MPR threshold value when obtaining a maximum frequency domain interval set corresponding to the MPR threshold value according to the obtained MPR threshold value, determines a starting position and a frequency domain resource size of the discontinuous frequency domain resource, and obtains a preset maximum frequency domain interval corresponding to the MRP threshold value, the starting position and the frequency domain resource size.
11. The apparatus according to claim 8, 9 or 10, wherein when the adjusting unit adjusts the distribution position of the locally allocated frequency domain resources according to the obtained maximum frequency domain interval, if the PUSCH and the PUCCH are bundled and transmitted in a single uplink carrier and the frequency domain resource carrying the PUCCH is located at a band edge, the frequency domain resource carrying the PUSCH is adjusted to a corresponding position based on the maximum frequency domain interval and the position of the frequency domain resource carrying the PUCCH, so that the frequency domain interval between the frequency domain resource carrying the PUSCH and the frequency domain resource carrying the PUCCH does not exceed the maximum frequency domain interval.
12. The apparatus according to claim 8, 9 or 10, wherein when the adjusting unit correspondingly adjusts the distribution position of the locally allocated frequency domain resources according to the obtained maximum frequency domain interval, if a physical uplink shared channel, PUSCH, is carried on multiple clusters in a single uplink carrier for transmission, the positions of the multiple clusters carrying PUSCH are correspondingly adjusted based on the maximum frequency domain interval, so that the frequency domain interval between the multiple clusters does not exceed the maximum frequency domain interval.
13. The apparatus according to claim 8, 9 or 10, wherein when the adjusting unit adjusts the distribution position of the locally allocated frequency domain resources according to the obtained maximum frequency domain interval,
if the PUSCH is borne on a plurality of clusters in a plurality of uplink carriers for transmission, correspondingly adjusting the positions of the clusters based on the maximum frequency domain interval to ensure that the frequency domain interval among the clusters does not exceed the maximum frequency domain interval; or,
and if the PUSCH is borne on a plurality of clusters in a plurality of uplink carriers for transmission, allocating the frequency domain resources contained in the designated cluster to other clusters based on the maximum frequency domain interval, and enabling the frequency domain interval between the other clusters not to exceed the determined maximum transmission interval.
14. The apparatus according to claim 8, 9 or 10, wherein when the distribution positions of the locally allocated frequency domain resources are adjusted according to the obtained maximum frequency domain interval,
if the physical uplink control channel PUCCH is carried in a plurality of uplink carriers for transmission, whether the maximum frequency domain interval is more than or equal to BW is judgedCAIf so, adjusting the position of the frequency domain resource bearing the PUCCH to the upper sideband or the lower sideband of each uplink carrier, and enabling the frequency domain interval between the positions of the frequency domain resources not to exceed the maximum frequency domain interval; otherwise, only one uplink carrier wave is transmitted PUCCH at the same time, wherein BWCAFor the aggregation bandwidth, N is the number of uplink carriers currently aggregated; or,
when a Physical Uplink Control Channel (PUCCH) is carried in a plurality of uplink carriers for transmission, the PUCCHs transmitted on each uplink carrier are concentrated in the center of a frequency band for transmission.
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| PCT/CN2012/070560 WO2012097738A1 (en) | 2011-01-19 | 2012-01-19 | Method and device for adjusting distribution positions of frequency- domain resources |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012097738A1 (en) * | 2011-01-19 | 2012-07-26 | 大唐移动通信设备有限公司 | Method and device for adjusting distribution positions of frequency- domain resources |
| CN102769918A (en) * | 2011-05-05 | 2012-11-07 | 中兴通讯股份有限公司 | Allocation method for upstream discontinuous resource block and device thereof |
| WO2014026337A1 (en) * | 2012-08-15 | 2014-02-20 | 华为技术有限公司 | Power control method, base station and user equipment |
| WO2014032501A1 (en) * | 2012-08-28 | 2014-03-06 | 华为技术有限公司 | Signal transmission method and user terminal |
