WO2010025580A1 - 无线接入网络中请求和处理上行资源分配的方法和装置 - Google Patents
无线接入网络中请求和处理上行资源分配的方法和装置 Download PDFInfo
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- WO2010025580A1 WO2010025580A1 PCT/CN2008/001567 CN2008001567W WO2010025580A1 WO 2010025580 A1 WO2010025580 A1 WO 2010025580A1 CN 2008001567 W CN2008001567 W CN 2008001567W WO 2010025580 A1 WO2010025580 A1 WO 2010025580A1
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- resource
- uplink
- service
- indication information
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- 238000000034 method Methods 0.000 title claims abstract description 55
- 238000013468 resource allocation Methods 0.000 title claims abstract description 33
- 230000005540 biological transmission Effects 0.000 claims abstract description 228
- 230000000737 periodic effect Effects 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 6
- 230000004044 response Effects 0.000 abstract description 4
- 230000002860 competitive effect Effects 0.000 description 9
- 230000036963 noncompetitive effect Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 239000002699 waste material Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000007726 management method Methods 0.000 description 4
- 230000011664 signaling Effects 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 230000001934 delay Effects 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 101150071746 Pbsn gene Proteins 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
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- 230000000670 limiting effect Effects 0.000 description 2
- 101100172132 Mus musculus Eif3a gene Proteins 0.000 description 1
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Classifications
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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
- H04W72/0457—Variable allocation of band or rate
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
- H04W72/232—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal the control data signalling from the physical layer, e.g. DCI signalling
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
Definitions
- the present invention relates to a radio access network, and more particularly to a method and apparatus for requesting and processing uplink resource allocation in a radio access network. Background technique
- the IEEE 802.16m protocol requires further shortening of service delays based on the existing IEEE 802.16e protocol to better support time-sensitive services such as voice services, real-time games, real-time video streaming services or high-priority e-commerce. These delay sensitive services often require a delay of less than 10 ms between the base station and the mobile terminal on the uplink and downlink.
- the IEEE 802.16e protocol has several existing bandwidth request and allocation mechanisms for supporting real-time services, namely Unsolicited Grant Service (UGS) and Real-Time Polling Service (RTPS). And enhanced real-time polling service ( Extended rtPS , ertPS ).
- UMS Unsolicited Grant Service
- RTPS Real-Time Polling Service
- Extended rtPS Extended rtPS , ertPS
- the resource allocation mode of the UGS technology is as shown in FIG. 1 , in which no mobile terminal is required to perform any resource request, and after a service is established and terminated, the base station automatically performs this service for the mobile terminal after each allocation period starts. Allocate resources of a predetermined size, such as time-frequency resource blocks. For the service that has been established and not terminated, the voice telephony service is taken as an example. If neither party talks during the call, there is no uplink service data between the mobile terminal used by either party and the subordinate base station. The transmission, but the business is still in an active state and is granted resources, that is, if one party starts speaking, the other party will immediately hear what he or she said. The voice telephony service is terminated until one party hangs up or a serious signal problem or network failure occurs.
- the foregoing resource allocation manner of the UGS can be understood as one, several or In the uplink subframe, a time-frequency region is allocated for the service of the mobile terminal, and the mobile terminal sends uplink service data belonging to the service.
- UGS can meet the requirements of real-time service for delay. However, since a service does not have uplink service data to be transmitted at any time after the establishment, this method similar to static allocation undoubtedly causes comparison. Serious waste of resources.
- rtPS allows a base station to allocate an indefinite resource for a service of a mobile terminal, as shown in Figure 2.
- the base station allocates resources for transmitting a bandwidth request message (BR), and resources for transmitting uplink service data, for a service of the mobile terminal after the start of each allocation period.
- BR bandwidth request message
- uplink transmission resource the sum of the two resources is referred to as an uplink transmission resource.
- the mobile terminal can generate a BR message according to the total amount of uplink service data to be transmitted that is actually buffered by the mobile terminal, and report the BR message to the base station. According to the received BR message, the base station can dynamically adjust the current allocation to the mobile terminal.
- the uplink transmission resource of the item service is actually dynamically adjusting the size of the part in which the uplink service data is transmitted.
- rtPS optimizes the use of resources on the basis of UGS.
- rtPS requires the mobile terminal to frequently send BR messages (6 bytes in size) to the base station, it causes a larger signaling overhead.
- the ertPS scheme based on periodic uplink transmission resource allocation shown in FIG. 3a enables the base station to allocate resources to the mobile terminal without requesting the mobile terminal as in the UGS, thereby satisfying the transmission delay. Requirements.
- the mobile terminal is allowed to make the base station adjust the size of its periodically allocated resources by request, for example, writing its desired new resource allocation amount to the grant management manager following the general MAC frame header (Generic MAC)
- the extension in the GMSH Grant Management Subheader
- BR Base station
- BR Bandwidth Request
- the base station does not change the new request from the corresponding mobile terminal before requesting to change the resource size.
- the mobile terminal requests the base station to adjust the resource amount to "zero" to temporarily release the resources occupied by the service. Then, the business entered a silent state. Thereafter, the base station may neither allocate resources for uplink traffic data nor allocate resources for BR messages, or allocate resources only for BR messages.
- the resource allocated to the BR message is dedicated to the service of the mobile terminal, that is, non-contention resources. If the base station allocates the non-competitive resource for the BR message, the mobile terminal generates a BR message and sends the non-competitive resource to the mobile terminal when the uplink service data of the service to be transmitted again occurs.
