WO2011050729A1 - 通信网络中的资源分配方法和装置 - Google Patents
通信网络中的资源分配方法和装置 Download PDFInfo
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- WO2011050729A1 WO2011050729A1 PCT/CN2010/078191 CN2010078191W WO2011050729A1 WO 2011050729 A1 WO2011050729 A1 WO 2011050729A1 CN 2010078191 W CN2010078191 W CN 2010078191W WO 2011050729 A1 WO2011050729 A1 WO 2011050729A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0044—Arrangements for allocating sub-channels of the transmission path allocation of payload
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0058—Allocation criteria
- H04L5/006—Quality of the received signal, e.g. BER, SNR, water filling
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
- H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
- H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0037—Inter-user or inter-terminal allocation
- H04L5/0039—Frequency-contiguous, i.e. with no allocation of frequencies for one user or terminal between the frequencies allocated to another
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0037—Inter-user or inter-terminal allocation
- H04L5/0041—Frequency-non-contiguous
Definitions
- the present invention relates to the field of communications, and in particular, to a resource allocation method and apparatus in a communication network.
- the goal of the resource scheduling algorithm is to flexibly allocate the available resources in the communication network according to user requirements and channel characteristics under conditions of limited resources, thereby maximizing the wireless transmission utilization. Due to the introduction of carrier aggregation technology, traditional resource scheduling algorithms are no longer sufficient. The scheduling algorithm under carrier aggregation faces many challenges and is also the key to improving the overall performance of the system.
- a resource allocation method in a communication network may include: determining a carrier aggregation mode of the communication network; and selecting a resource allocation manner of the communication network according to a carrier aggregation manner of the communication network.
- a resource allocation device in a communication network may include: a convergence mode determining module, configured to determine a carrier aggregation mode of the communication network; and an allocation mode selection module, configured to select resources of the communication network according to a carrier aggregation mode of the communication network Allocation.
- embodiments of the present invention also provide a calculation sequence for implementing the above resource allocation method.
- embodiments of the present invention also provide a computing program product in the form of at least a computer readable medium having recorded thereon computer program code for implementing the resource allocation method described above.
- FIG. 1 is a schematic diagram showing a communication network supporting carrier aggregation
- FIG. 2 is a schematic flow chart showing a resource allocation method according to an embodiment of the present invention.
- FIG. 3 is a schematic flow chart showing a resource allocation method according to another embodiment of the present invention.
- FIG. 4 is a schematic flow chart showing a centralized resource allocation manner according to another embodiment of the present invention.
- FIG. 5 is a schematic flow chart showing a distributed resource allocation manner according to an embodiment of the present invention.
- FIG. 6 is a schematic flow chart showing a resource allocation method according to another embodiment of the present invention.
- FIG. 7 is a diagram showing an exemplary flow chart for selecting a set of users to be scheduled according to an embodiment of the present invention.
- FIG. 8 is a diagram showing an exemplary flow chart for selecting a user set to be scheduled and sorting users therein according to an embodiment of the present invention
- FIG. 9 is a schematic diagram showing a resource allocation device according to an embodiment of the present invention.
- FIG. 10 is a schematic block diagram showing a resource allocation device according to another embodiment of the present invention.
- FIG. 11 is a schematic block diagram showing a resource allocation device according to another embodiment of the present invention.
- FIG. 12 is a schematic block diagram showing a resource allocation device according to another embodiment of the present invention.
- Figure 13 is an exemplary block diagram showing the structure of a computer for implementing the present invention.
- LTE-A Long Term Evolution-Advanced
- LTE-A Long Term Evolution-Advanced
- LTE-A Long Term Evolution-Advanced
- LTE-A supports both aggregation methods.
- 3GPP also considers backward compatibility when introducing carrier aggregation technology, which means that terminals supporting carrier aggregation and carrier aggregation will coexist for a long time in a long period of time, and terminals supporting carrier aggregation can simultaneously access.
- a plurality of carrier units, which do not support carrier aggregation, can only access one carrier unit.
- a scheduling algorithm in accordance with some embodiments of the present invention takes this into account and makes good use of it. Improve system performance.
- the scheduling algorithm according to some embodiments of the present invention also considers the diversity of terminals (supporting or not supporting carrier aggregation and user performance differences for different carrier units) and the resulting scheduling fairness problem, while improving system performance. Full consideration of user fairness.
- how to utilize the frequency selective gain brought by the carrier aggregation technique and improve the multi-user diversity gain, thereby improving the overall performance of the system is also a problem considered by the resource allocation algorithm according to some embodiments of the present invention.
