CN108271258B - Carrier allocation method and device - Google Patents
Carrier allocation method and device Download PDFInfo
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- CN108271258B CN108271258B CN201611262410.9A CN201611262410A CN108271258B CN 108271258 B CN108271258 B CN 108271258B CN 201611262410 A CN201611262410 A CN 201611262410A CN 108271258 B CN108271258 B CN 108271258B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
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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
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/541—Allocation or scheduling criteria for wireless resources based on quality criteria using the level of interference
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
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Abstract
The invention discloses a carrier allocation method and equipment, which are used for providing a new SCC allocation method to improve the transmission rate of UE. The method comprises the following steps: the network equipment calculates a first signal-to-interference-and-noise ratio and a second signal-to-interference-and-noise ratio; wherein, the first signal to interference plus noise ratio is the current signal to interference plus noise ratio of the system, and the second signal to interference plus noise ratio is: after allocating a resource unit for the user equipment, the system comprises the largest signal-to-interference-and-noise ratio of the signal-to-interference-and-noise ratios of at least two carriers; the at least two carriers comprise a primary carrier allocated to the user equipment and an optional secondary carrier capable of being allocated to the user equipment; if the second sir is greater than the first sir, the network device allocates, according to a correspondence between sirs and resource units, carriers having sirs greater than the first sir among the at least two carriers to the user equipment as secondary carriers.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a carrier allocation method and device.
Background
In order to support the fast-growing mobile data volume, a long Term Evolution (L ong Term Evolution-Advanced, L TE-a) system introduces a Carrier Aggregation (CA) technology to enhance the rate of L TE on the basis of a long Term Evolution (L ong Term Evolution, L TE) technology.
The carrier aggregation technique is to provide a higher transmission bandwidth for a User Equipment (UE) by aggregating multiple carriers together, so as to increase an uplink rate or a downlink rate of the UE.
Wherein, each aggregated Carrier is called a Component Carrier (CC) to extend the transmission bandwidth of the UE. The aggregated carriers may be divided into primary carriers pcc (primary cc) and secondary carriers scc (secondary cc) according to different functions. Each UE generally has only one PCC, and the SCCs may be configured according to the size of the user service data volume, the number of the SCCs of each UE is not fixed, and one SCC may be an SCC of multiple PCCs. Since the number of SCCs per UE is not fixed, it is involved in selecting SCCs for the UE. Currently, two more common methods for selecting SCC are a carrier selection method based on minimum handover and a carrier selection method based on load balancing.
The carrier selection method based on the least handover is to select a carrier with the maximum Reference Signal Receiving Power (RSRP) value as the scc of the UE, however, due to the influence of the time division long Term Evolution (TD-L TE) networking characteristics, the solution of the interference problem has become a focus of improving the quality of the L TE network.
The carrier selection method based on load balancing is to study the load balancing problem of carriers and can realize load balancing among the carriers. However, this algorithm is only suitable for high load situations and has a limited range of applications.
As can be seen, there is currently no method of better selecting SCC.
Disclosure of Invention
The embodiment of the invention provides a carrier allocation method and equipment, which are used for providing a new SCC allocation method so as to improve the transmission rate of UE.
In a first aspect, a carrier allocation method is provided, including:
the network equipment calculates a first signal-to-interference-and-noise ratio and a second signal-to-interference-and-noise ratio; wherein, the first signal to interference plus noise ratio is the current signal to interference plus noise ratio of the system, and the second signal to interference plus noise ratio is: after allocating a resource unit for the user equipment, the system comprises the largest signal-to-interference-and-noise ratio of the signal-to-interference-and-noise ratios of at least two carriers; the at least two carriers comprise a primary carrier allocated to the user equipment and an optional secondary carrier capable of being allocated to the user equipment;
if the second sir is greater than the first sir, the network device allocates, according to a correspondence between sirs and resource units, carriers having sirs greater than the first sir among the at least two carriers to the user equipment as secondary carriers.
Optionally, before the network device calculates the first signal to interference plus noise ratio and the second signal to interference plus noise ratio, the method further includes:
and the network equipment establishes the corresponding relation among the signal-to-interference-and-noise ratio, the carrier and the resource unit.
