CN101547510A - Method and system for resource allocation - Google Patents
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Abstract
The invention discloses a resource allocation method. The method comprises the following steps: an RNC allocates an SYNC_UL code for a UE and transmits the SYNC_UL code to the UE, the time-slot code channel resources used for rapid E-DCH random access and the authorized resources used for rapid E-DCH random access are allocated from an E-DCH shared resource pool for the UE, and the UE selects the resources corresponding to the UE from the resource index mapped by the time-slot code channel resources carried in the FPACH message transmitted through an FPACH according to a Node B and transmits the data through the E-DCH; and the normal E-DCH transmission is performed in the subsequent transmission according to the resources allocated according to the Node B. The invention not only ensures the utilization of the rapid E-DCH random access process to the resources, but also ensures that the resources for the rapid E-DCH random access can be used for other purposes under the condition of no use, thereby improving the service efficiency of the system resources; the invention ensures the compatibility with the prior standard to the utmost extent; and the invention can effectively reduce the collision probability during the rapid E-DCH random access, thereby ensuring the link and the system performances. The invention also discloses a resource allocation system.
Description
Technical Field
The invention relates to a resource allocation technology of a communication system, in particular to a resource allocation method and a system for realizing the random Access process of an Enhanced uplink Dedicated Channel (E-DCH) in a Time Division-Synchronous Code Division Multiple Access (TD-SCDMA) system.
Background
In the TD-SCDMA system, in the state of the existing Enhanced CELL _ FACH (Enhanced CELL _ FACH), a Physical Random Access Channel (PRACH) is used for uplink transmission, but the transmission rate is low.
In order to increase the Uplink transmission rate, a High Speed Uplink Packet Access (HSUPA) scheduling technology may be used to perform Uplink transmission, and an E-DCH for carrying High Speed Uplink data is added in the Uplink direction of the TD-SCDMA system, so that the Uplink transmission rate can be effectively increased. Before uplink transmission is performed through the E-DCH, random access and resource allocation of the E-DCH are required to be implemented.
In the prior art, the E-DCH random access can be divided into a normal E-DCH random access and a fast E-DCH random access. Compared with the normal E-DCH random access, the fast E-DCH random access can reduce the time delay of User Equipment (UE) access when the initial connection is established.
Fig. 1 is a flow chart illustrating a resource allocation method in a fast E-DCH random access process in the prior art. Referring to fig. 1, the process includes:
in this step, the SYNC _ UL signal is a sequence with a length of 128 chips (Chip), different SYNC _ UL codes correspond to a Physical Random Access Channel (PRACH) or an E-DCH Uplink Random access Control Channel (E-RUCCH) or identify fast E-DCH Random access, 8 SYNC _ UL codes are shared by a cell, and a timeslot code Channel resource allocated to the PRACH or the E-RUCCH or the SYNC _ UL code identifying the fast E-DCH Random access and corresponding to the SYNC _ UL code is broadcasted to all UEs in the cell by the network in a system broadcast message. UE knows in advance that PRACH or HSUPA or fast E-DCH random access is needed to carry out uplink transmission, and then selects corresponding pre-allocated SYNC _ UL code according to the selected PRACH or HSUPA or fast E-DCH random access. In this embodiment, the UE performs uplink transmission by using fast E-DCH random access by determining the data amount to be transmitted and the configured data amount threshold.
102, Node B receives SYNC _ UL signal, sends FPACH message to UE through FPACH, and carries indication information of fast E-DCH random access;
in this step, Node B determines and determines to execute fast E-DCH random access according to the Received SYNC _ UL code, where the FPACH message includes a Signature Reference Number (Signature Reference Number), a Relative Sub-Frame Number (Relative Sub-Frame Number), a Received Uplink Pilot Channel start position (Received starting position of the UpPCH), an RACH message transmission Power Level (Transmit Power Level Command for RACH) and Reserved bit (Reserved bits) information. The length of each piece of information in the FPACH message is shown in table 1.