- FIG. 1 illustrates an exemplary communication network that supports carrier aggregation.
- a plurality of users 102, 103, and 104 are served by a base station (e.g., e-NodeB) 101 within a cell.
- These users may be carrier-aggregated (CA-NS), such as user 102; or may be carrier-aggregated (CA-S), such as users 103 and 104.
- CA-NS carrier-aggregated
- CA-S carrier-aggregated
- the carrier aggregation mode supported by the communication network is determined by the base station.
- the carrier units supported by the communication network include CC 1, CC2, and CC3.
- the carrier unit CC 1 and the carrier unit CC2 are continuous, and the carrier unit CC3 is discontinuous with the carrier units CC 1 and CC2.
- a “user terminal” such as a mobile device used by an individual user to access a communication network, such as a mobile phone (such as 102 and 103 of FIG. 1). ), personal digital assistant or laptop, etc.
- the resource allocation (scheduling) method is to allocate resources (such as the resource block RB shown in FIG. 1) for each user that requests the service. Specifically, for a user who does not support carrier aggregation, it is determined that the user can support it. Resources that can be occupied in the carrier unit. For users supporting carrier aggregation, determine the carrier units that the user can occupy and the resources in the corresponding carrier unit. For example, in the example of FIG. 1, terminal 102 can only use resources on carrier unit CC1, while terminal 103 can support carrier units CC1 and CC3, and terminal 104 can support carrier units CC1, CC2, and CC3.
- FIG. 2 is a schematic flow chart showing a resource allocation method according to an embodiment of the present invention.
- the resource allocation method includes the following steps S201 and S203.
- step S201 the carrier aggregation mode of the communication network is first determined.
- the communication network described herein is a communication system that supports carrier aggregation, such as the communication network shown in FIG.
- the communication network may include nodes that support carrier aggregation (such as terminal 102 shown in FIG. 1), and may also include nodes that do not support carrier aggregation (terminals 103 and 104 as shown in FIG. 1).
- a carrier aggregation mode supported by the communication network may be determined by a primary node (eg, a base station) of the communication network, for example, may be from a primary node.
- the information about the carrier aggregation mode is obtained in the corresponding configuration file of the (base station), thereby determining the carrier aggregation mode supported by the communication network.
- step S203 the resource allocation mode of the trusted network is selected according to the determined carrier aggregation mode.
- This embodiment selects different resource allocation methods according to different scenarios of carrier aggregation, which can effectively improve the frequency diversity gain of the system.
- FIG. 3 shows an application example of the resource allocation method shown in FIG. 2.
- the carrier aggregation mode of the communication network generally includes continuous carrier aggregation (CC 1 and CC 2 as shown in FIG. 1 ) and discontinuous carrier aggregation (CC 1 and CC 3 as shown in FIG. 1 ). the way.
- different resource allocation methods are selected for the two different aggregation modes.
- a carrier aggregation mode of the communication network is determined.
- step S301-1 it is judged whether the determined carrier aggregation mode is continuous or discontinuous. If it is continuous, in step S303-1, a distributed resource allocation mode is selected for resource allocation. If it is discontinuous, in step S303-2, a centralized resource allocation mode is selected for allocating resources of the communication network.
- FIG. 4 shows an example of the centralized resource allocation method shown in Figure 3. As shown in FIG. 4, the centralized resource allocation may include the following steps S409 and S411.
- step S409 for each user in the set of users to be scheduled of the communication network, calculate performance indicators of the user on each of the assignable resource unit sets in the set of carrier units (for the purpose of description Convenient, referred to here as the first performance indicator).
- the so-called “Resource Block (abbreviated as RB)” can refer to the smallest transmission unit (time-frequency resource).
- the first performance indicator may be user traffic, channel gain, signal to noise ratio, frequency transmission efficiency or bit error rate, etc., as can be understood by those skilled in the art, and may be selected according to needs in a specific application. Not listed here.
- Calculating a first performance indicator of a user on a certain resource block of a carrier unit that is, calculating or estimating a performance index of the user on the resource block, such as traffic, channel gain, bit error rate, frequency transmission efficiency, or bit error rate. . It should be understood that these performance metrics can be calculated or estimated according to the actual application and any appropriate method, which is not detailed here.
- the user's set of schedulable carrier units includes one or more selected among all carrier units available to the user for allocation to the user during resource scheduling.
- Candidate carrier unit In one example, a user's set of schedulable carrier units can include all of the carrier units available to the user. If the user does not support carrier aggregation, the set of schedulable carrier units in the user is a certain carrier unit used by the user. In another example, the user's set of schedulable carrier units can include one or more of all of the carrier units available to the user.
