WO2018082511A1 - Procédé de prétraitement de paquets de données, appareil, et dispositif - Google Patents

Procédé de prétraitement de paquets de données, appareil, et dispositif Download PDF

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Publication number
WO2018082511A1
WO2018082511A1 PCT/CN2017/108189 CN2017108189W WO2018082511A1 WO 2018082511 A1 WO2018082511 A1 WO 2018082511A1 CN 2017108189 W CN2017108189 W CN 2017108189W WO 2018082511 A1 WO2018082511 A1 WO 2018082511A1
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Prior art keywords
processing
tbs
terminal
base station
scheme
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PCT/CN2017/108189
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English (en)
Chinese (zh)
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韩锋
李宏
晋英豪
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华为技术有限公司
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • H04W72/1268—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of uplink data flows
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • 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

Definitions

  • Embodiments of the present invention relate to the field of communications, and, more particularly, to a pre-processing party, apparatus, and device for a data packet.
  • Future communication systems are required to support higher rate experiences, greater bandwidth access capabilities, lower latency, and highly reliable information interaction.
  • Future communication systems will support a variety of vertical industry applications for automotive networking, emergency communications, and industrial Internet. At the same time, it may need to support transmission rates of up to tens of Gbps, which will impose more severe requirements on real-time processing.
  • the introduction of short subframe lengths in future communication systems places higher demands on processing speed.
  • RLC Radio Link Control
  • MAC Media Access Control
  • the terminal needs to perform packet cascading or splitting at the RLC layer and packet multiplexing at the MAC layer, and add according to the cascading and multiplexing results.
  • the corresponding frame header In the traditional Long Term Evolution (LTE) system, the terminal needs to perform packet cascading or splitting at the RLC layer and packet multiplexing at the MAC layer, and add according to the cascading and multiplexing results.
  • the corresponding frame header the terminal can perform the above operations only after receiving the uplink authorization information sent by the base station. Therefore, the requirements for higher transmission rates and lower latency of future communication systems cannot be met.
  • the embodiments of the present invention provide a method, a device, and a device for preprocessing a data packet, which are used to improve the preprocessing capability of the communication system, and better meet the requirements of the high rate and low delay of the communication system.
  • an embodiment of the present invention provides a preprocessing method for a data packet, including: a terminal receiving a first message from a base station, where the first message carries pre-processing parameter configuration information; and the terminal according to the pre-processing parameter
  • the configuration information is pre-processed by the radio link control RLC layer data packet and/or the medium access control MAC layer data packet to obtain uplink data; the terminal receives the second message from the base station, and the second message carries the uplink authorization information; The terminal sends the uplink data according to the uplink grant information.
  • the pre-processing parameter configuration information includes a transport block size TBS, a pre-processing coefficient, or a multiplicative coefficient.
  • the base station pre-processes the configuration parameters by notifying the terminal, so that the terminal can perform packet pre-processing before the uplink authorization information is received, thereby speeding up the data processing speed, and thus can better meet the QoS requirement rate of the future communication system.
  • the sending the uplink data according to the uplink grant information includes: According to the adjustment, the adjusted uplink data is sent on the resource indicated by the uplink grant information.
  • the TBS is a TBS for the terminal; or the TBS is a TBS for each logical channel of the terminal; or the TBS is a TBS set for each parameter of the terminal.
  • the terminal can compare the pre-processed data packet size with the base station configuration TBS to avoid the system burden caused by excessive pre-processing.
  • the terminal performs pre-processing on the radio link control RLC layer data packet and/or the medium access control MAC layer data packet according to the pre-processing parameter configuration information, and obtaining the uplink data includes: the terminal according to the The pretreatment parameters and the following formula are used to obtain a TBS for pretreatment;
  • M n is a TBS configured by the base station by using the first message
  • a is the pre-processing coefficient
  • F n is a pre-processed TBS
  • F n-1 is determined by the terminal according to the uplink authorization information.
  • the terminal performs pre-processing according to the TBS for performing pre-processing to obtain uplink data.
  • the scheme for pre-processing the radio link control RLC layer data packet and/or the medium access control MAC layer data packet includes a first pre-processing scheme and/or a second pre-processing scheme; wherein the first The pre-processing scheme is used for pre-processing a logical channel for transporting a relatively large service packet or a large data volume service, and the second pre-processing scheme is for pre-processing a logical channel for transmitting a packet service or a low-data service. .
