CN109963338B - Scheduling method and system for uplink carrier in special LTE-FDD cell - Google Patents

Scheduling method and system for uplink carrier in special LTE-FDD cell Download PDF

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Publication number
CN109963338B
CN109963338B CN201711420433.2A CN201711420433A CN109963338B CN 109963338 B CN109963338 B CN 109963338B CN 201711420433 A CN201711420433 A CN 201711420433A CN 109963338 B CN109963338 B CN 109963338B
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uplink
carrier
rnti
random access
enodeb
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CN109963338A (en
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魏立梅
袁乃华
范晨
周志宏
朱玉梅
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Chengdu TD Tech Ltd
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Chengdu TD Tech Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H04L5/0008—Wavelet-division
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H04L5/0057—Physical resource allocation for CQI
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0092—Indication of how the channel is divided
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • 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
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The embodiment of the invention provides a scheduling method and a scheduling system for uplink carriers in a special LTE-FDD cell. The special LTE-FDD cell comprises a pair of FDD carriers, wherein the pair of FDD carriers comprises an uplink main carrier and a downlink carrier, and the special LTE-FDD cell also comprises at least one uplink auxiliary carrier; the uplink main carrier and the at least one uplink auxiliary carrier are both uplink carriers; the method comprises the following steps: the UE reports the wireless capability information of the UE to the eNodeB, and the wireless capability information of the UE carries the capability information supporting a special LTE-FDD cell; the eNodeB configures one or more uplink carriers for the UE according to the wireless capability information of the UE, and sends configuration information of the one or more uplink carriers and downlink carrier configuration information configured to the UE; for each uplink carrier configured to the UE, the UE monitors the PDCCH of the corresponding uplink carrier on the downlink carrier of the cell according to the configuration information of the corresponding uplink carrier, so as to capture the scheduling information of the PUSCH on the uplink carrier.

Description

Scheduling method and system for uplink carrier in special LTE-FDD cell
Technical Field
The invention belongs to the technical field of long term evolution (Long Term Evolution, LTE), and particularly relates to a scheduling method and system of an uplink carrier in a special LTE-FDD cell.
Background
LTE is a long term evolution of The universal mobile telecommunications system (Universal Mobile Telecommunications System, UMTS) technology standard established by The third generation partnership project (The 3rd Generation Partnership Project,3GPP) organization. According to different duplex modes, the LTE system is divided into frequency division duplex (LTE-FDD) and time division duplex (LTE-TDD), and the main difference between the two technologies is on the physical layer of the air interface (frame structure, time division design, synchronization, etc.).
An FDD cell in an LTE system in 3GPP protocol has a pair of carriers: an uplink carrier and a downlink carrier. The downlink carrier transmits PSS, SSS, and PBCH. The User Equipment (UE) can learn the physical layer cell ID of the cell, the duplex mode of the cell, and the radio frame timing and subframe timing of the cell by detecting PSS and SSS on the downlink carrier. Then, the UE can determine the lower two bits of the frame number of the radio frame in the cell and the number of downlink transmission ports of the cell by detecting the PBCH, and can learn through the MIB carried on the PBCH: the downlink bandwidth of the cell, the number of groups of PHICH and the upper 8 bits of the cell radio frame number. After obtaining the above information, the UE may receive the PCFICH at each downlink subframe and determine the length of the current subframe control region according to the control format indication (Control Format Indicator, CFI) carried on the PCFICH. Then, the UE may detect the PDCCH in a search space corresponding to the PDCCH in the current subframe control region: the UE can obtain the scheduling information of the system message through the detected PDCCH scrambled by the SI-RNTI, and can obtain SIB1 and other SIB according to the corresponding PDSCH received by the scheduling information, and obtain all configuration information of the cell from the SIB; the UE can obtain paging information through the detected PDCCH scrambled by the P-RNTI; the UE in RRC_CONNECTED can obtain uplink or downlink scheduling information by detecting the PDCCH scrambled by the C-RNTI; by detecting other types of RNTI-scrambled PDCCHs, the UE may also obtain other types of information, such as: after PRACH is sent in the random access process, UE can obtain the scheduling information of RAR by detecting the PDCCH scrambled by RA-RNTI; when receiving MBMS sent by MBSFN mode, UE can obtain MCCH change notice by detecting PDCCH scrambled by M-RNTI; when receiving the MBMS sent by the SC-PTM mode, the UE can obtain the SC-MCCH change notice by detecting the PDCCH scrambled by the SC-RNTI.
After detecting the C-RNTI scrambled PDCCH, the UE in RRC_CONNECTED can execute corresponding processing according to specific scheduling information carried on the PDCCH: when the PDCCH bears uplink scheduling information, the UE transmits the PUSCH according to the scheduling information, and receives PHICH fed back by the eNodeB according to the time sequence relation between the PUSCH and the PHICH, and the PHICH bears ACK/NACK information of the TB on the PUSCH; when the PDCCH carries downlink scheduling information, the UE receives the PDSCH according to the scheduling information and sends the PUCCH according to the time sequence relation between the PDSCH and the PUCCH, and the PUCCH carries ACK/NACK information of the TB on the PDSCH.
The above is an overview of the various functions performed by the UE in the FDD cell in the LTE system. However, in actual networking, there are scenarios: there is a pair of FDD carriers and one or more pure uplink carriers, which may be licensed or unlicensed, and how to make reasonable use of these carriers is a yet to be addressed problem.
Disclosure of Invention
The embodiment of the invention provides a scheduling method and a scheduling system for uplink carriers in a special LTE-FDD cell.
The technical scheme of the embodiment of the invention is as follows:
a scheduling method for uplink carriers in a special LTE-FDD cell, where the special LTE-FDD cell includes a pair of FDD carriers, the pair of FDD carriers includes an uplink primary carrier and a downlink carrier, and the special LTE-FDD cell further includes at least one uplink secondary carrier; the uplink main carrier and the at least one uplink auxiliary carrier are both uplink carriers; the method comprises the following steps:
The user terminal UE reports the wireless capability information of the UE to the base station eNodeB, and the wireless capability information of the UE carries the capability information supporting the special LTE-FDD cell;
the eNodeB configures one or more uplink carriers for the UE according to the wireless capability information of the UE, and sends configuration information of the one or more uplink carriers and downlink carrier configuration information configured to the UE;
for each uplink carrier configured to the UE, the UE monitors a physical downlink control channel PDCCH of the corresponding uplink carrier on a downlink carrier of the cell according to configuration information of the corresponding uplink carrier, so as to capture scheduling information of a physical uplink shared channel PUSCH on the uplink carrier.
In one embodiment:
when the UE initiates a random access process on the uplink main carrier and accesses the special LTE-FDD cell through the random access process, the eNodeB carries a temporary C-RNTI in a random access response sent to the UE, the UE stores the temporary C-RNTI as the C-RNTI after the contention resolution of the random access process, and monitors the PDCCH scrambled by the C-RNTI on the downlink carrier.