Optionally, the network device establishes the correspondence between the signal-to-interference-and-noise ratio, the carrier, and the resource unit, and includes:
the network equipment allocates H resource units for the user equipment, and respectively calculates the signal-to-interference-and-noise ratios of the at least two carriers after allocating each resource unit for the user equipment; h is a positive integer;
and the network equipment establishes the corresponding relation among the signal-to-interference-and-noise ratio, the carrier and the resource unit according to the calculation result.
Optionally, the method further includes:
the network equipment receives search information sent by the user equipment, wherein the search information is used for indicating selectable secondary carriers which can be allocated to the user equipment.
Optionally, the method further includes:
the network equipment determines resource requirement information of the user equipment so as to determine the number of the auxiliary carriers required by the user equipment.
In a second aspect, a network device is provided, including:
the calculation module is used for calculating a first signal to interference plus noise ratio and a second signal to interference plus noise ratio; wherein, the first signal to interference plus noise ratio is the current signal to interference plus noise ratio of the system, and the second signal to interference plus noise ratio is: after allocating a resource unit for the user equipment, the system comprises the largest signal-to-interference-and-noise ratio of the signal-to-interference-and-noise ratios of at least two carriers; the at least two carriers comprise a primary carrier allocated to the user equipment and an optional secondary carrier capable of being allocated to the user equipment;
and an allocating module, configured to allocate, according to a correspondence between the sir and the resource unit, carriers, of the at least two carriers, in which the sirs other than the primary carrier are larger than the first sir, to the user equipment as secondary carriers if the second sir is larger than the first sir.
Optionally, the network device further includes an establishing module, configured to:
before the calculation module calculates the first SINR and the second SINR, establishing the corresponding relationship among the SINR, the carrier and the resource units.
Optionally, the establishing module is configured to:
allocating H resource units to the user equipment, and respectively calculating the signal-to-interference-and-noise ratios of the at least two carriers after allocating each resource unit to the user equipment; h is a positive integer;
and establishing the corresponding relation among the signal-to-interference-and-noise ratio, the carrier and the resource unit according to the calculation result.
Optionally, the network device further includes a receiving module, configured to:
receiving search information sent by the user equipment, wherein the search information is used for indicating selectable secondary carriers capable of being allocated to the user equipment.
Optionally, the network device further includes a determining module, configured to:
and determining the resource requirement information of the user equipment so as to determine the number of the auxiliary carriers required by the user equipment.
The embodiment of the invention mainly allocates SCC for the user equipment according to the signal-to-interference-and-noise ratio, if the second signal-to-interference-and-noise ratio is larger than the first signal-to-interference-and-noise ratio, the second signal-to-interference-and-noise ratio indicates that better carrier waves can be allocated to the user equipment as auxiliary carrier waves, and the corresponding auxiliary carrier waves are allocated to the user equipment according to the signal-to-interference-and-noise ratio and the corresponding relation between the carrier waves and the resource units, so that the signal-to-interference-and-noise ratio of the system is.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments of the present invention will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a flowchart of a carrier allocation method according to an embodiment of the present invention;
FIG. 2 is a three-dimensional coordinate system for building a three-dimensional model according to an embodiment of the present invention;
FIG. 3 is an example of a three-dimensional model built in an embodiment of the present invention;
FIG. 4 is an example of carrier allocation according to a three-dimensional model in an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a network device according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a network device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. 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.
Hereinafter, some terms in the present invention will be explained to facilitate understanding by those skilled in the art.
1) The User equipment may include a Wireless Terminal device, a Mobile Terminal device, a Subscriber Unit (Subscriber Unit), a Subscriber Station (Subscriber Station), a Mobile Station (Mobile Station), a Remote Station (Remote Station), an Access Point (Access Point, AP), a Remote Terminal device (Remote Terminal), an Access Terminal device (Access Terminal), a User Terminal device (User Terminal), a User Agent (User Agent), a UE, or User equipment (User Terminal), and the like, and may be, for example, a Mobile phone (or so-called "cellular" phone), a computer with a Mobile Terminal device, a handheld device, a Personal computer with a Mobile Terminal device, a Personal computer with a Mobile phone, a Personal computer with a Personal computer, a Personal communication device, a Personal equipment (Personal Digital Assistant, a Wireless modem, etc.