TABLE 1
| Information domain | Length (bit) |
| |
3 |
| |
2 |
| Starting position of received UpPCH | 11 |
| RACH message transmit |
7 |
| Reserved bit | 9 |
In table 1, 3 bits of the signature sequence number refer to the Most Significant Bit (MSB) thereof, and 9 bits of the reserved bits refer to the Least Significant Bit (LSB) thereof.
Of the 9-bit Reserved bit (Reserved bits) information, 2 bits are used for UpPCH migration (UpPCH shifting), and the remaining 7 bits are used for transmitting a part of E-DCH resource grant information, i.e., indication information of fast E-DCH random access. The remaining E-DCH resource authorization information is notified to the UE in advance through other manners, for example, a high-level signaling of a Radio Network Controller (RNC) on the Network side may be selected for configuration, and the RNC transmits the configured E-DCH resource authorization information to the UE and the Node B through system information broadcasting or during an initial connection process.
103, the UE receives the FPACH message carrying the fast E-DCH random access indication information, acquires the authorized resource according to the received indication information and the pre-acquired E-DCH random access resource authorization information, and initiates E-DCH data transmission to the Node B.
In this step, the UE receives the FPACH message, acquires the authorized resource according to the pre-acquired E-DCH enhanced random access resource authorization information and the E-DCH enhanced random access resource authorization information carried in the indication information, implements random access, and after implementing random access, selects a rate that can be used by itself on the E-DCH and starts data transmission.
It can be seen that, in the prior art, since 8 SYNC _ UL codes of one cell need to be allocated to PRACH or E-RUCCH or identify fast E-DCH random access, when the number of users of fast E-DCH random access is large, the allocated SYNC _ UL code resources cannot meet the E-DCH random access requirements of multiple users.
Furthermore, the difference of the transmission data volume of different users is large, and only one time slot code channel resource allocated to the UE in the prior art cannot adapt to the change of the data volume, so that the FPACII cannot perform flexible scheduling according to the requirements of different users.
Moreover, in the fast E-DCH random access process, it is not indicated whether the validity period of FPACH resource allocation in time is single effective or continuously effective, and if the validity period is continuously effective, it may cause the UE to initiate uplink access without limit, resulting in a collision phenomenon in the access process, and wasting system resources.
Disclosure of Invention
In view of this, the present invention provides a resource allocation method, which can optimize fast E-DCH random access resource allocation and improve resource utilization efficiency.
The invention also provides a resource allocation system which can optimize and fast E-DCH random access resource allocation and improve the utilization efficiency of resources.
The invention provides a resource allocation method, which comprises the following steps:
a radio network controller RNC distributes an uplink synchronous SYNC _ UL code for user equipment and sends the uplink synchronous SYNC _ UL code to the user equipment so that the user equipment can initiate a fast enhanced uplink dedicated channel E-DCH random access to a base station Node B;
and the RNC distributes time slot code channel resources used for fast E-DCH random access and fast E-DCH random access authorization resources for the user equipment from the E-DCH shared resource pool and informs the user equipment, so that the user equipment selects the authorized resources corresponding to the user equipment from the resource indexes mapped by the time slot code channel resources sent by the Node B, wherein the resource indexes mapped by the time slot code channel resources sent by the Node B are sent to the Node B by the RNC in advance.
Preferably, the RNC sends a resource index table containing a plurality of time slot code channel resource mappings to the Node B in advance, and the Node B selects a resource index from the resource index table and sends the resource index to the user equipment, so that the user equipment selects a resource corresponding to the user equipment from the resource index according to the time slot code channel resource mappings sent by the Node B.
Preferably, the method further comprises: RNC distributes Midamble code for the user equipment;
the user equipment judges the time interval between the current time and the sending time of the last uplink synchronous signal, if the time interval is within the preset timing time, the rapid E-DCH random access is initiated by sending a Midamble code to the Node B, and if the time interval is greater than the preset timing time, the rapid E-DCH random access is initiated by sending a SYNC _ UL code to the base station Node B.