  • the terminal can be more flexibly and efficiently pre-processed.
  • the method further includes: the terminal receiving the first signaling from the base station, where the first signaling is used to indicate that each logical channel of the terminal adopts a first pre-processing scheme or a second a pre-processing scheme; the terminal performs a corresponding pre-processing scheme according to the first signaling.
  • the method further includes: the terminal receiving second signaling from the base station, the second signaling being used to indicate that a pre-processing of the one or more logical channels of the terminal is updated Program.
  • the base station can update the pre-processing scheme adopted by the terminal in real time, and the pre-processing scheme is more targeted and more effective.
  • the method further includes: the terminal receiving updated pre-processing parameter configuration information from the base station; and the terminal performing pre-processing according to the updated pre-processing parameter configuration information. After the terminal's pre-processing parameter configuration information is updated according to the channel and other related conditions, the pre-processing can be performed more effectively.
  • the embodiment of the present invention provides a preprocessing method for a data packet, including: a base station sending a first message to a terminal, where the first message carries pre-processing parameter configuration information; and the pre-processing parameter configuration information
  • the terminal is configured to preprocess the radio link control RLC layer data packet and/or the medium access control MAC layer data packet; the base station sends a second message to the terminal, where the second message carries uplink authorization information;
  • the base station receives the uplink data that is sent by the terminal according to the uplink grant information.
  • the pre-processing parameter configuration information includes a transport block size TBS, a pre-processing coefficient, or a multiplicative coefficient.
  • the base station pre-processes the configuration parameters by notifying the terminal, so that the terminal can perform packet pre-processing before the uplink authorization information is received, thereby speeding up the data processing speed, and thus can better meet the QoS requirement rate of the future communication system.
  • pre-processing parameter configuration information such as: pre-processing parameter configuration information, first message, second message, pre-processing, etc., especially transport block size TBS, pre-processing coefficient or multiplicative coefficient, etc., and first Some of the technical features involved are similar or corresponding, and will not be repeatedly described herein.
  • an embodiment of the present invention provides a preprocessing apparatus for a data packet, including: a receiving module, configured to receive a first message from a base station, where the first message carries pre-configuration parameter configuration information; And pre-processing the radio link control RLC layer data packet and/or the medium access control MAC layer data packet according to the pre-processing parameter configuration information to obtain uplink data; the receiving module is further configured to receive the second message from the base station, The second message carries the uplink authorization information, and the sending module is configured to send the uplink data according to the uplink authorization information.
  • the pre-processing parameter configuration information includes a transport block size TBS, a pre-processing coefficient, or a multiplicative coefficient.
  • pre-processing parameter configuration information such as: pre-processing parameter configuration information, first message, second message, pre-processing, etc., especially transport block size TBS, pre-processing coefficient or multiplicative coefficient, etc.
  • transport block size TBS transport block size
  • pre-processing coefficient or multiplicative coefficient etc.
  • an embodiment of the present invention provides a preprocessing apparatus for a data packet, including: a sending module, configured to send a first message to a terminal, where the first message carries pre-processing parameter configuration information;
  • the processing parameter configuration information is used by the terminal to preprocess the radio link control RLC layer data packet and/or the medium access control MAC layer data packet;
  • the sending module is further configured to send a second message to the terminal, where The second message carries the uplink authorization information
  • the receiving module is configured to receive the uplink data that is sent by the terminal according to the uplink authorization information.
  • the pre-processing parameter configuration information includes a transport block size TBS, a pre-processing coefficient, or a multiplicative coefficient.
  • pre-processing parameter configuration information such as: pre-processing parameter configuration information, first message, second message, pre-processing, etc., especially transport block size TBS, pre-processing coefficient or multiplicative coefficient, etc.
  • transport block size TBS transport block size
  • pre-processing coefficient or multiplicative coefficient etc.
  • an embodiment of the present invention provides a data packet preprocessing apparatus.
  • the apparatus can be used to perform the method of the first aspect or the second aspect.
  • the device includes a processor, a memory, a receiver, a transmitter, and a bus, wherein the processor, the memory, the receiver, and the transmitter perform data transmission through the bus connection, and the memory is configured to store the processor The data.
  • the device of the third aspect may be a terminal.
  • the device of the fourth aspect may be a base station.
  • an embodiment of the present invention provides a communication system, where the system includes the apparatus of the third aspect and the apparatus of the fourth aspect.