In one embodiment:
when the UE initiates a random access process on one uplink auxiliary carrier in the at least one uplink auxiliary carrier and accesses the special LTE-FDD cell through the random access process, the eNodeB carries a temporary C-RNTI in a random access response sent to the UE, the UE stores the temporary C-RNTI as the C-RNTI after the contention resolution of the random access process, and monitors a PDCCH scrambled by the C-RNTI on the downlink carrier.
In one embodiment: the PDCCH scrambled by the C-RNTI carries scheduling information of a downlink dynamic Physical Downlink Shared Channel (PDSCH) of a downlink carrier and scheduling information of an uplink dynamic Physical Uplink Shared Channel (PUSCH) on an uplink carrier adopted when a random access process is initiated to access a cell.
In one embodiment: when the UE initiates a random access process on the uplink main carrier and accesses the special LTE-FDD cell through the random access process, a Downlink Control Information (DCI) format 0 or 4 carried by the PDCCH scrambled by the C-RNTI is scheduling information of a dynamic PUSCH on the uplink main carrier, and the UE transmits the PUSCH on the uplink main carrier according to the scheduling information of the dynamic PUSCH on the uplink main carrier; or (b)
And when the UE initiates a random access process on one uplink auxiliary carrier in the at least one uplink auxiliary carrier, DCI format 0 or 4 carried by the PDCCH scrambled by the C-RNTI is the scheduling information of dynamic PUSCH on the uplink auxiliary carrier initiating the random access process, and the UE sends the PUSCH on the corresponding uplink auxiliary carrier according to the scheduling information of the dynamic PUSCH on the uplink auxiliary carrier.
In one embodiment: when an uplink carrier configured to the UE by the eNodeB initiates a random access process for the UE to access an uplink carrier adopted when the cell, if the eNodeB configures semi-static PUSCH resources for the UE on the carrier, the eNodeB distributes SPS C-RNTI on the carrier to the UE; the eNodeB configures semi-static PUSCH resources on the uplink carrier for the UE through the PDCCH scrambled by the SPS C-RNTI or instructs the UE to release the configured semi-static PUSCH resources on the uplink carrier; the eNodeB allocates semi-static PDSCH resources to the UE on a downlink carrier or instructs the UE to release the semi-static PDSCH resources on the downlink carrier based on the SPS C-RNTI; or (b)
When the uplink carrier configured to the UE by the eNodeB is not the uplink carrier adopted when the UE initiates a random access process to access a cell, the eNodeB distributes the C-RNTI on the uplink carrier configured to the UE, and the PDCCH scrambled by the C-RNTI is used for distributing dynamic PUSCH resources on the uplink carrier to the UE; if the eNodeB configures semi-static PUSCH resources for the UE on the uplink carrier configured for the UE, the eNodeB distributes SPS C-RNTI on the uplink carrier configured for the UE, and the eNodeB configures the semi-static PUSCH resources on the uplink carrier for the UE through the PDCCH scrambled by the SPS C-RNTI or instructs the UE to release the configured semi-static PUSCH resources on the uplink carrier.
In one embodiment: when the eNodeB configures the UE with semi-static PDSCH resources on the downlink carrier:
if SPS C-RNTI is not configured for the UE on an uplink carrier adopted when the UE initiates a random access process to access the cell, the eNodeB allocates SPS C-RNTI to a downlink carrier, a PDCCH scrambled by the SPS C-RNTI is used for allocating semi-static PDSCH resources on the downlink carrier or indicating the UE to release the configured semi-static PDSCH resources, and the SPS C-RNTI is also used for allocating the semi-static PUSCH resources or releasing the semi-static PUSCH resources on the uplink carrier adopted when the UE initiates the random access process to access the cell;
If SPS C-RNTI is configured for the UE on an uplink carrier adopted when the UE initiates a random access process to access the cell, the eNodeB uses the SPS C-RNTI to allocate semi-static PDSCH resources on a downlink carrier to the UE or instruct the UE to release the configured semi-static PDSCH resources.
An uplink carrier scheduling system in a special LTE-FDD cell, wherein the special LTE-FDD cell comprises a pair of FDD carriers, the pair of FDD carriers comprises an uplink main carrier and a downlink carrier, and the special LTE-FDD cell also comprises at least one uplink auxiliary carrier; the uplink main carrier and the at least one uplink auxiliary carrier are both uplink carriers; the system comprises a user terminal (UE) and a base station (eNodeB), wherein:
the UE is used for reporting the wireless capability information of the UE to the eNodeB, and the wireless capability information of the UE carries the capability information supporting the special LTE-FDD cell;
the eNodeB is used for configuring one or more uplink carriers for the UE according to the wireless capability information of the UE, and sending configuration information of the one or more uplink carriers and downlink carrier configuration information configured for the UE to the UE;
the UE is further configured to monitor, for each uplink carrier configured to the UE, a physical downlink control channel PDCCH of the corresponding uplink carrier on a downlink carrier of the cell according to configuration information of the corresponding uplink carrier, so as to capture scheduling information of a physical uplink shared channel PUSCH on the uplink carrier.
In one embodiment: when the UE initiates a random access process on the uplink main carrier, accessing the special LTE-FDD cell through the random access process:
the eNodeB is used for carrying a temporary C-RNTI in a random access response sent to the UE;
the UE is used for storing the temporary C-RNTI as the C-RNTI after the contention resolution in the random access process, and monitoring the PDCCH scrambled by the C-RNTI on the downlink carrier.
In one embodiment: when the UE initiates a random access process on one uplink auxiliary carrier in the at least one uplink auxiliary carrier, accessing the special LTE-FDD cell through the random access process:
the eNodeB is used for carrying a temporary C-RNTI in a random access response sent to the UE;
the UE is used for storing the temporary C-RNTI as the C-RNTI after the contention resolution in the random access process, and monitoring the PDCCH scrambled by the C-RNTI on the downlink carrier.
In one embodiment: the PDCCH scrambled by the C-RNTI carries scheduling information of a downlink dynamic Physical Downlink Shared Channel (PDSCH) of a downlink carrier and scheduling information of an uplink dynamic Physical Uplink Shared Channel (PUSCH) on an uplink carrier adopted when a random access process is initiated to access a cell.
In one embodiment: when the UE initiates a random access process on the uplink main carrier and accesses the special LTE-FDD cell through the random access process, DCI format 0 or 4 carried by the PDCCH scrambled by the C-RNTI is scheduling information of dynamic PUSCH on the uplink main carrier; the UE is configured to send PUSCH on the uplink primary carrier according to scheduling information of dynamic PUSCH on the uplink primary carrier; or (b)
When the UE initiates a random access process on one uplink auxiliary carrier in the at least one uplink auxiliary carrier, DCI format 0 or 4 carried by the PDCCH scrambled by the C-RNTI is the scheduling information of dynamic PUSCH on the uplink auxiliary carrier initiating the random access process; and the UE is used for sending the PUSCH on the corresponding uplink auxiliary carrier according to the scheduling information of the dynamic PUSCH on the uplink auxiliary carrier.