- a resource block corresponding to a plurality of first performance indicators having a larger value is selected among all the resource blocks in the user's schedulable carrier unit set to be allocated to the user.
- the resource blocks corresponding to the plurality of first performance indicators having the largest value may be allocated to the user according to the value of the first performance indicator of the user on each resource block.
- a plurality of resource blocks of the plurality of resource blocks in the schedulable set of carrier units that are better than the first performance indicator of the user (not necessarily the first performance indicator value being the largest) may be allocated to the user.
- the methods for selecting resource blocks herein are merely exemplary, and those of ordinary skill in the art will appreciate that the present invention is not limited to the examples and embodiments enumerated.
- the number of resource blocks allocated to the user may be determined according to actual needs (such as the resource requirements of the user), and will not be described in detail herein. It should also be understood that when the user is a user supporting carrier aggregation, the above allocation step may allocate resource blocks in multiple (continuous or discontinuous) carrier units to the user; and when the user is a user that does not support carrier aggregation, At this time, only the resource blocks in the carrier unit supported by the user can be allocated to the user.
- the method may further include the following steps: determining whether the user satisfies a condition for occupying the resource block (referred to as a first condition for convenience of description).
- the first condition may include: the user-schedulable carrier unit and the resource block in the resource block cannot be occupied by other users, and the number of times the resource block is multiplexed cannot exceed the number of transmitting antennas, and the number of resource blocks occupied by each user cannot be Exceeding the number of receiving antennas, etc., here is not - enumerated.
- the conditions set forth herein are exemplary and not exhaustive. One of ordinary skill in the art can select other ⁇ to determine whether the user can occupy a certain resource block. The invention is not limited to the examples and embodiments shown.
- the set of schedulable carrier units of the user "( u Sch u ) in the user set be CC UC (CG CC UC , c denotes an element in the set CCm (ie, each carrier unit)),
- a first performance indicator 7_ is calculated on a set of all available resource blocks in a contigable set of carrier units CC approximate by a user u ( ue Sch u ) in the user set / ⁇ .
- the first performance indicator ⁇ may be user traffic, channel gain, signal to noise ratio, frequency transmission efficiency, or bit error rate, and may be selected according to actual needs.
- the user is calculated ⁇ (u Sch u) in which the set of schedulable component carriers CC "performance on a certain carrier resource block r in a cell C ⁇ £ i.e. calculate or estimate the user on the resource block Performance indicators such as traffic, channel gain, signal-to-noise ratio, frequency usage efficiency, or bit error rate. It should be understood that these performance indicators may be calculated or estimated according to practical applications and using any suitable method, which are not detailed herein.
- the calculated first performance index values 7 ⁇ - are arranged in descending order of the value, and the carrier units corresponding to the previous K (K ⁇ l) values and the resource blocks therein are allocated to the user.
- K (K ⁇ l) values and the resource blocks therein are allocated to the user.
- the first condition may be The carrier unit c and the resource blocks therein cannot be occupied by other users. The number of times the resource blocks are multiplexed cannot exceed the number of transmitting antennas, and the number of resource blocks occupied by each user cannot exceed the number of receiving antennas. If the condition is met, the carrier unit c and the resource block therein are allocated to the user.
- FIG. 5 shows an example of the distributed resource allocation method shown in FIG. As shown in FIG. 5, the distributed resource allocation may include the following steps S509 and S511. [50] In step 509, respectively calculating performance indicators of each user in the set of users to be scheduled of the communication network on each assignable resource block in its schedulable set of carrier units (for convenience of description, Second performance indicator).
- the second performance indicator may be user traffic, channel gain, signal to noise ratio, frequency transmission efficiency or bit error rate, etc., as can be understood by those skilled in the art, and may be selected according to needs in a specific application. Not listed here. Calculating or estimating a second performance indicator of a user on an assignable resource block of a schedulable carrier unit, calculating or estimating the user's traffic, channel gain, bit error rate, and frequency transmission on the resource block Performance metrics such as efficiency or bit error rate. It should be understood that these performance metrics may be calculated or estimated according to the actual application, using any suitable method, and are not detailed here.
- a resource block corresponding to the second performance indicator with a larger value is selected in the resource block of the carrier unit and allocated to the user.
- multiple resource blocks of each carrier unit in the set of user schedulable carrier units may be respectively sorted according to the value of the second performance indicator, and the resource block allocation corresponding to the performance index with the largest value is selected.
- a resource block corresponding to a larger (rather than the largest) performance indicator may be allocated to the user in a plurality of resource blocks of each carrier unit according to actual needs.