  • an embodiment of the present invention provides a computer storage medium for storing computer software instructions used by the terminal or the base station, which includes a program designed to perform the above aspects.
  • the base station notifies the terminal to pre-configure the configuration parameters, so that the terminal can perform packet pre-processing before receiving the uplink authorization information, thereby speeding up the data processing speed, and thus can better meet the future communication system.
  • Ten Gbps rate requirements The base station side actively configures the pre-processing parameters for the terminal, which can further improve the success rate of the pre-processing, so that the pre-processing of the terminal is more effective. Thereby, the system burden caused by unsuccessful pre-processing can be avoided.
  • FIG. 1 is a schematic diagram of a pretreatment according to the first scheme
  • FIG. 2 is a schematic diagram of a pretreatment provided by the second scheme
  • FIG. 3 is a flowchart of a data packet pre-processing method according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of a TBS-based LCP processing manner according to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of MAC layer signaling according to an embodiment of the present invention.
  • FIG. 6 is another data packet preprocessing method according to an embodiment of the present invention.
  • FIG. 7 is a schematic diagram of a data packet pre-processing apparatus according to an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of another data packet preprocessing apparatus according to an embodiment of the present invention.
  • FIG. 9 is a schematic diagram of a data packet preprocessing apparatus according to an embodiment of the present invention.
  • FIG. 10 provides another data packet preprocessing apparatus according to an embodiment of the present invention.
  • the terminal referred to in the embodiment of the present invention may also be referred to as a user equipment (English: User Equipment; abbreviated as: UE), a mobile station (English: Mobile Station; abbreviated as: MS). It should be noted that the embodiments of the present invention can be applied to both LTE systems (such as base stations and terminals) and future communication systems, such as to higher-level next-generation wireless communication systems (for example, 5G RAT fifth-generation radios).
  • a network access node eg, 5G_NodeB
  • a user equipment eg, 5G_terminal
  • the pretreatment scheme mainly includes the following two schemes.
  • Solution 1 The cascading function at the RLC level is removed or the cascading function of the RLC layer is performed together with the multiplexing function of the MAC layer at the MAC layer.
  • the RLC layer pre-processing adding the RLC sequence number (English: Sequence Number; SN for short) to the RLC layer service data unit (English: Service Data Unit; SDU), directly to the MAC layer;
  • the MAC layer preprocessing Cascading MAC layer SDUs and adding MAC subheaders to obtain MAC frames.
  • the MAC subheader may include adding a logical channel identifier (ID) or a length field (L field).
  • FIG. 1 is a schematic diagram of a pretreatment provided in the first scheme. As shown in FIG. 1, there are only two logical channels (ie, logical channel 1 and logical channel 2 in FIG. 1).
  • the SDU of the RLC layer is a Packet Data Convergence Protocol (PDCP) layer PDU.
  • PDCP Packet Data Convergence Protocol
  • the RLC layer PDU is obtained after the RLC layer adds the sequence number to the SDU.
  • These PDUs are not cascaded at the RLC layer but directly to the MAC layer as a MAC layer SDU.
  • the MAC subheader is then concatenated at the MAC layer and a MAC frame is obtained.
  • the scheme cannot pre-process the RLC layer service data unit (English: Service Data Unit; SDU). Because the RLC layer SDU split depends on the MAC layer logical channel priority (English: Logic Channel Prioritization; abbreviation: LCP) scheduling result.
  • LCP scheduling result can support the transmission of one or more complete RLC layer SDUs, the RLC layer SDU segmentation is not required; otherwise, the RLC layer SDU segmentation is required.
  • the MAC layer LCP scheduling result needs to be determined after receiving the uplink authorization information. Therefore, the RLC layer SDU segmentation cannot be performed.
  • Option 2 Retain the cascading function of the RLC layer.
  • RLC layer preprocessing A length indication (English: Length Indicating; LI: LI) field is added to each RLC layer SDU. That is to say, the LI domain in the RLC subheader in the legacy LTE is dispersed before each RLC layer SDU. Then, the RLC layer SN is added to obtain an RLC layer PDU. The RLC layer PDU is directly sent to the MAC layer.
  • LI Length Indicating
  • the MAC layer preprocessing Add a MAC subheader to the MAC layer SDU to obtain a MAC layer PDU.
  • the MAC subheader may include adding a logical channel identifier (ID) or a length field (L field).
  • FIG. 2 is a schematic diagram of a pretreatment provided by the second scheme.
