CN114760698B

CN114760698B - PUCCH resource allocation method and device

Info

Publication number: CN114760698B
Application number: CN202210389497.5A
Authority: CN
Inventors: 曹慧; 梁柏青; 伍彦文; 董方维; 杨国刚
Original assignee: China Telecom Corp Ltd
Current assignee: China Telecom Corp Ltd
Priority date: 2022-04-13
Filing date: 2022-04-13
Publication date: 2023-11-14
Anticipated expiration: 2042-04-13
Also published as: CN114760698A

Abstract

The disclosure provides a PUCCH resource allocation method and device; relates to the technical field of communication. The method comprises the following steps: acquiring User Equipment (UE) information to be scheduled and uplink signal quality information of the UE; grouping the UE to be scheduled based on the uplink signal quality information when the number of the UE to be scheduled is larger than a target threshold; and carrying out PUCCH resource allocation on each group of UE to be scheduled in the grouping result so that the first resource isolation between groups is greater than the second resource isolation in the groups. The method and the device can solve the problem of PUCCH demodulation performance degradation caused by multi-user multiplexing of PUCCH resources in the related art.

Description

PUCCH resource allocation method and device

Technical Field

The disclosure relates to the technical field of communication, and in particular relates to a method and a device for allocating physical uplink control channel (physical uplink control channel, PUCCH) resources.

Background

In the fifth generation mobile communication (5th Generation Mobile Communication,5G) system, a User Equipment (UE) may access a plurality of component carriers for data transceiving according to its capability and service requirements. For accurate and efficient communication between a base station and UEs, video resources are divided, and resource multiplexing among a plurality of UEs can be an important means for improving resource utilization.

In the related art, multi-user multiplexing of PUCCH resources is achieved through cyclic shift in the frequency domain. In practical application, in order to improve the detection performance of the PUCCH, the base station does not use all the cyclic shift values, but sets a fixed cyclic shift sequence interval to implement resource multiplexing. However, when users having a large difference in signal quality are allocated to the same PUCCH resource, PUCCH demodulation performance of users having a poor signal quality may be severely deteriorated. Therefore, how to improve the PUCCH resource utilization rate on the premise of ensuring PUCCH demodulation performance becomes a technical problem in this field.

It should be noted that the information disclosed in the above background section is only for enhancing understanding of the background of the present disclosure and thus may include information that does not constitute prior art known to those of ordinary skill in the art.

Disclosure of Invention

The embodiment of the disclosure aims to provide a PUCCH resource allocation method and device, and further solve the problem of PUCCH demodulation performance degradation caused by multi-user multiplexing of PUCCH resources in the related art to a certain extent.

According to a first aspect of the present disclosure, there is provided a PUCCH resource allocation method, the method including: acquiring User Equipment (UE) information to be scheduled and uplink signal quality information of the UE; the UE information to be scheduled comprises the quantity information of the UE to be scheduled; when the quantity information of the UE to be scheduled is larger than a target threshold value, grouping the UE to be scheduled based on the uplink signal quality information to obtain a grouping result; performing Physical Uplink Control Channel (PUCCH) resource allocation on each group of UE to be scheduled in the grouping result so that the first resource isolation between different groups is greater than the second resource isolation in the same group; the isolation is orthogonal spreading codes in the time domain and/or cyclic shift sequence intervals in the frequency domain.

In an exemplary embodiment of the present disclosure, based on the foregoing scheme, the target threshold is determined based on the number of PUCCH resources, or the target threshold is determined based on the number of PUCCH resources and the number of UEs to be scheduled.

In an exemplary embodiment of the present disclosure, based on the foregoing scheme, grouping the UEs to be scheduled based on the uplink signal quality information includes: and grouping the UE to be scheduled based on the uplink signal quality information so that the uplink signal quality difference between the UE to be scheduled in the same group is smaller than the reference information corresponding to the group.

In an exemplary embodiment of the present disclosure, based on the foregoing solution, the uplink signal quality information includes signal strength information, and grouping the UEs to be scheduled based on the uplink signal quality information includes: sorting the UE to be scheduled based on the signal strength information; dividing the UE to be scheduled, of which the signal strength information is greater than a first threshold, into a first group; dividing the UE to be scheduled, of which the signal strength information is smaller than a second threshold, into a second group; grouping the primary rest UE based on the scheduling priority; the primary remaining UEs are UEs to be scheduled which are not divided into the first group and the second group.

In an exemplary embodiment of the present disclosure, based on the foregoing scheme, the grouping the one remaining UE based on the scheduling priority includes: selecting one UE from the primary rest UEs as a first reference based on the scheduling priority; determining UEs classified in a third group based on a comparison of the first signal strength difference with a third threshold; selecting one UE from the secondary rest UEs as a second reference based on the scheduling priority; the secondary remaining UE is UE which is not divided into a third group in the primary remaining UE; determining UEs classified in a fourth group based on a comparison of the second signal strength difference with a fourth threshold; repeating the steps until each UE to be scheduled is grouped; the first signal strength difference is a difference between the signal strength of each UE in the primary remaining UEs and the signal strength of the first reference, and the second signal strength difference is a difference between the signal strength of each UE in the secondary remaining UEs and the signal strength of the second reference.