Preferably, the resource index table includes resource indexes of single timeslot code channel resource mapping and/or resource indexes of multiple timeslot code channel resource combination mapping.
Preferably, the fast E-DCH random access grant resource includes:
the method comprises the following steps of power resource related information PRRI, uplink enhanced control channel E-UCCH quantity indication ENI information, code resource related information CRRI, time slot resource related information TRRI and E-DCH hybrid automatic repeat request acknowledgement indication channel E-HICH indication information EI.
Preferably, the Node B sends the resource index of the time slot code channel resource mapping to the user equipment through the indication information.
Preferably, the indication information further includes resource duration indication RDI information for identifying the number of allocated transmission time intervals TTIs.
Preferably, the indication information further comprises PRRI and ENI information;
the fast E-DCH random access authorization resource comprises: CRRI, TRRI, and EI.
Preferably, the method further comprises:
after realizing random access, the user equipment sends service indication SI information to the Node B by carrying the service indication SI information in an enhanced media access control entity protocol data unit MAC-e PDU;
and the Node B allocates resources for the user equipment according to the received SI information, and the user equipment performs normal E-DCH transmission according to the allocated resources.
Preferably, the Node B allocating resources for the ue according to the received SI information includes:
if the buffer status indicated by the SI received by the Node B is 0, the Node B returns ACK (acknowledgement character) information to the UE after receiving the information correctly and recovers and distributes unused TTI resources to the user equipment;
if the buffer area state indicated by the SI received by the Node B is not 0, the Node B allocates resources for the user equipment again, transmits the allocated resources to the user equipment through an E-DCH absolute grant channel E-AGCH, and recovers the fast E-DCH random access resources allocated to the user equipment.
Preferably, the Node B does not receive the SI information, the Node B notifies the ue to transmit using resources on one or more TTIs in the remaining TTIs until the SI information is received or the maximum number of retransmissions is reached, and then the Node B recovers the resources on the remaining TTIs.
Preferably, the RNC interacts with the user equipment through a radio resource control RRC protocol, and the RNC interacts with the base station through a base station application part NBAP protocol.
A resource allocation system, the system comprising: a radio network controller RNC, a base station Node B and user equipment, wherein,
the RNC distributes an uplink synchronous SYNC _ UL code for the user equipment and sends the uplink synchronous SYNC _ UL code to the user equipment so that the user equipment can initiate the random access of a fast enhanced uplink dedicated channel E-DCH to a base station Node B;
the RNC distributes time slot code channel resources of fast E-DCH random access and fast E-DCH random access authorization resources for the user equipment from an E-DCH shared resource pool and informs the user equipment so that the user equipment can select the resources corresponding to the user equipment from the resource indexes mapped by the time slot code channel resources sent by the Node B, wherein the resource indexes mapped by the time slot code channel resources sent by the Node B are sent to the Node B by the RNC in advance.
According to the technical scheme, the RNC allocates the uplink synchronous SYNC _ UL code for the user equipment and sends the uplink synchronous SYNC _ UL code to the user equipment, allocates the time slot code channel resource for the fast E-DCH random access, the resource index mapping table for mapping the time slot code channel resource and the fast E-DCH random access authorization resource for the UE from the E-DCH shared resource pool and informs the user equipment, so that the use of the resource in the fast E-DCH random access process can be ensured, the resource which is randomly accessed by the fast E-DCH can be ensured to be used for other purposes under the condition of not being used, and the use efficiency of the system resource is improved;
further, the RNC allocates a Midamble code for the user equipment, and the UE selects an authorized resource corresponding to the user equipment from the resource indexes according to the time slot code channel resource mapping carried by the FPACH message sent by the Node B through the FPACH, and transmits data through the E-DCH. And further performing normal E-DCH transmission according to the resources allocated by the Node B in the subsequent transmission. The maximum compatibility with the existing standard is ensured; the collision probability in the process of fast E-DCH random access can be effectively reduced, thereby ensuring the performance of a link and a system.