In one embodiment: when an uplink carrier configured to a UE by an eNodeB initiates a random access procedure for the UE to access an uplink carrier adopted in a cell, if the eNodeB configures a semi-static PUSCH resource for the UE on the carrier, the eNodeB is configured to: an SPS C-RNTI on the carrier is allocated to the UE, semi-static PUSCH resources on the uplink carrier are allocated to the UE through a PDCCH scrambled by the SPS C-RNTI or the UE is instructed to release the allocated semi-static PUSCH resources on the uplink carrier, and the semi-static PDSCH resources are allocated to the UE on the downlink carrier based on the SPS C-RNTI or the UE is instructed to release the semi-static PDSCH resources on the downlink carrier; or (b)
When the uplink carrier configured to the UE by the eNodeB is not the uplink carrier adopted when the UE initiates a random access process to access a cell, the eNodeB is used for distributing the C-RNTI on the uplink carrier configured to the UE, and the PDCCH scrambled by the C-RNTI is used for distributing dynamic PUSCH resources on the uplink carrier to the UE; if the eNodeB configures semi-static PUSCH resources for the UE on the uplink carrier configured for the UE, the eNodeB is further configured to allocate SPS C-RNTI on the uplink carrier configured for the UE to the UE, configure the semi-static PUSCH resources on the uplink carrier for the UE through the PDCCH scrambled by the SPS C-RNTI or instruct the UE to release the configured semi-static PUSCH resources on the uplink carrier.
In one embodiment: when the eNodeB configures the UE with semi-static PDSCH resources on the downlink carrier:
if SPS C-RNTI is not configured for the UE on an uplink carrier adopted when the UE initiates a random access process to access the cell, the eNodeB is used for distributing SPS C-RNTI to a downlink carrier, a PDCCH scrambled by the SPS C-RNTI is used for distributing semi-static PDSCH resources on the downlink carrier or indicating the UE to release the configured semi-static PDSCH resources, and the SPS C-RNTI is also used for distributing the semi-static PUSCH resources or releasing the semi-static PUSCH resources on the uplink carrier adopted when the UE initiates the random access process to access the cell;
If SPS C-RNTI is configured for the UE on an uplink carrier adopted when the UE initiates a random access process to access the cell, the eNodeB is used for distributing semi-static PDSCH resources on a downlink carrier or indicating the UE to release the configured semi-static PDSCH resources by using the SPS C-RNTI.
As can be seen from the above technical solution, in the embodiment of the present invention, a special LTE-FDD cell is constructed, which includes a pair of FDD carriers, where the pair of FDD carriers includes an uplink primary carrier and a downlink carrier, and the special LTE-FDD cell further includes at least one uplink secondary carrier; the uplink main carrier and at least one uplink auxiliary carrier are uplink carriers, and the embodiment of the invention realizes that each uplink carrier uses the special configuration information of the carrier to schedule the resources of the carrier by allocating different configuration information to different uplink carriers.
Drawings
Fig. 1 is a flow chart of a scheduling method of uplink carriers in a special LTE-FDD cell according to the present invention.
Fig. 2 is a block diagram of a scheduling system for uplink carriers in a special LTE-FDD cell according to the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings, in order to make the objects, technical solutions and advantages of the present invention more apparent.
For simplicity and clarity of description, the following description sets forth aspects of the invention by describing several exemplary embodiments. Numerous details in the embodiments are provided solely to aid in the understanding of the invention. It will be apparent, however, that the embodiments of the invention may be practiced without limitation to these specific details. Some embodiments are not described in detail in order to avoid unnecessarily obscuring aspects of the present invention, but rather only to present a framework. Hereinafter, "comprising" means "including but not limited to", "according to … …" means "according to at least … …, but not limited to only … …". The term "a" or "an" is used herein to refer to a number of components, either one or more, or at least one, unless otherwise specified.
In actual networking, there are such scenarios: there is a pair of FDD carriers and one or more pure uplink carriers. The purely upstream carrier may be a licensed carrier or an unlicensed carrier. The UE performs uplink transmission on an unlicensed carrier with little interference to the existing traffic on the carrier, so that such a carrier can be used as a pure uplink carrier only for uplink transmission.
In practical service applications, there is a service requirement for video upload in many scenarios, where the service requirement is far greater for uplink bandwidth than for downlink bandwidth in a cell. Aiming at the actual networking scene and service application scene, the problem of how to use 1 pair of FDD carriers and 1 or more pure uplink carriers to solve the problem that the uplink bandwidth requirement in a cell is far greater than the downlink bandwidth requirement in the actual application is solved.
Aiming at the conditions of 1 pair of available FDD carriers and 1 or more available pure uplink carriers in the uplink large bandwidth requirement and the actual networking scene of video uploading, a special FDD cell can be established in an LTE system: the cell includes a pair of FDD carriers and 1 or more pure uplink carriers. In a pair of FDD carriers in a cell, the downlink carrier is the only downlink carrier in the special FDD cell, and the uplink carrier is the uplink primary carrier of the special FDD cell. All the pure uplink carriers in the cell are the uplink secondary carriers of this cell. In this particular FDD cell, the FDD frame structure is employed: the unique downlink carrier and each uplink carrier adopt an FDD frame structure. The unique downlink carrier in the cell performs all functions of the downlink carrier in the common FDD cell in the same manner, and the unique uplink primary carrier in the cell performs all functions of the uplink carrier in the common FDD cell in the same manner.
UEs accessing such special FDD cells are of two types:
(1) Ordinary UE: these UEs perform the respective functions of the UEs within a common FDD cell in the same manner. For these UEs, the cell is a normal FDD cell, which consists of only one pair of FDD carriers: the UE-related uplink transmission is performed on an uplink primary carrier, and the UE-related downlink transmission is performed through a unique downlink carrier. The UEs are not aware of the existence of other uplink secondary carriers in the cell at all.
(2) UE supporting special LTE-FDD cell (new UE): such UEs report the ability to support special FDD cells when accessing the cells. If the cell accessed by the UE is a common FDD cell, the eNodeB ignores the capability report; if the cell accessed by the UE is a special FDD cell, the eNodeB allocates uplink carrier waves to the UE according to the capability report: the UE may be allocated only an uplink primary carrier, or may be allocated multiple uplink carriers at the same time, where the carriers may or may not include the uplink primary carrier. For such UEs, after the UE accesses a special FDD cell, the eNodeB carries an indication of the special FDD cell when allocating resources to the UE, or implicitly indicates that the current cell is a special FDD cell through an allocated uplink carrier, such as: the allocated uplink carrier and downlink carrier are not paired carriers.