  • there are only two logical channels ie, logical channel 1 and logical channel 2 in FIG. 2).
  • the length indicator field ie, L1, L2, and the like in FIG. 2
  • the cascading is performed for each logical channel and the sequence number is added to obtain the RLC layer PDU.
  • These PDUs are sent directly to the MAC layer as a MAC layer SDU.
  • the RLC layer cannot perform possible segmentation operations before receiving the MAC layer LCP scheduling result or before receiving the uplink grant information, which greatly affects the performance of the preprocessing.
  • the SN of the preprocessed RLC layer PDU behind the data packet is affected, so that the SN is The preprocessing of the packet behind the packet is invalid.
  • SINR signal-to-noise ratio
  • the terminal After receiving the MAC layer LCP scheduling result, the terminal often needs to perform packet splitting, so that the previous preprocessing is invalid. However, the preprocessing is invalid, which wastes the hardware and software resources on the one hand, and greatly increases the processing complexity of the terminal side on the other hand.
  • the embodiment of the invention provides a data packet preprocessing method.
  • the base station configures a pre-processed data packet size for the terminal, and the terminal performs pre-processing on the subsequent subframe according to the pre-processed data packet size.
  • FIG. 3 is a flowchart of a data packet pre-processing method according to an embodiment of the present invention. As shown in FIG. 3, the method includes:
  • Step 301 The terminal receives a first message from the base station, where the first message carries pre-processing parameter configuration information.
  • Step 302 The terminal pre-arranges the RLC layer and/or the MAC layer data packet according to the pre-processing parameter configuration information.
  • Step 303 The terminal receives the second message from the base station, where the second message carries the uplink authorization information.
  • Step 304 The terminal adjusts the preprocessed data packet according to the uplink authorization information to obtain uplink data.
  • Step 305 The terminal sends the uplink data.
  • the uplink data bearer is sent on an uplink transmission resource indicated by the uplink grant information.
  • the base station determines the pre-processing parameter configuration information according to the status of the Buffer Status Report (BSR), the channel status, or the load of the entire cell reported by the terminal.
  • the pre-processing parameter configuration information includes a packet size that allows pre-processing. For example, when the BSR reported by the terminal indicates that the buffer data to be transmitted by the terminal is large and the current channel condition is good, the base station configures a larger packet size for the terminal to be preprocessed; when the channel condition reported by the terminal is generally or very When the difference is poor, the base station configures the terminal with a smaller packet size that allows preprocessing.
  • the preprocessing method may refer to the two preprocessing schemes provided above or the current LTE scheme. For example: constructing RLC layer PDUs, adding RLC layer frame headers, constructing MAC layer PDUs, and/or adding MAC layer frame headers, and the like.
  • the uplink grant information includes resources that can be used for uplink transmission. If the resources for uplink transmission are larger than the resources required for the preprocessed data packets, redundancy or data is added to the preprocessed data packets to obtain uplink data. If the resource used for uplink transmission is smaller than the resource required for the preprocessed data packet, the preprocessed data packet is deleted to obtain uplink data. If the resource used for the uplink transmission is equal to the resource required for the preprocessed data packet, the preprocessed data packet is used as the uplink data (in this scenario, the step 304 may be omitted). Therefore, the adjustment of the preprocessed data packet in step 304 includes adding data or redundancy, deleting data, or even directly using the preprocessed data packet as uplink data to be transmitted.
  • the packet size allowed for preprocessing can be characterized by a transport block size (Transmission Block Size; TBS for short).
  • TBS Transport Block Size
  • the TBS often corresponds to the MAC layer PDU size transmitted by the terminal.
  • the base station can notify the terminal of its available TBS by the following two possible implementation manners.
  • the base station By transmitting the first message, the base station notifies the terminal of the index corresponding to the TBS used by the terminal.
  • Table 1 is only one example of the mapping relationship, and other similar mapping relationships should also be included in the scope of the present invention.
  • the user will preprocess as much as possible based on the upper limit of the TBS without performing the last packet split. Packet.
  • the base station specifies the transport block size that the terminal is scheduled in a certain subframe as the packet size that allows preprocessing.
  • the transport block size is calculated by the terminal based on a modulation and coding strategy (English: Modulation and Coding Scheme; MCS) and an allocated physical layer time-frequency transport block size in the uplink grant information corresponding to the subframe.