Drawings
Fig. 1 is a flow chart illustrating a resource allocation method in an E-DCH random access process in the prior art.
Fig. 2 is a flow chart of a resource allocation method in the E-DCH random access process in the present invention.
Fig. 3 is a schematic diagram of resource partitioning in the fast E-DCH random access procedure in the present invention.
Fig. 4 is a schematic diagram of a resource index mapping table structure based on fig. 3.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and examples.
In the embodiment of the invention, an RNC distributes a Midamble code, a time slot code channel resource, a resource index mapping table for time slot code channel resource mapping and a quick E-DCH random access authorization resource for the quick E-DCH random access for UE from an E-DCH shared resource pool, and a Node B sends FPACH information to the UE through FPACH after receiving SYNC _ UL code or Midamble code sent by the UE, and the FPACH information carries indication information of the E-DCH random access; and the UE selects the authorized resource corresponding to the user equipment from the received indication information and transmits data through the E-DCH.
Fig. 2 is a flow chart illustrating a resource allocation method in the fast E-DCH random access process in the present invention. As shown in fig. 2, the method comprises the following steps:
in this step, the UE obtains the timeslot code channel resource authorization information and the E-DCH resource authorization information in advance, and may be notified to the UE in a system message broadcast manner or in a Radio Resource Control (RRC) connection establishment process.
For the mode of broadcasting through the system message, the high-level signaling of the RNC at the network side can be selected for configuration, the high-level signaling comprises an RRC protocol between the RNC and the user equipment and a base station Application part NBAP (Node B Application part) protocol between the RNC and the base station, and the RNC transmits the configured time slot code channel resource authorization information and the rapid E-DCH random access resource authorization information to the UE and the Node B.
The time slot code channel resource authorization information includes time slot code channel resource information and resource index mapping table information mapped by the time slot code channel resource, or the time slot code channel resource information, resource index mapping table information mapped by the time slot code channel resource and carrier resource information. Different from the existing timeslot code channel resource independently allocated to the fast E-DCH random access, in this embodiment, the timeslot code channel resource is a part of an E-DCH shared resource pool, and can also be used for normal E-DCH transmission when not used, and is a semi-shared resource.
The resource index in the resource index mapping table maps one or more time slot code channel resources, that is, one resource index maps one time slot code channel resource, or a combination of a plurality of time slot code channel resources maps one resource index, that is, a resource partitioning method. The following description will take two SF4 code resources with Spreading Factor (SF) of 4 in two time slots (TS, Timeslot) as an example.
Fig. 3 is a schematic diagram of resource partitioning in the fast E-DCH random access procedure in the present invention. As shown in fig. 3, TS1SF4_1, TS1SF4_2, TS2SF4_1 and TS2SF4_2 are 4 resource units, that is, the timeslot code channel resource allocated to the UE, and the resource units can be combined to adapt to the variation of the data transmission amount of different UEs. Therefore, in the present invention, a resource index mapping table is introduced.
Fig. 4 is a schematic diagram of a resource index mapping table structure based on fig. 3. As shown in fig. 4, the Resource index uses a 3-bit information field to indicate the timeslot code channel resources available to the UE in the Resource allocation process, which is called fast E-DCH random Access Resource Indicator (E-DCH Access Resource Indicator). For example, a resource indication of 1 indicates a corresponding slot code resource TS1SF4_1, a resource indication of 2 indicates a corresponding slot code resource TS1SF4_2, and a resource indication of 3 indicates a corresponding slot code resource TS1SF2, i.e., TS1SF4_1 and TS1SF4_ 2.
In practical applications, when the timeslot code resource allocated to the UE is larger than the timeslot code resource allocated in fig. 3, the resource indication in the resource index mapping table needs to be represented by more bits.
