CN113225777A - Resource pre-allocation method for reducing air interface time delay - Google Patents
Resource pre-allocation method for reducing air interface time delay Download PDFInfo
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Abstract
The invention discloses a resource pre-allocation method for reducing air interface time delay, which comprises a terminal, a base station and a resource pre-allocation module, wherein the resource pre-allocation module classifies and identifies the terminal according to the service characteristics of the terminal reported by the base station; and finally, pre-allocating the wireless resources according to the beam number of the terminal grouping and a priority strategy of QoS level combination, so that the wireless resources are utilized to the maximum extent. The resource pre-allocation method for reducing the air interface time delay fully utilizes the 5G MIMO wave beams and the service characteristics of the mMTC terminal to carry out grouping, and carries out wireless resource pre-allocation through the priority strategy, so that the wireless resources are more effectively utilized, the investment of operators can be reduced, more base stations do not need to be deployed, and the wireless resources are utilized to the maximum extent.
Description
Technical Field
The invention relates to the technical field of resource management, in particular to a resource pre-allocation method for reducing air interface time delay.
Background
The three application scenarios of 5G include eMBB, URLLC, and mtc, where mtc is an application scenario of internet of everything, and mainly focuses on performance indexes such as wide connection, low time delay, small packet data transmission, reliability, and wide coverage. Meanwhile, compared with LTE, 5G introduces a new inactive state in the RRC state, where the base station retains the context information of the terminal and the user plane bearer towards the core network is maintained.
For packet data transmission, according to Release 16 and the previous standard protocol, signaling connection needs to be established first, and user plane data can be sent after the idle state or inactive state is transferred to the connected state.
As shown in fig. 1: the signaling connection establishment of the signaling plane in the figure takes at least tens of milliseconds, so for the mtc application with more sensitive delay, it is very critical to reduce the delay of the signaling establishment as much as possible.
In order to reduce the packet data transmission delay of the mtc user, the 3GPP standard discussion Release 17 will perform research on the transmission of infrequent packets in an inactive state, for example, a typical application scenario includes the irregular reporting of information of a wireless sensor.
In Release 17, the standard introduces the study of the optimization of the mtc packet delay in inactive state, and the industry proposes the following two methods:
1. user data is carried in the signaling: carrying packet data in Msg3/MsgA in a random access process (including four-step random access and two-step random access) to reduce delay, wherein the delay reduction can exceed 50%; fig. 2 is a packet data transmission flow of four-step random access.
2. Transmitting user data on the user plane: reducing time delay by pre-allocating resources to an inactive mMTC terminal, wherein the time delay is reduced by more than 90%; fig. 3 is a small packet data transmission flow of resource pre-allocation.
Although the existing TDoc discussion draft of 3gpp real 17 refers to the way of pre-allocating resources in an inactive state to reduce the packet data transmission delay, a specific method for pre-allocating resources to an mtc terminal is not described, and the related problems are as follows:
1. the current standard only gives that user data can be transmitted in the user plane, and is realized by a radio resource pre-allocation mode, but no specific radio resource pre-allocation scheme is given.
2. More importantly, due to the invaluability of radio resources, a general operator sets the number of radio resources that can be used for pre-allocation in a cell, namely a threshold parameter, and because too many pre-allocated radio resources are available, other users have a great influence on access and service experience, so that the overall performance of the cell is influenced; since the pre-allocated radio resources may not be really used by the terminal sometimes, the waste of the radio resources of the cell is also caused;
3. since the number of mtc terminals connected in a cell may be large, the pre-allocation strategy of resources needs to be considered: the method and the device can ensure the service requirements and service performance of the mMTC terminal as much as possible and also ensure the service requirements of other non-mMTC users.
Considering that the current 5G basically uses the massive MIMO technology to form a multi-beam coverage cell, at this time, each beam can multiplex the same frequency domain resource, and the resource utilization efficiency of the cell can be greatly improved. Therefore, based on the scene of multi-beam coverage, the invention provides a resource pre-allocation method which can efficiently utilize pre-allocatable wireless resources on the basis of reducing air interface time delay.
Disclosure of Invention
The present invention aims to provide a resource pre-allocation method capable of efficiently utilizing radio resources while reducing air interface delay, so as to solve the problems proposed in the background art.