In an exemplary embodiment of the present disclosure, based on the foregoing scheme, the performing PUCCH resource allocation on each group of UEs to be scheduled in the grouping result includes: determining a target group based on signal intensity information of a grouping result, and carrying out PUCCH resource allocation on UE of the target group; marking PUCCH resources adjacent to the index of the PUCCH resource of the target group as unavailable; and carrying out PUCCH resource allocation on other groups except the target group.

In an exemplary embodiment of the present disclosure, based on the foregoing solution, the performing PUCCH resource allocation on each group of UEs to be scheduled includes: multiplexing PUCCH resources of the UE in the first group based on the basic isolation; the basic isolation is determined based on the upper limit requirement of the PUCCH demodulation performance; multiplexing the PUCCH resources of the UE in the second group; and carrying out PUCCH resource allocation on the UE in the other groups except the first group and the second group based on the scheduling priority.

In an exemplary embodiment of the present disclosure, based on the foregoing scheme, the method further includes: and when the number of the UE to be scheduled is smaller than or equal to the target threshold value, increasing the isolation degree between PUCCH resources of the UE to be scheduled.

According to a second aspect of the present disclosure, there is provided a PUCCH resource allocation device, the device comprising: the acquisition module is used for determining UE information of a user terminal to be scheduled and uplink signal quality information of the UE, wherein the UE information and the uplink signal quality information of the UE need to be allocated with physical downlink control channel PDCCH resources; the UE information to be scheduled comprises the quantity information of the UE to be scheduled; the grouping module is used for grouping the UE to be scheduled based on the uplink signal quality information under the condition that the quantity information of the UE to be scheduled is larger than a target threshold value so as to obtain a grouping result; the resource allocation module is used for carrying out Physical Uplink Control Channel (PUCCH) resource allocation on each group of UE to be scheduled in the grouping result so that the first resource isolation between different groups is greater than the second resource isolation in the same group; the isolation is orthogonal spreading codes in the time domain and/or cyclic shift sequence intervals in the frequency domain.

According to a third aspect of the present disclosure, there is provided a computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the method of any one of the above.

According to a fourth aspect of the present disclosure, there is provided a network device comprising: a processor; and a memory for storing executable instructions of the processor; wherein the processor is configured to perform the method of any of the above via execution of the executable instructions.

Exemplary embodiments of the present disclosure may have some or all of the following advantages:

in the PUCCH resource allocation method provided by the disclosed example embodiment, UEs to be scheduled may be grouped based on uplink signal quality information, so that uplink signal quality differences between UEs to be scheduled in the same group in the grouping result are smaller, UEs with larger uplink signal quality differences may be effectively grouped in different groups, UEs with larger uplink signal quality differences in the same group are avoided, and further UEs with larger uplink signal quality differences are avoided from being allocated with the same PUCCH resource, and the influence of PUCCH resource multiplexing on demodulation performance is avoided; on the other hand, by means of resource allocation of the UEs of different groups, the first resource isolation between the different groups is greater than the second resource isolation in the same group, so that the same PUCCH resources can be multiplexed in the same group, and the PUCCH resource utilization rate is improved.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure. It will be apparent to those of ordinary skill in the art that the drawings in the following description are merely examples of the disclosure and that other drawings may be derived from them without undue effort.

Fig. 1 schematically illustrates an exemplary scenario architecture diagram of a PUCCH resource allocation method and apparatus according to one embodiment of the present disclosure.

Fig. 2 schematically illustrates a flowchart of a PUCCH resource allocation method according to one embodiment of the present disclosure.

Fig. 3 schematically illustrates a flow diagram for grouping UEs to be scheduled in one embodiment according to the disclosure.

Fig. 4 schematically illustrates a flow diagram for grouping one-time remaining UEs in one embodiment according to the disclosure.

Fig. 5 schematically illustrates a flow diagram for grouping UEs to be scheduled in one embodiment according to the disclosure.

Fig. 6 schematically illustrates a block diagram of a PUCCH resource allocation device in an embodiment according to the present disclosure.

Fig. 7 illustrates a block diagram of a network device suitable for use in implementing embodiments of the present disclosure.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments may be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the present disclosure. However, those skilled in the art will recognize that the aspects of the present disclosure may be practiced with one or more of the specific details, or with other methods, components, devices, steps, etc. In other instances, well-known technical solutions have not been shown or described in detail to avoid obscuring aspects of the present disclosure.

Furthermore, the drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus a repetitive description thereof will be omitted. Some of the block diagrams shown in the figures are functional entities and do not necessarily correspond to physically or logically separate entities. These functional entities may be implemented in software or in one or more hardware modules or integrated circuits or in different networks and/or processor devices and/or microcontroller devices.

In a wireless communication system, to ensure accurate and efficient communication between a UE and a base station, the UE needs to feed back uplink control information (Uplink Control Information, UCI) to the base station. The uplink control information includes: scheduling request indication (Scheduling Request Indicator, SR); acknowledgement/Negative Acknowledgement (ACK/NACK); channel quality indication (Channel Quality Indicator, CQI), rank Indicator (RI), and precoding matrix indication (Precoding Matrix Indicator, PMI). The SR is used for the UE to request uplink resources from the base station, the ACK/NACK is used for the UE to indicate whether the downlink data is received correctly or not to the base station, and the CQI and other information are used for the UE to indicate the measured downlink channel quality to the base station. In the communication system, the base station allocates special physical uplink control channel resources for the UE to transmit the three types of control information, namely the SR, the ACK/NACK and the CQI/RI/PMI.