In practical application, since 8 SYNC _ UL codes of one cell need to be allocated to PRACH or E-RUCCH or identify fast E-DCH random access in the prior art, when the number of users of E-DCH random access is large, the allocated SYNC _ UL code resources cannot meet the requirement of E-DCH random access of multiple users. In this step, the uplink synchronization function can be completed by conditionally using the Midamble code instead of the SYNC _ UL code by allocating the Midamble code to the UE in advance, so as to solve the problem of resource shortage of the SYNC _ UL code. The UE may specifically apply the Midamble code as follows:
setting a timer on UE and setting a timing time T1, judging the current time and the transmission time interval of the last uplink synchronization signal by the UE, if the time interval is within the time T1, transmitting a Midamble code for uplink synchronization, and if the time interval is greater than T1, transmitting a SYNC _ UL code for uplink synchronization.
in this step, the UE selects fast E-DCH random access when determining that the data amount to be transmitted exceeds the configured data amount threshold according to the preconfigured data amount threshold, and of course, may also select PRACH random access or normal E-DCH random access, and specifically select to perform further setting in advance; and if the data volume to be transmitted does not exceed the configured data volume threshold, selecting the PRACH access. The transmitted SYNC _ UL signal includes SYNC _ UL code or Midamble code.
in this step, since the FPACH message needs to carry the indication information of the fast E-DCH random access, the existing FPACH message needs to be modified.
In this step, the Node B determines to execute HSUPA according to the received SYNC _ UL code or Midamble code, and the 7-bit reserved bit in the existing FPACH message is used to transmit a part of E-DCH resource authorization information. In the invention, the FPACH message does not need to use a 7-bit RACH message transmitting power level information field, so that the fast E-DCH random access resource indication and a part of E-DCH resource authorization information can be transmitted by using the 7-bit reserved bit and the 7-bit RACH message transmitting power level information field with the length of 14 bits in total. Wherein,
the fast E-DCH random access resource grant message includes content similar to that of the prior art, including power information and physical resource information, and specifically includes the following information:
the information includes, for example, 5 bits of Power Resource Related Information (PRRI), 5 bits of Code Resource Related Information (CRRI), 5 bits of Timeslot Resource Related Information (TRRI), 2 bits of E-DCH Hybrid Automatic Repeat Request Acknowledgement Indicator Channel (E-HICH), and 3 bits of Enhanced Uplink Control Channel (E-UCCH) number Indicator (ENI).
Considering the practical application, the PRRI and ENI information may be carried in an information field with a length of 14 bits, or the PRRI (5 bits) and ENI (3 bits) information may be carried after being appropriately processed, and the processing method may be to reduce the dynamic value range of the PRRI and ENI information and/or increase the quantization granularity.
In addition, the FPACH message also needs to carry an available timeslot code channel resource for indicating data transmission in the resource allocation process, that is, a fast E-DCH random access resource indication, that is, a resource indication. As the available time slot code channel resources increase, the number of bits required also increases.
Further, in order to identify whether the validity period of FPACH Resource allocation in time is valid for a single time or valid for a continuous time, that is, the Resource allocation process of FPACH adopts a limited length manner, in the present invention, a Resource Duration Indicator (RDI) is introduced, and 3 bits of RDI Indicator bits are added to an FPACH message to indicate the number of allocated transmission time intervals tti (transmission timing interval).
Thus, in the 14-bit length information field, the information that must be included is fast E-DCH random access resource indicator information, and optionally, may include: PRRI and ENI information, and/or RDI indication information.
If the FPACH message only carries the fast E-DCH random access resource indication information, that is, the fast E-DCH random access indication information includes the fast E-DCH random access resource indication information, all the fast E-DCH random access resource authorization information notifies the UE in a system message broadcasting manner or in the RRC connection establishment process, that is, the RNC issues all the configured fast E-DCH random access authorization resources to the UE.
If the FPACH message carries the fast E-DCH random access resource indication information, the PRRI and ENI information, and/or the RDI indication information, that is, the fast E-DCH random access indication information includes the fast E-DCH random access resource indication information, the PRRI and ENI information, and/or the RDI indication information, and the other fast E-DCH random access resource authorization information notifies the UE in a system message broadcast manner or in the RRC connection establishment process.
in this step, the UE receives the FPACH message, obtains authorized resources including a timeslot code channel resource and a fast E-DCH random access authorized resource according to the fast E-DCH random access resource authorization information obtained in advance and the fast E-DCH random access resource authorization information carried in the indication information, implements random access, and after implementing random access, selects a rate that can be used by itself on the E-DCH and starts data transmission.
