WO2015106561A1 - Procédé et appareil de traitement de ressources physiques à accès aléatoire - Google Patents

Procédé et appareil de traitement de ressources physiques à accès aléatoire Download PDF

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Publication number
WO2015106561A1
WO2015106561A1 PCT/CN2014/083749 CN2014083749W WO2015106561A1 WO 2015106561 A1 WO2015106561 A1 WO 2015106561A1 CN 2014083749 W CN2014083749 W CN 2014083749W WO 2015106561 A1 WO2015106561 A1 WO 2015106561A1
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WO
WIPO (PCT)
Prior art keywords
uplink
downlink subframe
subframe
downlink
random access
Prior art date
Application number
PCT/CN2014/083749
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English (en)
Chinese (zh)
Inventor
黄河
杜忠达
Original Assignee
中兴通讯股份有限公司
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Publication of WO2015106561A1 publication Critical patent/WO2015106561A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • 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

Definitions

  • the present invention relates to the field of communications, and in particular to a method and an apparatus for processing a physical random access resource.
  • LTE Long Term Evolution
  • TDD Time Division Duplex
  • the length is 10 ms, and includes 10 subframes of length lms.
  • Each subframe can be configured as uplink, downlink, or as a special subframe.
  • the ratio of the uplink and downlink subframes defined in TS 36.211 is as follows. Table 1 shows: Table 1: Up and down subframe ratio
  • the uplink and downlink subframe ratios used by each cell were statically configured and broadcast in system messages.
  • the UE learns the uplink and downlink subframe ratio of the cell by receiving the system message.
  • the UE obtains the corresponding uplink and downlink subframe ratios according to the PRACH Configuration Index, which is also broadcast in the system message, in the table in the query protocol TS 36.211 (as shown in Table 2 below).
  • Specific configuration information of the PRACH resource (the specific configuration is composed of a quaternary group, indicating the time and frequency domain location information of the PRACH resource, etc.).
  • Table 2 PRACH resource time-frequency domain mapping table
  • the same PRACH configuration index indicates different PRACH resource configuration 4-tuples in different uplink and downlink subframe ratios ( That is, different PRACH resource locations are indicated).
  • fixed uplink and downlink subframe ratios are gradually difficult to meet market demands.
  • the operator finds that the uplink and downlink traffic flows in the cell change dynamically with time, and use fixed or slow changes in the cell (reconfigure the upper and lower sub-cells of the cell by deleting or constructing a cell, etc.)
  • the frame ratio and the subframe ratio of the UE notified by the system message are difficult to effectively use the radio resources.
  • the TDD subframe dynamic ratio adjustment technology is introduced in the LTE TDD technology.
  • the eNB can dynamically notify the UE of the change of the ratio of the uplink and downlink subframes through the physical layer signaling, and broadcast the system message.
  • Some uplink subframes in the downlink configuration are used as downlink subframes (dynamic switching in the current seven uplink and downlink subframe ratios).
  • the old UE of the existing network cannot support the dynamic subframe ratio adjustment technology introduced by the new version protocol.
  • the existing UE still uses the uplink and downlink subframe ratio broadcasted in the system message.
  • the network side cannot dynamically adjust the original uplink subframe to the downlink.
  • the old version of the UE is scheduled.
  • the timing of the transmission of the PRACH signal is determined by the UE itself, and the time and frequency domain resources used by the PRACH are selected according to the economic PRACH configuration index according to the uplink and downlink subframe ratios in the system message, in order to avoid the old version of the UE pair.
  • the network side needs to configure the PRACH configuration index to ensure that the subframe where the PRACH resource is calculated by the old version of the UE according to Table 2 is still an uplink subframe after being dynamically adjusted (not dynamically adjusted to downlink).
  • This limitation greatly reduces the available PRACH configuration index in the cell, which poses a great challenge to the planning of PRACH access resources in network planning optimization. Therefore, in the related art, in order to avoid interference between old and new UEs, the random physical access channel configuration index is greatly limited, thereby greatly increasing the difficulty of network planning.
  • the present invention provides a method and an apparatus for processing a physical random access resource, so as to at least solve the problem in the related art to avoid interference between old and new UEs, which greatly limits the configuration index of the random physical access channel, thereby greatly increasing the number of indexes.
  • a method for processing a physical random access resource including: determining, by a base station, whether a physical random access resource exists in a downlink subframe dynamically adjusted by an uplink-downlink subframe ratio; The base station processes the downlink subframe in which the physical random access resource exists as an uplink subframe; and/or, if the determination result is negative, the base station will not have the physical random access
  • the downlink subframe of the resource is processed as a downlink subframe.
  • the method further includes: the base station adopts physical layer signaling and/or media access control The layer MAC signaling notifies the terminal UE to dynamically adjust the uplink and downlink subframe ratio.
  • the physical random access resource is a resource used by the terminal UE to send a physical random access channel PRACH prefix.
  • the determining, by the base station, whether the downlink subframe of the uplink and downlink subframes is dynamically adjusted has the physical random access resource, including: according to a cell uplink and downlink subframe ratio broadcasted in a system message, and a physical The random access resource configuration information is used to calculate the subframe in which the physical random access resource is located, and whether the subframe in which the calculated physical random access resource is located includes the downlink subframe after the uplink and downlink subframe ratio is dynamically adjusted.
  • the downlink subframe after the dynamic adjustment of the uplink and downlink subframe ratio is determined to be The physical random access resource exists, and/or, in the case that the calculated subframe in which the physical random access resource is located does not include the downlink subframe after the uplink and downlink subframe ratio is dynamically adjusted, The downlink subframe that is dynamically adjusted in the row subframe ratio does not have the physical random access resource.
  • the base station processes the downlink subframe in which the physical random access resource exists as an uplink subframe, and includes at least one of the following: the base station does not send a physical downlink control channel PDCCH on the uplink subframe; Not transmitting the physical downlink shared channel PDSCH on the uplink subframe; the base station receiving a physical uplink control channel PUCCH on the uplink subframe; the base station receiving a physical uplink shared channel PUSCH in the uplink subframe; In the case that the physical random access resource is allocated on the uplink subframe, the base station receives the physical random access channel PRACH prefix in the uplink subframe.
  • the base station processes the downlink subframe in which the physical random access resource does not exist as a downlink subframe, and includes at least one of the following: the base station does not receive a physical uplink control channel PUCCH on the downlink subframe; The base station does not receive the physical uplink shared channel PUSCH on the downlink subframe; the base station does not receive the physical random access channel PRACH prefix in the downlink subframe; the base station sends the physical downlink control channel PDCCH on the downlink subframe. The base station transmits a physical downlink shared channel PDSCH on the downlink subframe.
  • the processing, by the base station, the downlink subframe in which the physical random access resource exists as the uplink subframe includes: dynamically adjusting the ratio of uplink and downlink subframes when the physical random access resource is allocated
  • the base station processes the first predetermined downlink subframe or the first predetermined downlink subframe in which only the physical random access resource is generated as the uplink Subframe.