However, for this special LTE-FDD cell, the technical problem of how to schedule UEs on each uplink carrier needs to be solved. The present application presents a solution to the above-mentioned problems in a special LTE-FDD cell.
In a common LTE-FDD cell, dynamic PUSCH resources or SPS (semi-static) PUSCH resources may be allocated to UEs on the uplink carrier. Accordingly, the UE is assigned a cell radio network temporary identity C-RNTI (Cell Radio Network Temmporary Identify) or Semi-persistent SPS (Semi-Persistent Scheduling) C-RNTI. The UE detects the C-RNTI or the PDCCH scrambled by the SPS C-RNTI to obtain the scheduling information of the dynamic or SPS PUSCH. In a special FDD cell, multiple uplink carriers may be configured for the new UE, and when the DCI format (DCI format 0 or DCI format 4) for scheduling uplink carrier resources on the PDCCH does not carry the carrier indication field, how to indicate to the UE the uplink carrier scheduled by the DCI format on the PDCCH is a problem to be solved. The applicant solves this problem by allocating different C-RNTIs or SPS C-RNTIs to different uplink carriers, and the eNodeB uses the corresponding uplink carrier dedicated C-RNTIs or SPS C-RNTIs to schedule dynamic PUSCH or semi-static PUSCH resources on that carrier.
Specifically, for this problem, the method for scheduling uplink carriers in a special FDD cell of the present invention includes: for the UE accessing the special FDD cell, if the UE reports the capability of supporting the special FDD cell, the eNodeB reports the capability of the UE to the UE for configuring uplink carrier. For each uplink carrier configured to the UE, allocating dynamic PUSCH or SPS PUSCH resources on the carrier to the UE, and configuring the C-RNTI or SPS C-RNTI for the carrier to the UE. The C-RNTI or SPS C-RNTI scrambled PDCCH of the carrier is used to schedule dynamic PUSCH or SPS PUSCH resources on the uplink carrier to the UE. The C-RNTI allocated to the UE on the same uplink carrier is different from the SPS C-RNTI, and the C-RNTI or SPS C-RNTI allocated to each uplink carrier of the UE is different.
Based on the above analysis, fig. 1 is a flowchart of a scheduling method of uplink carriers in a special LTE-FDD cell according to the present invention. The special LTE-FDD cell comprises a pair of FDD carriers, wherein the pair of FDD carriers comprises an uplink main carrier and a downlink carrier, and the special LTE-FDD cell also comprises at least one uplink auxiliary carrier; the uplink main carrier and at least one uplink auxiliary carrier are both uplink carriers.
As shown in fig. 1, the method includes:
step 101: the UE reports the wireless capability information of the UE to the eNodeB, and the wireless capability information of the UE carries the capability information supporting a special LTE-FDD cell.
After the UE supporting the special FDD cell is accessed to the cell, the wireless capability information of the UE is reported in the UE capability reporting process, and the capability information supporting the special FDD cell is carried in the wireless capability information of the UE. The capability information supporting the special FDD cell carries: an indication of a particular FDD cell is supported. When the indication of supporting the special FDD cell is TRUE, the capability information of supporting the special FDD cell also carries the frequency band information of the special FDD cell supported by the UE.
Step 102: the eNodeB configures one or more uplink carriers for the UE according to the wireless capability information of the UE, and sends configuration information of the one or more uplink carriers and downlink carrier configuration information configured for the UE to the UE.
Here, for a UE supporting a special FDD cell, the eNodeB configures uplink carriers for the UE according to the radio capability information of the UE, and transmits configuration information of each uplink carrier configured for the UE and configuration information of downlink carriers to the UE through dedicated signaling.
The configuration of the uplink carrier is divided into two scenarios:
scene 1: when the UE initiates random access on an uplink main carrier of a special FDD cell, and accesses the special FDD cell through the random access process, the eNodeB carries a temporary (sample) C-RNTI in a random access response sent to the UE, the UE stores the sample C-RNTI as the C-RNTI after the contention resolution of the random access process, and monitors a PDCCH scrambled by the C-RNTI on a downlink carrier of the accessed cell.
Scene 2: when UE initiates random access on a certain uplink auxiliary carrier of a special FDD cell, and accesses the special FDD cell through the random access process, eNodeB carries a sample C-RNTI in a random access response sent to the UE, after the contention resolution of the random access process, the UE saves the sample C-RNTI as C-RNTI, and monitors a PDCCH scrambled by the C-RNTI on a downlink carrier of the accessed cell.
In the two scenarios, the PDCCH scrambled by the C-RNTI carries scheduling information of downlink dynamic PDSCH of a downlink carrier in a cell and scheduling information of uplink dynamic PUSCH on an uplink carrier employed when initiating a random access procedure to access the cell. The method comprises the following steps:
(1) The PDCCH carries downlink control information (Downlink Control Information, DCI), which has a plurality of DCI formats.
(2) DCI format 0 or DCI format 4 carries scheduling information of an uplink dynamic PUSCH.
(3) DCI formats 1, 1A, 1B, 1C, 1D and DCI formats 2, 2A, 2B, 2C, 2D carry scheduling information of downlink dynamic PDSCH.
(4) In scenario 1, DCI format 0 or 4 carried by the PDCCH scrambled by the C-RNTI is scheduling information of a dynamic PUSCH on an uplink primary carrier, and the UE sends the PUSCH on the uplink primary carrier according to the scheduling information of the uplink dynamic PUSCH.
(5) In scenario 2, DCI format 0 or 4 carried by the PDCCH scrambled by the C-RNTI is scheduling information of a dynamic PUSCH on an uplink secondary carrier initiating a random access procedure, and the UE sends the PUSCH on a corresponding uplink secondary carrier according to the scheduling information of the uplink dynamic PUSCH.
(6) In any scenario, DCI formats 1, 1A, 1B, 1C, 1D and DCI formats 2, 2A, 2B, 2C, 2D carried by the PDCCH scrambled by the C-RNTI are scheduling information of downlink carrier uplink and downlink PDSCH in the cell. And the UE receives the corresponding PDSCH according to the scheduling information.
Furthermore, the eNodeB may configure one or more uplink carriers for the UE according to the radio capability information of the UE, where specific uplink carrier configuration includes:
(1) When the uplink carrier configured to the UE by the eNodeB initiates a random access process for the UE to access an uplink carrier adopted when the cell, if the eNodeB configures semi-static PUSCH resources for the UE on the carrier, the eNodeB distributes SPS C-RNTI on the carrier to the UE. And then, the eNodeB configures the semi-static PUSCH resource on the uplink carrier for the UE through the PDCCH scrambled by the SPS C-RNTI or instructs the UE to release the configured semi-static PUSCH resource on the uplink carrier. The SPS C-RNTI is then also used by the eNodeB to allocate semi-persistent PDSCH resources on the downlink carrier to the UE or instruct the UE to release semi-persistent PDSCH resources on the downlink carrier.