In practical applications, in order to improve utilization efficiency of system resources, after fast E-DCH random Access is implemented, when Data transmission is started, the UE may also send Service Indicator (SI) information to the NodeB by carrying the SI information in an enhanced MAC-E PDU (Medium Access Control Protocol entity Data Unit), and execute subsequent processes.
In this step, the Node B allocates subsequent resources to the UE according to the received SI information, and if the buffer status indicated by the SI carried in the received data packet is 0, the Node B returns Acknowledgement (ACK) information to the UE after receiving the information correctly, and the Node B and the UE automatically release the remaining unused resources, and further, the Node B recovers the remaining unused TTI resources allocated in the FPACH and allocates the remaining unused TTI resources to other UEs or uses the remaining unused TTI resources as other uses. If the buffer status indicated by the SI carried by the received data packet is not 0, the Node B allocates more resources to the UE, and transmits the allocated resources to the UE through an E-DCH Absolute Grant Channel (E-AGCH), after the UE receives the resources granted on the E-AGCH, the resources granted on the original FPACH are automatically disabled, and the resources granted on the original FPACH can be recovered by the Node B and allocated to other UEs or used for other purposes.
For example, suppose that resources on 4 TTIs are allocated on FPACH, a data packet sent by UE in a first TTI carries SI information, if a buffer status indicated by the SI information is 0, it indicates that the data packet is correctly transmitted in a 1 st TTI, and Node B receives the SI information indication and returns ACK to the UE, and meanwhile, recycles resources on the remaining 3 TTIs allocated on FPACH; if the buffer status indicated by the SI information is not 0, indicating that the UE needs to apply for more resources for transmission, and the Node B allocates corresponding resources to the UE through the E-AGCH; if the data packet is not received correctly, that is, the Node B does not receive the SI information, the Node B informs the UE to retransmit, the UE can use the resources on one or more TTIs in the subsequent 3 TTIs to transmit until the ACK information sent by the Node B or the resources reallocated by the Node B or the maximum retransmission times are received, and then the Node B recovers the resources on the rest TTIs.
Node B can switch to normal E-DCH sending state after allocating resource for UE according to SI information, the normal E-DCH sending state does not need E-DCH Uplink Random access Control Channel (E-RUCCH) access process.
If the UE does not receive the ACK information on the allocated resources, the UE automatically returns to the normal E-DCH sending process or adopts the PRACH access, if the UE returns to the normal E-DCH sending state, the UE needs to carry out E-RUCCH access to report SI information to the Node B, the Node B carries out resource allocation, and the UE carries out retransmission on an MAC layer; and if the UE is returned to the PRACH access, the UE retransmits in the RRC layer.
The structure of the UE and the network side equipment of the resource distribution system in the rapid E-DCH random access process in the invention is the same as the structure of the UE and the network side equipment in the prior art, and the network side equipment comprises an RNC and a Node B, which are not described again. The system comprises: UE, RNC, and Node B, wherein,
the UE is used for acquiring a time slot code channel resource of the fast E-DCH random access, a resource index mapping table mapped by the time slot code channel resource, a fast E-DCH random access authorization resource, and SYNC _ UL code and Midamble code marked as the fast E-DCH random access from the RNC; and when the quick E-DCH random access is determined to be selected, sending SYNC _ UL code or Midamble code marked as the quick E-DCH random access to the Node B, and acquiring authorized resources according to the received indication information sent by the Node B and the pre-acquired resources.
The indication information sent by the Node B comprises fast E-DCH random access resource indication information, can also comprise fast E-DCH random access resource indication information and RDI indication information, can also comprise fast E-DCH random access resource indication information and PRRI and ENI information, and can also simultaneously comprise the three information, namely the fast E-DCH random access resource indication information, the PRRI and ENI information and the RDI indication information.