  • the base station determines whether the downlink random subframe dynamically adjusted by the uplink-downlink subframe ratio has the physical random access resource: after determining the uplink-downlink subframe ratio Determining, in the uplink sub-frame, the downlink sub-frame in the downlink sub-frame, and the downlink sub-frame in the uplink-downlink sub-frame ratio Determining each of the downlink subframes in the set; determining the downlink subframe in the dynamic uplink and downlink subframe relationship included in the set after determining the potential dynamic adjustment of the uplink and downlink subframe matching set.
  • the base station determines whether the downlink subframe of the uplink-downlink subframe ratio is dynamically adjusted, whether the physical random access resource exists
  • the downlink subframe that is determined by the base station is: broadcast in a system message
  • the indication in the uplink subframe ratio is the uplink, but is changed to the downlink subframe after the dynamic adjustment, or all the downlink subframes after the uplink and downlink subframes are dynamically adjusted.
  • a method for processing a physical random access resource including: receiving, by a terminal UE, uplink and downlink subframe ratio dynamic adjustment information sent by a base station; and determining, by the UE, uplink and downlink subframe ratio dynamic adjustment Whether the downlink subframe of the subsequent downlink subframe has a physical random access resource; if the judgment result is yes, the UE processes the downlink subframe in which the physical random access resource exists as an uplink subframe; and/or, in determining If the result is no, the UE processes the downlink subframe in which the physical random access resource does not exist as a downlink subframe.
  • the UE receives uplink and downlink subframe ratio dynamic adjustment information sent by the base station by using physical layer signaling and/or medium access control layer MAC signaling.
  • the physical random access resource is a resource used by the UE to send a physical random access channel PRACH prefix.
  • the determining, by the UE, whether the downlink subframe that is dynamically adjusted in the uplink-downlink subframe ratio has the physical random access resource includes: according to a cell uplink and downlink subframe ratio broadcasted in the system message, and a physical Calculating, by using the random access resource configuration information, the subframe in which the physical random access resource is located; determining whether the calculated sub-frame in which the physical random access resource is located includes the downlink after the dynamic adjustment of the uplink-downlink subframe ratio Sub-frame; determining that the uplink and downlink subframe ratios are dynamically adjusted in a case where the subframe in which the calculated physical random access resource is located includes any one of the downlink subframes in which the uplink-downlink subframe ratio is dynamically adjusted
  • the subsequent downlink subframe has the physical random access resource, and/or, after determining that the calculated subframe in which the physical random access resource is located does not include uplink and downlink subframe ratio dynamic adjustment In the case of the downlink subframe, it is determined that the downlink sub
  • the UE processes the downlink subframe in which the physical random access resource exists as an uplink subframe, and includes at least one of the following: the UE does not receive a physical downlink control channel PDCCH on the uplink subframe; Not receiving the physical downlink shared channel (PDSCH) on the uplink subframe; the UE transmitting a physical uplink control channel (PUCCH) on the uplink subframe; the UE transmitting a physical uplink shared channel PUSCH on the uplink subframe; The UE sends a physical random access channel PRACH prefix on the uplink subframe.
  • PDCCH physical downlink control channel
  • PUCCH physical uplink control channel
  • the UE processes the downlink subframe in which the physical random access resource does not exist as a downlink subframe, and includes at least one of the following: the UE does not send a physical uplink control channel PUCCH on the downlink subframe; The UE does not send the physical uplink shared channel PUSCH on the downlink subframe; the UE does not send the physical random access channel PRACH prefix in the downlink subframe; the UE receives the physical downlink control channel PDCCH in the downlink subframe. The UE receives the physical downlink shared channel PDSCH on the downlink subframe.
  • the processing, by the UE, the downlink subframe that is in the physical random access resource to the uplink subframe includes: dynamically adjusting the ratio of the uplink and downlink subframes when the physical random access resource is allocated After the second In a case where the downlink subframe is scheduled, the UE processes the second predetermined downlink subframe or the second predetermined downlink subframe in which only the physical random access resource is generated as the uplink subframe.
  • the UE determines whether the downlink subframe in the uplink-downlink subframe ratio dynamically adjusts whether the physical random access resource exists: after receiving the uplink and downlink subframe ratio dynamics After the command is adjusted, each downlink subframe in the uplink subframe of the uplink and downlink subframes is dynamically determined. After receiving the uplink and downlink subframe ratio, the uplink and downlink subframes are dynamically adjusted. Determining each downlink subframe in the downlink subframe; determining the downlink subframe in the dynamic uplink and downlink subframe relationship included in the set after receiving the potential dynamic adjustment of the uplink and downlink subframe matching set.
  • the downlink subframe range that the UE determines is: in a system message.
  • the indication in the uplink subframe ratio of the broadcast is uplink, but after the dynamic adjustment, the subframe is changed to the downlink subframe, or all the downlink subframes after the uplink and downlink subframes are dynamically adjusted.
  • a physical random access resource processing apparatus which is located in a base station, and includes: a first determining module, configured to determine whether a downlink subframe dynamically adjusted by the uplink-downlink subframe ratio has physicality a random access resource exists; the first processing module is configured to: when the determination result of the first determining module is yes, process the downlink subframe in which the physical random access resource exists as an uplink subframe; and/or The second processing module is configured to process the downlink subframe in which the physical random access resource does not exist as a downlink subframe if the determination result of the first determining module is negative.
  • the apparatus further includes: a notification module, configured to notify the terminal UE to perform uplink and downlink subframe ratio dynamic adjustment by using physical layer signaling and/or medium access control layer MAC signaling.
  • the first determining module includes: a first calculating unit, configured to calculate, according to the uplink and downlink subframe ratio of the cell broadcasted in the system message, and the physical random access resource configuration information, where the physical random access resource is located a first determining unit, configured to determine, in the subframe in which the calculated physical random access resource is located, the downlink subframe that is dynamically adjusted in the uplink and downlink subframe ratio; the first determining unit is configured to be If the calculated subframe in which the physical random access resource is located includes any downlink subframe that is dynamically adjusted in the uplink and downlink subframe ratio, the downlink subframe after the uplink and downlink subframe ratio is dynamically adjusted is determined.
  • the physical random access resource exists, and/or the second determining unit is configured to: after the calculated subframe in which the physical random access resource is located does not include the uplink and downlink subframe ratio dynamically adjusted downlink In the case of a subframe, it is determined that the downlink subframe that is dynamically adjusted in the uplink and downlink subframe ratio does not have the physical random access resource.
  • the first processing module is further configured to process the downlink subframe in which the physical random access resource exists as an uplink subframe, including at least one of: not transmitting the physical downlink control channel on the uplink subframe PDCCH; not transmitting the physical downlink shared channel PDSCH on the uplink subframe; receiving a physical uplink control channel PUCCH on the uplink subframe; receiving a physical uplink shared channel PUSCH on the uplink subframe; When the physical random access resource is allocated, the physical random access channel PRACH prefix is received on the uplink subframe.