- the base station informs the base station that the service has ended the silent state, and the base station should continue to allocate uplink transmission resources to it periodically.
- the mobile terminal can adopt the following methods:
- the so-called competitive resources are those that are not clearly identifiable, and can be occupied by multiple mobile terminals. Since wireless transmission resources are invaluable, when competing for the right to use competing resources, each mobile terminal generally does not use a complete data packet to perform the competition as in the wired communication protocol CSMA/CD. It is to use some information such as CDMA code that has the role of identity or even service identification and is small in size.
- the mobile terminal requests an uplink transmission resource from the base station via the BR message V, and correspondingly, the base station allocates a resource block w for transmitting the uplink service data x to be transmitted and the next BR message y.
- the service data of the to-be-transmitted data buffer (buffer) at the mobile terminal is not yet to be transmitted. Therefore, in y, the resource requested by the mobile terminal is 0.
- the voice call service Take the voice call service as an example. The service enters on the uplink. A typical condition for a silent state is that the user of the mobile terminal is not speaking.
- the service of the mobile terminal enters a silent state, and the base station no longer allocates uplink service data transmission resources for the service or allocates non-competitive resources for the transmission of the BR message.
- the base station no longer allocates uplink service data transmission resources for the service or allocates non-competitive resources for the transmission of the BR message.
- the mobile terminal transmits the content on the pre-assigned ranging channel m for contention.
- the CDMA code n used by the competing resources to request the right to use competitive resources. Since the content of competitive resources is obviously insufficient compared with the amount of information requested by a large number of mobile terminal services, it is likely that multiple mobile terminals compete for the right to use competitive resources at the same time.
- the mobile terminal succeeds in obtaining the right to use the competitive resource, and the base station allocates the resource o for transmitting the BR message, and the mobile terminal correspondingly sets the BR message p, It is sent to the base station, and finally the resource block q is obtained.
- the base station will allocate a resource block r' of the default size to the mobile terminal for transmitting the new data to be transmitted s, and a new BR message t.
- the CQICH is a channel used by the mobile terminal to report information such as the reception quality of the downlink signal to the base station.
- the base station receives the identification code sent by the mobile terminal on such a channel, it re-allocates the uplink transmission resource.
- a quantitative uplink transmission resource is allocated for the service in each allocation period. Although the delay requirement of the service is met, the effective utilization of the resource is neglected, regardless of whether the service has uplink service data to be transmitted in a period of time. Both occupy a certain amount of resources, resulting in a very low resource utilization rate of the system as a whole.
- the mobile terminal Although the size of the allocated resources can be dynamically adjusted and the waste of resources is reduced compared with the UGS, the mobile terminal must send a BR message in each allocation period, and the frequent transmission of the BR message causes a high signaling overhead. This is obviously not good for improving resource utilization.
- the present invention proposes a new method for uplink resource allocation in a radio access network, so that the mobile terminal triggers using non-competitive resources that are closely spaced in the time domain. Or adjusting the redistribution of uplink resources, thereby effectively implementing the fast response of the base station to the resource allocation request of the mobile terminal, and satisfying the requirement of the delay sensitive service.
- a method for use in a base station of a radio access network a method for processing an uplink resource allocation, where the method includes the following steps: allocating one or more uplink resource request indication information and a sending resource for sending, by the mobile terminal, corresponding uplink resource request indication information, for one service of a mobile terminal, where Different services of the mobile terminal and different services of the same mobile terminal, the uplink resource indication information and/or the corresponding transmission resource allocated by the base station are different, and the allocated transmission resource causes the mobile terminal to send uplink service data when And transmitting, by the base station, the at least one allocated uplink resource request indication information to the base station, and the receiving, by the mobile terminal, the at least one uplink resource sent by using the corresponding sending resource by the mobile terminal.
- Requesting indication information for requesting allocation of an uplink transmission resource to the base station responding to the request of the mobile terminal.
- a method for requesting allocation of an uplink transmission resource to a base station in a mobile terminal includes the steps of: obtaining one of the service allocations of the mobile terminal for the mobile terminal a plurality of uplink resource request indication information and a transmission resource for the mobile terminal to send the corresponding uplink resource request indication information, where the allocated transmission resource enables the mobile terminal to allow the service when the uplink service data needs to be sent Transmitting at least one of the allocated uplink resource request indication information to the base station within a maximum time delay; further comprising: determining whether it is required to request the base station to allocate an uplink transmission resource for the service; if requesting to the base station And allocating the allocated at least one uplink resource request indication information to the base station by using the corresponding sending resource.
- a processing apparatus for processing an uplink resource allocation in a base station of a radio access network includes: a first allocating means, configured to allocate a service for a mobile terminal Or a plurality of uplink resource request indication information and a transmission resource for the mobile terminal to send the corresponding uplink resource request indication information, where the uplink resource indication allocated by the base station is different for the service of the mobile terminal and the different service of the same mobile terminal.
- the information and/or the corresponding transmission resource are different, and the allocated transmission resource enables the mobile terminal to send at least one allocated location to the base station within a maximum delay allowed by the service when the uplink service data needs to be sent.
- the receiving device is configured to receive at least one of the uplink resources sent by the mobile terminal by using the corresponding sending resource.