After obtaining authorized resources, the UE can select the rate which can be used by the UE and start data transmission on the E-DCH in the subsequent process, the UE can also carry SI information through the MAC-E PDU and send the SI information to the Node B, the Node B allocates resources for the UE according to the received SI information, and the UE performs normal E-DCH transmission according to the allocated resources.
The RNC is used for allocating time slot code channel resources of the fast E-DCH random access, a resource index mapping table of time slot code channel resource mapping, fast E-DCH random access authorization resources, SYNC _ UL codes and Midamble codes marked as the fast E-DCH random access in advance for the UE, and sending the allocated time slot code channel resources of the fast E-DCH random access, the resource index mapping table of time slot code channel resource mapping, the fast E-DCH random access authorization resources, the SYNC _ UL codes and the Midamble codes to the UE;
node B, for receiving SYNC _ UL signal sent by UE, sending FPACH message to the UE through FPACH, and carrying indication information of fast E-DCH random access in the FPACH message;
and receiving SI information carried by the UE through the MAC-e PDU, allocating resources for the UE according to the received SI information, and sending the allocated resources to the UE.
The CRRI, TRRI and EI information parameters in the fast E-DCH random access authorization resource information can be configured by RNC through high-level signaling according to actual needs; the parameters in the PRRI and ENI information may be optionally configured by the RNC through higher layer signaling or configured in real time through FPACH.
It can be seen from the above embodiments that the RNC allocates in advance to the UE the SYNC _ UL code and Midamble code used for fast E-DCH random access, the timeslot code channel resource information, the resource index mapping table for timeslot code channel resource mapping, and the fast E-DCH random access authorization resource to the UE, when the UE determines that fast E-DCH random access is required, the UE sends the SYNC _ UL code or Midamble code identifying the fast E-DCH random access to the Node B, the Node B receives the SYNC _ UL code or Midamble code, sends the FPACH message carrying the fast E-DCH random access indication information to the UE through the FPACH, and the UE obtains the authorized resource according to the received indication information and the pre-obtained resource, and transmits data through the E-DCH. And using MAC-E PDU to carry SI information in data transmission, Node B allocates resources for UE according to received SI information, UE performs normal E-DCH transmission according to allocated resources. The resource allocation method provided by the invention can share the E-PUCH physical resource with the normal E-DCH transmission process, not only can ensure the use of the resource in the rapid E-DCH random access process, but also can ensure that the resource which is rapidly E-DCH random access can be used for other purposes under the condition of not being used, thereby improving the use efficiency of the system resource. Further, by carrying complete PRRI information on the FPACH channel, the UE of the fast E-DCH random access can be ensured to complete the fast E-DCH random access process on the premise of not changing the normal E-DCH transport format combination (E-TFC) selection process, thereby ensuring the maximum compatibility with the existing standard. And the uplink synchronization function in the process of fast E-DCH random access is completed by conditionally using the Midamble code under the condition that the system keeps coarse synchronization, so that the collision probability in the process of fast E-DCH random access can be effectively reduced, and the performance of a link and the system is ensured.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (13)
1. A method for resource allocation, the method comprising:
a radio network controller RNC distributes an uplink synchronous SYNC _ UL code for user equipment and sends the uplink synchronous SYNC _ UL code to the user equipment so that the user equipment can initiate a fast enhanced uplink dedicated channel E-DCH random access to a base station Node B;
and the RNC distributes time slot code channel resources used for fast E-DCH random access and fast E-DCH random access authorization resources for the user equipment from the E-DCH shared resource pool and informs the user equipment, so that the user equipment selects the resources corresponding to the user equipment from the resource indexes mapped by the time slot code channel resources sent by the Node B, wherein the resource indexes mapped by the time slot code channel resources sent by the Node B are sent to the Node B by the RNC in advance.