- the foregoing allocation step 511 may select a resource block to be allocated to the user in each of the carrier units supported by the user; and when the user does not support the carrier When a user is aggregated, a resource block can only be selected for the user in the carrier unit supported by the user.
- Step 511 can be continued to allocate the remaining resources to these users.
- the method may further include the following steps: determining whether the user satisfies a condition for occupying the resource block (referred to as a second condition for convenience of description).
- the second condition may include: the user-schedulable carrier unit and the resource block in the resource block cannot be occupied by other users, and the number of times the resource block is multiplexed cannot exceed the number of transmitting antennas, and the number of resource blocks occupied by each user cannot be More than the number of receiving antennas, etc. Wait, here is not - enumeration. It should be understood that the conditions set forth herein are illustrative and not exhaustive. One of ordinary skill in the art can select other ⁇ to determine whether the user can occupy a certain resource block. The invention is not limited to the examples and embodiments shown.
- the set of users to be scheduled is Sch u u Sch u .
- the set of users to be scheduled is Sch u u Sch u .
- "represents the elements in the user collection / ⁇ (ie each user), u l, ..., N.
- N is a positive integer, indicating the number of users in the collection.
- Set the user in the user collection ( )
- the set of schedulable carrier units is cc uc .
- the user performance indicator 7_ may be user traffic, channel gain, signal to noise ratio, frequency usage efficiency, or bit error rate.
- the user performance indicator r of the user M on the resource block r of the carrier unit c is calculated, that is, the performance index of the user's traffic, channel gain, frequency transmission efficiency or bit error rate on the resource block is calculated or estimated. It should be understood that these performance indicators may be calculated or estimated according to the actual application, using any suitable method.
- the resource block before the resource block is allocated to the user, it is also possible to check whether the user "satisfies the condition of occupying the carrier unit c and the resource block r therein.
- the condition may include: the carrier unit c and therein
- the resource block r cannot be occupied by other users.
- the number of times the resource block r is multiplexed cannot exceed the number of transmitting antennas.
- the number of resource blocks occupied by each user cannot be More than the number of receiving antennas. If the condition is met, the carrier unit c and the resource blocks therein are allocated to the user.
- FIG. 6 is a schematic flow chart showing a resource allocation method according to another embodiment of the present invention.
- the method shown in Fig. 6 is similar to the previous embodiment, except that the method shown in Fig. 6 further includes the step of judging whether the amount of available resources of the communication network satisfies the resource requirements of all users requesting the service.
- steps S601 and S603 may be similar to the corresponding steps in the foregoing embodiment (eg, S201, S203 in FIG. 2 or S301, S301-1, S303-1, S303 in FIG. 3). -2 ) Similar, no more details here.
- step S605 before the resource allocation is performed, it is judged whether the amount of available resources in the communication network satisfies the resource requirements of all users requesting the service. If so, in step S606, all users requesting the service are regarded as a set of users to be scheduled. If not, in step S607, one or more users are selected among all users requesting the service as a set of users to be scheduled. Users can be selected based on the total amount of available resources and the user's priority level, performance metrics, resource requirements, and so on.
- Fig. 7 shows an example of step S607.
- the method of selecting a user shown in Fig. 7 includes steps S707-1 and S707-2.
- a performance indicator of a user of each request service on its schedulable set of carrier units (referred to as a third performance indicator for convenience of description) is calculated.
- step S707-2 one or more users corresponding to one or more third performance indicators having the largest value are selected as the set of users to be scheduled.
- the number of users selected can be determined according to the amount of available resources and the resource requirements of these users, which are not described in detail herein.
- the performance indicator may be a signal to noise ratio, a channel gain, a user flow rate, a frequency usage efficiency, or a bit error rate.
- calculating the performance indicator c of the user W ( ⁇ rad) on the carrier unit C in the set of carrier units that it can support ie calculating or estimating the signal-to-noise ratio, traffic, channel gain, frequency of the user on the carrier unit Use efficiency or bit error rate And other performance indicators. It should be understood that these performance indicators may be calculated or estimated according to practical applications, using any suitable method, and are not detailed here. Then, computing users "it can support the set of component carriers c" on the average performance indicators S -.
- AVG which is also called a third average performance index for the user does not support the performance of carrier aggregation, because it supports the carrier There is only one unit, so 5 ⁇ ⁇ ' ⁇ c ⁇
- the average performance indicator s_ AVG "equal to the performance index of all users on all carriers C in the set of supported carrier units c" Average, ie
- the average performance indicator of the set of users Sch u to be scheduled is equal to the average of the third performance indicator ⁇ - AVG of all users in the user set.