- the indication information is used to request the base station to allocate an uplink transmission resource; and the response device is configured to respond to the request of the mobile terminal.
- a first requesting apparatus for requesting allocation of an uplink transmission resource to a base station in a mobile terminal
- the method includes: obtaining means for obtaining the base station as the mobile terminal One or more uplink resource request indication information allocated by one service and a transmission resource for the mobile terminal to send corresponding uplink resource request indication information, where the allocated transmission resource causes the mobile terminal to send uplink service data when And transmitting, by the determining, the at least one of the allocated uplink resource request indication information to the base station, where the maximum delay allowed by the service is further included:
- the second requesting device is configured to: if it is required to allocate the uplink transmission resource to the base station, send the allocated at least one uplink resource request indication information to the base station by using the corresponding sending resource.
- the method and the device provided by the invention can effectively meet the delay requirement of the delay sensitive service.
- the invention also helps to improve the utilization of resources in the system, and the system complexity is low.
- Figure 1 shows the uplink resource allocation method in UGS technology
- FIG. 2 shows an uplink resource request and allocation manner in the rtPS technology
- FIG. 4 illustrates a flowchart of a system method for requesting and allocating an uplink transmission resource according to an embodiment of the present invention
- FIG. 5 illustrates an uplink transmission resource request and allocation manner according to an embodiment of the present invention
- FIG. 6 illustrates a transmission resource allocation manner according to an embodiment of the present invention
- FIG. 7 is a block diagram showing a first processing apparatus for processing an uplink transmission resource allocation in a base station of a radio access network according to an embodiment of the present invention
- Figure 8 is a block diagram of a first requesting device for requesting uplink transmission resources in a mobile terminal in accordance with an embodiment of the present invention.
- the technical solution of the present invention described hereinafter is applicable not only to non-periodic real-time services, but also to periodic real-time services and even non-real-time services.
- the unique resource request mode provided by the present invention can be used not only at the time when the service leaves the silent state, but also at other times, that is, the uplink request indication information that can be provided by the present invention. Instead of the existing BR message, the system still works normally and is superior to the prior art.
- such a service can be regarded as a process having an on-off state, wherein, in an open state, a corresponding service in the mobile terminal generates service data, and the mobile terminal caches and requests the service.
- the resource is sent to the base station, and in the off state, the mobile terminal does not need to send data to the base station, as described above, in this state, the base station actively allocates resources for the uplink service data or the BR message of the service.
- an important task of the present invention is to enable the mobile terminal to request uplink transmission resources to the base station as soon as possible, and the base station can also make a positive response as soon as possible.
- FIG. 4 shows a flowchart of a system method according to an embodiment of the present invention, which can be understood by those skilled in the art in conjunction with the following description, wherein the execution period of step S1 and other steps may be different.
- FIG. 5 is an uplink transmission resource according to an embodiment of the present invention. Schematic diagram of the source request and allocation process. The method provided by the present invention will be described in detail below with reference to FIG. 5 and with reference to FIG.
- step S1 the base station 10 allocates uplink resource request indication information and corresponding transmission resources for a service of the mobile terminal 20, such as a voice call service.
- the step is generally performed after the base station 10 receives the uplink service setup request of the mobile terminal 20.
- the allocated uplink resource request indication information may be a CDMA code, and may be a PRBS (pseudo-random) similar to the ranging code generator at the base station 10.
- the second-order ⁇ 1 J , pseudo-random binary sequence ) generator is generated.
- the base station 10 allocates three different CDMA codes for the service of the mobile terminal 20, which are denoted as I, II, and III.
- the base station 10 also needs to allocate a transmission resource, such as a time-frequency resource, for the mobile terminal 20 to transmit the three CDMA codes, as shown in FIG. 6, where a transmission resource composed of one slot and one subcarrier is referred to as a resource.
- a transmission resource composed of one slot and one subcarrier
- FIG. 6 shows 12 resource points P1-P12.
- these resources may all be used as competitive resources, but in this example, P11 and P12 are opened as non-competitive resources, that is, P11 and The allocation of P12 is not based on the contention of the mobile terminal, but is allocated by the base station 10 to one or more services in accordance with the corresponding uplink resource request indication information at a certain time after the establishment or establishment of the service.
- the matching rule of the transmission resource and the CDMA code has the following basics: 1.
- the number of CDMA codes using the same resource point generally does not exceed the cross-correlation factor (cross-correlation factor)
- cross-correlation factor the cross-correlation factor
- CDMA code, time slot, subcarrier if any one of them changes, the combination is different from the original combination.
- the services of different mobile terminals are naturally different, so this is obviously applicable to the service differentiation of different mobile terminals.
- CDMA codes can belong to the same service of one mobile terminal, different services belonging to the same mobile terminal, and even services belonging to different mobile terminals.
- CDMA codes allocated in the same resource point should be mutually distinguished, and also in order to achieve at least one of code division, time division, and frequency division.
- the same CDMA code can form a plurality of so-called information resource combinations with a plurality of different resource points, wherein the information refers to the uplink resource request indication information, that is, the CDMA code, and the resource refers to The time-frequency resource point in this example.
- the resulting different combinations are either time-divisionally (using the same subcarriers for different time slots) or frequency division (using the same time slot for different subcarriers) or by time division Frequency division method (occupying different subcarriers and using different time slots).
- the specific situation can be determined by those skilled in the art without creative labor according to the actual resource adequacy according to the teachings of the present specification.