  • MCS Modulation and Coding Scheme
  • the base station may indicate, in the uplink grant information, the subframe (or the subframe in which the 1-bit is transmitted) by using 1 bit (English: bit) as the reference subframe. Then the transport block size of the reference subframe is scheduled as the packet size that allows preprocessing. Alternatively, the base station indicates that the first (or one of) scheduled subframes in the on time of the discontinuous transmission (English: on time) is the reference subframe.
  • a multiplicative coefficient may be configured for the terminal. The terminal determines the transport block size based on the reference subframe and the multiplicative coefficient.
  • the reference block corresponds to a transport block size of 1000 bytes
  • the base station configuration has a multiplicative coefficient of 0.8
  • the transport block size is 800 bytes. Then the terminal allows the pre-processed packet size to be 800 bytes.
  • the terminal After receiving the TBS, the terminal performs preprocessing of the RLC layer and the MAC layer based on the TBS.
  • FIG. 4 is a schematic diagram of a TBS-based LCP processing manner according to an embodiment of the present invention. As shown in FIG. 4, it is assumed that there are three logical channels, wherein the priority of logical channel 1 is priority 1 (the highest priority), the priority of logical channel 2 is priority 2, and the priority of logical channel 3 is priority 3. (The lowest priority).
  • a priority bit rate (English: Prioritized Bit Rate; PBR) and a funnel size duration (English: Bucket Size Duration; BSD) are assigned to each logical channel. Every logical channel has some data to transmit.
  • PBR Prioritized Bit Rate
  • BSD Bucket Size Duration
  • the RLC layer and the MAC layer are preprocessed for the data to be transmitted according to the priority of the logical channel, the allocated PBR, and the size of the data to be transmitted on the logical channel.
  • logical channel 1 has the highest priority, and the data to be transmitted on logical channel 1 should be preprocessed first.
  • the amount of data to be transmitted on the logical channel 1 is greater than the amount of data that can be carried by the allocated PBR, so the data that can be carried by the allocated PBR is pre-processed first.
  • other logical channels are processed in turn according to the priority of the logical channel.
  • the data to be transmitted on the logical channel 1 may be carried on the remaining resources. It is processed in such a way that there are no available resources (such as MAC layer PDUs) or data to be transmitted.
  • the size of the data packet to be pre-processed should be less than or equal to the packet size that the TBS allocated by the base station can carry.
  • the resources available in Figure 4 should be less than or equal to the packet size that the base station allocated TBS can carry.
  • the terminal may further optimize locally to obtain a TBS that implements pre-processing. For example, the terminal obtains a pre-processed TBS based on the following filtering formula:
  • TBS M n to the base station configuration, statistics F n-1 is the terminal after the actual TBS pretreated (pretreated as previously terminal actual TBS of the average), the base station A is configured coefficients.
  • the size of the data packet to be preprocessed may be larger than the data packet size that the TBS allocated by the base station can carry.
  • the size of the data packet to be preprocessed should be less than or equal to the packet size that the TBS calculated by the terminal can carry.
  • the above method configures one TBS for all logical channels. Further, one TBS can be associated for each logical channel. Therefore, in this scenario, the base station can still use the above two possible implementation manners to notify the TBS available to the terminal.
  • the table corresponding to Table 1 can be used to notify the index corresponding to the terminal TBS. As shown in table 2:
  • Table 2 the logical channel in Table 2 can be indicated by the ID of the logical channel.
  • Table 2 is only an example, and corresponding or similar features can be referred to Table 1, and details are not described herein again.
  • the base station also notifies the terminal TBS by specifying a reference subframe to the terminal.
  • a multiplicative coefficient may also be configured for each logical channel of the terminal.
  • the terminal determines the transport block size of each logical channel based on the reference subframe and the multiplicative coefficient.
  • the specific implementation may take the form of an index table as shown in Table 3.
  • Multiplicative coefficient of logical channel 1 Multiplicative coefficient of logical channel 2
  • Multiplicative coefficient of logical channel 3 0 0.9 0.8 0.7 1 1 0.8 0.6 2 1.2 1 0.8 3 1.4 1.2 1 ... ... ... ...
  • Table 3 is only an example, the number of logical channels may be more or less, and the value of the multiplicative coefficient of each logical channel may also be changed according to actual application conditions.
  • the terminal after receiving the TBS corresponding to each logical channel, the terminal performs pre-processing of the RLC layer and the MAC layer based on the TBS corresponding to each logical channel.