In order to achieve the purpose, the invention provides the following technical scheme:
a resource pre-allocation method for reducing air interface time delay comprises a terminal, a base station and a resource pre-allocation module, and the specific method comprises the following steps:
s1: the resource pre-allocation module classifies and identifies the terminal in each beam according to the service characteristics of the terminal reported by the base station, wherein the service characteristics comprise the QoS level of the service, the time interval of each service request, the size information of each service data packet, and the cell static beam or SSB beam or CSI-RS/SRS beam information and MCS scheme to which the terminal belongs, which are reported by the base station;
s2: the resource pre-allocation module groups the terminals according to the classification identifiers and the beam IDs of the terminals and calculates the number of beams grouped by each terminal;
s3: and pre-allocating the wireless resources according to the priority strategy of the combination of the number of the beams grouped by the terminal and the QoS level, so as to realize the maximum utilization of the wireless resources.
Further, the terminal is a 5G mMTC terminal; the base station is a 5G base station; the resource pre-allocation module can be an existing wireless resource allocation module of the base station, or a logic function module added in the base station and built in the base station.
Further, the specific method in S1 is: a resource pre-allocation module in the base station classifies mMTC terminals according to the service characteristics and the Modulation Coding Scheme (MCS) of the mMTC terminals of each cell, wherein the specific classification is that the mMTC terminals with the same number of distributed radio Resource Blocks (RB) can be classified into the same class according to the service characteristics and the MCS on the basis of the same service quality (QoS) level; when the base station supports massive MIMO and the cell has multiple static beams, the classified terminals also need to add beam ID information, which represents different static beams of the cell.
Further, the specific method in S2 is: the resource pre-allocation module groups the mMTC terminals according to the beam IDs and the terminal classifications, namely different beam IDs and the same terminal classifications are divided into one group, and the number of beams in each group is calculated at the same time, wherein the beam number calculation method is to accumulate the number of different beam IDs in the group and to count the number of terminals of the same terminal classification in a single beam; and if the terminal classification only belongs to one beam ID, the terminal classification is also divided into one group, and similarly, for a cell without a beam, the same terminal classification is also divided into one group, and finally, a cell-level mMTC terminal group is generated.
Further, the specific method in S3 includes: a QoS-first radio resource pre-allocation scheme; a wireless resource pre-allocation scheme with priority after the QoS level and the number of the wave beams are weighted; and a wireless resource pre-allocation scheme with a prior beam number.
Further, the resource pre-allocation policy in the QoS-prioritized radio resource pre-allocation scheme is to pre-allocate, in the configured pre-allocable resources, resources of an mtc terminal group with a high QoS level in advance, specifically: the mMTC terminals needing pre-allocation resources in a cell are grouped and sorted according to the QoS priority, and when the number of terminals of a certain beam in the group is greater than 1, the pre-allocated wireless resources are allocated according to the wireless resources needed by the maximum number of the terminals; the resource pre-allocation module pre-allocates the wireless resources according to the QoS priority level, and stops pre-allocation until the pre-allocation resource threshold is reached.
Furthermore, the priority wireless resource pre-allocation scheme after weighting the QoS level and the number of the beams is to calculate the resource pre-allocation of mMTC terminal groups of the priority after respectively multiplying the QoS level and the number of the beams by different weighting coefficients in the configured pre-allocable resources; the specific scheme is as follows: multiplying the QoS level of mMTC terminals needing pre-allocation of resources in a cell by a weighting coefficient W1, and multiplying the number of beams by a weighting coefficient W2, then calculating the priority and sequencing each group according to the calculated priority; because the number of terminals of a certain beam possibly exists in each group is more than 1, for the situation, the number of terminals in each beam in each group is-1 after each weighted priority calculation, and then the weighted priority is calculated according to the above method until the number of terminals of all beams becomes 0; and finally, the resource pre-allocation module pre-allocates the wireless resources according to the calculated weighted priority level, and stops pre-allocation until the pre-allocation resource threshold is reached.