- These different combinations can be assigned to different services or to the same service for requesting different uplink transmission resources.
- the transmission resources of codes I and II are resource points P11
- the transmission resources of code III are resource points P12. It can be seen that, in this example, codes I and II share the same resource point, and the corresponding information resource combinations are distinguished by CDMA codes, and the information resource combinations of codes I and II are combined with the codes III and P12. Resource combinations are distinguished by code division and time division. This results in three different combinations of information resources corresponding to the same service.
- the P 1 -P 10 shown in Figure 6 is still used as a competing resource for traditional in itial ranging, handover ranging, period '
- the base station 10 can broadcast the attributes of the respective resource points, that is, the transmission resources of the uplink resource request indication information referred to in the present invention, to the respective mobile terminals through the UL-MAP in the frame header, or The traditional P1-P10 shown in Figure 6 Competitive resources.
- the following description of P11 and P12 may be included in the UL-MAP information: location, structure, number, and the like.
- the mobile terminal 20 preferably stores the allocation result broadcast by the base station 10, and performs an operation of requesting an uplink transmission resource based on the previous allocation result until the next new allocation comes.
- the base station 10 may separately generate a control message carrying the CDMA code allocated for the mobile terminal 20 and the transmission resource for the mobile terminal 20 to transmit the CDMA code.
- the non-competitive resource points P11 and P12 occupy the same subcarrier, and according to the UL-MAP information, which subcarriers P11 and P12 use are known to the mobile terminal 20, and the mobile terminal 20 only needs to know at P11 and Correspondence between two time slots occupied by P12 and each CDMA code. Therefore, in this control message, the base station 10 only needs to specify the identification information of the time slot corresponding to each CDMA code.
- S1 in Fig. 4 preferably occurs before the respective events shown in Fig. 5.
- FIG. 5 S1 in Fig. 4 preferably occurs before the respective events shown in Fig. 5.
- the voice call service of the mobile terminal 20 requests the base station 10 to allocate resources (in the open state) several times before entering the silent state of the figure, as shown in the figure, the uplink service data to be transmitted is shown once. Sub-division and eventually zero. Thus, in the BR message transmitted for the third time, the requested resource amount is 0.
- the mobile terminal 10 enters a silent state after the service data in the cache is zero and remains for a period of time (e.g., several frames long) before determining that the service has no data to be transmitted temporarily.
- the service Since then, the service enters a silent period. At some time thereafter, the user of the mobile terminal 20 resumes speaking to the communication partner. Therefore, the mobile terminal 20 has a new uplink service data to be transmitted in the cache, as shown in the figure. u in 5.
- step S2 the mobile terminal 20 determines that it is required to request allocation of uplink transmission resources. Therefore, in step S3, one or more CDMA codes allocated by the base station 10 are transmitted to the base station 10 on the corresponding transmission resource to request the base station. 10 Restart the allocation of uplink transmission resources for this service.
- step S3 The following is a detailed description of the various possible scenarios of step S3:
- Example 1 is the simplest and basic example, in which the base station 10 and the mobile terminal 20 do not agree between any CDMA code and uplink transmission resource demand, or between the information resource combination and the uplink transmission resource demand. Correspondence relationship.
- the CDMA code transmitted by the mobile terminal 20 on the transmission resource only indicates that it has a new uplink service data to be transmitted, and the base station 10 is required to allocate an uplink transmission resource for the service, and the specific allocation of the resource is determined by the base station 10.
- the information resource combination of a service allocated to a mobile terminal is preferably unique.
- the base station receives a specific CDMA code sent by the mobile terminal using a specific time-frequency resource, that is, knowing that the mobile terminal is requesting allocation of resources, the base station immediately performs corresponding allocation.
- Example 2 The base station 10 and the mobile terminal 20 agree on the uplink transmission resource demand corresponding to different CDMA codes.
- the base station 10 allocates a plurality of CDMA codes, i.e., I, III, and III for a service and separately allocates transmission resources.
- the base station 10 only cares which CDMA code is sent by the mobile terminal, and is not very concerned that the CDMA code is transmitted using that resource point. In other words, although the base station 10 allocates multiple transmission resources for one CDMA code. However, regardless of which of the transmission resources the mobile terminal 20 uses to transmit the CDMA code, as feedback, in the next step S4, the amount of uplink transmission resources allocated by the base station 10 for the service is the same. In view of this, in order to save time and frequency resources, the base station 10 preferably allocates only one transmission resource per CDMA code.
- different CDMA codes such as I, II, and ⁇ , preferably correspond to different amounts of uplink transmission resources, which may be communicated to the mobile terminal by the base station 10 when transmitting the management message.
- the base station 10 allocates a plurality of CDMA codes (uplink resource request indication information) to the mobile terminal 20 in order to enable the mobile terminal 20 to express the demand most explicitly when there is an uplink transmission resource requirement, thereby allowing the base station to 10
- the uplink transmission resources allocated thereto are only likely to be close to the requirements of the mobile terminal 20, avoiding waste.
- the data amount of u is 450, 0 bytes (4.5 kB), and the codes I, II, and III correspond to the resource requirements of lkB, 2kB, and 3kB, respectively, and therefore, the mobile terminal 10 preferably selects code III for transmission.
- the service is freed from the silent state, and thus, the base station 10 can periodically allocate resources for the service as shown in Fig. 3a.