  • the second processing module is further configured to process the downlink subframe in which the physical random access resource does not exist as a downlink subframe, including at least one of the following: not receiving the physical uplink control channel on the downlink subframe Not receiving the physical uplink shared channel PUSCH on the downlink subframe; not receiving the physical random access channel PRACH prefix on the downlink subframe; transmitting the physical downlink control channel PDCCH on the downlink subframe; The physical downlink shared channel PDSCH is transmitted on the subframe.
  • the first processing module includes: a first processing unit, configured to be configured to distribute the physical random access resources in a first predetermined downlink subframe after dynamically adjusting the uplink and downlink subframe ratios And processing, by using the first predetermined downlink subframe or the first predetermined downlink subframe that only the physical random access resource is present, into the uplink subframe.
  • a first processing unit configured to be configured to distribute the physical random access resources in a first predetermined downlink subframe after dynamically adjusting the uplink and downlink subframe ratios And processing, by using the first predetermined downlink subframe or the first predetermined downlink subframe that only the physical random access resource is present, into the uplink subframe.
  • the first determining module is further configured to: at least one of the following occasions, the base station determining whether the downlink random subframe dynamically adjusted by the uplink-downlink subframe ratio has the physical random access resource: Determining, in the downlink sub-frame, the downlink sub-frames in the downlink sub-frames that are dynamically adjusted in the uplink-downlink sub-frame ratio, and determining the uplink and downlink sub-frames before transmitting the uplink-downlink sub-frame ratio Determining each downlink subframe in the downlink subframe after the dynamic adjustment; determining the downlink subframe in the dynamic uplink and downlink subframe relationship included in the set after determining the potential dynamic adjustment of the uplink and downlink subframe matching set Make a judgment.
  • a physical random access resource processing apparatus which is located in a terminal, and includes: a first receiving module, configured to receive uplink and downlink subframe ratio dynamic adjustment information sent by a base station; a module, configured to determine whether there is a physical random access resource in the downlink subframe dynamically adjusted by the uplink-downlink subframe ratio; and the third processing module is configured to: when the judgment result of the second determining module is yes, The downlink subframe of the physical random access resource is processed as an uplink subframe; and/or the fourth processing module is configured to: if the determination result of the second determining module is negative, the The downlink subframe of the physical random access resource is processed as a downlink subframe.
  • the first receiving module is further configured to receive uplink and downlink subframe ratio dynamic adjustment information sent by the base station by using physical layer signaling and/or medium access control layer MAC signaling.
  • the second determining module includes: a second calculating unit, configured to calculate, according to the uplink and downlink subframe ratio of the cell broadcasted in the system message, and the physical random access resource configuration information, where the physical random access resource is located a second determining unit, configured to determine that the calculated subframe in which the physical random access resource is located is The third determining unit is configured to include the uplink and downlink subframe ratio dynamics in the subframe where the calculated physical random access resource is located, where the uplink and downlink subframes are dynamically adjusted.
  • the fourth determining unit is set to be And determining, in the case that the calculated subframe in which the physical random access resource is located does not include the downlink subframe in which the uplink and downlink subframes are dynamically adjusted, determining the downlink subframe after dynamically adjusting the uplink and downlink subframe ratio The frame does not have the physical random access resource present.
  • the third processing module is further configured to process the downlink subframe in which the physical random access resource exists as an uplink subframe, including at least one of the following: the UE does not receive physical downlink in the uplink subframe a control channel PDCCH; the UE does not receive a physical downlink shared channel PDSCH in the uplink subframe; the UE transmits a physical uplink control channel PUCCH in the uplink subframe; the UE sends a physical in the uplink subframe Uplink shared channel PUSCH; the UE sends a physical random access channel PRACH prefix on the uplink subframe.
  • the fourth processing module is further configured to process the downlink subframe in which the physical random access resource does not exist as a downlink subframe, including at least one of the following: the UE does not send physical on the downlink subframe Uplink control channel PUCCH; the UE does not send a physical uplink shared channel PUSCH on the downlink subframe; the UE does not send a physical random access channel PRACH prefix on the downlink subframe; the UE is in the downlink subframe Receiving a physical downlink control channel PDCCH; the UE receiving a physical downlink shared channel PDSCH in the downlink subframe.
  • the third processing module includes: a second processing unit, configured to be configured to distribute the physical random access resources in a second predetermined downlink subframe after dynamically adjusting the uplink and downlink subframe ratios And processing the second predetermined downlink subframe or the second predetermined downlink subframe in which only the physical random access resource is generated as the uplink subframe.
  • the second determining module is further configured to determine, at least one of the following occasions, whether the downlink subframe that is dynamically adjusted in the uplink-downlink subframe ratio has the physical random access resource: After the uplink and downlink subframes are matched with the dynamic adjustment command, each downlink subframe in the downlink subframe adjusted by the uplink and downlink subframes is dynamically determined.
  • the uplink and downlink subframes are matched. Determining each downlink subframe in the downlink subframe after the dynamic adjustment; receiving the downlink component in the dynamic uplink and downlink subframe relationship included in the set after receiving the potential dynamic adjustment uplink and downlink subframe matching set The frame is judged.
  • the base station determines whether there is a physical random access resource in the downlink subframe dynamically adjusted by the uplink and downlink subframe ratio; if the determination result is yes, the base station will have the physical random access resource
  • the downlink subframe is processed as an uplink subframe; and/or, in a case where the determination result is negative, the base station will not have the
  • the downlink subframe of the physical random access resource is processed as a downlink subframe, which solves the problem in the related art to avoid interference between the old and new UEs, and greatly limits the configuration of the random physical access channel configuration index, thereby greatly increasing the difficulty of network planning.
  • FIG. 4 is a block diagram of a preferred structure of a physical random access resource processing apparatus according to an embodiment of the present invention
  • FIG. 4 is a block diagram of a preferred structure of a physical random access resource processing apparatus 1 according to an embodiment of the present invention
  • FIG. 6 is a block diagram showing a preferred structure of the first processing module 34 in the physical random access resource processing apparatus 1 according to an embodiment of the present invention
  • FIG. 8 is a block diagram showing a preferred structure of a second random access module 74 in a physical random access resource processing apparatus according to an embodiment of the present invention
  • FIG. 4 is a block diagram of a preferred structure of a physical random access resource processing apparatus 1 according to an embodiment of the present invention
  • FIG. 6 is a block diagram showing a preferred structure of the first processing module 34 in the physical random access resource processing apparatus 1 according to an embodiment of the present
  • FIG. 10 is a diagram of the present invention. The method selected from the first embodiment.
  • FIG. BEST MODE FOR CARRYING OUT THE INVENTION the present invention will be described in detail with reference to the accompanying drawings. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict.
  • FIG. 1 is a flowchart of a physical random access resource processing method according to an embodiment of the present invention. As shown in FIG.