2) The base station may be configured to translate received radio frames and Internet Protocol (IP) packets to and from each other as a router between the wireless terminal device and the rest of the access network, where the rest of the access network may include an IP network.
3) The Signal to Interference plus noise ratio (SINR), which is the ratio of the received strength of the useful Signal to the received strength of the Interference Signal (noise and Interference), is a more critical factor affecting the communication quality.
4) The core thought of the carrier aggregation technology is that a plurality of continuous or discrete carriers are aggregated together to form a wider frequency spectrum so as to provide a higher transmission bandwidth for the UE, and the application of the technology not only meets the requirement of L TE-A in the aspect of bandwidth, but also can improve the utilization rate of frequency spectrum fragments.
5) In the embodiment of the present invention, the "cell" and the "carrier" are the same concept, and they are interchangeable, that is, one carrier may also be understood as one cell. "plurality" means two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" generally indicates that the preceding and following related objects are in an "or" relationship, unless otherwise specified.
The technical solution provided by the embodiment of the present invention may be applied to L TE-a systems, and may also be applied to other communication systems, as long as the communication systems capable of applying the carrier aggregation technology are all the communication systems to which the embodiment of the present invention is applied.
The technical scheme provided by the embodiment of the invention is described in the following with the accompanying drawings of the specification.
Referring to fig. 1, an embodiment of the present invention provides a carrier allocation method, it should be noted that the carrier allocation method in the embodiment of the present invention may be applied to each user equipment, and one of the user equipments is mainly taken as an example below. The flow of the method is described below.
S11, the ue searches all available carriers covered by the ue and determines which carriers are carriers that can be selected as secondary carriers of the ue.
One carrier is to be selected as a secondary carrier of the ue, and the conditions to be satisfied include, but are not limited to, the following two conditions:
1. the carrier is that there are available resources;
2. the carrier already conforms to the aggregation condition of carrier aggregation. Regarding the aggregation condition, there may be different settings according to different factors such as regions and networks, and the embodiments of the present invention are not limited.
After the ue searches, if one carrier satisfies the above two conditions, the ue may determine that the carrier is a carrier that can be selected as the secondary carrier of the ue.
Where S11 is an optional step rather than a mandatory step, the box used to represent S11 is drawn as a dotted line in fig. 1 in order to distinguish it from the mandatory step.
S12, the user equipment sends the search information to the network equipment, and the network equipment receives the search information. The search information is used to indicate optional secondary carriers that can be allocated to the user equipment.
That is, the ue searches to determine which carriers can be selected as secondary carriers of the ue, the ue sends search information to the network device, and the network device allocates secondary carriers to the ue from the selectable secondary carriers determined by the ue search.
Where S12 is an optional step rather than a mandatory step, the arrow used to indicate S12 is drawn as a dotted line in fig. 1 in order to distinguish it from the mandatory step.
S13, the network device establishes a correspondence between the signal-to-interference-and-noise ratio, the carrier, and the Resource Element (RE).
The network device may allocate H REs to the ue, where H is a positive integer. Wherein the SINRs of at least two carriers are calculated for each RE allocated to the user equipment. The at least two carriers include the PCC of the user equipment and the optional secondary carrier determined by the user equipment. Wherein, one RE is allocated, one SINR may be calculated for each carrier, and the SINR of one carrier after one RE is allocated to the user equipment may be calculated according to the following formula:
in formula (1), l is 1, 2, … … N, where N is the number of carriers, i.e., the number of at least two carriers. N is a radical of0In order to overlap the floor noise of the coverage area,
and the power interference value brought by other carriers except the carrier where the user equipment is located at the time-frequency position corresponding to the allocated RE. p is a radical oflAnd allocating the power of the ith carrier at the time-frequency position corresponding to the RE. The ith carrier is the carrier where the ue is located.
At least two SINRs can be calculated (one SINR is calculated for one carrier) by allocating one RE to the user equipment. H REs may be allocated to the ue, and at least two SINRs are calculated for each RE. Accordingly, the network device can establish a correspondence relationship between the SINR, the RE, and the carrier according to the allocated number of the RE, the calculated SINR, and the identification number (ID) of the carrier, and the correspondence relationship can be understood as a correspondence relationship between the SINR, the number of the RE, and the ID of the carrier.