| CN105309016A (en) * | 2013-04-26 | 2016-02-03 | 联发科技股份有限公司 | Maximum output power configuration with ue preference in carrier aggregation |
| CN109451825A (en) * | 2017-11-24 | 2019-03-08 | 北京小米移动软件有限公司 | Intermodulation distortion indicating means and device, base station and user equipment |
| CN110100404A (en) * | 2016-12-22 | 2019-08-06 | 瑞典爱立信有限公司 | It is transmitted while PUSCH and PUCCH |
| CN111836294A (en) * | 2019-08-12 | 2020-10-27 | 维沃移动通信有限公司 | Test method and test apparatus |
| US12126561B2 (en) | 2016-12-22 | 2024-10-22 | Telefonaktiebolaget Lm Ericsson (Publ) | Simultaneous transmission of PUSCH and PUCCH |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9253735B2 (en) | 2012-10-02 | 2016-02-02 | Qualcomm Incorporated | Determining maximum power reduction (MPR) for multi-cluster wireless transmissions |
| US9426785B2 (en) * | 2013-05-20 | 2016-08-23 | Nokia Technologies Oy | Contiguous intra-band carrier aggregation (CA), PUCCH, and quasi-contiguous uplink resource allocation |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101674597A (en) * | 2009-09-30 | 2010-03-17 | 中兴通讯股份有限公司 | Method and device for evaluating interferences of different systems to terminal and overall interferences to terminal |
| WO2010082888A1 (en) * | 2009-01-14 | 2010-07-22 | Telefonaktiebolaget L M Ericsson (Publ) | Method and arrangement in a wireless communication system |
| US20100255868A1 (en) * | 2009-04-07 | 2010-10-07 | Lg Electronics Inc. | Control of uplink transmit power |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9370021B2 (en) * | 2008-07-31 | 2016-06-14 | Google Technology Holdings LLC | Interference reduction for terminals operating on neighboring bands in wireless communication systems |
| CN102075951B (en) * | 2011-01-19 | 2012-12-26 | 大唐移动通信设备有限公司 | Method and device for adjusting distribution positions of frequency-domain resources |
-
2011
- 2011-01-19 CN CN 201110021777 patent/CN102075951B/en active Active
-
2012
- 2012-01-19 WO PCT/CN2012/070560 patent/WO2012097738A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010082888A1 (en) * | 2009-01-14 | 2010-07-22 | Telefonaktiebolaget L M Ericsson (Publ) | Method and arrangement in a wireless communication system |
| US20100255868A1 (en) * | 2009-04-07 | 2010-10-07 | Lg Electronics Inc. | Control of uplink transmit power |
| CN101674597A (en) * | 2009-09-30 | 2010-03-17 | 中兴通讯股份有限公司 | Method and device for evaluating interferences of different systems to terminal and overall interferences to terminal |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012097738A1 (en) * | 2011-01-19 | 2012-07-26 | 大唐移动通信设备有限公司 | Method and device for adjusting distribution positions of frequency- domain resources |
| CN102769918A (en) * | 2011-05-05 | 2012-11-07 | 中兴通讯股份有限公司 | Allocation method for upstream discontinuous resource block and device thereof |
| CN102769918B (en) * | 2011-05-05 | 2017-04-05 | 中兴通讯股份有限公司 | A kind of distribution method and device of upstream discontinuous Resource Block |
| WO2014026337A1 (en) * | 2012-08-15 | 2014-02-20 | 华为技术有限公司 | Power control method, base station and user equipment |
| WO2014032501A1 (en) * | 2012-08-28 | 2014-03-06 | 华为技术有限公司 | Signal transmission method and user terminal |
| CN105309016A (en) * | 2013-04-26 | 2016-02-03 | 联发科技股份有限公司 | Maximum output power configuration with ue preference in carrier aggregation |
| CN110100404B (en) * | 2016-12-22 | 2023-01-20 | 瑞典爱立信有限公司 | Method and device for simultaneous transmission of PUSCH and PUCCH |
| CN110100404A (en) * | 2016-12-22 | 2019-08-06 | 瑞典爱立信有限公司 | It is transmitted while PUSCH and PUCCH |
| US12126561B2 (en) | 2016-12-22 | 2024-10-22 | Telefonaktiebolaget Lm Ericsson (Publ) | Simultaneous transmission of PUSCH and PUCCH |
| CN109451825A (en) * | 2017-11-24 | 2019-03-08 | 北京小米移动软件有限公司 | Intermodulation distortion indicating means and device, base station and user equipment |
| US11323144B2 (en) | 2017-11-24 | 2022-05-03 | Beijing Xiaomi Mobile Software Co., Ltd. | Method and device for indicating inter-modulation distortion, base station, and user equipment |
| CN109451825B (en) * | 2017-11-24 | 2022-02-01 | 北京小米移动软件有限公司 | Intermodulation interference indication method and device, base station and user equipment |
| CN111836294B (en) * | 2019-08-12 | 2023-06-23 | 维沃移动通信有限公司 | Test method and test device |
| CN111836294A (en) * | 2019-08-12 | 2020-10-27 | 维沃移动通信有限公司 | Test method and test apparatus |
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| WO2012097738A1 (en) | 2012-07-26 |
| CN102075951B (en) | 2012-12-26 |
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