  • Step S102 The base station determines whether there is a physical random access resource in the downlink subframe that is dynamically adjusted in the uplink-downlink subframe ratio.
  • step S104 if the determination result is yes, the base station will have a downlink of the physical random access resource.
  • the frame processing is an uplink subframe; and/or, in a case where the determination result is no, the base station processes the downlink subframe in which the physical random access resource does not exist as the downlink subframe.
  • the downlink subframe that does not have the physical random access resource is processed into the downlink subframe by using the downlink subframe that has the physical random access resource as the uplink subframe, and the related technology is compared with the related technology.
  • the random physical access channel configuration index is greatly limited, thereby greatly increasing the difficulty of network planning, by directly connecting the physical random
  • the downlink subframe of the incoming resource is processed as an uplink subframe, which not only effectively reduces the configuration limitation of the random access resource when the subframe ratio adjustment technology is started, but also greatly simplifies the network planning difficulty.
  • the base station may notify the terminal UE to dynamically adjust the uplink-downlink subframe ratio in multiple manners, for example, The base station may notify the terminal UE to perform uplink and downlink subframe ratio dynamic adjustment through physical layer signaling and/or media access control layer MAC signaling.
  • the physical random access resource is a resource used by the terminal UE to send a physical random access channel PRACH prefix. The base station can determine whether there is a physical random access resource in the downlink subframe of the uplink and downlink subframes, and the method can also adopt multiple manners.
  • the base station according to the uplink and downlink subframe ratio of the cell broadcasted in the system message, and The physical random access resource configuration information is used to calculate a subframe in which the physical random access resource is located; and then, the subframe in which the calculated physical random access resource is located includes the downlink subframe in which the uplink and downlink subframe ratio is dynamically adjusted; In the case that the calculated sub-frame of the physical random access resource includes any downlink sub-frames that are dynamically adjusted in the uplink-downlink subframe ratio, the downlink sub-frames that are dynamically adjusted in the uplink-downlink subframe ratio are determined to be physically random.
  • the downlink subframe does not have physical random access resources.
  • the meaning of the base station processing the downlink subframe of the physical random access resource as the uplink subframe may include at least one of the following: the base station does not send the physical downlink control channel PDCCH in the uplink subframe; the base station does not send the physical downlink in the uplink subframe.
  • the shared channel PDSCH; the base station may receive the physical uplink control channel PUCCH in the uplink subframe; the base station may receive the physical uplink shared channel PUSCH in the uplink subframe; allocate on the uplink subframe In the case of a physical random access resource, the base station may also receive a physical random access channel PRACH prefix on the uplink subframe.
  • the meaning of the downlink subframe that the base station does not have the physical random access resource as the downlink subframe may include at least one of the following: the base station may not receive the physical uplink control channel PUCCH on the downlink subframe; the base station does not receive the physical uplink on the downlink subframe The shared channel PUSCH; the base station does not receive the physical random access channel PRACH prefix on the downlink subframe; the base station may (when there is a need, for example, when there is data transmission), send the physical downlink control channel PDCCH on the downlink subframe; the base station may When there is a demand, for example, when there is data transmission, the physical downlink shared channel PDSCH is transmitted on the downlink subframe.
  • the base station may use different processing modes to process the downlink subframes of the physical random access resources into uplink subframes, for example, when the physical random access resources are distributed in the uplink and downlink subframe ratio dynamics.
  • the base station processes the first predetermined downlink subframe or the first predetermined downlink subframe in which only the physical random access resource is present as the uplink subframe.
  • the base station may determine at multiple timings, for example, at least one of the following timings may be determined.
  • FIG. 2 is a flowchart of a physical random access resource processing method 2 according to an embodiment of the present invention. As shown in FIG. 2, the process includes the following steps.
  • Step S202 The terminal UE receives the uplink and downlink subframe ratio dynamic adjustment information sent by the base station.
  • Step S204 The UE determines whether the downlink subframe in the uplink and downlink subframe ratio is dynamically adjusted to have physical random access resources.
  • Step S206 In the case that the determination result is yes, the UE processes the downlink subframe in which the physical random access resource exists as an uplink subframe; and/or, if the determination result is no, the UE does not have physical random access.
  • the downlink subframe of the resource is processed as a downlink subframe.
  • the downlink subframe that does not have the physical random access resource is processed into the downlink subframe by processing the downlink subframe in which the physical random access resource exists as the uplink subframe.
  • the random physical access channel configuration index is greatly limited, thereby greatly increasing the difficulty of network planning.
  • the downlink subframe of the physical random access resource is directly processed into an uplink subframe, which not only effectively reduces the configuration limitation of the random access resource when the subframe ratio adjustment technology is started, but also greatly simplifies the network planning difficulty.
  • the UE may also receive uplink and downlink subframe ratio dynamic adjustment information sent by the base station by using physical layer signaling and/or medium access control layer MAC signaling.
  • the physical random access resource is a resource used by the UE to send a PRACH prefix of the physical random access channel.
  • the UE performs processing corresponding to the base station side, and the UE determines whether the downlink subframe of the uplink and downlink subframe ratio is dynamically adjusted to have physical random access resources, including: according to the uplink and downlink subframe ratio of the cell broadcasted in the system message, and the physical The random access resource configuration information is used to calculate a subframe in which the physical random access resource is located; determining whether the calculated subframe in which the physical random access resource is located includes a downlink subframe in which the uplink-downlink subframe ratio is dynamically adjusted; In the case where the subframe in which the physical random access resource is located contains any downlink subframes in which the uplink and downlink subframes are dynamically adjusted, it is determined that the downlink subframes dynamically adjusted in the uplink and downlink subframes have physical random access.
  • the resource is present, and/or, after determining that the calculated subframe in which the physical random access resource is located does not include the downlink subframe in which the uplink and downlink subframe ratio is dynamically adjusted, determining that the uplink and downlink subframe ratio is dynamically adjusted There are no physical random access resources in the downlink subframe.
  • the UE needs to process the downlink subframe of the physical random access resource as the uplink subframe, and the meaning of the uplink subframe includes: at least one of the following: the UE does not receive the physical downlink control channel PDCCH on the uplink subframe; The physical downlink shared channel PDSCH is not received on the uplink subframe; the UE may send the physical uplink control channel PUCCH on the uplink subframe (whether or not according to eNB configuration and scheduling); the UE may (whether or not the transmission is based on eNB configuration and scheduling) The physical uplink shared channel PUSCH is transmitted on the uplink subframe; the UE may (send only when the UE needs to send the PRACH), and send the physical random access channel PRACH prefix on the uplink subframe.
  • the meaning of the processing of the downlink subframe in which the UE does not have the physical random access resource as the downlink subframe may include at least one of the following: the UE does not send the physical uplink control channel PUCCH on the downlink subframe; the UE does not send the physical uplink share on the downlink subframe Channel PUSCH; UE does not transmit physical random access channel PRACH on downlink subframe
  • the UE may receive the physical downlink control channel PDCCH on the downlink subframe; the UE may (when there is scheduling) receive the physical downlink shared channel PDSCH on the downlink subframe.