In a possible embodiment, the correspondence may be presented by a three-dimensional model, and the network device may establish the three-dimensional model according to a three-dimensional coordinate system shown in fig. 2, where three dimensions in fig. 2 are SINR, number of REs, and ID of a carrier, respectively. A three-dimensional model built from the coordinate system shown in fig. 2 can be referred to fig. 3. Of course, the network device may also establish the corresponding relationship in other forms, and is not limited to the three-dimensional model, and the embodiment of the present invention does not limit the expression form of the corresponding relationship.
For different user equipments, the network equipment may establish different corresponding relationships between SINR, REs, and carriers, which may be understood as that the user equipments are in one-to-one correspondence with the corresponding relationships. When the network device allocates carriers to different user devices, the carriers can be allocated according to respective corresponding relationships of the user devices.
Where S13 is an optional step rather than a mandatory step, the box used to represent S13 is drawn as a dotted line in fig. 1 in order to distinguish it from the mandatory step.
S14, the network equipment calculates a first signal to interference and noise ratio and a second signal to interference and noise ratio. Wherein, the first signal interference noise ratio is the current signal interference noise ratio of the system, and the second signal interference noise ratio is: a maximum SINR among SINRs of at least two carriers after allocating one RE to the user equipment. That is, after one RE is allocated to the user equipment, at least two SINRs may be calculated for at least two carriers, where the SINR with the largest value is used as the second signal-to-interference-and-noise ratio.
That is, after establishing the correspondence between the SINR, the RE, and the carrier, the network device may allocate the carrier to the user equipment according to the correspondence. When a carrier needs to be allocated for the user equipment, the network equipment starts to perform S14. That is, after executing S13, S14 may be executed again at an arbitrary interval, or it may be possible even if S14 is not executed.
In a possible embodiment, the network device may calculate the first signal to interference plus noise ratio according to the following formula:
in equation (2), SINRNOWFor the first signal to interference and noise ratio,
for the total power of the selected REs in the current system, it should be noted that the values of l and k are directional values, and only the selected aggregated carriers and their selected REs for the selected ue are valid l and k.
Is the power of the non-selected carrier at the time-frequency location of the RE when l and k are selected. M is the maximum number of remaining REs, i.e. the total number of remaining available REs of the SCC and PCC to be selected.
In a possible embodiment, the network device may calculate the second signal to interference plus noise ratio according to the following formula:
in the formula (3), the first and second groups,
is the second signal to interference plus noise ratio.
Is the power of the non-selected carrier at the time-frequency location of the RE when l is selected.
In addition, when allocating REs to user equipments, only one user equipment can be allocated with available REs, that is, REs that have not been allocated to other user equipments. Then, if it is determined that there is
When the corresponding RE has other user equipment designated to the aggregation system of other user equipment, the RE should be skipped to continue to allocate and select other available REs.
And S15, if the second SINR is larger than the first SINR, allocating carriers with SINRs larger than the first SINR to the user equipment as secondary carriers in the at least two carriers according to the corresponding relationship between the SINRs and the carriers and the resource units.
After the network device calculates the first and second sirs, the first and second sirs may be compared, and if the second sir is greater than the first sir, it indicates that the SINRs of at least two carriers are better, and the carrier may be used as the SCC allocated to the user equipment. Then, if the second sir is greater than the first sir, the network device may allocate the SCC to the user equipment according to the previously established correspondence between the SINR, the RE, and the carrier. The network device may allocate, to the user equipment, a carrier, which is other than the PCC of the user equipment and has an SINR greater than the first signal to interference plus noise ratio, of the at least two carriers, as the SCC of the user equipment.