- KchJ represents the number of elements (ie, users) in the user collection ⁇ .
- the schedulable carrier unit set CC formula, £ for each user u ( ue Sch u ) is determined according to the average performance indicator of the user set Sch u to be scheduled. If the user “does not support carrier aggregation, its schedulable carrier
- its schedulable carrier unit set CC ⁇ may include a carrier unit: the performance index s u , c of the user u ( ue Sch u ) on the carrier unit c is higher than the to-be-scheduled
- the schedulable carrier unit set ccGHz, £ of each user u ( ue Sch u ) in the user set Sch u to be scheduled can be determined.
- the performance index is calculated as described above, and is no longer here. Repeat.
- the resource allocation method may further include the step of ordering users in the set of users to be scheduled, such that each user in the set of users to be scheduled may be allocated resources in order.
- Figure 8 is a diagram showing an example of selecting a set of users to be scheduled and sorting the users by the user's performance metrics. As shown in Fig. 8, steps S807-1 and S807-2 are similar to S707-1 and S707-2 in Fig. 7, and will not be described again here. In step S808, each user may be sorted according to the size of the third performance indicator.
- the user can be sorted by the following method.
- the average performance indicator H AVG " of each user to be scheduled in the set of users to be scheduled" can be separately calculated:
- Len(CC uc ) is the average of the user's "average performance indicator SSch - AVG " equal to the sum of the performance indicators e of the user on all carrier units C in its schedulable set of carrier units CC ⁇ .
- l (CC uc ) represents the number of elements (ie, carrier elements) of the set CC U c .
- the value of the average performance index H AVG " is sorted in descending order. According to the order of magnitude of H AVG ", resources are allocated to users in turn, until all resources to be scheduled are allocated enough resources or all available resources have been allocated The assignment is complete.
- each user in the set of users to be scheduled may also be sorted according to the priority level of the user.
- the throughput and frequency utilization efficiency of the system can be effectively improved. It can also improve the fairness of users, especially for the case of user terminals supporting both carrier aggregation and carrier aggregation, which can effectively solve the fair scheduling problem of these two types of users. In addition, with the method in the above embodiment, the multi-user diversity gain can be effectively improved.
- the resource allocation apparatus includes a convergence mode determining module 901 and points.
- the mode selection module 903 is configured to determine a carrier aggregation mode of the communication network.
- the allocation mode selection module is configured to select a resource allocation mode of the communication network according to a carrier aggregation mode of the communication network.
- the communication network described herein is a communication system supporting carrier aggregation, such as the communication network shown in FIG.
- the communication network may include nodes that support carrier aggregation (such as terminal 102 shown in Figure 1), and may also include nodes that do not support carrier aggregation (terminals 103 and 104 as shown in Figure 1).
- the allocation mode selection module can determine the carrier aggregation mode supported by the communication network through the primary node (e.g., base station) of the communication network.
- the carrier aggregation mode of the communication network generally includes continuous carrier aggregation (CC 1 and CC 2 as shown in FIG. 1 ) and discontinuous carrier aggregation (CC 1 and CC 3 as shown in FIG. 1 ).
- the allocation mode selection module 903 may be configured to: when the aggregation mode determining module 901 determines that the carrier aggregation mode of the communication network is continuous, select a centralized resource allocation manner to allocate the communication. The resource of the network; when the aggregation mode determining module 901 determines that the carrier aggregation mode of the communication network is non-continuous, the distributed resource allocation mode is selected to allocate resources of the communication network.
- FIG. 10 is a schematic block diagram showing a resource allocation device according to another embodiment of the present invention.
- the resource allocation apparatus shown in FIG. 10 includes a convergence mode determination module 1001, an allocation mode selection module 1003, and a resource allocation module 1005.
- the convergence mode determination module 1001 and the distribution mode selection module 1003 are similar to the modules 901 and 903 in the foregoing embodiment or example, and are not described herein again.
- the resource allocation module 1005 is configured to perform resource allocation according to the selected resource allocation manner.
- the resource allocation module 1005 is configured to: calculate, for each user in the set of users to be scheduled of the communication network, the user in its schedulable set of carrier units a first performance indicator on each of the allocateable resource blocks; and selecting, among all the resource blocks in the set of user-schedulable carrier units, a resource block corresponding to the plurality of first performance indicators having a larger value to be allocated to the resource block user.
- the first performance indicator may be user traffic, channel gain, signal to noise ratio, frequency transmission efficiency or bit error rate, etc., as can be understood by those skilled in the art. In the specific application, you can choose according to your needs, not listed here.