- the location of the 3kB resource allocated by base station 10 is described in the UL-MAP of the header of a frame.
- mobile terminal 20 uses the corresponding resources to transmit uplink traffic data in the uplink subframe of the frame.
- the allocation period of the uplink transmission resource is five frames long, the amount of resources that the mobile terminal 20 can use for the service in each uplink subframe is 0.6 kB. Then, in the last uplink subframe of the cycle, the mobile terminal 20 sends the service data of 0.594 kB size and the BR message of size 0.006 kB to the base station 10, wherein the BR message is used to request the base station 10 to reallocate 1,512 kB.
- the BR message sent by the mobile terminal 20 can be responded to in the header portion of the next frame, after parsing the UL-MAP information therein, the mobile terminal 20 finds its available uplink transmission resource, and The remaining data to be transmitted is transmitted to the base station frame by frame. Finally, in the last uplink subframe of the cycle, a new BR message is sent to the base station 10 along with the last part of the uplink traffic. The new BR message indicates that the uplink resource requirement of the mobile terminal 20 for this service becomes 0. Since then, the business has entered a state of uncertainty.
- Example 3 The base station 10 and the mobile terminal 20 agree on a correspondence between different information resource combinations and uplink resource requirements.
- the base station 10 allocates codes I, II, and III for a service of the mobile terminal 20.
- the transmission resources of the code I are P11 and P12
- the transmission resource of the code II is P11
- the transmission resource of the code III is P12.
- code II and code III each have only one type of transmission resource, there are two types of code I.
- transmission resource is used by the mobile terminal 20 to transmit the code I to the base station 10
- Table 1 the information resource combination and the corresponding uplink transmission resource demand have the corresponding relationship shown in Table 1:
- Table 1 Correspondence between information resource combination and uplink transmission resource demand
- the mobile terminal selects to transmit the code III in P12, thereby obtaining the maximum amount of resources allocated by the base station 10.
- the insufficient portion is further obtained by sending a BR message.
- the BR message generated for the remaining service data that has not been transmitted in 5kB can also be replaced by a CDMA code transmitted on a specific transmission resource, since the amount of remaining service data is lkB, therefore, in this allocation
- the mobile terminal 20 transmits the code I on P11, so that the base station 10 will subsequently allocate an uplink transmission resource of the amount lkB.
- Example 4 The base station 10 and the mobile terminal 20 agree that a combination of multiple CDMA codes (combination of uplink resource allocation request information, referred to as information combination) corresponds to a specific uplink transmission resource requirement, and preferably, the method can be compared with an example. 2 or the method in Example 3 is used in combination, and the case of combining with Example 2 is as shown in Table 2: Table 2: Correspondence between information combination and uplink transmission resource demand
- the repeated transmission of the same CDMA code can also constitute a combination of information.
- the transmission timing of using the uplink resource request indication information described above is a specific time period in which a service is left by the silent state, this is merely an example and does not constitute any limitation on the scope of protection of the present invention.
- the uplink resource request information and the transmission resource provided by the present invention can also be used when the service is in an "on" state.
- the CDMA code replaces the BR message, and the combination of the information resources formed by the transmission resource can be substantially to the base station. Describe the amount of uplink transmission resources that the mobile terminal wishes to obtain. Compared with the BR message, the method provided by the invention has less delay for the service, and the signaling overhead is less, which is beneficial to save system resources.
- the present invention has been described above from the perspective of a method, and the device block diagram is further referred to below. Figure 5 and Figure 6 are introduced from the perspective of the device.
- the illustrated first processing device 100 includes: a distribution device 1000, a receiving device 1001, and a second processing device 1002, and the second processing device 1002 further includes a first determining device 10020, a third processing device 10021, a second determining device 10022, The fourth processing device 10023, the third determining device 10024, and the third processing device 10025.
- FIG 8 is a block diagram of a first requesting device for requesting uplink transmission resources in a mobile terminal in accordance with an embodiment of the present invention.
- the illustrated first requesting device 200 includes an obtaining device 2000, a determining device 2001 and a second requesting device 2002, wherein the second requesting device 2002 further comprises: a first selecting device 20020, a first transmitting device 20021, a second selecting device 20022 The second transmitting device 20023, the third selecting device 20024, and the third transmitting device 20025.
- the allocating device 1000 at the base station 10 allocates uplink resource request indication information and corresponding transmission resources for a service of the mobile terminal 20, such as a voice call service.
- the allocation operation may be performed after the base station 10 receives the uplink service setup request of the mobile terminal 20.
- the allocated uplink resource request indication information may be a CDMA code, and may be a PRBS similar to the ranging code generator at the base station 10.
- a pseudo-random binary sequence generator is generated.
- the distribution device 2000 allocates three different CDMA codes for the service of the mobile terminal 20, which are denoted as I, II, and III.
- the allocating device 1000 at the base station 10 also needs to allocate a transmission resource, such as a time-frequency resource, for the mobile terminal 20 to transmit the three CDMA codes, as shown in FIG. 6, where a time slot and a sub-carrier are configured to be transmitted.
- the resource is called a resource point, and Figure 6 shows 12 resource points P1-P12.
- these resources may all be used as competitive resources, but in this example, P11 and P12 are opened as non-competitive resources, that is, P11 and The allocation of P12 is not based on the contention of the mobile terminal, but is allocated by the base station 10 to one or more services in accordance with the corresponding uplink resource request indication information at a certain time after the establishment or establishment of the service.