(2) When the uplink carrier configured to the UE by the eNodeB is not the uplink carrier adopted when the UE initiates the random access process to access the cell, the eNodeB allocates the C-RNTI on the carrier to the UE, and the PDCCH scrambled by the C-RNTI is used for allocating dynamic PUSCH resources on the uplink carrier to the UE. If the eNodeB configures semi-static PUSCH resources for the UE on the carrier, the eNodeB allocates SPS C-RNTI on the carrier to the UE. And then, the eNodeB configures the semi-static PUSCH resource on the uplink carrier for the UE through the PDCCH scrambled by the SPS C-RNTI or instructs the UE to release the configured semi-static PUSCH resource on the uplink carrier.
(3) When the eNodeB configures the UE with semi-static PDSCH resources on the downlink carrier:
(a) If SPS C-RNTI is not configured for the UE on an uplink carrier adopted when the UE initiates a random access process to access the cell, the eNodeB allocates the SPS C-RNTI to a downlink carrier. The PDCCH scrambled by the SPS C-RNTI is used for distributing semi-static PDSCH resources on a downlink carrier or indicating the UE to release the configured semi-static PDSCH resources. Thereafter, the SPS C-RNTI is also used by the eNodeB to allocate or release semi-persistent PUSCH resources on an uplink carrier employed by the UE when the UE initiates a random access procedure to access the cell.
(b) If the SPS C-RNTI is already configured for the UE on the uplink carrier employed when the UE initiates the random access procedure to access the cell, the eNodeB still uses the SPS C-RNTI to allocate semi-persistent PDSCH resources on the downlink carrier to the UE or instruct the UE to release the configured semi-persistent PDSCH resources.
The eNodeB carries the configuration information of each uplink carrier configured to the UE and the configuration information of the downlink carrier to the UE through a special signaling. The dedicated signaling is an RRC connection reconfiguration message. Configuration information of the uplink carrier includes, but is not limited to: and C-RNTI used for distributing dynamic PUSCH resources on the uplink carrier to the UE. When the eNodeB allocates a semi-static PUSCH resource to the uplink carrier, the configuration information further includes: SPS C-RNTI for allocating semi-persistent PUSCH resources on the uplink carrier to the UE. If the eNodeB allocates semi-static PDSCH resources to the UE on the downlink carrier of the cell, the configuration information of the downlink carrier includes, but is not limited to: SPS C-RNTI used for distributing semi-static resources to downlink carriers. The C-RNTI or SPS C-RNTI of each uplink carrier is different and used for indicating different uplink carriers and different types of PUSCH resources on corresponding carriers.
Step 103: the UE receives the special signaling sent by the eNodeB, saves the configuration information of each uplink carrier carried by the special signaling and the configuration information of the downlink carrier, and feeds back a response message to the eNodeB, wherein the response message is preferably RRC connection reconfiguration completion.
Step 104: for each uplink carrier configured to the UE, the UE monitors a C-RNTI or an SPS C-RNTI scrambled PDCCH corresponding to the uplink carrier on a downlink carrier of a cell according to the configuration information of the uplink carrier so as to capture the scheduling information of a dynamic PUSCH or the scheduling information of a semi-static PUSCH on the uplink carrier. For an uplink carrier adopted when a random access process is initiated to access a cell, the UE monitors a C-RNTI or a PDCCH scrambled by SPS C-RNTI corresponding to the carrier to capture the scheduling information of a dynamic PDSCH or the scheduling information of a semi-static PDSCH on the downlink carrier.
Step 105: the UE performs processing according to the scheduling information.
Here, for a detected PDCCH scrambled by a certain C-RNTI, the UE transmits a corresponding PUSCH on a corresponding uplink carrier or receives a corresponding PDSCH on a downlink carrier according to uplink or downlink dynamic PUSCH scheduling information indicated by DCI on the PDCCH. And for the PDCCH scrambled by a detected SPS C-RNTI, the UE configures the corresponding semi-static PUSCH/PDSCH or releases the configured semi-static PUSCH/PDSCH according to the uplink/downlink semi-static resource allocation information or the information for releasing the uplink/downlink semi-static resources indicated by the DCI on the PDCCH.
In the above method, the uplink primary carrier and the downlink carrier in the special FDD cell are paired FDD carriers, which have the same bandwidth, and the length of DCI format 0 for scheduling the uplink primary carrier and the length of DCI format 1A for scheduling the downlink carrier in the same search space (public search space or UE-specific search space) are determined according to the existing 3GPP protocol: and respectively calculating the lengths of a DCI format 0 and a DCI format 1A according to the bandwidths of the pair of FDD carriers, taking the maximum value of the lengths of the two DCI formats as the common length of the two DCI formats in the same search space, and adding patch bits after DCI information provided by the short DCI format in the two DCI formats until the length of the DCI information carried by the DCI format is equal to the set common length. The length setting method of DCI format 4 on the uplink main carrier is the same as the existing 3GPP protocol: the length of DCI format 4 is set according to the bandwidth of the pair of FDD carriers. However, the uplink secondary carrier has no paired FDD downlink carrier, and the bandwidth of the uplink secondary carrier is not necessarily the same as the bandwidth of the uplink primary carrier, and the length of DCI format 0/4 of the scheduled uplink secondary carrier may be different from the length of DCI format 0/4 of the scheduled primary carrier.
In the above method, the length of DCI format 0/4 for scheduling resources on the uplink secondary carrier may be determined according to one of the following methods:
(1) The length of DCI format 0/4 of the scheduled uplink auxiliary carrier is equal to the length of DCI format 0/4 of the scheduled uplink main carrier in the same search space. In the method, if the bandwidth of the uplink auxiliary carrier is larger than that of the uplink main carrier, the scheduling granularity of the auxiliary carrier is at least N RBs. N is obtained by rounding up the A value. A = secondary carrier bandwidth/primary carrier bandwidth.
(2) The length of DCI format 0/4 of the scheduled uplink auxiliary carrier is set according to the bandwidth of the scheduled uplink carrier. The DCI format 0/4 includes the same fields and the length setting method of the fields as the existing 3GPP protocol, where the length of the resource allocation field is set according to the uplink carrier bandwidth. Under the method, when configuring uplink carriers for the UE, the bandwidth of each uplink carrier configured for the UE is configured for the UE as configuration information of each uplink carrier. The UE determines the length of DCI format 0/4 of the scheduling carrier according to the carrier bandwidth. Or broadcasting carrier subscripts of all uplink auxiliary carriers in the cell and corresponding bandwidths through the system message. When configuring uplink carrier for UE, carrying subscript of corresponding uplink carrier in configuration information of uplink carrier sent to UE, and determining bandwidth of corresponding uplink carrier by UE according to subscript value and broadcast message.