  • the terminal performs pre-processing of the RLC layer and the MAC layer based on the TBS corresponding to each logical channel.
  • LCP processing or formula calculations are required for each logical channel.
  • one RLC layer PDU size may be corresponding to each logical channel (equivalent to characterizing the pre-processing configuration parameters above by the RLC layer PDU size instead of TBS) Characterization). Then, based on a similar implementation manner, the base station may use the foregoing two possible implementation manners to notify the terminal that each logical channel corresponds to one RLC layer PDU size. The terminal receives the RLC layer PDU size corresponding to each logical channel, and may also perform processing in a similar manner to the method described above.
  • one logical channel may correspond to different parameter settings, or one logical channel corresponds to a different numerology.
  • a logical channel can also correspond to a parameter setting (or a kind of numerology). Therefore, the base station can further configure one TBS for each of the logical channels corresponding to different numerologies.
  • the priority order of the two or more numerologies may also be specified.
  • the logical channel 3 corresponds to two numerologies (such as numerology1 and numerology2), and the base station can notify the terminal of the available TBS for different numerologies. As shown in Table 4:
  • Table 4 also specifies different priorities for different numerologies. Optionally, these priorities may also be prioritized with the priorities of other logical channels to determine the order of processing. It should be understood that Table 4 is only an example, and in actual application, a table similar to Table 4 can be designed for more logical channels or for more or less numerology.
  • the pre-processing parameter configuration information includes the packet size that allows pre-processing.
  • the pre-processing parameter configuration information may also include pre-processing coefficients (excluding the packet size that allows pre-processing).
  • a pre-processing coefficient may be uniformly used for all logical channels, or each logical channel may correspond to one pre-processing coefficient, and even a different numerology under each logical channel may respectively correspond to one pre-processing coefficient.
  • the base station sends the pre-processing coefficient to the terminal by using the first message, and after receiving the first message, the terminal may obtain the pre-processed TBS based on the following filtering formula, that is, F n :
  • TBS F n-1 M n configured by the base station TBS
  • a statistical results of TBS F n-1 may be determined according to the previous uplink grant information terminal. After the terminal obtains the pre-processed TBS according to the formula, the terminal may perform subsequent processing according to the method described above, and details are not described herein again.
  • the pre-processing parameter configuration information includes a packet size or pre-processing coefficient that allows for pre-processing.
  • the pre-processing parameter configuration information may also include a multiplicative coefficient (excluding a packet size or pre-processing coefficient that allows for pre-processing).
  • the specific implementation may take the form of an index table as shown in Table 3.
  • the base station sends the multiplicative coefficient to the terminal by using the first message. After receiving the first message, the terminal has the following two possible implementation manners. In one kind In an implementation manner, the terminal multiplies the multiplicative coefficient corresponding to each logical channel by (PBR ⁇ TTI corresponding to each logical channel), and obtains the TBS corresponding to each logical channel respectively.
  • the terminal multiplies the multiplicative coefficient corresponding to each logical channel by (PBR ⁇ BSD corresponding to each logical channel) to obtain a TBS corresponding to each logical channel. It is worth noting that in the latter mode, the multiplicative coefficient corresponding to each logical channel is less than one.
  • the terminal After the terminal obtains the pre-processed TBS, it can perform subsequent processing according to the method described above, and details are not described herein again.
  • the base station may transmit the updated TBS or pre-processing coefficients according to actual conditions or periodically.
  • the terminal can update the TBS or the pre-processing coefficient according to the actual situation or periodically. For example, after receiving the updated TBS or the pre-processing coefficients or calculating the updated TBS, the terminal performs pre-processing of the RLC layer and the MAC layer based on the updated TBS.
  • the pre-processing parameter configuration information may also be directly specified by the standard.
  • the TBS available to the terminal is directly specified in the standard.
  • the terminal performs preprocessing according to the specified TBS.
  • the pre-processing parameter configuration information is instead specified by the standard.
  • the embodiment of the present invention provides two possible implementation manners.
  • the first message may be physical layer control signaling. Therefore, the pre-processing configuration parameters can be dynamically indicated by physical layer control signaling. For example, the packet size allowed to be preprocessed may be indicated in a Downlink Control Information (DCI) format.
  • DCI Downlink Control Information
  • the first message may be MAC layer signaling. Therefore, the pre-configuration configuration parameters can be indicated by MAC layer signaling.