- the matching rule of the transmission resource and the CDMA code has the following basics: 1.
- the number of CDMA codes using the same resource point generally does not exceed the cross-correlation factor (cross-correlation factor)
- cross-correlation factor the cross-correlation factor
- CDMA code, time slot, subcarrier if any one of them changes, the combination is different from the original combination.
- the combination of CDMA code, time slot and subcarrier allocated for different services of the same mobile terminal If one of the code division, the time division, and the frequency division is performed, these combinations can well identify the corresponding service, thereby facilitating the accuracy of the uplink transmission resource request.
- the services of different mobile terminals are naturally different, so this also obviously applies to the service differentiation of different mobile terminals.
- a plurality of different CDMA codes share the same resource point, that is, a simple code division method is adopted. It is easy to understand that these different CDMA codes can belong to the same service of one mobile terminal, different services belonging to the same mobile terminal, and even services belonging to different mobile terminals. However, those skilled in the art understand that in order to avoid interference, the CDMA codes allocated in the same resource point should be mutually differentiated, and also to achieve at least one of code division, time division, and frequency division.
- the same CDMA code can form a plurality of so-called signals and resource combinations with a plurality of different resource points, wherein the information refers to the uplink resource request indication information, that is, the CDMA code, and the resource is Refers to the time-frequency resource point in this example.
- the resulting different combinations are either time-divisionally (using the same subcarriers for different time slots) or frequency division (using the same time slot for different subcarriers) or by time division Frequency division method (occupying different subcarriers and using different time slots).
- the specific situation can be determined by those skilled in the art without creative labor according to the actual resource adequacy according to the teachings of the present specification.
- the transmission resources of codes I and II are resource points P11
- the transmission resources of code III are resource points P12. It can be seen that, in this example, codes I and II share the same resource point, and the corresponding information resource combinations are distinguished by CDMA codes, and the information resource combinations of codes I and II are combined with the codes III and P12. Resource combinations are distinguished by code division and time division. This results in three different combinations of information resources corresponding to the same service.
- P 1 -P 10 shown in Figure 6 is still used as a competing resource for traditional initial ranging, handover: handover ranging, periodic '1' periodic ranging and based on Competing bandwidth request.
- the allocating device 1000 at the base station 10 can broadcast the attributes of the respective resource points to the respective mobile terminals through the UL-MAP in the frame header, that is, the sending of the uplink resource request indication information according to the present invention.
- the following description of P11 and P12 may be included in the UL-MAP information: location, structure, number, and the like.
- the mobile terminal 20 preferably stores the allocation result broadcast by the base station 10, and performs an operation of requesting an uplink transmission resource based on the previous allocation result until the next new allocation comes.
- the distribution device 1000 at the base station 10 additionally generates a control message carrying the CDMA code allocated for the mobile terminal 20, and the transmission resource for the mobile terminal 20 to transmit the CDMA code.
- the mobile terminal 20 Since the non-competitive resource points P11 and P12 occupy the same subcarrier, and according to the UL-MAP information, which subcarriers P11 and P12 use are known to the mobile terminal 20, the mobile terminal 20 only needs to know at P11. And the correspondence between the two time slots occupied by P12 and each CDMA code. Therefore, in this control message, the distribution device 1000 only needs to specify the identification information of the time slot corresponding to each CDMA code.
- the corresponding information sent by the distribution device 1000 is obtained by the obtaining device 2000 at the mobile terminal 20 and supplied to the corresponding downstream device such as the first-third selection device.
- the voice call service of the mobile terminal 20 requests the base station 10 to allocate resources several times (in the open state) before entering the silent state shown in the figure, as shown in the figure, the uplink service data to be transmitted once. Sub-division and eventually zero.
- the requested resource amount is 0.
- the mobile terminal 10 enters a silent state after the service data in the cache is zero and remains for a period of time (eg, several frames long), and then it is determined that the service has no data to be transmitted temporarily.
- the service Since then, the service enters a silent period. At some time thereafter, the user of the mobile terminal 20 resumes speaking to the communication partner. Therefore, the mobile terminal 20 has a new uplink service data to be transmitted in the cache, as shown in the figure. u in 5.
- the determining device 2001 at the mobile terminal 20 determines that it is required to request allocation of uplink transmission resources. Therefore, the mobile terminal 20 needs to transmit one or more CDMA codes allocated by the base station 10 to the base station 10 on the corresponding transmission resource to request the base station. 10 Restart the allocation of uplink transmission resources for this service.
- Example 1 is the simplest and basic example in which the base station 10 does not agree with any of the CDMA codes and uplink transmission resource requirements, or information resource combinations and uplinks, through its distribution device 1000 or in advance with the mobile terminal 20.
- the CDMA code transmitted by the mobile terminal 20 on the transmission resource only indicates that it has a new uplink service data to be transmitted, and the base station 10 is required to allocate an uplink transmission resource for the service, and the specific allocation of the resource is determined by the base station 10.
- the second processing device 1002 can be simplified to a simple determining device.
- the second requesting means can be simplified to a simple transmitting means for performing transmission of any of the assigned CDMA codes based on the judging means 2001 obtaining an affirmative decision result.
- the amount of uplink transmission resource allocation determined by the second processing device 1002 equivalent to a determining device may be expressed by:
- the weighting coefficients and the person skilled in the art understands that the idea in the formula (1) can also be applied to the following various situations.