Referring to fig. 1, an exemplary system diagram of a PUCCH resource allocation method and apparatus is provided in the present invention, and as shown in fig. 1, a system 100 shown in an embodiment of the present invention may include a user terminal UE 101, a radio access network 102, and a base station 103. Wherein the user equipment UE 101 may be a computer device, a mobile terminal device, for example, a mobile terminal including, but not limited to, a tablet computer, a POS (point of sales), a car computer, etc.; the user equipment may also be a mobile station, a subscriber station, a wireless device, etc., which is not limited in this example. Base station 102 may include at least one of an evolved NodeB (eNB) and a gNB (5G base station), and may also include other types of base stations, which are not limited in this example. The radio access network 102 may exchange multimedia data or other data with the terminal, which is not limited in this example.

In this example, after determining PUCCH resource allocation of different UEs 101, the base station 103 sends the allocation result to the corresponding UE 101 through downlink control information; the UE 101 transmits three kinds of control information, namely SR, ACK/NACK and CQI/RI/PMI, to the base station 103 according to the received PUCCH resource allocation result.

Referring to fig. 2, the PUCCH resource allocation method according to an exemplary embodiment provided by the present disclosure may be applied to a base station of a 5G communication system, and may include the following steps:

Step S210, obtaining UE information of a user terminal to be scheduled and uplink signal quality information of the UE.

In this example embodiment, the UE information to be scheduled may be obtained from a downlink to-be-scheduled queue. The UE information to be scheduled may include terminal identification information of the UE and/or number information of the UE. The UE to be scheduled may be a user with downlink traffic or a user needing downlink channel control resource allocation, which is not particularly limited in this example. The uplink signal quality information may include at least one of signal quality (such as signal-to-noise ratio, signal-to-interference-and-noise ratio), signal strength, and signal power of the uplink control information sent by the UE, and may further include other information related to signal quality, which is not limited in this example.

Step S220, grouping the UE to be scheduled based on the uplink signal quality information to obtain a grouping result when the number information of the UE to be scheduled is larger than the target threshold.

In the present exemplary embodiment, the target threshold value may be a fixed value set empirically or may be dynamically adjusted according to history data and changes in the communication environment. For a dynamically adjusted target threshold, the number R of PUCCH resources can be based _PUCCH Determining a target threshold (e.g., the target threshold may be set to R _PUCCH /2), or may be based on the number R of PUCCH resources _PUCCH And the number N of UEs to be scheduled _UE Determining a target threshold (e.g., the target threshold may be set to R _PUCCH /N _UE A multiple of rounding).

In this example embodiment, when the number of UEs to be scheduled is greater than the target threshold, the UEs to be scheduled may be grouped based on the uplink signal quality information. For example, UEs with similar uplink signal quality can be divided into the same group, so that PUCCH resource multiplexing can be performed on UEs in the same group.

Step S230, physical Uplink Control Channel (PUCCH) resource allocation is carried out on each group of UE to be scheduled in the grouping result so that the first resource isolation is greater than the second resource isolation.

In this example embodiment, the first resource isolation may be an isolation between PUCCH resources of UEs to be scheduled among different groups; the second resource isolation degree is the isolation degree between PUCCH resources of the UE to be scheduled in the same group. The isolation is the orthogonal spreading code in the time domain and/or the cyclic shift sequence spacing in the frequency domain. For example, the cyclic shift offset used in the frequency domain may be set to 2, i.e., the isolation degree is 2. In this example, the greater the isolation, the less the resource multiplexing, and the less the effect on demodulation performance may be generated; the smaller the isolation, the higher the resource multiplexing rate, and the larger the influence on demodulation performance may be. Therefore, rationally planning the isolation of each group has an important impact on channel quality.

In this example embodiment, different isolation may be set for each group of UEs to ensure that the isolation of UEs between the same group is smaller and the isolation of UEs between different groups is larger.

In the PUCCH resource allocation method provided in this exemplary embodiment, UEs to be scheduled may be grouped based on uplink signal quality information, so that uplink signal quality differences between UEs to be scheduled in the same group in the grouping result are smaller, UEs with larger uplink signal quality differences may be effectively grouped in different groups, UEs with larger uplink signal quality differences in the same group are avoided, and further UEs with larger uplink signal quality differences are avoided from being allocated with the same PUCCH resource, and the influence of PUCCH resource multiplexing on demodulation performance is avoided; on the other hand, by means of resource allocation of the UEs of different groups, the first resource isolation between the different groups is greater than the second resource isolation in the same group, so that the same PUCCH resources can be multiplexed in the same group, and the PUCCH resource utilization rate is improved.

In another embodiment, the above steps are described in more detail below.

In some embodiments, grouping UEs to be scheduled based on uplink signal quality information includes:

And grouping the UEs to be scheduled based on the uplink signal quality information so that the uplink signal quality difference between the UEs to be scheduled in the same group is smaller than the reference information corresponding to the group.