Specifically, if the correspondence between SINR, RE and carrier stored by the network device is the three-dimensional model shown in fig. 3, the network device allocates the SCC to the user equipment, which can be implemented as follows: converting Z to SINRNOWThe plane (called the Z plane in FIG. 4) is placed in the built three-dimensional model, as shown in FIG. 4, the three-dimensional model in FIG. 4The model is again exemplified by the three-dimensional model in fig. 3. In fig. 4, the position Z ═ SINR in the three-dimensional model is shownNOWAll discrete points above the plane are selected, and the carriers corresponding to the discrete points are selected as the SCC of the user equipment. In addition, the REs corresponding to these discrete points are then allocated to the corresponding SCCs. For example, if a discrete point 1 is selected in the three-dimensional model, and a carrier corresponding to the discrete point 1 is allocated to the user equipment as one SCC, then an RE corresponding to the discrete point is also allocated to the SCC.
In a possible implementation, the network device may further count the resource caching amount of the user equipment, that is, determine the resource requirement information of the user equipment, so as to determine the number of SCCs required by the user equipment and the number of REs required by the user equipment, and thus may allocate the number of SCCs and REs required by the user equipment to the user equipment. The network device may count the downlink resource requirement information of the user equipment, or may count the uplink resource requirement information of the user equipment. If the downlink resource requirement information of the user equipment is counted, the network equipment can count by itself, and if the uplink resource requirement information of the user equipment is counted, the network equipment can request the user equipment to send the uplink resource requirement information of the user equipment to the network equipment, so that the network equipment can determine the uplink resource requirement information of the user equipment. Wherein the network device determines the resource requirement information of the user device, which may occur anywhere in the above process.
Therefore, in the embodiment of the present invention, S15 may be repeatedly executed until all the resources to be transmitted of the ue are transmitted, that is, until the required number of SCCs and REs are allocated to the ue, it is determined that the carrier allocation is completed, or S15 is repeatedly executed until the calculated second sir is less than or equal to the first sir, and it is determined that the carrier allocation is completed. Therefore, the PCC of the user equipment and the SCC allocated to the user equipment by the network equipment constitute a carrier aggregation system of the user equipment, and the SINR of the carrier aggregation system may be the maximum, so as to ensure the transmission rate of the user equipment and improve the communication quality.
The prior art does not fully consider the SINR of the whole system, cannot ensure the SINR and throughput of the system to be maximized, and has a loss in transmission rate. By adopting the technical scheme provided by the embodiment of the invention, the resource allocation of the optimal SINR based on the throughput under the carrier aggregation system can be realized.
In addition, the prior art scheme cannot realize fast allocation of REs and fast correspondence of SCC resources to user equipment. According to the embodiment of the invention, after SCC resources which are allocated and higher than the SINR of the current system are quickly compared in a three-dimensional modeling mode, the quick allocation of SCC and RE is realized by correspondingly selecting all resources above a Z plane and the user equipment, and the resource allocation efficiency is high.
The following describes the apparatus provided by the embodiment of the present invention with reference to the drawings.
Referring to fig. 5, an embodiment of the present invention provides a network device, which includes a calculating module 501 and an allocating module 502.
The calculating module 501 is configured to calculate a first signal to interference plus noise ratio and a second signal to interference plus noise ratio; wherein, the first signal to interference plus noise ratio is the current signal to interference plus noise ratio of the system, and the second signal to interference plus noise ratio is: after allocating a resource unit for the user equipment, the system comprises the largest signal-to-interference-and-noise ratio of the signal-to-interference-and-noise ratios of at least two carriers; the at least two carriers comprise a primary carrier allocated to the user equipment and an optional secondary carrier capable of being allocated to the user equipment;
an allocating module 502, configured to allocate, according to a correspondence between the sir and the resource unit, carriers, of the at least two carriers, in which the sirs other than the primary carrier are greater than the first sir, to the user equipment as secondary carriers if the second sir is greater than the first sir.
In a possible implementation, the network device further includes a setup module 503, see fig. 6. Since the establishing module 503 is an optional functional module, it is drawn as a dotted line in fig. 6 to distinguish it from a necessary functional module. A building module 503, configured to:
before the calculating module 501 calculates the first sir and the second sir, the correspondence between the sirs, the carriers, and the resource units is established.