  • the UE may also process the downlink subframes that have the physical random access resources into the uplink subframes, for example, when the physical random access resources are distributed in the uplink and downlink subframes.
  • the UE processes the second predetermined downlink subframe or the second predetermined downlink subframe in which only the physical random access resource is present as the uplink subframe.
  • the UE may determine that the uplink subframe of the uplink and downlink subframes has a physical random access resource, and may perform the physical random access resource at multiple times.
  • Determining, for each downlink sub-frame in the downlink sub-frame that is dynamically adjusted in the uplink-downlink sub-frame ratio; and also performing downlink sub-frame dynamic adjustment on the uplink-downlink sub-frame ratio after receiving the uplink-downlink sub-frame ratio The determining is performed on each of the downlink sub-frames in the set, and the downlink sub-frame in the dynamic uplink-downlink subframe relationship included in the set is determined after receiving the potential dynamic adjustment of the uplink and downlink subframe matching set.
  • the downlink subframe range that the UE determines may also be determined according to a specific situation, for example, may be a system message.
  • the indication in the uplink subframe ratio of the broadcast is uplink, but is changed to the downlink subframe after the dynamic adjustment; or all the downlink subframes dynamically adjusted in the uplink and downlink subframes.
  • a physical random access resource processing apparatus is also provided, which is used to implement the foregoing embodiments and preferred embodiments, and has not been described again.
  • FIG. 3 is a structural block diagram of a physical random access resource processing apparatus according to an embodiment of the present invention. As shown in FIG. 3, the apparatus is located in a base station, and includes a first determining module 32, a first processing module 34, and/or a second. Processing module 36, the device will be described below.
  • the first determining module 32 is configured to determine whether there is a physical random access resource in the downlink subframe that is dynamically adjusted in the uplink and downlink subframe ratio; the first processing module 34 is connected to the first determining module 32, and is configured to be in the first When the judgment result of the determination module is yes, the downlink subframe in which the physical random access resource exists is processed as an uplink subframe; the second processing module 36 is connected to the first determining module 32, and is set to be in the first judgment. If the result of the determination in the module is no, the downlink subframe in which the physical random access resource does not exist is processed as a downlink subframe.
  • FIG. 4 is a block diagram of a preferred structure of a physical random access resource processing apparatus according to an embodiment of the present invention.
  • the apparatus includes a notification module 42 and a lower part, as shown in FIG.
  • the notification module 42 will be described.
  • the notification module 42 is connected to the first determining module 32, and is configured to notify the terminal UE to dynamically adjust the uplink and downlink subframe ratio by using physical layer signaling and/or medium access control layer MAC signaling.
  • FIG. 5 is a block diagram of a preferred structure of the first determining module 32 in the physical random access resource processing apparatus according to the embodiment of the present invention.
  • the first determining module 32 includes: a first calculating unit 52, a first The determining unit 54 and the first determining unit 56 and/or the second determining unit 58 describe the first determining module 32 below.
  • the first calculating unit 52 is configured to calculate a subframe in which the physical random access resource is located according to the uplink and downlink subframe ratio of the cell broadcasted in the system message, and the physical random access resource configuration information; the first determining unit 54 is connected to the foregoing The first calculating unit 52 is configured to determine whether the subframe in which the calculated physical random access resource is located includes a downlink subframe that is dynamically adjusted in the uplink and downlink subframe ratio; the first determining unit 56 is connected to the first determining The unit 54 is configured to determine, after the calculated subframe where the physical random access resource is located, any downlink subframe that is dynamically adjusted by the uplink and downlink subframe ratio, determine the uplink of the uplink and downlink subframe ratio dynamically adjusted.
  • the subframe has a physical random access resource, and/or the second determining unit 58 is connected to the first determining unit 54 and configured to: the subframe in which the calculated physical random access resource is located does not include the uplink and downlink subframe.
  • the downlink subframe that is dynamically adjusted it is determined that there is no physical random access resource in the downlink subframe after the dynamic adjustment of the uplink and downlink subframe ratio.
  • the first processing module 34 is further configured to process the downlink subframe in which the physical random access resource exists as an uplink subframe, including at least one of: not transmitting the physical downlink control channel PDCCH on the uplink subframe; not in the uplink subframe
  • the physical downlink shared channel (PDSCH) is transmitted on the frame; the physical uplink control channel (PUCCH) is received on the uplink subframe; the physical uplink shared channel (PUSCH) is received on the uplink subframe; and the physical random access resource is allocated on the uplink subframe,
  • the physical random access channel PRACH prefix is received on the uplink subframe.
  • the second processing module 36 is further configured to process the downlink subframe in which the physical random access resource does not exist as the downlink subframe, including at least one of: not receiving the physical uplink control channel PUCCH on the downlink subframe; not in the downlink sub-frame
  • the physical uplink shared channel PUSCH is received on the frame; the physical random access channel PRACH prefix is not received on the downlink subframe; the physical downlink control channel PDCCH may be sent on the downlink subframe; and the physical downlink shared channel PDSCH may be sent in the downlink subframe.
  • FIG. 6 is a block diagram of a preferred structure of a first processing module 34 in a physical random access resource processing apparatus according to an embodiment of the present invention. As shown in FIG.
  • the first processing module 34 includes: a first processing unit 62, below.
  • the first processing unit 62 will be described.
  • the first processing unit 62 is configured to: when the physical random access resource is time-divisionally distributed on the first predetermined downlink subframe after the uplink and downlink subframe ratio is dynamically adjusted, the first predetermined downlink subframe may only appear The first predetermined downlink subframe of the physical random access resource is processed as an uplink subframe.
  • the first determining module 32 is further configured to: at least one of the following occasions, the base station determines whether there is a physical random access resource in the downlink subframe that is dynamically adjusted in the uplink and downlink subframe ratio: determining the uplink and downlink subframes After the ratio is matched, each downlink subframe in the downlink subframe that is dynamically adjusted in the uplink-downlink subframe ratio is determined; the downlink subframe after the uplink-downlink subframe ratio is dynamically adjusted before the uplink-downlink subframe ratio is sent.
  • FIG. 7 is a structural block diagram of a physical random access resource processing apparatus 2 according to an embodiment of the present invention. As shown in FIG. 7, the apparatus includes The first receiving module 72, the second determining module 74, the third processing module 76, and/or the fourth processing module 78 are described below.
  • the first receiving module 72 is configured to receive the uplink and downlink subframe ratio dynamic adjustment information sent by the base station; the second determining module 74 is connected to the first receiving module 72, and is configured to determine that the uplink and downlink subframe ratios are dynamically adjusted. Whether the physical random access resource exists in the downlink subframe; the third processing module 76 is connected to the second determining module 74, and is configured to: when the judgment result of the second determining module is yes, the physical random access resource exists.