  • the base station uses one of the reserved logical channel identifier values (English: Logic Channel ID value; LCID value) to indicate that a certain control element is used to carry the pre-processing parameter configuration information, and the LCID value corresponds to an index. For example, as shown in Table 5, where the index value can use other values.
  • FIG. 5 is a schematic diagram of MAC layer signaling according to an embodiment of the present invention.
  • the MAC layer signaling includes a frame header, a control element, an SDU, and the like. In some cases it may also include redundancy (such as padding).
  • the frame header includes a field for carrying an index of the LCID value.
  • One of the control elements is used to carry the pre-configuration parameter configuration information.
  • R represents reserved bits;
  • E represents extended bits.
  • the base station notifies the terminal to pre-configure the configuration parameters, so that the terminal can perform packet pre-processing before receiving the uplink authorization information, thereby speeding up the data processing speed, and thus can better meet the future communication system.
  • Ten Gbps rate requirements The base station side actively configures the pre-processing parameters for the terminal, which can be further improved.
  • the success rate of the pre-processing makes the pre-processing of the terminal more efficient. Thereby, the system burden caused by unsuccessful pre-processing can be avoided.
  • the two schemes for pre-processing the data packets in real time at the RLC layer and the MAC layer can be further improved as described above.
  • the first scheme when the RLC layer is not cascaded, it is necessary to add an SN to form an RLC layer PDU for each RLC layer SDU, and add an L domain to the PDU transmitted by the MAC layer for each RLC layer, resulting in overhead (English: overhead) )increase.
  • overhead English: overhead
  • the increase in overhead will greatly affect system performance. Therefore, if the data packet is relatively large in business or large data volume, the preprocessing of the scheme one process will get better results.
  • the RLC layer retains the cascading function, and the overhead is less than the solution one. Therefore, Option 2 is more suitable for small package business or low data volume business.
  • FIG. 6 is another data packet preprocessing method according to an embodiment of the present invention.
  • the base station can select or switch between the first scheme and the second scheme of the foregoing pre-processing scheme by signaling.
  • the method includes:
  • Step 601 The base station sends the first signaling to the terminal, where the first signaling is used to indicate a pre-processing scheme adopted by each logical channel.
  • Step 602 The terminal performs a pre-processing scheme corresponding to each logical channel according to the received first signaling.
  • the pre-processing scheme includes a first scheme and a second scheme.
  • the first signaling indicates that the logical channel for transmitting a relatively large service packet or a large data volume service adopts the first scheme.
  • the first signaling may also indicate that the logical channel for transmitting the packet service or the low data volume service adopts the second scheme.
  • the first solution may be the first solution of the foregoing pre-processing solution
  • the second solution may be the second solution of the foregoing pre-processing solution or the pre-processing solution of the traditional LTE.
  • the method may further include:
  • Step 603 The base station sends a second signaling to the terminal, where the second signaling is used to indicate that the pre-processing scheme adopted by the one or more logical channels is updated.
  • the transmission conditions of these logical channels may change in real time, so the base station needs to dynamically update the preprocessing scheme of these logical channels.
  • the base station may dynamically indicate (or dynamically update) the pre- or some logical logic by using the second signaling according to the service packet transmission status (such as the service quality parameter of the service packet, the packet size of the service packet, etc.) transmitted on the logical channel. Processing plan.
  • the first scheme may be adopted when a certain logical channel transmits a relatively large service or a large data volume service, or the small packet service or the low data may be transmitted when a certain logical channel is transmitted.
  • the second option is adopted for volume business.
  • the base station may determine a pre-processing scheme for each logical channel, so that the pre-processing success rate of the terminal is higher.
  • the method of dynamic update preprocessing scheme is introduced, which achieves a good compromise between overhead and preprocessing capability, improves the spectrum efficiency of the system, and further improves the preprocessing capability of the terminal.
  • the embodiment of the present invention provides a data packet pre-processing apparatus 700.
  • the apparatus 700 can be used to perform the method illustrated in FIG. As shown in FIG. 7, the apparatus 700 includes:
  • the receiving module 701 is configured to receive, by the base station, a first message, where the first message carries pre-processing parameter configuration information;
  • the pre-processing module 702 is configured to control the RLC layer data packet on the radio link according to the pre-processing parameter configuration information. And/or medium access control MAC layer data packet is preprocessed to obtain uplink data;
  • the receiving module 701 is further configured to receive a second message from the base station, where the second message carries uplink authorization information;
  • the sending module 703 is configured to send the uplink data according to the uplink grant information.