Furthermore, the radio resource pre-allocation scheme with the prior beam number is to pre-allocate the resource of the mMTC terminal group with a large beam number in the pre-allocated resources; the specific scheme is as follows: and sorting mMTC terminal groups needing pre-allocation of resources in a cell from large to small according to the number of beams, wherein the number of terminals of a certain beam possibly existing in each group is larger than 1, for the condition, the number of terminals in each beam in the group is minus 1 after the priority of the number of beams every time, then calculating the priority of the number of beams until the number of terminals of all beams is 0, finally, a resource pre-allocation module pre-allocates wireless resources according to the priority of the number of beams until the pre-allocation of resources is stopped when the threshold of the pre-allocation of resources is reached, and if the number of beams is equal, judging the priority according to the level of QoS.
Compared with the prior art, the invention has the beneficial effects that:
the resource pre-allocation method for reducing the air interface time delay fully utilizes the 5G MIMO wave beams and the service characteristics of the mMTC terminal to carry out grouping, and carries out wireless resource pre-allocation through the priority strategy, so that the wireless resources are more effectively utilized, the investment of operators can be reduced, more base stations do not need to be deployed, and the wireless resources are utilized to the maximum extent.
Drawings
Fig. 1 is a conventional signaling interaction flow diagram for data transmission;
fig. 2 is a flow chart of packet data transmission in a conventional random access process;
FIG. 3 is a flow chart of packet data transmission for conventional pre-allocation of resources;
FIG. 4 is a diagram of a network architecture of the present invention;
fig. 5 is a schematic diagram of isolation of 4 static beams in a cell according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the embodiment of the invention: the resource pre-allocation method for reducing air interface time delay comprises a terminal, a base station and a resource pre-allocation module, wherein the terminal is a 5G mMTC terminal; the base station is a 5G base station; the resource pre-allocation module can be an existing wireless resource allocation module of the base station or a logic function module additionally arranged in the base station and is built in the base station; the resource pre-allocation module has the main functions that according to the terminal service characteristics reported by the base station, including information such as the QoS level of a service, the service request time interval of each time, the service data packet size of each time, the cell static beam information and the MCS scheme of the terminal reported by the base station, the terminal is classified and identified in each beam according to the service characteristics, the QoS level and the MCS scheme, then the terminal is grouped according to the terminal classification identification and the beam ID, the number of beams after the terminal is grouped is calculated, and finally the pre-allocation of wireless resources is carried out according to the priority strategy of the combination of the number of beams grouped by the terminal and the QoS level, so that the wireless resources are utilized to the maximum extent; the specific distribution method is as follows:
the first step is as follows: the resource pre-allocation module classifies and identifies the terminal in each beam according to the service characteristics of the terminal reported by the base station, wherein the service characteristics comprise the QoS level of the service, the time interval of each service request, the size information of each service data packet, and the cell static beam or SSB beam or CSI-RS/SRS beam information and MCS scheme to which the terminal belongs, which are reported by the base station;
in the above steps, a resource pre-allocation module in the base station classifies the mtc terminals according to the service characteristics of the mtc terminals in each cell and the modulation coding MCS scheme, and the specific classification is that the mtc terminals with the same number of radio resource blocks RB calculated and allocated according to the service characteristics and the MCS on the basis of the same service QoS level can be classified into the same class; when the base station supports massive MIMO and the cell has a plurality of static beams, the classified terminals need to add beam ID information, and the beam ID represents different static beams of the cell;
the second step is that: the resource pre-allocation module groups the terminals according to the classification identifiers and the beam IDs of the terminals and calculates the number of beams after the terminals are grouped;
in the above steps, the resource pre-allocation module groups mtc terminals according to the beam ID and terminal classification, that is, different beam IDs and the same terminal classification are divided into one group, and the number of beams in each group is calculated at the same time, where the number of beams in a group is calculated by accumulating the number of different beam IDs, and the number of terminals in the same terminal classification in a single beam needs to be counted at the same time; if the terminal classification only belongs to one beam ID, the terminal classification is also divided into one group, and similarly, for a cell without beams, the same terminal classification is also divided into one group, and finally, a cell-level mMTC terminal group is generated;
the third step: and pre-allocating the wireless resources according to the priority strategy of the combination of the number of the beams grouped by the terminal and the QoS level, so as to realize the maximum utilization of the wireless resources.