  • the downlink subframe is processed as an uplink subframe; and/or, the fourth processing module 78 is connected to the second determining module 74, and is configured to: when the determination result of the second determining module is negative, there is no physical random connection.
  • FIG. 8 is a block diagram showing a preferred structure of the second determining module 74 in the physical random access resource processing apparatus 2 according to the embodiment of the present invention.
  • the second determining module 74 includes: a second calculating unit 82, The second judging unit 84, the third determining unit 86, and/or the fourth determining unit 88, the second judging module 74 will be described below.
  • the second calculating unit 82 is configured to calculate a subframe in which the physical random access resource is located according to the uplink and downlink subframe ratio of the cell broadcasted in the system message, and the physical random access resource configuration information; the second determining unit 84 is connected to the foregoing The second calculating unit 82 is configured to determine whether the subframe in which the calculated physical random access resource is located includes a downlink subframe that is dynamically adjusted in the uplink and downlink subframe ratio; and the third determining unit 86 is connected to the second determining unit
  • the unit 84 is configured to determine, in the case that the subframe in which the calculated physical random access resource is located does not include the downlink subframe after the dynamic adjustment of the uplink and downlink subframe ratio, determine the downlink subframe after the dynamic adjustment of the uplink and downlink subframe ratio There are no physical random access resources in the frame.
  • the third processing module 76 is further configured to process the downlink subframe in which the physical random access resource exists as an uplink subframe, including at least one of the following: the UE does not receive the physical downlink control channel PDCCH on the uplink subframe; Receiving a physical downlink shared channel (PDSCH) on the uplink subframe; the UE may send the physical uplink control channel PUCCH on the uplink subframe; the UE may send the physical uplink shared channel PUSCH in the uplink subframe; the UE may send the physical random connection in the uplink subframe.
  • PDSCH physical downlink shared channel
  • the fourth processing module 78 is further configured to process the downlink subframe in which the physical random access resource does not exist as the downlink subframe, including at least one of the following: the UE does not send the physical uplink control channel PUCCH on the downlink subframe; The physical uplink shared channel PUSCH is not transmitted on the downlink subframe; the UE does not send the physical random access channel PRACH prefix on the downlink subframe; the UE receives the physical downlink control channel PDCCH in the downlink subframe; the UE may receive the physical downlink in the downlink subframe Shared channel PDSCH.
  • FIG. 9 is a block diagram showing a preferred structure of a third processing module 76 in a physical random access resource processing apparatus 2 according to an embodiment of the present invention.
  • the third processing module 76 includes: a second processing unit 92, The second processing unit 92 will be described.
  • the second processing unit 92 is configured to allocate the second predetermined downlink subframe or only when the physical random access resource is distributed on the second predetermined downlink subframe after the uplink and downlink subframe ratio is dynamically adjusted.
  • the second predetermined downlink subframe of the physical random access resource is processed as an uplink subframe.
  • the second determining module 72 is further configured to determine, at least one of the following occasions, whether the downlink subframe that is dynamically adjusted in the uplink-downlink subframe ratio has a physical random access resource: After the dynamic adjustment command is configured, each downlink subframe in the downlink subframe adjusted by the uplink and downlink subframes is dynamically determined. After receiving the uplink and downlink subframe ratio, the uplink and downlink subframe ratios are dynamically adjusted. Each downlink subframe in the downlink subframe is determined; after receiving the potential dynamic adjustment of the uplink and downlink subframe matching set, the downlink subframe in the dynamic uplink and downlink subframe relationship included in the set is determined.
  • the method for configuring a random access resource in the time-division multiplex communication system in the time-division multiplex communication system provided by the foregoing embodiment and the preferred embodiment is advantageously configured by the method. It reduces the difficulty of configuring random access resources when the gap ratio dynamic adjustment technology is started.
  • the specific implementation of the solution from the network side and the terminal UE side will be described in detail below based on the present application.
  • the method for processing the random access resource during the dynamic adjustment of the subframe includes the following steps: Step S1, e B determines whether there is a random access resource in the dynamically adjusted downlink subframe; Step S2, if the downlink subframe is determined If there is a random access resource, the eNB treats (or adjusts to) the downlink subframe of the random access resource as an uplink subframe. Otherwise, if there is no random access resource in the downlink subframe, the eNB considers (or determines) that the subframe is a downlink subframe.
  • the above-mentioned dynamic adjustment is that the eNB notifies the UE to adjust the uplink and downlink subframe ratios through physical layer signaling or Media Access Control (MAC) layer signaling.
  • MAC Media Access Control
  • the random access resource is a resource used by the UE to send a PRACH prefix (preamble).
  • the random access resource is calculated according to the uplink and downlink subframe ratio of the cell broadcasted in the system message and the PRACH configuration index broadcasted in the system message. And determining whether "there is a random access resource exists in the downlink subframe" means that the downlink subframe is included in the subframe used by the random access resource calculated above. "There is a random access resource on the downlink subframe.” The meaning is that the random access resource calculated above includes a downlink subframe. "There is no random access resource in the downlink subframe.” The meaning is that the random access resource calculated above does not include the downlink subframe.
  • the meaning of the foregoing “eNB as the uplink subframe” includes at least one of the following:
  • the eNB cannot send a downlink physical channel such as a PDCCH or a PDSCH on the subframe; the eNB can receive the physical uplink on the subframe.
  • PUCCH Physical Uplink Control Channel
  • PUSCH Physical Uplink Shared Channel
  • PRACH preamble if this subframe is configured with a random access resource (a resource for transmitting a PRACH preamble) ).
  • the meaning of "the eNB considers this subframe as a downlink subframe” includes at least one of the following:
  • the eNB cannot receive a physical channel such as a PUCCH, a PUSCH, and a random access signal (PRACH preamble) on the subframe; the eNB may be in the subframe.
  • a physical channel such as a PDCCH or a PDSCH is transmitted.
  • the eNB considers the subframe as an uplink subframe only when the random access resource occurs; For other times when the random access does not appear in the subframe, the subframe is considered to be a downlink subframe.
  • the eNB considers the subframe to be an uplink subframe.
  • the restriction is not limited to be performed before each subframe time is reached.
  • the judgment may be performed, but not limited to, at the following moments: determining before each subframe arrives; dynamically determining the judgment of each subframe after the uplink and downlink subframe relationships; and configuring the potential dynamic adjustment of the uplink and downlink subframes by using the RRC message. The judgment of the uplink and downlink conditions of the subframe when the relationship between various possible dynamic uplink and downlink subframes is compared.
  • the range of the downlink subframe that needs to be determined in the step S2 is: the uplink and downlink subframe ratio broadcasted in the system message is indicated as uplink, but is dynamically adjusted and changed to the downlink subframe.