- the resource allocation module may use the method embodiments and/or the methods in the example to calculate the first performance indicator, which is not repeated here.
- a user's set of schedulable carrier units can include all of the carrier units available to the user. If the user does not support carrier aggregation, the set of adjustable carrier units in the user is a certain carrier unit used by the user. In another example, the user's set of schedulable carrier units can include one or more of all of the carrier units available to the user.
- the resource blocks corresponding to the plurality of first performance indicators having the largest value may be allocated to the user according to the value of the first performance indicator of the user on each resource block.
- a plurality of resource blocks in the schedulable plurality of resource blocks in which the first performance indicator of the user is better may be allocated to the user.
- the number of resource blocks allocated to the user may be determined according to actual needs (such as the resource requirements of the user), and will not be described in detail herein. It should also be understood that when the user is a user supporting carrier aggregation, the above allocation step may allocate resource blocks in multiple (continuous or discontinuous) carrier units to the user; and when the user is a user that does not support carrier aggregation, At this time, only the resource blocks in the carrier unit supported by the user can be allocated to the user.
- the resource allocation module 1005 may further perform the following steps: determining whether the user satisfies the condition for occupying the resource block (refer to the first condition for convenience of description) ).
- the first condition may include: the user-schedulable carrier unit and the resource block in the resource block cannot be occupied by other users, and the number of times the resource block is multiplexed cannot exceed the number of transmitting antennas, and the number of resource blocks occupied by each user cannot be Exceeding the number of receiving antennas, etc., not listed here. It should be understood that the conditions set forth herein are illustrative and not exhaustive. One of ordinary skill in the art can select other ⁇ to determine whether the user can occupy a certain resource block. The invention is not limited to the illustrated examples and embodiments.
- the resource allocation module 1005 is configured to: calculate, in the traversable, each user of the set of users to be scheduled in the communication network a second performance indicator on each of the assignable resource blocks in the set of carrier units; and corresponding to each carrier unit schedulable by the user, selecting a second performance indicator having a larger value in the resource block of the carrier unit The resource block is assigned to the user.
- the second performance indicator may be user traffic, channel gain, signal to noise ratio, frequency transmission efficiency or bit error rate, etc., as will be understood by those skilled in the art. In the specific application, you can choose according to your needs, not listed here.
- the resource allocation module may use the method embodiments and/or the methods in the examples to calculate the second performance indicator, which is not repeated here.
- multiple resource blocks of each carrier unit in the set of user schedulable carrier units may be respectively sorted according to the value of the second performance indicator, where the performance index corresponding to the largest value is selected. Resource blocks are assigned to users. As another example, according to actual needs, among the multiple resource blocks of each carrier unit in the set of carrier units that can be scheduled by the user, one of the performance indicators corresponding to the larger (rather than the largest) value is selected. Resource blocks are assigned to users.
- the methods for selecting resource blocks herein are merely exemplary, and those of ordinary skill in the art will appreciate that the present invention is not limited to the illustrated examples and embodiments.
- the resource allocation module 1005 may select a resource block to be allocated to the user in each carrier unit of the user's schedulable carrier unit set; and when the user does not support When a carrier is aggregated, only the resource block can be selected for the user in the carrier unit supported by the user.
- the resource allocation Module 1005 can continue to perform the distributed resource allocation described above to allocate the remaining resources to these users.
- the resource allocation module 1005 may further perform the following steps: determining whether the user satisfies the condition for occupying the resource block (for convenience of description, referred to as a second condition) ).
- the second condition may include: the user-schedulable carrier unit and the resource block in the resource block cannot be occupied by other users, and the number of times the resource block is multiplexed cannot exceed the number of transmitting antennas, and the number of resource blocks occupied by each user cannot be Exceeding the number of receiving antennas, etc., not listed here.
- the conditions set forth herein are illustrative and not exhaustive. One of ordinary skill in the art can select other ⁇ to determine whether the user can occupy a certain resource block. The invention is not limited to the examples and examples shown Example.
- FIG. 11 is a schematic block diagram showing a resource allocation device according to another embodiment of the present invention.
- the resource allocation apparatus shown in FIG. 11 is similar to the foregoing embodiment, except that the resource allocation apparatus shown in FIG. 11 includes a user in addition to the aggregation mode determining module 1101, the allocation mode selection module 1103, and the resource allocation module 1105. Module 1107 is selected.
- the aggregation mode determining module 1101, the allocation mode selection module 1103, and the resource allocation module 1105 are similar to the corresponding modules in the foregoing embodiment, and details are not described herein again.