- the information resource combination of a service allocated to a mobile terminal is preferably unique.
- the base station receives a specific CDMA code sent by the mobile terminal using a specific time-frequency resource, that is, knowing that the mobile terminal is requesting allocation of resources, the base station immediately performs corresponding allocation.
- Example 2 The base station 10 and the mobile terminal 20 have agreed on the uplink transmission resource demand corresponding to different CDMA codes by the distribution device 1000.
- the distribution device 1000 allocates a plurality of CDMA codes, i.e., I, II, III, for a service and allocates the transmission resources separately.
- the first determining device 10020 and the third processing device 10021 at the base station 10, the first selecting device 20020 and the first transmitting device 20021 at the mobile terminal 20 are used in the case of Example 2, and those skilled in the art understand that if the base station 10 and each The mobile terminal only relies on the example 2 to implement the present invention, and the second processing device 1002 and the other child devices in the second requesting device 2002 are saveable.
- the first, second, and third determining devices may be implemented by one determining device, and the third, fourth, and fifth processing devices may be implemented by one processing device.
- the first, second and third selection means can be implemented by a selection means, and the first, second and third transmission means are similar.
- the second processing device 1002 at the base station 10 only cares which CDMA code the mobile terminal sent, and is not very concerned that the CDMA code is transmitted using that resource point.
- the base station 10 is a CDMA.
- the code allocates a plurality of transmission resources, but the base station 10 performs no matter which of the transmission resources the mobile terminal 20 uses to transmit the CDMA code.
- the amount of uplink transmission resources allocated for feedback for this service is the same.
- the allocating device 1000 at the base station 10 preferably allocates only one transmission resource per CDMA code.
- different CDMA codes such as I, II, and III, preferably correspond to different amounts of uplink transmission resources, which may be communicated to the mobile terminal by the distribution device 1000 when transmitting the management message.
- the base station 10 allocates a plurality of CDMA codes (uplink resource request indication information) to the mobile terminal 20 in order to enable the mobile terminal 20 to express the demand most explicitly when there is an uplink transmission resource requirement, thereby allowing the base station to 10
- the uplink transmission resources allocated thereto are only likely to be close to the requirements of the mobile terminal 20, avoiding waste.
- the data amount of u is 450, 0 bytes (4.5 kB), and the codes I, II, and III correspond to the resource requirements of lkB, 2kB, and 3kB, respectively, and therefore, the first selection means 20020 at the mobile terminal 10.
- the code is selected for transmission, the service is released from the silent state, and the code III is received by the receiving device 1001 and transmitted to the first determining device 10020. Therefore, the first determining device 10020 at the base station 10 can determine its resource requirement according to the correspondence between the received CDMA code and the pre-stored codeword and the resource demand, and instruct the third processing device 10021 to be like FIG. 3a. The manner shown periodically allocates resources for the service.
- the location of the 3kB resource allocated by the third processing device 10021 of the base station 10 is described in the UL-MAP of the header of one frame.
- the BR message sent by the mobile terminal 20 can be responded to in the header portion of the next frame, and after the UL-MAP information is parsed therein, the mobile terminal 20 Find the available uplink transmission resources, and send the remaining data to be transmitted to the base station frame by frame. Finally, in the last uplink subframe of the cycle, send a new BR message along with the last part of the uplink service data. Base station 10. The new BR message indicates that the uplink resource requirement of the mobile terminal 20 for this service becomes 0. Since then, the business has entered a state of uncertainty.
- Example 3 The base station 10 and the mobile terminal 20 have agreed on the correspondence between the different information resource combinations and the uplink resource demand through the distribution device 1000. For better explanation, a more complicated uplink resource request indication information and a distribution method of a transmission resource are introduced as an example.
- the distribution device 1000 allocates codes I, II, and III for a service of the mobile terminal 20.
- the transmission resources of the code I are P11 and P12
- the transmission resource of the code II is P11
- the transmission resource of the code III is P12.
- code II and code III each have only one type of transmission resource, there are two types of code I.
- transmission resource is used by the mobile terminal 20 to transmit the code I to the base station 10
- the information resource combination and the corresponding uplink transmission resource demand have the corresponding relationship as shown in Table 1 above.
- the second selecting means 20022 at the mobile terminal 20 selects to transmit the code III in P12 and instructs the second transmitting means 20023 to execute, and the second determining means 10022 at the base station 10 thereby
- the resource demand amount of the service of the mobile terminal 20 can be determined, and the fourth processing device 10023 is instructed to perform the allocation, so that the mobile terminal 20 obtains the maximum resource amount allocated by the base station 10.
- the insufficient portion is further obtained by sending a BR message.
- the BR message generated for the remaining traffic data that has not been transmitted in 5kB can also be replaced by a CDMA code transmitted on a specific transmission resource, since the amount of remaining traffic data is lkB, therefore, in this
- the second transmitting device 20023 at the mobile terminal 20 transmits the code I again on P11, so that the base station 10 will subsequently allocate an uplink transmission resource of the amount lkB.
- Example 4 Base station 10 agrees with mobile terminal 20 through distribution device 1000, multiple CDMA
- the combination of codes corresponds to a specific uplink transmission resource requirement.
- the method can be used in combination with the method in Example 2 or Example 3. The situation is as shown in Table 2 above.