(3) The length of DCI format 0/4 of the uplink auxiliary carrier is scheduled according to the length of DCI format 0/4 in the common FDD cell, which is the same as the bandwidth of the uplink carrier. The method comprises the following steps: and determining the length L1/L2 of the DCI format 0/4 in the FDD cell under the corresponding bandwidth according to the bandwidth of the uplink carrier. The method for determining the length L1 of DCI format 0 is the same as the existing protocol: the pull-leveling process is performed on the length of DCI format 0 and the length of DCI format 1A in the same search space (common search space or UE-specific search space). And the length of DCI format 0/4 of the uplink auxiliary carrier is scheduled to be L1/L2.
(4) And taking the maximum value of the bandwidths of all the uplink carriers or the maximum value of the bandwidths of all the uplink auxiliary carriers, and calculating the length N of the DCI format 0/4 according to the uplink bandwidths. And enabling the length of DCI format 0/4 of each uplink auxiliary carrier to be equal to the length N. When the UE accesses the cell, the value N or the corresponding bandwidth maximum is configured to the UE.
If the C-RNTI or SPS C-RNTI corresponding to the DCI format 4 of a certain auxiliary carrier is the same as the C-RNTI or SPS C-RNTI used in downlink carrier scheduling, adding one bit 0 at the tail end of the DCI format 4 when the length of the DCI format 4 determined by the method is the same as the length of the DCI formats 1, 2A, 2B, 2C or 2D.
Based on the above description, the embodiment of the invention also provides a scheduling system of uplink carriers in a special LTE-FDD cell. The special LTE-FDD cell comprises a pair of FDD carriers, wherein the pair of FDD carriers comprises an uplink main carrier and a downlink carrier, and the special LTE-FDD cell also comprises at least one uplink auxiliary carrier; the uplink primary carrier and the at least one uplink secondary carrier are both uplink carriers.
Fig. 2 is a block diagram of a scheduling system for uplink carriers in a special LTE-FDD cell according to the present invention. The system includes a UE201 and an eNodeB202. Wherein:
a UE201, configured to report radio capability information of the UE to an eNodeB202, where the radio capability information of the UE201 carries capability information supporting a special LTE-FDD cell;
an eNodeB202 configured to configure one or more uplink carriers for the UE201 according to the radio capability information of the UE201, and send configuration information of the one or more uplink carriers configured to the UE201 and downlink carrier configuration information to the UE201;
the UE201 is further configured to monitor, for each uplink carrier configured to the UE201, a Physical Downlink Control Channel (PDCCH) of the corresponding uplink carrier on a downlink carrier of the cell according to configuration information of the corresponding uplink carrier, so as to capture scheduling information of a Physical Uplink Shared Channel (PUSCH) on the uplink carrier.
In one embodiment, when the UE201 initiates a random access procedure on the uplink primary carrier, a special LTE-FDD cell is accessed through the random access procedure:
an eNodeB202 for carrying a temporary C-RNTI in a random access response sent to the UE 201;
UE201, configured to store the temporary C-RNTI as a C-RNTI after contention resolution in the random access procedure, and monitor the C-RNTI scrambled PDCCH on the downlink carrier.
In one embodiment, when the UE201 initiates a random access procedure on one of the at least one uplink secondary carrier, accessing the special LTE-FDD cell through the random access procedure:
an eNodeB202 for carrying a temporary C-RNTI in a random access response sent to the UE 201;
UE201, configured to store the temporary C-RNTI as a C-RNTI after contention resolution in the random access procedure, and monitor the C-RNTI scrambled PDCCH on the downlink carrier.
In one embodiment, the C-RNTI scrambled PDCCH carries scheduling information of a downlink physical downlink PDSCH of a downlink carrier and scheduling information of an uplink physical PUSCH on an uplink carrier employed when a random access procedure is initiated to access a cell.
In one embodiment, the C-RNTI scrambled PDCCH carries Downlink Control Information (DCI), wherein: DCI format 0 or DCI format 4 carries scheduling information of uplink dynamic PUSCH; DCI formats 1, 1A, 1B, 1C, 1D and DCI formats 2, 2A, 2B, 2C, 2D carry scheduling information of downlink dynamic PDSCH.
In one embodiment, when the UE201 initiates a random access procedure on the uplink primary carrier, and accesses the special LTE-FDD cell through the random access procedure, DCI format 0 or 4 carried by the PDCCH scrambled by the C-RNTI is scheduling information of the dynamic PUSCH on the uplink primary carrier; UE201, configured to send PUSCH on the uplink primary carrier according to the scheduling information of the dynamic PUSCH on the uplink primary carrier; or (b)
When the UE201 initiates a random access procedure on one uplink auxiliary carrier of at least one uplink auxiliary carrier, DCI format 0 or 4 carried by the PDCCH scrambled by the C-RNTI is scheduling information of a dynamic PUSCH on the uplink auxiliary carrier initiating the random access procedure; and the UE201 is configured to send PUSCH on the corresponding uplink secondary carrier according to the scheduling information of the dynamic PUSCH on the uplink secondary carrier.
In one embodiment, when the eNodeB202 configures an uplink carrier to the UE201 to be an uplink carrier used when the UE201 initiates a random access procedure to access a cell, if the eNodeB202 configures a semi-static PUSCH resource to the UE201 on the carrier, the eNodeB202 is configured to: allocating SPS C-RNTI on the carrier to the UE201, configuring semi-static PUSCH resources on the uplink carrier or indicating the UE to release the configured semi-static PUSCH resources on the uplink carrier to the UE through the PDCCH scrambled by the SPS C-RNTI, and allocating the semi-static PDSCH resources on the downlink carrier to the UE based on the SPS C-RNTI or indicating the UE to release the semi-static PDSCH resources on the downlink carrier; or (b)
When the uplink carrier configured by the eNodeB202 to the UE201 is not the uplink carrier adopted when the UE201 initiates the random access procedure to access the cell, the eNodeB202 is configured to allocate the C-RNTI configured to the UE201 on the uplink carrier to the UE201, and the PDCCH scrambled by the C-RNTI is used to allocate the dynamic PUSCH resource on the uplink carrier to the UE 201; if the eNodeB202 configures semi-static PUSCH resources for the UE201 on the uplink carrier configured for the UE201, the eNodeB202 is further configured to allocate SPS C-RNTI on the uplink carrier configured for the UE201 to the UE201, configure semi-static PUSCH resources on the uplink carrier for the UE201 through the PDCCH scrambled by the SPS C-RNTI, or instruct the UE201 to release the configured semi-static PUSCH resources on the uplink carrier.