In this example embodiment, the uplink signal quality information may include uplink signal strength information. When the number of the UE is large, the UE can be grouped according to the uplink signal quality information, and the UE with similar uplink signal quality is divided into the same group, so that the subsequent resource multiplexing is facilitated. The reference information corresponding to each group refers to the minimum signal quality difference value between the UEs in each group, and the value can be dynamically adjusted according to actual conditions. For example, the reference information of the UE packet with higher uplink signal quality may be set larger, and the reference information of the UE packet with lower uplink signal quality may be set smaller.

In some embodiments, referring to fig. 3, grouping UEs to be scheduled based on uplink signal quality information includes:

step S310, based on the signal intensity information, ordering the UE to be scheduled.

In this example embodiment, the uplink signal quality information includes signal strength information, and all UEs to be scheduled may be ordered according to signal strength from high to low or from low to high.

In step S320, UEs to be scheduled whose signal strength information is greater than a first threshold are divided into a first group.

In this example embodiment, the first threshold may be set based on PUCCH received power or signal to interference and noise ratio (Signal to Interference plus Noise Ratio, SINR). For example, the first threshold may be set to a certain percentage of PUCCH received power. The first threshold may also be set to PUCCH signal to interference noise ratio. This example is not limited thereto.

Step S330, the UE to be scheduled with signal strength information smaller than the second threshold is divided into a second group.

In the present exemplary embodiment, the second threshold may be set according to PUCCH demodulation performance, for example, the second threshold may be set to a signal strength value capable of guaranteeing PUCCH demodulation performance upper limit configuration. The second threshold may also be dynamically adjusted based on historical data or experience.

Step S340, grouping the remaining UEs at one time based on the scheduling priority.

In the present exemplary embodiment, the remaining UEs at a time are UEs to be scheduled that are not divided into the first group and the second group. The scheduling priority refers to a scheduling sequence determined according to information such as a UE type, a service type, a transmission level, records of the UE and a base station, and the like. The scheduling priority may be performed according to the 3GPP standard, or may be customized, which is not limited in this example.

In some embodiments, referring to fig. 4, grouping the one-time remaining UEs based on scheduling priority may be achieved through steps S410-S470.

In step S410, one UE is selected from the remaining UEs at a time as the first reference based on the scheduling priority.

In this example embodiment, the scheduling priority may be performed according to the 3GPP standard, or the scheduling priority may be customized, which is not limited in this example. In this example, the UE with the highest scheduling priority may be selected as the first reference from among the remaining UEs at one time.

Step S420, judging whether the first signal strength difference is smaller than a third threshold, if yes, turning to step S430, otherwise turning to step S440.

In this example embodiment, the first signal strength difference may be a difference between a signal strength of each of the remaining UEs at a time and a signal strength of the first reference. The third threshold may be set based on signal strength and experience of the remaining UEs at a time.

In step S430, the UEs are divided into a third group (i.e., the same group as the first reference UE).

Step S440, judging whether there is a UE without grouping, if yes, then carrying out next round grouping on the rest UE (if yes, turning to step S450), otherwise, completing grouping.

Step S450, selecting one UE from the secondary rest UEs as a second reference based on the scheduling priority.

In the present exemplary embodiment, the secondary remaining UEs are UEs not divided into the third group among the primary remaining UEs. The UE with the highest scheduling priority among the secondary remaining UEs may be selected as the second reference.

Step S460, judging whether the second signal strength difference is smaller than the fourth threshold, if yes, turning to step S470, otherwise, turning to step S440.

In this example embodiment, the second signal strength difference is a difference between the signal strength of each of the secondarily remaining UEs and the signal strength of the second reference. The fourth threshold may be the same as or different from the third threshold, which is not limited in this example.

In step S470, the UEs are divided into a fourth group (i.e., the same group as the second reference UE).

For example, referring to fig. 5, which is an exemplary embodiment of the present disclosure, grouping of UEs to be scheduled is achieved by the following steps.

In step S501, the base station acquires UE information to be scheduled and uplink signal quality information of the UE.

In this example, the UE information to be scheduled may include UE identification information, and may also include UE number information. The uplink signal quality information may include uplink signal strength. The above information may be obtained from UCI or other information fed back to the base station by the UE.

Step S502, the base station judges whether the number of the UE to be scheduled is larger than a target threshold, if yes, the step S504 is shifted to, otherwise, the step S503 is shifted to.

In this example, the target threshold may be dynamically adjusted during each round of UE interaction with the base station or during a scheduling period. For example, the target threshold may be set to half of the total number of UEs.

In step S503, the base station increases isolation between PUCCH resources of the UE to be scheduled.

In this example, when the number of UEs is small, the UE resource isolation may be increased, and multiplexing may be reduced, for example, the isolation may be maximally adjusted to a ratio of the number of resource blocks/the number of UEs, and rounded down. Increasing the isolation can better ensure the demodulation success rate of the PUCCH. For example, adjacent resources of PUCCH resources that have been allocated are identified as unavailable to limit other user scheduling.

In step S504, the base station orders the UEs to be scheduled based on the signal strength information.

Step S505, judging whether the UE signal strength is larger than a first threshold, if yes, turning to step S506, otherwise, turning to step S507.