In a possible embodiment, the establishing module 503 is configured to establish the correspondence between the signal to interference plus noise ratio, the carrier, and the resource unit, and includes:
allocating H resource units to the user equipment, and respectively calculating the signal-to-interference-and-noise ratios of the at least two carriers after allocating each resource unit to the user equipment; h is a positive integer;
and establishing the corresponding relation among the signal-to-interference-and-noise ratio, the carrier and the resource unit according to the calculation result.
In a possible implementation, the network device further includes a receiving module 504, please continue to refer to fig. 6. Since the receiving module 504 is an optional functional module, it is drawn as a dotted line in fig. 6 in order to distinguish it from a necessary functional module. A receiving module 504, configured to:
receiving search information sent by the user equipment, wherein the search information is used for indicating selectable secondary carriers capable of being allocated to the user equipment.
In a possible embodiment, the network device further comprises a determination module 505, please continue to refer to fig. 6. Here, since the determination module 505 is an optional functional module, it is drawn as a dotted line in fig. 6 in order to distinguish it from a necessary functional module. A determining module 505 for:
and determining the resource requirement information of the user equipment so as to determine the number of the auxiliary carriers required by the user equipment.
The network device may be used to perform the method provided by the embodiment shown in fig. 1, for example, the network device as described above. Therefore, for the functional modules included in the network device, and the functions that can be realized by each functional module, reference may be made to the relevant description in the embodiment shown in fig. 1, which is not repeated here.
The embodiment of the invention mainly allocates SCC for the user equipment according to the signal-to-interference-and-noise ratio, if the second signal-to-interference-and-noise ratio is larger than the first signal-to-interference-and-noise ratio, the second signal-to-interference-and-noise ratio indicates that better carrier waves can be allocated to the user equipment as auxiliary carrier waves, and the corresponding auxiliary carrier waves are allocated to the user equipment according to the signal-to-interference-and-noise ratio and the corresponding relation between the carrier waves and the resource units, so that the signal-to-interference-and-noise ratio of the system is.
In the present invention, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the described units or division of units is only one type of division of logical functions, and there may be other divisions when actually implemented, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of some interfaces, devices or units, and may be an electric or other form.
An embodiment of the present invention further provides a computer storage medium, where the computer storage medium may store a program, and when the program is executed, the program includes some or all of the steps of any of the distance measuring methods described in the above method embodiments.
The functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may be an independent physical module.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, all or part of the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device, such as a personal computer, a server, or a network device, or a processor (processor) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a Universal Serial Bus flash drive (usb flash drive), a removable hard disk, a Read Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, and an optical disk.
The above embodiments are only used to describe the technical solutions of the present invention in detail, but the above embodiments are only used to help understanding the method of the embodiments of the present invention, and should not be construed as limiting the embodiments of the present invention. Variations or substitutions that may be readily apparent to one skilled in the art are intended to be included within the scope of the embodiments of the present invention.
Claims (10)
1. A method for allocating carriers, comprising:
the network equipment calculates a first signal-to-interference-and-noise ratio and a second signal-to-interference-and-noise ratio; wherein, the first signal to interference plus noise ratio is the current signal to interference plus noise ratio of the system, and the second signal to interference plus noise ratio is: after allocating a resource unit for the user equipment, the system comprises the largest signal-to-interference-and-noise ratio of the signal-to-interference-and-noise ratios of at least two carriers; the at least two carriers comprise a primary carrier allocated to the user equipment and an optional secondary carrier capable of being allocated to the user equipment; the signal-to-interference-and-noise ratios of the at least two carriers satisfy the following formula:
1, 2, … … N, where N is the number of the at least two carriers; n is a radical of0In order to overlap the floor noise of the coverage area,
the power interference value brought by other carriers except the carrier where the user equipment is located at the time-frequency position corresponding to the allocated resource unit; p is a radical oflThe power of the ith carrier at the time-frequency position corresponding to the allocated resource unit; the ith carrier is the carrier where the user equipment is located; if the second SINR is larger than the first SINR, the network equipment corresponds to the SINR, the carrier and the resource unitAnd allocating, among the at least two carriers, carriers having a signal-to-interference-and-noise ratio greater than the first signal-to-interference-and-noise ratio, except for the primary carrier, to the user equipment as secondary carriers.