In one embodiment, when the eNodeB202 configures the UE201 with semi-static PDSCH resources on the downlink carrier:
if the SPS C-RNTI is not configured for the UE201 on the uplink carrier employed when the UE201 initiates the random access procedure to access the cell, the eNodeB202 is configured to allocate the SPS C-RNTI to the downlink carrier, the PDCCH scrambled by the SPS C-RNTI is used to allocate semi-persistent PDSCH resources on the downlink carrier or instruct the UE201 to release the configured semi-persistent PDSCH resources, and the SPS C-RNTI is also used by the eNodeB202 to allocate semi-persistent PUSCH resources or release the semi-persistent PUSCH resources on the uplink carrier employed when the UE201 initiates the random access procedure to access the cell;
If an SPS C-RNTI has been configured for the UE201 on an uplink carrier employed when the UE201 initiates a random access procedure to access the cell, the eNodeB202 is configured to allocate semi-persistent PDSCH resources on the downlink carrier or instruct the UE to release the configured semi-persistent PDSCH resources using the SPS C-RNTI.
In summary, in the embodiment of the present invention, a special LTE-FDD cell is constructed, where the special LTE-FDD cell includes a pair of FDD carriers, where the pair of FDD carriers includes an uplink primary carrier and a downlink carrier, and the special LTE-FDD cell further includes at least one uplink secondary carrier; the uplink main carrier and at least one uplink auxiliary carrier are uplink carriers, and different configuration information is allocated to different uplink carriers: C-RNTI or SPS C-RNTI, each uplink carrier uses the special configuration information (C-RNTI or SPS C-RNTI) of the carrier to schedule the resources of the carrier.
The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (12)

1. The scheduling method of the uplink carrier in the special LTE-FDD cell is characterized in that the special LTE-FDD cell comprises a pair of FDD carriers, the pair of FDD carriers comprises an uplink main carrier and a downlink carrier, and the special LTE-FDD cell also comprises at least one uplink auxiliary carrier; the uplink main carrier and the at least one uplink auxiliary carrier are both uplink carriers; the method comprises the following steps:
The user terminal UE reports the wireless capability information of the UE to the base station eNodeB, and the wireless capability information of the UE carries the capability information supporting the special LTE-FDD cell;
the eNodeB configures one or more uplink carriers for the UE according to the wireless capability information of the UE, and sends configuration information of the one or more uplink carriers and downlink carrier configuration information configured to the UE; different uplink carrier configuration information is allocated to different uplink carriers, so that each uplink carrier uses dedicated uplink carrier configuration information to schedule resources of the uplink carrier, wherein the uplink carrier configuration information comprises: C-RNTI or SPS C-RNTI; the C-RNTI or SPS C-RNTI of each uplink carrier is different;
for each uplink carrier configured to the UE, the UE monitors a physical downlink control channel PDCCH scrambled by a C-RNTI or SPS C-RNTI corresponding to the uplink carrier on a downlink carrier of a cell according to configuration information of the corresponding uplink carrier so as to capture scheduling information of a physical uplink shared channel PUSCH on the uplink carrier;
when an uplink carrier configured to the UE by the eNodeB initiates a random access process for the UE to access an uplink carrier adopted when the cell, if the eNodeB configures semi-static PUSCH resources for the UE on the carrier, the eNodeB distributes SPS C-RNTI on the carrier to the UE; the eNodeB configures semi-static PUSCH resources on the uplink carrier for the UE through the PDCCH scrambled by the SPS C-RNTI or instructs the UE to release the configured semi-static PUSCH resources on the uplink carrier; the eNodeB allocates semi-static PDSCH resources to the UE on a downlink carrier or instructs the UE to release the semi-static PDSCH resources on the downlink carrier based on the SPS C-RNTI; or (b)
When the uplink carrier configured to the UE by the eNodeB is not the uplink carrier adopted when the UE initiates a random access process to access a cell, the eNodeB distributes the C-RNTI on the uplink carrier configured to the UE, and the PDCCH scrambled by the C-RNTI is used for distributing dynamic PUSCH resources on the uplink carrier to the UE; if the eNodeB configures semi-static PUSCH resources for the UE on the uplink carrier configured for the UE, the eNodeB distributes SPS C-RNTI on the uplink carrier configured for the UE, and the eNodeB configures the semi-static PUSCH resources on the uplink carrier for the UE through the PDCCH scrambled by the SPS C-RNTI or instructs the UE to release the configured semi-static PUSCH resources on the uplink carrier.
2. The method for scheduling uplink carriers in a particular LTE-FDD cell as recited in claim 1, wherein,
when the UE initiates a random access process on the uplink main carrier and accesses the special LTE-FDD cell through the random access process, the eNodeB carries a temporary C-RNTI in a random access response sent to the UE, the UE stores the temporary C-RNTI as the C-RNTI after the contention resolution of the random access process, and monitors the PDCCH scrambled by the C-RNTI on the downlink carrier.
3. The method for scheduling uplink carriers in a particular LTE-FDD cell as recited in claim 1, wherein,
When the UE initiates a random access process on one uplink auxiliary carrier in the at least one uplink auxiliary carrier and accesses the special LTE-FDD cell through the random access process, the eNodeB carries a temporary C-RNTI in a random access response sent to the UE, the UE stores the temporary C-RNTI as the C-RNTI after the contention resolution of the random access process, and monitors a PDCCH scrambled by the C-RNTI on the downlink carrier.
4. A method for scheduling uplink carriers in a special LTE-FDD cell according to claim 2 or 3, characterized in that,
the PDCCH scrambled by the C-RNTI carries scheduling information of a downlink dynamic Physical Downlink Shared Channel (PDSCH) of a downlink carrier and scheduling information of an uplink dynamic Physical Uplink Shared Channel (PUSCH) on an uplink carrier adopted when a random access process is initiated to access a cell.
5. A method for scheduling uplink carriers in a special LTE-FDD cell according to claim 2 or 3, characterized in that,
when the UE initiates a random access process on the uplink main carrier and accesses the special LTE-FDD cell through the random access process, the downlink control information DCI format 0 or 4 carried by the PDCCH scrambled by the C-RNTI is the scheduling information of the dynamic PUSCH on the uplink main carrier, and the UE transmits the PUSCH on the uplink main carrier according to the scheduling information of the dynamic PUSCH on the uplink main carrier; or (b)
And when the UE initiates a random access process on one uplink auxiliary carrier in the at least one uplink auxiliary carrier, DCI format 0 or 4 carried by the PDCCH scrambled by the C-RNTI is the scheduling information of dynamic PUSCH on the uplink auxiliary carrier initiating the random access process, and the UE sends the PUSCH on the corresponding uplink auxiliary carrier according to the scheduling information of the dynamic PUSCH on the uplink auxiliary carrier.
6. The method for scheduling uplink carriers in a particular LTE-FDD cell as recited in claim 1, wherein,
when the eNodeB configures the UE with semi-static PDSCH resources on the downlink carrier:
if SPS C-RNTI is not configured for the UE on an uplink carrier adopted when the UE initiates a random access process to access the cell, the eNodeB allocates SPS C-RNTI to a downlink carrier, a PDCCH scrambled by the SPS C-RNTI is used for allocating semi-static PDSCH resources on the downlink carrier or indicating the UE to release the configured semi-static PDSCH resources, and the SPS C-RNTI is also used for allocating the semi-static PUSCH resources or releasing the semi-static PUSCH resources on the uplink carrier adopted when the UE initiates the random access process to access the cell;
if SPS C-RNTI is configured for the UE on an uplink carrier adopted when the UE initiates a random access process to access the cell, the eNodeB uses the SPS C-RNTI to allocate semi-static PDSCH resources on a downlink carrier to the UE or instruct the UE to release the configured semi-static PDSCH resources.