In this example, the first threshold may be set based on the received power or SINR of the PUCCH. For example, the first threshold is set to the received power of the PUCCH.

In step S506, the UEs are divided into a first group.

Step S507, judging whether the signal intensity of the UE is smaller than a second threshold, if yes, turning to step S508, otherwise, turning to step S509.

In this example, the second threshold is a threshold for dividing the weaker UE, and may be set based on demodulation performance. The group of UEs needs to increase resource isolation from other UEs.

In step S508, the UEs are divided into a second group.

Step S509, judging whether there is a UE without grouping, if yes, turning to step S510, otherwise, grouping is completed.

In step S510, the base station selects one UE from the remaining UEs not classified into the group as a reference UE based on the scheduling priority.

In this example, the UE group with the highest scheduling priority may be selected as the reference UE.

In step S511, the base station traverses each UE in the remaining UEs, compares whether the intensity difference between each UE and the first reference is smaller than the third threshold, if yes, proceeds to step S512, otherwise, proceeds to step S509.

In this example, UEs that are not classified into the first group and the second group may be regarded as remaining UEs, and the entire remaining UEs may be regrouped after each reference UE selection is completed, while retaining the previously grouped results until the remaining UEs are all grouped. In this example, the same UE may be divided into different packets to increase packet flexibility, so that the multi-packet UE may have multiple alternative PUCCH resource allocation schemes, so as to facilitate coordination of the resource allocation process.

In step S512, the UEs are divided into the same group as the reference UE.

In some embodiments, performing PUCCH resource allocation for each group of UEs to be scheduled in the grouping result includes:

first, a target group is determined based on signal strength information of a grouping result, and PUCCH resource allocation is performed for UEs of the target group.

In this example, one or several groups of UEs with the highest signal strength in the grouping result may be regarded as the target group. Firstly, carrying out PUCCH resource allocation on the UE in the target group, and then carrying out resource allocation on other groups. For example, PUCCH resource allocation may be performed according to scheduling priority for UEs in the target group.

Second, PUCCH resources adjacent to the index of the PUCCH resource of the target group are marked as unavailable.

In this example, to increase the inter-group resource isolation, adjacent resources of PUCCH resources that have been allocated may be marked as unavailable. For example, if the PUCCH resource block indexes allocated by the target group are 2 and 3, the PUCCH resource blocks with index numbers 1 and 4 may be marked as unavailable, so as to limit the use of the PUCCH resource blocks with index numbers 1 and 4 by other groups.

Finally, PUCCH resource allocation is performed for the other groups except the target group.

In this example, the sequence of resource allocation may be determined between groups of other groups according to the UE signal strength, and the resource allocation may be performed within a group according to the scheduling priority.

In some embodiments, PUCCH resource allocation is performed for each group of UEs to be scheduled, including:

first, PUCCH resources of UEs in a first group are multiplexed based on a basic isolation.

In this example, the basic isolation is determined based on the upper limit requirement of PUCCH demodulation performance. The available PUCCH resources may be configured according to basic isolation requirements. For example, PUCCH resources for hybrid automatic repeat request-ACK (Hybrid Automatic Repeat reQuest-ACK, HARQ-ACK) feedback are configured at PUCCH set0, and a maximum of 32 PUCCH resources can be configured, where any two PUCCH resources are required to meet the basic isolation requirement, and the basic isolation can be characterized as an offset of 2, and then the available PUCCH resource pool is planned according to the offset of 2.

In this example, the first group of UEs has higher signal strength and stronger anti-interference capability, so that PUCCH resources can be configured according to the basic isolation requirement, resources can be multiplexed to the maximum extent, and resource utilization rate is improved.

Second, PUCCH resources of UEs in the second group are not multiplexed.

In this example, the second group of UEs is weak in signal strength, the group of UEs has poor anti-interference capability, and in order to ensure demodulation performance, the UEs in the group do not perform PUCCH resource multiplexing.

Finally, based on the scheduling priority, PUCCH resource allocation is performed for UEs in other groups than the first group and the second group.

In this example, the resource allocation may be performed according to the scheduling priority for the packets with weaker signal strength.

In the present disclosure, the resource location used by the PUCCH may be determined according to the PUCCH resource index indication in the PDCCH start control channel element CCE and the downlink control information DCI. And for the case that the number of the UE to be scheduled is larger than the number of the PUCCH resources, the resource allocation can be carried out according to the scheduling priority. And after the PUCCH resource allocation is completed, the PUCCH resource allocation can be sent to the corresponding UE through the PDCCH.

For example, the PUCCH resource allocation procedure of the present example is as follows: HARQ-ACK feedback is performed using PUCCH format1, and parameters are set as follows: the transmission is performed using 14 orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing, OFDM) and Intra-slot multiplexing (inter-slot modulation) is used. Since the cyclic shift offset used in the frequency domain is set to 2, a total of 6 frequency domain cyclic shift sequences and 3 time domain spreading sequences can be used for resource multiplexing in one Resource Block (RB), that is, 12 consecutive subcarriers in the frequency domain or one slot (slot) in the time domain. An initial PUCCH resource pool is allocated, and a total of 32 PUCCH resources can be allocated by requiring two RB resources.