  • the terminal side: the method for processing the random access resource during the dynamic adjustment of the subframe includes the following steps: Step S1: The UE determines whether there is a random access resource in the dynamically adjusted downlink subframe; Step S2, if it is determined on the downlink subframe If a random access resource exists, the UE uses this subframe as (or adjusts to) an uplink subframe. Otherwise, if there is no random access resource in the downlink subframe, the UE considers (determines) that the subframe is a downlink subframe.
  • the dynamic adjustment in the foregoing step S1 is that the UE receives the uplink and downlink subframe ratio adjustment commands from the e B through physical layer signaling or MAC layer signaling, and performs adjustment according to the command.
  • the random access resource in step S1 is a resource used by the UE to send the PRACH preamble.
  • the time domain location of the random access resource in the step S1 is calculated according to the ratio of the uplink and downlink subframes of the cell broadcasted in the system message and the PRACH configuration index broadcasted in the system message.
  • it is determined whether "there is a random access resource in the downlink subframe". The meaning is whether the downlink subframe is included in the subframe used by the random access resource calculated according to the foregoing.
  • the random access resource exists in the downlink subframe means that: the random access resource calculated according to the foregoing includes the downlink subframe in step S2.
  • the meaning is as follows: The random access resource calculated according to the above does not include the downlink subframe in step S2.
  • the meaning of the "UE as the uplink subframe" in the step S2 includes at least one of the following: the UE cannot receive the downlink physical channel such as the PDCCH and the PDSCH in the subframe; the UE may send the PRACH in the subframe. Preamble, if random access resources (resources required for PRACH preamble) are configured on this subframe.
  • the meaning of the "UE considers the subframe to be a downlink subframe" in the step S2 includes at least one of the following: the UE cannot send a physical channel such as a PUCCH or a PUSCH and a random access signal (PRACH preamble) on the subframe; A downlink physical channel such as a PDCCH or a PDSCH is received on the subframe.
  • the UE if the random access resource periodically appears in a dynamically adjusted downlink subframe, the UE considers the subframe as an uplink subframe only when the random access resource occurs; The access does not appear at other times in this subframe, and the subframe is considered to be a downlink subframe.
  • the UE considers that the subframe is an uplink subframe, if the random access resource periodically appears on the dynamically adjusted downlink subframe, as described in the step S2.
  • the determination in step S2 is not limited to being performed before each sub-frame time is reached. The judgment may be performed, but not limited to, at the following times: determining before each sub-frame arrives; determining the judgment of each sub-frame after receiving the command of the dynamic configuration and the downlink sub-frame relationship; receiving the potential dynamic adjustment by using the RRC message.
  • the downlink subframe that needs to be determined in the foregoing step S1 is an uplink and downlink subframe according to the system message broadcast, but is dynamically adjusted to be a downlink downlink subframe; or dynamically adjusted to be downlink downlink subframes. .
  • the above scheme can effectively reduce the use restriction of the PRACH configuration index after the configuration dynamics and the downlink subframe ratio adjustment, thereby reducing the difficulty of network planning optimization.
  • Preferred embodiments of the invention are described below.
  • FIG. 10 is a flowchart of a method according to a preferred embodiment of the present invention. As shown in FIG. 10, the process includes the following steps: Step S1002, e B is broadcasted by a system message in cell A.
  • the uplink and downlink subframe ratio of the cell (the uplink and downlink ratio index broadcasted in the system message is 0, the uplink and downlink subframe ratios corresponding to index 0 can be found in Table 1) and the random access configuration index.
  • Calculating the location of the random access resource according to the uplink and downlink subframe ratio broadcasted in the system message and the random access resource configuration index is located in subframe 4 (hereinafter abbreviated as sf4), and the random access resource appears in the system frame number. On odd-numbered radio frames (in the two consecutive 10ms radio frames, there is only one radio frame in the subframe 4 with random access resources).
  • Step S1004 The e B sends an RRC reconfiguration message to the UE, where the message indicates that the cell starts the uplink and downlink subframe ratio dynamic adjustment function, and receives the reconfiguration complete message from the UE.
  • Step S1006 The eNB sends an uplink and downlink subframe dynamic adjustment command to the UE by using physical layer signaling or MAC layer signaling, where the command indicates that the uplink and downlink subframe ratio is adjusted to index 3. The eNB determines the index 3 and the calculated random access resource location.
  • Step S1008 The eNB sends an uplink and downlink subframe dynamic adjustment command to the UE by using physical layer signaling or MAC layer signaling, where the command indicates that the uplink and downlink subframe ratio is adjusted to index 4.
  • sf 4/6/7/8/9 becomes downlink. Since the subframe sf4 contains random access resources, the eNB considers sf in this configuration. 6/7/8/9 is the downlink and sf4 is the uplink. When the eNB considers that a certain subframe is uplink, the eNB cannot schedule a downlink channel such as PDCCH VPDSCH in the subframe, but may receive an uplink channel such as a PRACH preamble and a PUCCHVPUSCH in the subframe.
  • the eNB may send a downlink channel such as PDCCH ⁇ PDSCH on the subframe, but may not receive the uplink and downlink channels such as PRACH preamble ⁇ PUCCH ⁇ PUSCH in the subframe.
  • eNB side Based on the similar process of FIG. 10: The eNB broadcasts the uplink and downlink subframe ratio of the cell through the system message in the cell A (the uplink and downlink ratio index broadcasted in the system message is 0, index 0) The corresponding uplink and downlink subframe ratios can be found in Table 1) and the random access configuration index.
  • the RRC reconfiguration message sent by the eNB to the UE where the message carries the uplink and downlink subframe ratios that may appear in the dynamic adjustment: the uplink and downlink ratio index 3 and the uplink and downlink ratio index 4, and receives the reconfiguration from the UE. Complete the message.
  • the eNB determines the calculated random access resource location for index 3 and index 4.
  • index 3 compared with the index 0 broadcasted in the system message, sf 6/7/8/9 changes from uplink to downlink, since the random access resource is in sf4, so sf 6/7/8/9
  • the eNB considers that sf 6/7/8/9 is downlink in this uplink and downlink configuration.
  • the eNB When the uplink and downlink configuration index is 4, compared with index 0, sf 4/6/7/8/9 Both become downlink, because the sf4 subframe in the radio frame with the odd frame number of the system contains random access resources, so The eNB considers that in this configuration, when the system frame number is even, sf 4/6/7/8/9 is downlink, and when the system frame number is odd, sf 6/7/8/9 is downlink, sf4 For the uplink.
  • the eNB sends an uplink and downlink subframe dynamic adjustment command to the UE, where the command indicates that the uplink and downlink subframe ratio is adjusted to index 3.
  • the eNB considers sf 6/7/8/9 to be a downlink subframe according to the judgment result in the above steps.
  • the eNB sends an uplink and downlink subframe dynamic adjustment command to the UE, and the command indicates that the uplink and downlink subframe ratio is adjusted to index 4.
  • the eNB considers that sf 4/6/7/8/9 is downlink when the system frame number is even, and sf 6/7/8/9 is downlink when the system frame number is odd.
  • Frame, sf4 is an uplink subframe.