2. The method of claim 1, wherein prior to the network device computing the first and second signal-to-interference-and-noise ratios, further comprising:
and the network equipment establishes the corresponding relation among the signal-to-interference-and-noise ratio, the carrier and the resource unit.
3. The method of claim 2, wherein the network device establishing the correspondence between signal-to-interference-and-noise ratios, carriers, and resource elements comprises:
the network equipment allocates H resource units for the user equipment, and respectively calculates the signal-to-interference-and-noise ratios of the at least two carriers after allocating each resource unit for the user equipment; h is a positive integer;
and the network equipment establishes the corresponding relation among the signal-to-interference-and-noise ratio, the carrier and the resource unit according to the calculation result.
4. The method of any of claims 1-3, wherein the method further comprises:
the network equipment receives search information sent by the user equipment, wherein the search information is used for indicating selectable secondary carriers which can be allocated to the user equipment.
5. The method of any of claims 1-3, wherein the method further comprises:
the network equipment determines resource requirement information of the user equipment so as to determine the number of the auxiliary carriers required by the user equipment.
6. A network device, comprising:
the calculation module is used for calculating a first signal to interference plus noise ratio and a second signal to interference plus noise ratio; wherein, the first signal to interference plus noise ratio is the current signal to interference plus noise ratio of the system, and the second signal to interference plus noise ratio is: after allocating a resource unit for the user equipment, the system comprises the largest signal-to-interference-and-noise ratio of the signal-to-interference-and-noise ratios of at least two carriers; the at least two carriers comprise a primary carrier allocated to the user equipment and an optional secondary carrier capable of being allocated to the user equipment; the signal-to-interference-and-noise ratios of the at least two carriers satisfy the following formula:
1, 2, … … N, where N is the number of the at least two carriers; n is a radical of0In order to overlap the floor noise of the coverage area,
the power interference value brought by other carriers except the carrier where the user equipment is located at the time-frequency position corresponding to the allocated resource unit; p is a radical oflThe power of the ith carrier at the time-frequency position corresponding to the allocated resource unit; the ith carrier is the carrier where the user equipment is located;
and an allocating module, configured to allocate, according to a correspondence between the sir and the resource unit, carriers, of the at least two carriers, in which the sirs other than the primary carrier are larger than the first sir, to the user equipment as secondary carriers if the second sir is larger than the first sir.
7. The network device of claim 6, wherein the network device further comprises an establishment module to:
before the calculation module calculates the first SINR and the second SINR, establishing the corresponding relationship among the SINR, the carrier and the resource units.
8. The network device of claim 7, wherein the establishment module is to:
allocating H resource units to the user equipment, and respectively calculating the signal-to-interference-and-noise ratios of the at least two carriers after allocating each resource unit to the user equipment; h is a positive integer;
and establishing the corresponding relation among the signal-to-interference-and-noise ratio, the carrier and the resource unit according to the calculation result.
9. The network device of any of claims 6-8, wherein the network device further comprises a receiving module to:
receiving search information sent by the user equipment, wherein the search information is used for indicating selectable secondary carriers capable of being allocated to the user equipment.
10. The network device of any of claims 6-8, wherein the network device further comprises a determination module to:
and determining the resource requirement information of the user equipment so as to determine the number of the auxiliary carriers required by the user equipment.
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| CN1481633A (en) * | 2000-12-15 | 2004-03-10 | ˹���ķ��Ź�˾ | Multi-carrier communications with group-based subcarrier allocation |
| CN103036842A (en) * | 2000-12-15 | 2013-04-10 | 昂达博思公司 | Method and device for selecting subcarriers in a system using OFDMA |
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| CN104159303B (en) * | 2013-05-15 | 2019-06-21 | 中兴通讯股份有限公司 | Member carrier distribution method and device |
| KR20150023109A (en) * | 2013-08-22 | 2015-03-05 | 한국전자통신연구원 | Method and apparatus for controlling interference based on carrier aggregation for small base station |
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| CN1481633A (en) * | 2000-12-15 | 2004-03-10 | ˹���ķ��Ź�˾ | Multi-carrier communications with group-based subcarrier allocation |
| CN103036842A (en) * | 2000-12-15 | 2013-04-10 | 昂达博思公司 | Method and device for selecting subcarriers in a system using OFDMA |
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