- the user selection module 1107 is configured to: determine whether the amount of available resources in the communication network meets the resource requirements of all users requesting the service, and if so, use all users requesting the service as the set of users to be scheduled, and if not, Then, one or more users are selected among all the users requesting the service as a set of users to be scheduled. As an example, the user selection module 1107 is further configured to calculate a second performance indicator for each user of the requesting service on its schedulable set of carrier units; and to select one or more second performance indicators that have the largest value The corresponding user is used as the set of users to be scheduled. The user selection module 1107 can determine the set of users to be scheduled by using the method adopted in the foregoing method embodiment (for example, the embodiment shown in FIG. 7), and is not repeated here.
- FIG. 12 is a schematic block diagram showing a resource allocation device according to another embodiment of the present invention.
- the resource allocation apparatus shown in FIG. 12 is similar to the embodiment shown in FIG. 11, except that, except for the aggregation mode determination module 1201, the distribution mode selection module 1203, the resource allocation module 1205, and the user selection module 1207, FIG.
- the illustrated resource allocation device also includes a user ranking module 1209.
- the aggregation mode determining module 1201, the allocation mode selection module 1203, the resource allocation module 1205, and the user selection module 12075 are similar to the corresponding modules in the foregoing embodiments, and are not described herein again.
- the user ranking module 1209 is configured to sort the users in the set of users to be scheduled, so that the resource allocation module 1205 can allocate resources for each user in the set of users to be scheduled in order.
- the user ranking module 1209 can sort the users by the method in the foregoing embodiment, and details are not described herein again.
- each step of the foregoing resource allocation method and each component module and/or unit of the resource allocation apparatus may be implemented as software, firmware, hardware, or a combination thereof in a master node (eg, a base station) of the communication network. And as part of the resource scheduling (allocation) device in the MAC (Medium Access Control) layer of the base station.
- a master node eg, a base station
- the resource scheduling (allocation) device in the MAC (Medium Access Control) layer of the base station.
- the specific means or manner in which the various components and units in the above-mentioned devices are configured by software, firmware, hardware or a combination thereof are well known to those skilled in the art and will not be described herein.
- a resource allocation method and/or apparatus may be implemented in a resource scheduling (allocation) device of an existing base station, where each component of the resource scheduling device of the existing base station is configured Be sure to modify it.
- a program constituting the software may be installed from a storage medium or a network to a computer having a dedicated hardware structure (for example, the general-purpose computer 1300 shown in FIG. 13).
- a computer having a dedicated hardware structure for example, the general-purpose computer 1300 shown in FIG. 13.
- a central processing unit (CPU) 1301 performs various processes in accordance with a program stored in a read only memory (ROM) 1302 or a program loaded from the storage portion 1308 to a "storage (RAM) 1303.
- ROM read only memory
- RAM storage
- data required when the CPU 1301 executes various processes and the like are also stored as needed.
- the CPU 1301, the ROM 1302, and the RAM 1303 are linked to each other via the bus 1304.
- the input/output interface 1305 is also linked to the bus 1304.
- an input/output interface 1305 an input portion 1306 (including a keyboard, a mouse, etc.), an output portion 1307 (including a display such as a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and A speaker, etc.), a storage portion 1308 (including a hard disk or the like), a communication portion 1309 (including a network interface card such as a LAN card, a modem, etc.).
- the communication section 1309 performs communication processing via a network such as the Internet.
- the 1310 can also be linked to the input/output interface 1305.
- a removable medium 1311 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory or the like is mounted on the drive 1310 as needed, so that the calculations read therefrom are installed into the storage portion 1308 as needed.
- a program constituting the software is installed from a network such as the Internet or a storage medium such as the removable medium 1311.
- such a storage medium is not limited to the removable medium 1311 shown in FIG. 13 in which a program is stored and distributed separately from the device to provide a program to the user.
- the detachable medium 1311 include a magnetic disk (including a floppy disk (registered trademark):), an optical disk (including a compact disk read only memory (CD-ROM) and a digital versatile disk (DVD)), and a magneto-optical disk (including a mini disk (MD) (registered) Trademark)) and semiconductor memory.
- the storage medium shield may be a ROM 902, a hard disk included in the storage portion 1308, or the like, in which programs are stored, and distributed to the user together with the device containing them.
- the present invention also provides a program product for storing a machine readable instruction code.
- the above-described method according to an embodiment of the present invention can be performed when the instruction code is read and executed by a machine.
- a storage medium for carrying a program product storing the above-described storage machine readable instruction code is also included in the disclosure of the present invention.
- the storage medium includes, but is not limited to, a floppy disk, an optical disk, a magneto-optical disk, a memory card, a memory stick, and the like.