7. The scheduling system of the uplink carrier in the special LTE-FDD cell is characterized in that the special LTE-FDD cell comprises a pair of FDD carriers, the pair of FDD carriers comprises an uplink main carrier and a downlink carrier, and the special LTE-FDD cell also comprises at least one uplink auxiliary carrier; the uplink main carrier and the at least one uplink auxiliary carrier are both uplink carriers; the system comprises a user terminal (UE) and a base station (eNodeB), wherein:
the UE is used for reporting the wireless capability information of the UE to the eNodeB, and the wireless capability information of the UE carries the capability information supporting the special LTE-FDD cell;
the eNodeB is used for configuring one or more uplink carriers for the UE according to the wireless capability information of the UE, and sending configuration information of the one or more uplink carriers and downlink carrier configuration information configured for the UE to the UE; different uplink carrier configuration information is allocated to different uplink carriers, so that each uplink carrier uses dedicated uplink carrier configuration information to schedule resources of the uplink carrier, wherein the uplink carrier configuration information comprises: C-RNTI or SPS C-RNTI; the C-RNTI or SPS C-RNTI of each uplink carrier is different;
The UE is further used for monitoring a physical downlink control channel PDCCH scrambled by a C-RNTI or SPS C-RNTI corresponding to the uplink carrier on the downlink carrier of the cell according to the configuration information of the corresponding uplink carrier for each uplink carrier configured to the UE so as to capture the scheduling information of a physical uplink shared channel PUSCH on the uplink carrier;
when an uplink carrier configured to the UE by the eNodeB initiates a random access process for the UE to access an uplink carrier adopted when the cell, if the eNodeB configures semi-static PUSCH resources for the UE on the carrier, the eNodeB distributes SPS C-RNTI on the carrier to the UE; the eNodeB configures semi-static PUSCH resources on the uplink carrier for the UE through the PDCCH scrambled by the SPS C-RNTI or instructs the UE to release the configured semi-static PUSCH resources on the uplink carrier; the eNodeB allocates semi-static PDSCH resources to the UE on a downlink carrier or instructs the UE to release the semi-static PDSCH resources on the downlink carrier based on the SPS C-RNTI; or (b)
When the uplink carrier configured to the UE by the eNodeB is not the uplink carrier adopted when the UE initiates a random access process to access a cell, the eNodeB distributes the C-RNTI on the uplink carrier configured to the UE, and the PDCCH scrambled by the C-RNTI is used for distributing dynamic PUSCH resources on the uplink carrier to the UE; if the eNodeB configures semi-static PUSCH resources for the UE on the uplink carrier configured for the UE, the eNodeB distributes SPS C-RNTI on the uplink carrier configured for the UE, and the eNodeB configures the semi-static PUSCH resources on the uplink carrier for the UE through the PDCCH scrambled by the SPS C-RNTI or instructs the UE to release the configured semi-static PUSCH resources on the uplink carrier.
8. The scheduling system of uplink carriers in a special LTE-FDD cell according to claim 7, characterized in that,
when the UE initiates a random access process on the uplink main carrier, accessing the special LTE-FDD cell through the random access process:
the eNodeB is used for carrying a temporary C-RNTI in a random access response sent to the UE;
the UE is used for storing the temporary C-RNTI as the C-RNTI after the contention resolution in the random access process, and monitoring the PDCCH scrambled by the C-RNTI on the downlink carrier.
9. The scheduling system of uplink carriers in a special LTE-FDD cell according to claim 7, characterized in that,
when the UE initiates a random access process on one uplink auxiliary carrier in the at least one uplink auxiliary carrier, accessing the special LTE-FDD cell through the random access process:
the eNodeB is used for carrying a temporary C-RNTI in a random access response sent to the UE;
the UE is used for storing the temporary C-RNTI as the C-RNTI after the contention resolution in the random access process, and monitoring the PDCCH scrambled by the C-RNTI on the downlink carrier.
10. The scheduling system for uplink carriers in a special LTE-FDD cell according to claim 8 or 9, characterized in that,
The PDCCH scrambled by the C-RNTI carries scheduling information of a downlink dynamic Physical Downlink Shared Channel (PDSCH) of a downlink carrier and scheduling information of an uplink dynamic Physical Uplink Shared Channel (PUSCH) on an uplink carrier adopted when a random access process is initiated to access a cell.
11. The scheduling system for uplink carriers in a special LTE-FDD cell according to claim 8 or 9, characterized in that,
when the UE initiates a random access process on the uplink main carrier and accesses the special LTE-FDD cell through the random access process, a downlink control information DCI format 0 or 4 carried by the PDCCH scrambled by the C-RNTI is scheduling information of a dynamic PUSCH on the uplink main carrier; the UE is configured to send PUSCH on the uplink primary carrier according to scheduling information of dynamic PUSCH on the uplink primary carrier; or (b)
When the UE initiates a random access process on one uplink auxiliary carrier in the at least one uplink auxiliary carrier, DCI format 0 or 4 carried by the PDCCH scrambled by the C-RNTI is the scheduling information of dynamic PUSCH on the uplink auxiliary carrier initiating the random access process; and the UE is used for sending the PUSCH on the corresponding uplink auxiliary carrier according to the scheduling information of the dynamic PUSCH on the uplink auxiliary carrier.
12. The scheduling system of uplink carriers in a special LTE-FDD cell according to claim 7, characterized in that,
When the eNodeB configures the UE with semi-static PDSCH resources on the downlink carrier:
if SPS C-RNTI is not configured for the UE on an uplink carrier adopted when the UE initiates a random access process to access the cell, the eNodeB is used for distributing SPS C-RNTI to a downlink carrier, a PDCCH scrambled by the SPS C-RNTI is used for distributing semi-static PDSCH resources on the downlink carrier or indicating the UE to release the configured semi-static PDSCH resources, and the SPS C-RNTI is also used for distributing the semi-static PUSCH resources or releasing the semi-static PUSCH resources on the uplink carrier adopted when the UE initiates the random access process to access the cell;
if SPS C-RNTI is configured for the UE on an uplink carrier adopted when the UE initiates a random access process to access the cell, the eNodeB is used for distributing semi-static PDSCH resources on a downlink carrier or indicating the UE to release the configured semi-static PDSCH resources by using the SPS C-RNTI.
CN201711420433.2A 2017-12-25 2017-12-25 Scheduling method and system for uplink carrier in special LTE-FDD cell Active CN109963338B (en)

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