- the third selection device 20024 at the mobile terminal 20 can flexibly select the most appropriate one for use according to the actual amount of buffered data and instruct the third.
- the transmitting device 20025 transmits.
- the third determining means 10024 at the base station 10 determines its resource demand based on the CDMA code group sent from the third transmitting means 20025 and instructs the fifth processing means 10025 to execute.
- the repeated transmission of the same CDMA code can also constitute a combination of information.
- the transmission timing of using the uplink resource request indication information described above is a specific time period in which a service is left by the silent state, this is merely an example and does not constitute any limitation on the scope of protection of the present invention.
- the uplink resource request information and the transmission resource provided by the present invention can also be used when the service is in an "on" state.
- the CDMA code replaces the BR message, and the combination of the information resources formed by the transmission resource can be substantially to the base station. Describe the amount of uplink transmission resources that the mobile terminal wishes to obtain. Compared with the BR message, the method provided by the invention has less delay for the service, and the signaling overhead is less, which is beneficial to save system resources.
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Description
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Priority Applications (6)
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PCT/CN2008/001567 WO2010025580A1 (zh) | 2008-09-02 | 2008-09-02 | 无线接入网络中请求和处理上行资源分配的方法和装置 |
KR1020117007444A KR101461371B1 (ko) | 2008-09-02 | 2008-09-02 | 무선 액세스 네트워크에서 업링크 자원 할당을 요청 및 처리하기 위한 방법 및 장치 |
US13/061,776 US8682373B2 (en) | 2008-09-02 | 2008-09-02 | Method and apparatus for requesting and handling uplink resource allocation in wireless access network |
JP2011525386A JP2012501612A (ja) | 2008-09-02 | 2008-09-02 | 無線アクセスネットワーク内でアップリンクリソース割振りを要求して、処理するための方法および装置 |
EP08800563.2A EP2595438A4 (en) | 2008-09-02 | 2008-09-02 | METHOD AND DEVICE FOR REQUESTING AND PROCESSING UPLINK RESOURCE ALLOCATION IN A RADIO ACCESS NETWORK |
CN200880128946.9A CN102017749B (zh) | 2008-09-02 | 2008-09-02 | 无线接入网络中请求和处理上行资源分配的方法和装置 |
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PCT/CN2008/001567 WO2010025580A1 (zh) | 2008-09-02 | 2008-09-02 | 无线接入网络中请求和处理上行资源分配的方法和装置 |
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US (1) | US8682373B2 (zh) |
EP (1) | EP2595438A4 (zh) |
JP (1) | JP2012501612A (zh) |
KR (1) | KR101461371B1 (zh) |
CN (1) | CN102017749B (zh) |
WO (1) | WO2010025580A1 (zh) |
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CN102300324A (zh) * | 2010-06-23 | 2011-12-28 | 大唐移动通信设备有限公司 | 资源授权及调度信息发送方法、系统和设备 |
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CN103731809B (zh) | 2012-10-15 | 2017-12-22 | 华为技术有限公司 | 数据发送方法、接收方法及设备 |
US9204448B2 (en) | 2013-03-26 | 2015-12-01 | Empire Technology Department Llc | Predictive spectral allocation in mobile networks |
US9554293B2 (en) | 2013-06-11 | 2017-01-24 | Empire Technology Development Llc | Smooth transition between predictive and mobile-assisted spectral allocation |
EP3099091B1 (en) * | 2014-02-26 | 2024-04-10 | Huawei Technologies Co., Ltd. | Uplink resource allocation method, access terminal, and access point |
CN105307270A (zh) * | 2014-07-31 | 2016-02-03 | 中国移动通信集团公司 | 数据传输方法及系统、基站及用户设备 |
CN106465361B (zh) * | 2014-11-19 | 2020-02-21 | 华为技术有限公司 | 一种传输消息的方法、用户设备、基站和系统 |
CN107852706B (zh) | 2015-07-22 | 2022-06-10 | 瑞典爱立信有限公司 | 调度无线电资源的方法和通信节点 |
EP3404944B1 (en) * | 2016-03-22 | 2022-04-27 | Huawei Technologies Co., Ltd. | D2d communication method and device |
MX2019005046A (es) * | 2016-11-04 | 2019-06-20 | Guangdong Oppo Mobile Telecommunications Corp Ltd | Metodo de comunicacion, terminal y dispositivo de red. |
WO2019125434A1 (en) * | 2017-12-20 | 2019-06-27 | James Giles | Joint transmission commitment simulation |
CN111356244B (zh) * | 2018-12-21 | 2023-10-24 | 海能达通信股份有限公司 | 一种资源分配方法及装置 |
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- 2008-09-02 KR KR1020117007444A patent/KR101461371B1/ko active IP Right Grant
- 2008-09-02 EP EP08800563.2A patent/EP2595438A4/en not_active Withdrawn
- 2008-09-02 US US13/061,776 patent/US8682373B2/en not_active Expired - Fee Related
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KR20110063801A (ko) | 2011-06-14 |
JP2012501612A (ja) | 2012-01-19 |
KR101461371B1 (ko) | 2014-11-13 |
EP2595438A1 (en) | 2013-05-22 |
EP2595438A4 (en) | 2014-01-29 |
US20110151914A1 (en) | 2011-06-23 |
CN102017749B (zh) | 2016-05-11 |
CN102017749A (zh) | 2011-04-13 |
US8682373B2 (en) | 2014-03-25 |
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