When a certain scheduling time is set to 16 users to be subjected to downlink scheduling, and 16 is equal to half of the number of RPUCCH resource blocks, when resource allocation is performed according to priority, one UE marks adjacent PUCCH resources as unavailable after the PUCCH resources are allocated, so that the isolation of the PUCCH is increased.

It is assumed that 16 users need to perform downlink scheduling at a certain scheduling time, and the number of the UEs in four groups is 4, 5, 4 and 3 according to the distribution of the signal intensity from high to low, where the groups can be divided into 4 groups according to the signal intensity. And then the resource allocation is carried out among the groups according to the signal intensity of the groups, namely, the PUCCH resource allocation of the group corresponding to the highest signal intensity is carried out firstly, then the resource allocation is carried out on the group with the next highest signal intensity, and so on. And after one group of resources are allocated, the adjacent index number resources of the allocated PUCCH resources can be marked as unavailable so as to increase the inter-group separation degree.

According to the method and the device, on the one hand, the available PUCCH resources can be configured by setting the basic isolation according to the demodulation performance upper limit configuration requirement of the physical layer, so that the demodulation performance of the physical layer is ensured, and a reliable resource pool is provided for subsequent PUCCH resource allocation. On the other hand, by grouping the UE, the influence of inter-user interference on the demodulation performance of the small-signal user is avoided, and therefore the problem of poor borrowing performance of the small-signal user is solved. Proper multiplexing isolation can be selected for different users, so that multiplexing of multiple users is guaranteed not to influence demodulation of the PUCCH, and downlink redundant transmission or unnecessary packet loss caused by PUCCH error detection is reduced.

The method comprises the steps of sorting grouping results according to the sequence from high to low of signal quality, and distributing successive resources of different groups according to the sorting results. The UE in the group performs resource allocation according to the scheduling priority, and can determine the resources allocated and used by the UE through the initial CCE position and the PUCCH resource index indication in the DCI information, thereby ensuring the multiplexing performance of the PUCCH and the scheduling success rate.

Further, in this example embodiment, there is also provided a PUCCH resource allocation device 600. The PUCCH resource allocation device 600 may be applied to a base station. Referring to fig. 6, the PUCCH resource allocation apparatus 600 may include:

the acquiring module 610 may be configured to acquire UE information of a user equipment to be scheduled and uplink signal quality information of the UE.

The grouping module 620 may be configured to group the UEs to be scheduled based on the uplink signal quality information to obtain a grouping result when the number of UEs to be scheduled is greater than a target threshold.

The resource allocation module 630 may be configured to perform physical uplink control channel PUCCH resource allocation for each group of UEs to be scheduled in the grouping result, so that the first resource isolation is greater than the second resource isolation in the same group. The isolation is orthogonal spreading codes in the time domain and/or cyclic shift sequence intervals in the frequency domain.

In one exemplary embodiment of the present disclosure, the target threshold is determined based on the number of PUCCH resources or the target threshold is determined based on the number of PUCCH resources and the number of UEs to be scheduled.

In one exemplary embodiment of the present disclosure, the grouping module 620 may also be configured to:

In an exemplary embodiment of the present disclosure, the uplink signal quality information includes signal strength information, and the grouping module 620 may include: the device comprises a sequencing module, a first dividing module, a second dividing module and a third dividing module. The sequencing module can be used for sequencing the UE to be scheduled based on the signal strength information; the first dividing module may be configured to divide UEs to be scheduled, whose signal strength information is greater than a first threshold, into a first group; the second dividing module may be configured to divide UEs to be scheduled, for which signal strength information is smaller than a second threshold, into a second group; a third dividing module, configured to group the primary remaining UEs based on the scheduling priority; the remaining UEs at a time are UEs to be scheduled that are not divided into the first group and the second group.

In one exemplary embodiment of the present disclosure, the third division module may include: the device comprises a first selection module, a first comparison module, a second selection module and a second comparison module, wherein: the first selecting module may be configured to select one UE from the remaining UEs at a time as a first reference based on the scheduling priority. The first comparison module may be configured to determine UEs classified in the third group based on a comparison result of the first signal strength difference value and the third threshold; the second selecting module can be used for selecting one UE from the secondary rest UE as a second reference based on the scheduling priority; the secondary remaining UE is UE which is not divided into a third group in the primary remaining UE; and a second comparing module, configured to determine UEs classified in the fourth group based on a comparison result of the second signal strength difference value and the fourth threshold. Repeating the steps until each UE to be scheduled is grouped. The first signal strength difference is a difference between the signal strength of each UE in the primary remaining UE and the signal strength of the first reference, and the second signal strength difference is a difference between the signal strength of each UE in the secondary remaining UE and the signal strength of the second reference.

In one exemplary embodiment of the present disclosure, the resource allocation module 630 includes:

The first allocation module may be configured to determine a target group based on signal strength information of the grouping result, and allocate PUCCH resources to UEs of the target group.

A marking module may be configured to mark PUCCH resources adjacent to an index of a PUCCH resource of the target group as unavailable.

And the second allocation module can be used for carrying out PUCCH resource allocation on other groups except the target group.

the first multiplexing module can be used for multiplexing the PUCCH resources of the UE in the first group based on the basic isolation; wherein, the basic isolation is determined based on the upper limit requirement of the PUCCH demodulation performance.