  • the eNB considers that a certain subframe is uplink, the eNB cannot schedule a downlink channel such as PDCCH VPDSCH in the subframe, but may receive an uplink channel such as a PRACH preamble and a PUCCHVPUSCH in the subframe.
  • the eNB may send a downlink channel such as PDCCH ⁇ PDSCH on the subframe, but may not receive the uplink and downlink channels such as PRACH preamble ⁇ PUCCH ⁇ PUSCH in the subframe.
  • Preferred Embodiment 3 (UE side): Based on a similar process of FIG. 10:
  • the UE resides in the cell A, and obtains the uplink and downlink subframe ratio of the cell from the cell A system message.
  • the uplink and downlink ratio index broadcasted in the system message is 0, and the uplink and downlink subframe ratios corresponding to the index 0 are at IJ can be found in Table 1 and the random access configuration index.
  • the UE calculates that the location of the random access resource is located in the subframe 4 (hereinafter abbreviated as sf4) according to the uplink and downlink subframe allocation ratio and the random access resource configuration index received in the system message, and the random access resource appears in the system frame. On the odd-numbered radio frame (in the two consecutive 10ms radio frames, there is only one radio frame in the subframe 4 with random access resources).
  • the UE receives the RRC reconfiguration message from the eNB, and the message indicates that the cell starts the uplink and downlink subframe ratio dynamic adjustment function, and feeds back the reconfiguration complete message to the eNB.
  • the UE receives the uplink and downlink subframe dynamic adjustment commands from the eNB, and the command indicates that the uplink and downlink subframe ratio is adjusted to index 3.
  • the UE judges the index 3 and the calculated random access resource location.
  • index 3 compared with the index 0 broadcasted in the system message, sf 6/7/8/9 changes from uplink to downlink, since the random access resource is in sf4, so sf 6/7/8/9
  • the UE does not consider the sf 6/7/8/9 as the downlink subframe in this uplink and downlink configuration.
  • the UE receives the uplink and downlink subframe dynamic adjustment commands from the eNB, and the command indicates that the uplink and downlink subframe ratio is adjusted to index 4.
  • the uplink and downlink configuration index is 4, compared with index 0, sf 4/6/7/8/9 becomes the downlink, The random access resource is included in the subframe sf4, so the UE considers that sf 6/7/8/9 is downlink and sf4 is uplink in this configuration.
  • the UE may send the PRACH preamble (random access signal) and the uplink physical channel such as the PUSCH VPUCCH in the subframe; if the UE considers that the subframe is the upper and lower subframes, the UE A physical channel such as PDCCH VPDSCH may be received on this subframe.
  • Preferred Embodiment 4 (UE side): Based on a similar process of FIG. 10:
  • the UE resides in the cell A, and obtains the uplink and downlink subframe ratio of the cell from the cell A system message.
  • the uplink and downlink ratio index broadcasted in the system message is 0, and the uplink and downlink subframe ratios corresponding to the index 0 are at Table 1 can be found) and random access configuration index.
  • the UE calculates that the location of the random access resource is located in the subframe 4 (hereinafter abbreviated as sf4) according to the uplink and downlink subframe allocation ratio and the random access resource configuration index received in the system message, and the random access resource appears in the system frame.
  • sf4 the subframe 4
  • the UE receives the RRC reconfiguration message from the e B, and the message carries the uplink and downlink subframe ratios that may appear in the dynamic adjustment: the uplink and downlink ratio index 3 and the uplink and downlink ratio index 4, and feeds back to the eNB. Configuration completion message. At this time, the UE makes a judgment with respect to the calculated random access resource location for index 3 and index 4. In the uplink and downlink configuration index 3, compared with the index 0 broadcasted in the system message, sf6/7/8/9 changes from uplink to downlink. Since the random access resource is in sf4, there is no sf 6/7/8/9.
  • the UE For random access resources, the UE considers that sf 6/7/8/9 is downlink in this uplink and downlink configuration; and when the uplink and downlink configuration index is 4, compared with index 0, sf 4/6/7/8/9 In the downlink, the sf4 subframe in the radio frame with the odd frame number contains the random access resources. Therefore, the UE considers that in this configuration, when the system frame number is even, sf 4/6/7/8 /9 is downlink, and when the system frame number is odd, sf 6/7/8/9 is downlink, and sf4 is uplink.
  • the UE receives the uplink and downlink subframe dynamic adjustment commands from the eNB, and the command indicates that the uplink and downlink subframe ratio is adjusted to index 3.
  • the UE considers sf 6/7/8/9 to be a downlink subframe according to the judgment result in 2.
  • the UE receives the uplink and downlink subframe dynamic adjustment commands from the eNB, and the command indicates that the uplink and downlink subframe ratio is adjusted to index 4. According to the judgment result in 2, the UE considers that sf 4/6/7/8/9 is downlink when the system frame number is even, and sf 6/7/8/9 is downlink when the system frame number is odd.
  • Frame, sf4 is an uplink subframe.
  • the UE may send the PRACH preamble (random access signal) and the uplink physical channel such as the PUSCH VPUCCH in the subframe; if the UE considers that the subframe is the upper and lower subframes, the UE A physical channel such as PDCCH VPDSCH may be received on this subframe.
  • Inter-UE interference greatly limits the difficulty of network planning due to greatly limiting the random physical access channel configuration index, thereby effectively reducing the configuration of random access resources when the subframe ratio adjustment technology is started. Limitation, which simplifies the difficulty of network planning.

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Abstract

La présente invention porte sur un procédé et un appareil de traitement de ressources physiques à accès aléatoire. Le procédé comprend les étapes suivantes : une station de base évalue s'il existe des ressources physiques à accès aléatoire dans des trames secondaires en liaison descendante après ajustement dynamique du rapport d'attribution de trames secondaires en liaison montante-descendante; si le résultat de l'évaluation est oui, la station de base traite les trames secondaires en liaison descendante, dans lesquelles les ressources physiques à accès aléatoire existent en tant que trames secondaires en liaison montante; et/ou, si le résultat de l'évaluation est non, la station de base traite les trames secondaires en liaison descendante dans lesquelles les ressources physiques à accès aléatoire n'existent pas en tant que trames secondaires en liaison descendante. La présente invention résout le problème en l'état de la technique selon lequel, afin d'éviter les interférences entre les nouveaux UE et les anciens UE, les indices de configuration des canaux physiques à accès aléatoire sont fortement limités, ce qui entraîne une forte augmentation de la difficulté de configuration du réseau. Elle permet d'obtenir un effet de diminution efficace de la limite de configuration des ressources à accès aléatoire lors du démarrage de la technologie d'ajustement du rapport d'attribution de trames secondaires, ce qui simplifie davantage la difficulté de configuration du réseau.
PCT/CN2014/083749 2014-01-17 2014-08-05 Procédé et appareil de traitement de ressources physiques à accès aléatoire WO2015106561A1 (fr)

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