In order to ensure the high efficiency of the method for pre-allocating wireless resources, when a cell has a plurality of beams, and when resources are pre-allocated, a certain isolation degree can be set between the beams in each group during grouping, for example, the isolation degree of the beams is 2, that is, the beams id which are not adjacent to each other between the beams are required to be grouped into one group, such an effect is that the number of the groups is increased, but the resources between the groups can be ensured not to be mutually affected, and mutual interference between the beams is prevented; after the resource pre-allocation module completes the grouping of the mMTC terminals, the wireless resources of the cell can be pre-allocated according to the priority strategy of the following service QoS level and the number of the beams, so that the wireless resources are more effectively utilized.
The priority policy scheme is as follows:
1. QoS priority radio resource pre-allocation scheme: the resource pre-allocation strategy is to pre-allocate the resources of the mMTC terminal group with high QoS level in the pre-allocated resources preferentially, and specifically comprises the following steps: the mMTC terminals needing pre-allocation resources in a cell are grouped and sorted according to the QoS priority, and when the number of terminals of a certain beam in the group is greater than 1, the pre-allocated wireless resources are allocated according to the wireless resources needed by the maximum number of the terminals; the resource pre-allocation module pre-allocates wireless resources according to the QoS priority level, and stops pre-allocation until the pre-allocation resource threshold is reached;
2. the priority wireless resource pre-allocation scheme after the QoS level and the beam number are weighted: in the configured pre-allocated resources, respectively multiplying the QoS level and the number of beams by different weighting coefficients, and then calculating the resource pre-allocation of the mMTC terminal group with the priority; the specific scheme is as follows: multiplying the QoS level of mMTC terminals needing pre-allocation of resources in a cell by a weighting coefficient W1, and multiplying the number of beams by a weighting coefficient W2, then calculating the priority and sequencing each group according to the calculated priority; because the number of terminals of a certain beam possibly exists in each group is more than 1, for the situation, the number of terminals in each beam in each group is-1 after each weighted priority calculation, and then the weighted priority is calculated according to the above method until the number of terminals of all beams becomes 0; finally, the resource pre-allocation module pre-allocates the wireless resources according to the calculated weighted priority level, and stops pre-allocation until the pre-allocation resource threshold;
3. the wireless resource pre-allocation scheme with the prior beam number comprises the following steps: in the configured pre-allocated resources, preferentially pre-allocating resources of the mMTC terminal group with a large number of beams; the specific scheme is as follows: and sorting mMTC terminal groups needing pre-allocation of resources in a cell from large to small according to the number of beams, because the number of terminals of a certain beam possibly exists in each group is larger than 1, for the condition, the number of terminals in each beam in the group is minus 1 after the priority of the number of beams every time, then calculating the priority of the number of beams until the number of terminals of all beams is 0, finally, a resource pre-allocation module pre-allocates wireless resources according to the priority of the number of beams until the pre-allocation of resources is stopped when the threshold of the pre-allocation of resources is reached, and if the number of beams is equal, judging the priority according to the QoS.
To further explain the above invention, the following specific example is also provided:
in this embodiment, for a 5G mtc service scenario with a high requirement on packet data transmission delay, the base station has determined that resource pre-allocation needs to be performed for an mtc terminal in an inactive state according to service characteristics of the terminal.
As introduced in the background, since the pre-allocated radio resources are limited, the resources need to be pre-allocated according to a more efficient method, so as to satisfy the requirement of pre-allocating the resources by as many 5G mtc terminals as possible.
The network structure diagram of this embodiment is shown in fig. 4, that is, a resource pre-allocation module with a logic function is provided in the base station: the resource pre-allocation module is used for pre-allocating wireless resources to the 5G mMTC terminal in the inactive state.