And the second multiplexing module can be used for not multiplexing the PUCCH resources of the UE in the second group.

And a third allocation module, configured to allocate PUCCH resources to UEs in groups other than the first group and the second group based on the scheduling priority.

In an exemplary embodiment of the present disclosure, the apparatus 600 may further include:

the adjustment module may be configured to increase isolation between PUCCH resources of the UE to be scheduled when the number of UEs to be scheduled is less than a target threshold.

The specific details of each module or unit in the above PUCCH resource allocation device are described in detail in the corresponding PUCCH resource allocation method, so they are not described herein.

As another aspect, the present application also provides a computer-readable medium that may be contained in the electronic device described in the above embodiment; or may exist alone without being incorporated into the electronic device. The computer-readable medium carries one or more programs which, when executed by one of the electronic devices, cause the electronic device to implement the methods in the embodiments described below. For example, the electronic device may implement the respective steps shown in fig. 2 to 5, and the like.

It should be noted that the computer readable medium shown in the present disclosure may be a computer readable signal medium or a computer readable storage medium, or any combination of the two. The computer readable storage medium can be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples of the computer-readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the context of this disclosure, a computer-readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. In the present disclosure, however, the computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, with the computer-readable program code embodied therein. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination of the foregoing. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wire, fiber optic cable, RF, etc., or any suitable combination of the foregoing.

In addition, in an exemplary embodiment of the present disclosure, a network device capable of implementing the above method is also provided. Those skilled in the art will appreciate that the various aspects of the present disclosure may be implemented as a system, method, or program product. Accordingly, various aspects of the disclosure may be embodied in the following forms, namely: an entirely hardware embodiment, an entirely software embodiment (including firmware, micro-code, etc.) or an embodiment combining hardware and software aspects may be referred to herein as a "circuit," module "or" system.

A network device 700 according to such an embodiment of the present disclosure is described below with reference to fig. 7. The network device 700 shown in fig. 7 is merely an example, and should not be construed as limiting the functionality and scope of use of the disclosed embodiments.

As shown in fig. 7, the network device 700 is in the form of a general purpose computing device. The components of network device 700 may include, but are not limited to: the at least one processing unit 710, the at least one storage unit 720, a bus 730 connecting the different system components (including the storage unit 720 and the processing unit 710), and a display unit 740.

Wherein the storage unit stores program code that is executable by the processing unit 710 such that the processing unit 710 performs steps according to various exemplary embodiments of the present disclosure described in the above-described "exemplary methods" section of the present specification.

The memory unit 720 may include readable media in the form of volatile memory units, such as Random Access Memory (RAM) 7201 and/or cache memory 7202, and may further include Read Only Memory (ROM) 7203.

The storage unit 720 may also include a program/utility 7204 having a set (at least one) of program modules 7205, such program modules 7205 including, but not limited to: an operating system, one or more application programs, other program modules, and program data, each or some combination of which may include an implementation of a network environment.

Bus 730 may be a bus representing one or more of several types of bus structures including a memory unit bus or memory unit controller, a peripheral bus, an accelerated graphics port, a processing unit, or a local bus using any of a variety of bus architectures.

The network device 700 may also communicate with one or more external devices 800 (e.g., keyboard, pointing device, bluetooth device, etc.), one or more devices that enable a user to interact with the electronic device 700, and/or any device (e.g., router, modem, etc.) that enables the network device 700 to communicate with one or more other computing devices. Such communication may occur through an input/output (I/O) interface 750. Also, network device 700 may communicate with one or more networks such as a Local Area Network (LAN), a Wide Area Network (WAN) and/or a public network, such as the Internet, through network adapter 760. As shown, network adapter 760 communicates with other modules of network device 700 via bus 730. It should be appreciated that although not shown, other hardware and/or software modules may be used in connection with network device 700, including, but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RA identification systems, tape drives, data backup storage systems, and the like.

From the above description of embodiments, those skilled in the art will readily appreciate that the example embodiments described herein may be implemented in software, or in combination with the necessary hardware. Thus, the technical solution according to the embodiments of the present disclosure may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (may be a CD-ROM, a U-disk, a mobile hard disk, etc.) or on a network, and includes several instructions to cause a computing device (may be a personal computer, a server, a terminal device, or a network device, etc.) to perform the method according to the embodiments of the present disclosure.

Furthermore, the above-described figures are only schematic illustrations of processes included in the method according to the exemplary embodiments of the present disclosure, and are not intended to be limiting. It will be readily appreciated that the processes shown in the above figures do not indicate or limit the temporal order of these processes. In addition, it is also readily understood that these processes may be performed synchronously or asynchronously, for example, among a plurality of modules.

It should be noted that although the steps of the methods of the present disclosure are illustrated in the accompanying drawings in a particular order, this does not require or imply that the steps must be performed in that particular order or that all of the illustrated steps be performed in order to achieve desirable results. Additionally or alternatively, certain steps may be omitted, multiple steps combined into one step to perform, and/or one step decomposed into multiple steps to perform, etc., all are considered part of the present disclosure.