2. The method of claim 1, wherein the RNC sends a resource index table containing a plurality of time slot code channel resource mappings to the Node B in advance, and the Node B selects a resource index from the resource index table and sends the resource index to the ue, so that the ue can select the resource corresponding to the ue from the resource index table according to the time slot code channel resource mappings sent by the Node B.
3. The method of claim 1, wherein the method further comprises: RNC distributes Midamble code for the user equipment;
the user equipment judges the time interval between the current time and the sending time of the last uplink synchronous signal, if the time interval is within the preset timing time, the rapid E-DCH random access is initiated by sending a Midamble code to the Node B, and if the time interval is greater than the preset timing time, the rapid E-DCH random access is initiated by sending a SYNC _ UL code to the base station Node B.
4. The method of claim 1, wherein the resource index table comprises resource indexes of a single slot code channel resource mapping and/or resource indexes of a multiple slot code channel resource combination mapping.
5. The method of claim 1, wherein the fast E-DCH random access grant resource comprises:
the method comprises the following steps of power resource related information PRRI, uplink enhanced control channel E-UCCH quantity indication ENI information, code resource related information CRRI, time slot resource related information TRRI and E-DCH hybrid automatic repeat request acknowledgement indication channel E-HICH indication information EI.
6. The method of claim 1, wherein the Node B transmits a resource index of the timeslot code channel resource mapping to the ue through the indication information.
7. The method of claim 6, wherein the indication information further comprises Resource Duration Indication (RDI) information identifying a number of allocated Transmission Time Intervals (TTIs).
8. The method of claim 6 or 7, wherein the indication information further comprises PRRI and ENI information;
the fast E-DCH random access authorization resource comprises: CRRI, TRRI, and EI.
9. The method of claim 8, wherein the method further comprises:
after realizing random access, the user equipment sends service indication SI information to the Node B by carrying the service indication SI information in an enhanced media access control entity protocol data unit MAC-e PDU;
and the Node B allocates resources for the user equipment according to the received SI information, and the user equipment performs normal E-DCH transmission according to the allocated resources.
10. The method of claim 9, wherein the Node B allocating resources for the ue according to the received SI information comprises:
if the buffer status indicated by the SI received by the Node B is 0, the Node B returns ACK (acknowledgement character) information to the UE after receiving the information correctly and recovers and distributes unused TTI resources to the user equipment;
if the buffer area state indicated by the SI received by the Node B is not 0, the Node B allocates resources for the user equipment again, transmits the allocated resources to the user equipment through an E-DCH absolute grant channel E-AGCH, and recovers the fast E-DCH random access resources allocated to the user equipment.
11. The method of claim 9 wherein the Node B does not receive SI information, Node B notifies the ue to transmit using resources in one or more of the remaining TTIs until SI information is received or the maximum number of retransmissions is reached, and then Node B recovers the resources in the remaining TTIs.
12. The method of claim 1, wherein the RNC interacts with the user equipment via a radio resource control, RRC, protocol, and wherein the RNC interacts with the base station via a base station application part, NBAP, protocol.
13. A resource allocation system, the system comprising: a radio network controller RNC, a base station Node B and user equipment, wherein,
the RNC distributes an uplink synchronous SYNC _ UL code for the user equipment and sends the uplink synchronous SYNC _ UL code to the user equipment so that the user equipment can initiate the random access of a fast enhanced uplink dedicated channel E-DCH to a base station Node B;
it is characterized in that the preparation method is characterized in that,
the RNC distributes time slot code channel resources of fast E-DCH random access and fast E-DCH random access authorization resources for the user equipment from an E-DCH shared resource pool and informs the user equipment so that the user equipment can select the resources corresponding to the user equipment from the resource indexes mapped by the time slot code channel resources sent by the Node B, wherein the resource indexes mapped by the time slot code channel resources sent by the Node B are sent to the Node B by the RNC in advance.
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-
2008
- 2008-03-25 CN CN2008101027222A patent/CN101547510B/en not_active Expired - Fee Related
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