In order to ensure the effectiveness of the pre-allocation of the wireless resources, the size of the pre-allocated wireless resources is an important dimension, therefore, a resource pre-allocation module firstly classifies the terminals according to the service characteristics and Modulation Coding Schemes (MCS) of the mMTC terminals of each cell, wherein the service characteristics comprise the QoS level of the service, the service request time interval, the data packet size of each service and the like; the specific classification is that the terminals with the same service QoS level and the same resource block RB to be allocated, which are calculated according to the service characteristics and the MCS scheme, can be classified into the same class; for example, three mtc terminals A, B, C determine that all radio resources need to be pre-allocated according to the service characteristics, assuming that the service characteristics of terminal a is QoS level 2, the service request time interval is 10 seconds, 20 bytes per packet size of service, MCS is a modulation scheme of 16QAM, the service characteristics of terminal B is QoS level 2, the service request time interval is 10 seconds, 10 bytes per packet size of service, MCS is a modulation scheme of QPSK, the service characteristics of terminal C is QoS level 2, the service request time interval is 10 seconds, 30 bytes per packet size of service, MCS is a modulation scheme of 64 QAM; since the QoS levels of A, B, C are all 2, it can be known that there is the same service request time interval according to the service characteristics, and although the MCS schemes are different, the number of radio resources RB required after the packet size of the service characteristics and the MCS scheme are calculated is all 1, then A, B, C three mtc terminals can be classified as the same kind of mtc terminals.
When a base station supports massive MIMO and a cell has a plurality of static beams, such as SSB beams or CSI-RS beams, beam ID information needs to be added to classified terminals, the beam ID represents different static beams of the cell, then the mMTC terminals are grouped according to the beam ID and the terminal classification, namely different beam IDs and the same terminal classification are divided into one group, the number of beams in each group is calculated by the number of different beam IDs in the group, and the number of terminals in the same terminal classification in a single beam needs to be counted; if the terminal classification only belongs to one beam ID, the terminal classification is also divided into one group, and similarly, for a cell without a plurality of static beams, the same terminal classification is also divided into one group; grouping all mMTC terminals needing pre-allocation of wireless resources in a cell, and finally generating different mMTC terminal groups of a cell level.
For example, assume that there are 10 mtc terminals that require pre-allocation of resources, and they have been classified into the same class of mtc terminals according to the above classification method, which are a (1), B (2), C (3), D (4), E (1), F (1), G (2), H (2), J (3), and K (4), respectively, where the numbers in the brackets indicate beam IDs; according to the grouping method described above, they are grouped into the same group, which has 4 beams, A, E, F three terminals having a beam ID of 1, B, G, H three terminals having a beam ID of 2, C, J two terminals having a beam ID of 3, and D, K two terminals having a beam ID of 4.
In order to ensure the high efficiency of the method for pre-allocating radio resources, when a cell has a plurality of beams, during resource pre-allocation, a certain isolation degree may be set between the beams in each group during grouping, for example, the isolation degree of the beams is 2, that is, the beams id that are not adjacent to each other between the beams are required to be grouped, such an effect is that the number of the groups is increased, but the resources between the groups are ensured not to be mutually affected, so as to prevent mutual interference between the beams.
For example, the 10 mtc terminals exemplified above, assuming that the beam isolation is 2, that is, according to the four beams shown in fig. 5, beam 1 and beam 3 satisfy the isolation requirement, beam 2 and beam 4 satisfy the isolation requirement, the mtc terminals according to beam 1 and beam 3 can be divided into one group, the mtc terminals according to beam 2 and beam 4 are divided into another group, that is, A, E, F of beam 1 and C, J of beam 3 are divided into one group, B, G, H of beam 2 and D, K of beam 4 are divided into one group, and two groups of resources are staggered in the frequency domain when resources are pre-allocated.
After the resource pre-allocation module completes the grouping of the mMTC terminals, the wireless resources can be pre-allocated for the cells according to the priority strategies of the following service QoS levels and the number of the beams, so that the wireless resources are more effectively utilized.
Priority policy 1: QoS priority radio resource pre-allocation scheme:
the resource pre-allocation strategy is to pre-allocate the resources of the mMTC terminal group with high QoS level in the pre-allocated resources.
The specific scheme is as follows: the mMTC terminals needing pre-allocation of wireless resources in the cell are grouped and sorted according to the QoS priority, and when the number of the terminals in the cell or a certain beam in the group is greater than 1, the pre-allocated wireless resources are allocated according to the wireless resources needed by the maximum number of the terminals; the resource pre-allocation module pre-allocates the wireless resources according to the QoS priority level, and stops pre-allocation until the pre-allocatable resources are completely allocated.