It should be understood that the present disclosure disclosed and defined herein extends to all alternative combinations of two or more of the individual features mentioned or evident from the text and/or drawings. All of these different combinations constitute various alternative aspects of the present disclosure. Embodiments of the present disclosure describe the best mode known for carrying out the disclosure and will enable one skilled in the art to utilize the disclosure.

Claims

1. A PUCCH resource allocation method, applied to multiuser multiplexing of PUCCH resources in a 5G communication system, the method comprising:

acquiring User Equipment (UE) information to be scheduled and uplink signal quality information of the UE; the UE information to be scheduled comprises the quantity information of the UE to be scheduled; the UE to be scheduled is a plurality of UEs multiplexing PUCCH resources;

grouping the UE to be scheduled based on the uplink signal quality information under the condition that the quantity information of the UE to be scheduled is larger than a target threshold value, so as to obtain a grouping result; the uplink signal quality of the UE to be scheduled in the same group in the grouping result is similar;

determining a target group based on signal intensity information of a grouping result, and carrying out PUCCH resource allocation on UE of the target group;

Marking PUCCH resources adjacent to the index of the PUCCH resource of the target group as unavailable;

for other groups except the target group, determining the sequence of resource allocation among the groups according to the UE signal intensity information, and carrying out resource allocation in the groups according to the scheduling priority;

wherein, the first resource isolation between different groups is greater than the second resource isolation in the same group; the isolation is an orthogonal spreading code in the time domain and/or a cyclic shift sequence interval in the frequency domain.

2. The PUCCH resource allocation method according to claim 1, wherein the target threshold is determined based on the number of PUCCH resources or the target threshold is determined based on the number of PUCCH resources and the number of UEs to be scheduled.

3. The PUCCH resource allocation method according to claim 1, wherein grouping UEs to be scheduled based on the uplink signal quality information comprises:

4. The PUCCH resource allocation method according to claim 1, wherein the uplink signal quality information includes signal strength information, and the grouping UEs to be scheduled based on the uplink signal quality information includes:

Ordering the UE to be scheduled based on the signal strength information;

dividing the UE to be scheduled, of which the signal strength information is greater than a first threshold, into a first group;

dividing the UE to be scheduled, of which the signal strength information is smaller than a second threshold, into a second group;

grouping the primary rest UE based on the scheduling priority; the primary remaining UEs are UEs to be scheduled which are not divided into the first group and the second group.

5. The PUCCH resource allocation method according to claim 4, wherein grouping the remaining UEs at one time based on the scheduling priority comprises:

selecting one UE from the primary rest UEs as a first reference based on the scheduling priority;

determining UEs classified in a third group based on a comparison of the first signal strength difference with a third threshold;

selecting one UE from the secondary rest UEs as a second reference based on the scheduling priority; the secondary remaining UE is UE which is not divided into a third group in the primary remaining UE;

determining UEs classified in a fourth group based on a comparison of the second signal strength difference with a fourth threshold;

repeating the steps until each UE to be scheduled is grouped;

the first signal strength difference is a difference between the signal strength of each UE in the primary remaining UEs and the signal strength of the first reference, and the second signal strength difference is a difference between the signal strength of each UE in the secondary remaining UEs and the signal strength of the second reference.

6. The PUCCH resource allocation method according to claim 5, wherein PUCCH resource allocation is performed for each group of UEs to be scheduled, comprising:

multiplexing PUCCH resources of the UE in the first group based on the basic isolation; the basic isolation is determined based on the upper limit requirement of the PUCCH demodulation performance;

multiplexing the PUCCH resources of the UE in the second group;

and carrying out PUCCH resource allocation on the UE in the other groups except the first group and the second group based on the scheduling priority.

7. The PUCCH resource allocation method according to any of claims 1-6, characterized in that the method further comprises:

and when the number of the UE to be scheduled is smaller than or equal to the target threshold value, increasing the isolation degree between PUCCH resources of the UE to be scheduled.

8. A PUCCH resource allocation device, applied to multiuser multiplexing of PUCCH resources in a 5G communication system, the device comprising:

the acquisition module is used for acquiring UE information of a user terminal to be scheduled and uplink signal quality information of the UE; the UE information to be scheduled comprises the quantity information of the UE to be scheduled; the UE to be scheduled is a plurality of UEs multiplexing PUCCH resources;

the grouping module is used for grouping the UE to be scheduled based on the uplink signal quality information under the condition that the quantity information of the UE to be scheduled is larger than a target threshold value so as to obtain a grouping result; the uplink signal quality of the UE to be scheduled in the same group in the grouping result is similar;

The resource allocation module is used for determining a target group based on the signal intensity information of the grouping result and carrying out PUCCH resource allocation on the UE of the target group; marking PUCCH resources adjacent to the index of the PUCCH resource of the target group as unavailable; for other groups except the target group, determining the sequence of resource allocation among the groups according to the UE signal intensity information, and carrying out resource allocation in the groups according to the scheduling priority;

wherein, the first resource isolation between different groups is greater than the second resource isolation in the same group; the isolation is orthogonal spreading codes in the time domain and/or cyclic shift sequence intervals in the frequency domain.

9. A computer readable medium, on which a computer program is stored, characterized in that the program, when being executed by a processor, implements the method according to any of claims 1-7.