- the method of the present invention is not limited to being executed in the chronological order described in the specification, and may be performed in other chronological order, in parallel, or independently. Therefore, the order of execution of the methods described in the specification does not limit the technical scope of the present invention.
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Description
Claims
Priority Applications (10)
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US13/500,079 US9258091B2 (en) | 2009-10-30 | 2010-10-28 | Resource allocation method and device in communication network |
CA2776537A CA2776537A1 (en) | 2009-10-30 | 2010-10-28 | Resource allocation method and device in communication network |
EP10826092.8A EP2472978B1 (en) | 2009-10-30 | 2010-10-28 | Resource allocation method and device in communication network |
KR1020127011006A KR101675179B1 (ko) | 2009-10-30 | 2010-10-28 | 통신 네트워크에서의 리소스 할당 방법 및 장치 |
BR112012009650A BR112012009650A2 (pt) | 2009-10-30 | 2010-10-28 | método e aparelho para alocar recursos em uma rede de comunicação |
MX2012004658A MX2012004658A (es) | 2009-10-30 | 2010-10-28 | Metodo de asignacion de recursos y dispositivo en red de comuncacion. |
JP2012535615A JP5573957B2 (ja) | 2009-10-30 | 2010-10-28 | 通信ネットワークにおけるリソース配分方法及び装置 |
RU2012122170/07A RU2520602C2 (ru) | 2009-10-30 | 2010-10-28 | Устройство и способ выделения ресурсов в сети связи |
AU2010312097A AU2010312097A1 (en) | 2009-10-30 | 2010-10-28 | Resource allocation method and device in communication network |
ZA2012/03081A ZA201203081B (en) | 2009-10-30 | 2012-04-26 | Resource allocation method and device in communication network |
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JP2015505659A (ja) * | 2012-01-31 | 2015-02-23 | アップル インコーポレイテッド | 拡張可能なキャリヤ配置における効率的なスペクトル使用法のための方法及び装置 |
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US9172402B2 (en) | 2012-03-02 | 2015-10-27 | Qualcomm Incorporated | Multiple-input and multiple-output carrier aggregation receiver reuse architecture |
US9118439B2 (en) | 2012-04-06 | 2015-08-25 | Qualcomm Incorporated | Receiver for imbalanced carriers |
US9166852B2 (en) | 2012-05-25 | 2015-10-20 | Qualcomm Incorporated | Low noise amplifiers with transformer-based signal splitting for carrier aggregation |
US9160598B2 (en) | 2012-05-25 | 2015-10-13 | Qualcomm Incorporated | Low noise amplifiers with cascode divert switch for carrier aggregation |
US9154357B2 (en) | 2012-05-25 | 2015-10-06 | Qualcomm Incorporated | Multiple-input multiple-output (MIMO) low noise amplifiers for carrier aggregation |
US9154356B2 (en) | 2012-05-25 | 2015-10-06 | Qualcomm Incorporated | Low noise amplifiers for carrier aggregation |
US9867194B2 (en) | 2012-06-12 | 2018-01-09 | Qualcomm Incorporated | Dynamic UE scheduling with shared antenna and carrier aggregation |
US9300420B2 (en) | 2012-09-11 | 2016-03-29 | Qualcomm Incorporated | Carrier aggregation receiver architecture |
US9543903B2 (en) | 2012-10-22 | 2017-01-10 | Qualcomm Incorporated | Amplifiers with noise splitting |
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US10177722B2 (en) | 2016-01-12 | 2019-01-08 | Qualcomm Incorporated | Carrier aggregation low-noise amplifier with tunable integrated power splitter |
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CA2776537A1 (en) | 2011-05-05 |
JP5573957B2 (ja) | 2014-08-20 |
MX2012004658A (es) | 2012-05-08 |
EP2472978A1 (en) | 2012-07-04 |
EP2472978A4 (en) | 2017-03-22 |
US20120198077A1 (en) | 2012-08-02 |
KR20120101370A (ko) | 2012-09-13 |
JP2013509120A (ja) | 2013-03-07 |
BR112012009650A2 (pt) | 2016-05-17 |
RU2012122170A (ru) | 2013-12-10 |
CN102056296A (zh) | 2011-05-11 |
EP2472978B1 (en) | 2018-12-05 |
KR101675179B1 (ko) | 2016-11-22 |
CN102056296B (zh) | 2016-03-30 |
US9258091B2 (en) | 2016-02-09 |
RU2520602C2 (ru) | 2014-06-27 |
ZA201203081B (en) | 2012-09-26 |
AU2010312097A1 (en) | 2012-05-17 |
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