Assuming that the radio resources which can be pre-allocated are 4 RBs, and each grouped terminal needs 1 RB pre-allocated resource;
assuming that the 10 mtc terminals exemplified above belong to the highest QoS priority, since the beam IDs with the largest number of terminals being 3 are 1 and 2, the pre-allocated resources select beam 1 for allocation, and 3 RBs need to be allocated in total, wherein the 1 st RB and the 2 nd RB resources are both four beams and the 3 rd RB resource is beam 1 and beam 2; if each mMTC terminal is pre-allocated with one RB according to the traditional method, the RB can be allocated to 4 terminals, and according to the allocation method of the embodiment, the remaining 1 RB can be used for other terminals with QoS priority, so that the utilization rate of the pre-allocatable wireless resources is greatly improved.
Since there are 1 RB remaining, it is sufficient to pre-allocate radio resources for the packets of the secondary QoS priority in the same manner until the allocation of all the pre-allocatable radio resources is completed.
Priority policy 2: the priority wireless resource pre-allocation scheme after the QoS level and the beam number are weighted:
the resource pre-allocation strategy is to calculate the resource pre-allocation of the mMTC terminal group with the priority after respectively multiplying the QoS level and the beam number by different weighting coefficients in the configured pre-allocatable resources.
The specific scheme is as follows: multiplying the QoS level of mMTC terminals needing pre-allocation of resources in a cell by a weighting coefficient W1, and multiplying the number of beams by a weighting coefficient W2, then calculating the priority and sequencing each group according to the calculated priority; because the number of terminals of a certain beam possibly exists in each group is more than 1, for the situation, the number of terminals in each beam in each group is-1 after each weighted priority calculation, and then the weighted priority is calculated according to the above method until the number of terminals of all beams becomes 0; and finally, the resource pre-allocation module pre-allocates the wireless resources according to the calculated weighted priority level until the pre-allocated resources are completely allocated.
The calculation weighted priorities for different QoS levels are only QoS level differences, and therefore, the calculation process is not illustrated, but only performed for the different numbers of terminals in different beams in the same group; assuming that the example is also the above 10 mtc terminals, assuming that the QoS level is 15, the weighting factor of the QoS level is W1, and the weighting factor of the number of beams is W2, since the number of terminals in beam 1 and beam 2 is 3, and the number of terminals in beam 3 and beam 4 is 2, the calculation procedure is:
because four beams have terminals in the first weighting calculation, the priority calculation is as follows: 15W 1+ 4W 2;
in the second weighting calculation, since the number of terminals in the four beams is decreased by one, the number of terminals in the beams 1 and 2 becomes 2, the number of terminals in the beams 3 and 4 becomes 1, and there are terminals in all of the four beams, then the priority calculation is performed: 15W 1+ 4W 2;
in the third weighting calculation, since the number of terminals in the four beams is decreased by one, the number of terminals in the beams 1 and 2 becomes 1, and the number of terminals in the beams 3 and 4 becomes 0, only two beams have terminals, and then the priority is calculated: 15W 1+ 2W 2;
in the fourth weighting calculation, because the number of terminals in the beam 1 and the beam 2 is reduced by one, and the number of terminals in the beam 1 and the beam 2 becomes 0, the priority calculation is stopped;
one point is explained: the three weighting calculations above result in three priorities, all of which are used for weighted prioritization.
Priority policy 3: the wireless resource pre-allocation scheme with the prior beam number comprises the following steps:
the resource pre-allocation strategy is to pre-allocate the resources of the mMTC terminal group with a large number of beams in the pre-allocated resources.
The specific scheme is as follows: sorting mMTC terminal groups needing pre-allocation of resources in a cell from large to small according to the number of beams, wherein the number of terminals of a certain beam possibly existing in each group is larger than 1, and for the situation, calculating the number of the terminals-1 in each beam in each group after calculating the number of the beams each time, and then calculating the number of the beams according to the method until the number of the terminals of all the beams is 0; finally, the resource pre-allocation module pre-allocates the wireless resources according to the priority strategy of the number of the beams until the pre-allocated resources are completely allocated; if the number of the beams is equal, the priority is judged according to the QoS level.
Assuming that the above example is also taken by 10 mtc terminals, since the number of terminals in beam 1 and beam 2 is 3, and the number of terminals in beam 3 and beam 4 is 2, the process of calculating the number of beams is as follows:
when the number of the beams is calculated for the first time, the four beams all have terminals, and the number of the beams is 4;
when the number of the second beams is calculated, because the number of the terminals in the four beams is reduced by one, the number of the terminals in the beams 1 and 2 is changed into 2, the number of the terminals in the beams 3 and 4 is changed into 1, and then the number of the beams is 4 if all the four beams have terminals;
when the number of beams is calculated for the third time, because the number of terminals in the four beams is reduced by one, the number of terminals in the beam 1 and the beam 2 is changed to 1, the number of terminals in the beam 3 and the beam 4 is changed to 0, only two beams still have terminals, and the number of beams is 2;
when the number of the beams is calculated for the fourth time, because the number of the terminals in the beam 1 and the beam 2 is reduced by one, at this time, the number of the terminals in the beam 1 and the beam 2 becomes 0, and the calculation of the number of the beams is stopped;
thus, three beam numbers corresponding to the QoS level of the packet are obtained, and all the three beam numbers participate in beam number sequencing and are used for pre-allocation of wireless resources with the beam numbers being prior.
The calculation method is the same for terminal groups of different QoS levels, and is not described again.
In summary, the following steps: the resource pre-allocation method for reducing the air interface delay provided by the invention fully utilizes the service characteristics of 5G MIMO wave beams and mMTC terminals to carry out grouping, and carries out wireless resource pre-allocation through a priority strategy, so that the wireless resources are more effectively utilized, the investment of operators can be reduced, more base stations are not required to be deployed, and the wireless resources are utilized to the maximum extent.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.
Claims (8)
1. A resource pre-allocation method for reducing air interface time delay is characterized by comprising a terminal, a base station and a resource pre-allocation module, and the specific method comprises the following steps:
s1: the resource pre-allocation module classifies and identifies the terminal in each beam according to the service characteristics of the terminal reported by the base station, wherein the service characteristics comprise the QoS level of the service, the time interval of each service request, the size information of each service data packet, and the cell static beam or SSB beam or CSI-RS/SRS beam information and MCS scheme to which the terminal belongs, which are reported by the base station;
s2: the resource pre-allocation module performs terminal grouping according to the classification identification and the beam ID of the terminal and calculates the number of beams grouped by each terminal;
s3: and pre-allocating the wireless resources according to the priority strategy of the combination of the number of the beams grouped by the terminal and the QoS level, so as to realize the maximum utilization of the wireless resources.
2. The resource pre-allocation method for reducing air interface delay according to claim 1, characterized in that: the terminal is a 5G mMTC terminal; the base station is a 5G base station; the resource pre-allocation module can be an existing wireless resource allocation module of the base station, or a newly added logic function module in the base station, which is built in the base station.
3. The resource pre-allocation method for reducing air interface delay according to claim 1, characterized in that: the specific method in S1 is as follows: a resource pre-allocation module in the base station classifies mMTC terminals according to the service characteristics and the Modulation Coding Scheme (MCS) of the mMTC terminals of each cell, wherein the specific classification is that the mMTC terminals with the same number of distributed radio Resource Blocks (RB) can be classified into the same class according to the service characteristics and the MCS on the basis of the same service quality (QoS) level; when the base station supports massive MIMO and the cell has multiple static beams, the classified terminals also need to add beam ID information, which represents different static beams of the cell.
4. The resource pre-allocation method for reducing air interface delay according to claim 1, characterized in that: the specific method in S2 is as follows: the resource pre-allocation module groups the mMTC terminals according to the beam IDs and the terminal classifications, namely different beam IDs and the same terminal classifications are divided into one group, and the number of beams in each group is calculated at the same time, wherein the beam number calculation method is to accumulate the number of different beam IDs in the group and to count the number of terminals of the same terminal classification in a single beam; and if the terminal classification only belongs to one beam ID, the terminal classification is also divided into one group, and similarly, for a cell without a beam, the same terminal classification is also divided into one group, and finally, a cell-level mMTC terminal group is generated.
5. The resource pre-allocation method for reducing air interface delay according to claim 1, characterized in that: the specific method in S3 comprises the following steps: a QoS-first radio resource pre-allocation scheme; a wireless resource pre-allocation scheme with priority after the QoS level and the number of the wave beams are weighted; and a wireless resource pre-allocation scheme with a prior beam number.
6. The resource pre-allocation method for reducing air interface delay according to claim 5, characterized in that: the resource pre-allocation strategy in the QoS-preferred radio resource pre-allocation scheme is to pre-allocate the resources of the mtc terminal group with a high QoS level in the pre-allocated resources, specifically: the mMTC terminals needing pre-allocation resources in a cell are grouped and sorted according to the QoS priority, and when the number of terminals of a certain beam in the group is greater than 1, the pre-allocated wireless resources are allocated according to the wireless resources needed by the maximum number of the terminals; the resource pre-allocation module pre-allocates the wireless resources according to the QoS priority level, and stops pre-allocation until the pre-allocation resource threshold is reached.
7. The resource pre-allocation method for reducing air interface delay according to claim 5, characterized in that: the wireless resource pre-allocation scheme with the priority after the QoS level and the beam number are weighted is that in the configured pre-allocable resources, the QoS level and the beam number are respectively multiplied by different weighting coefficients, and then the resource pre-allocation of the mMTC terminal group with the priority is calculated; the specific scheme is as follows: multiplying the QoS level of mMTC terminals needing pre-allocation of resources in a cell by a weighting coefficient W1, and multiplying the number of beams by a weighting coefficient W2, then calculating the priority and sequencing each group according to the calculated priority; because the number of terminals of a certain beam possibly exists in each group is more than 1, for the situation, the number of terminals in each beam in the group is-1 after the priority is weighted each time, and then the weighted priority is calculated according to the above method until the number of terminals of all beams becomes 0; and finally, the resource pre-allocation module pre-allocates the wireless resources according to the calculated weighted priority level, and stops pre-allocation until the pre-allocation resource threshold is reached.
8. The resource pre-allocation method for reducing air interface delay according to claim 5, characterized in that: the wireless resource pre-allocation scheme with the prior beam number is to pre-allocate the resources of the mMTC terminal group with a large beam number in the pre-allocated resources; the specific scheme is as follows: and sorting mMTC terminal groups needing pre-allocation of resources in a cell from large to small according to the number of beams, wherein the number of terminals of a certain beam possibly existing in each group is larger than 1, for the condition, the number-1 of terminals in each beam in the group is calculated after the priority of the number of beams is calculated each time, then the priority of the number of beams is calculated until the number of terminals of all beams is 0, finally, a resource pre-allocation module performs wireless resource pre-allocation according to the priority of the number of beams until the pre-allocation of resources is stopped when the threshold of the pre-allocation of resources is reached, and if the number of beams is equal, the priority is judged according to the level of QoS.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101998640A (en) * | 2009-08-14 | 2011-03-30 | 中兴通讯股份有限公司 | Resource allocation method and base station |
| CN102695211A (en) * | 2011-03-24 | 2012-09-26 | 中兴通讯股份有限公司 | Method and system for radio resource control |
| WO2017101458A1 (en) * | 2015-12-14 | 2017-06-22 | 中兴通讯股份有限公司 | Resource allocation realization method and system, and centralized controller and base station |
| WO2018059283A1 (en) * | 2016-09-28 | 2018-04-05 | 中兴通讯股份有限公司 | Wireless resource allocation method and device |
-
2021
- 2021-04-29 CN CN202110477104.1A patent/CN113225777B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101998640A (en) * | 2009-08-14 | 2011-03-30 | 中兴通讯股份有限公司 | Resource allocation method and base station |
| CN102695211A (en) * | 2011-03-24 | 2012-09-26 | 中兴通讯股份有限公司 | Method and system for radio resource control |
| WO2017101458A1 (en) * | 2015-12-14 | 2017-06-22 | 中兴通讯股份有限公司 | Resource allocation realization method and system, and centralized controller and base station |
| WO2018059283A1 (en) * | 2016-09-28 | 2018-04-05 | 中兴通讯股份有限公司 | Wireless resource allocation method and device |
Non-Patent Citations (2)
| Title |
|---|
| INTEL CORPORATION: "Standalone NR: supporting verticals and forward compatibility", 《3GPP TSG-RAN2 MEETING #93BIS R2-162706》 * |
| JEN-PO CHENG,ET AL: "Prioritized Random Access with dynamic access barring for RAN overload in 3GPP LTE-A networks", 《2011 IEEE GLOBECOM WORKSHOPS (GC WKSHPS)》 * |
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