  • the pre-processing parameter configuration information includes a transport block size TBS, a pre-processing coefficient, or a multiplicative coefficient.
  • pre-processing parameter configuration information such as: pre-processing parameter configuration information, first message, second message, pre-processing, etc., especially a transport block size TBS, a pre-processing coefficient or a multiplicative coefficient, etc., and the foregoing
  • TBS transport block size
  • pre-processing coefficient or a multiplicative coefficient etc.
  • the embodiment of the present invention provides another data packet pre-processing apparatus 800.
  • the apparatus 800 can be used to perform the method illustrated in FIG. As shown in FIG. 8, the apparatus 800 includes:
  • the receiving module 801 is configured to receive, by the base station, the first signaling, where the first signaling is used to indicate a pre-processing scheme adopted by each logical channel;
  • the processing module 802 is configured to perform a pre-processing scheme corresponding to each logical channel according to the received first signaling.
  • the pre-processing scheme includes a first scheme and a second scheme.
  • the first signaling indicates that the logical channel for transmitting a relatively large service packet or a large data volume service adopts the first scheme.
  • the first signaling may also indicate that the logical channel for transmitting the packet service or the low data volume service adopts the second scheme.
  • the first solution may be the first solution of the foregoing pre-processing solution
  • the second solution may be the second solution of the foregoing pre-processing solution or the pre-processing solution of the traditional LTE.
  • the receiving module 801 is further configured to receive, by the base station, second signaling, where the second signaling is used to indicate that the pre-processing scheme adopted by the one or more logical channels is updated.
  • the embodiment of the present invention provides a data packet pre-processing device 900.
  • the device 900 can be used to perform the method illustrated in FIG.
  • the device 900 includes a processor 901, a memory 902, a receiver 904, a transmitter 905, and a bus 903, wherein the processor 901, the memory 902, the receiver 904, and the transmitter 905 are connected by the bus 903 for data transmission.
  • the memory 902 is configured to store data processed by the processor 901;
  • the receiver 904 is configured to receive a first message from the base station, where the first message carries pre-processing parameter configuration information.
  • the processor 901 is configured to perform pre-processing on the radio link control RLC layer data packet and/or the medium access control MAC layer data packet according to the pre-processing parameter configuration information to obtain uplink data.
  • the receiver 904 is further configured to receive, by the base station, a second message, where the second message carries uplink authorization information;
  • the transmitter 905 is configured to send the uplink data according to the uplink grant information.
  • the pre-processing parameter configuration information includes a transport block size TBS, a pre-processing coefficient, or a multiplicative coefficient.
  • pre-processing parameter configuration information such as: pre-processing parameter configuration information, first message, The second message, the pre-processing, and the like, in particular, the transport block size TBS, the pre-processing coefficient or the multiplicative coefficient, etc.
  • TBS transport block size
  • pre-processing coefficient or the multiplicative coefficient etc.
  • FIG. 10 another embodiment of the present invention provides a packet pre-processing device 1000.
  • the device 1000 can be used to perform the method illustrated in FIG.
  • the device 1000 includes a processor 1001, a memory 1002, a receiver 1004, and a bus 1003, wherein the processor 1001, the memory 1002, and the receiver 1004 are connected by the bus 1003 for data transmission, and the memory 1002 is used for storing Data processed by the processor 1001;
  • the receiver 1004 is configured to receive, by the base station, the first signaling, where the first signaling is used to indicate a pre-processing scheme adopted by each logical channel;
  • the processor 1001 is configured to perform a pre-processing scheme corresponding to each logical channel according to the received first signaling.
  • the pre-processing scheme includes a first scheme and a second scheme.
  • the first signaling indicates that the logical channel for transmitting a relatively large service packet or a large data volume service adopts the first scheme.
  • the first signaling may also indicate that the logical channel for transmitting the packet service or the low data volume service adopts the second scheme.
  • the first solution may be the first solution of the foregoing pre-processing solution
  • the second solution may be the second solution of the foregoing pre-processing solution or the pre-processing solution of the traditional LTE.
  • the processor 1001 is further configured to receive, by the base station, second signaling, where the second signaling is used to indicate that the pre-processing scheme adopted by the one or more logical channels is updated.

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

Abstract

Les modes de réalisation de la présente invention concernent un procédé de prétraitement de paquets de données, comprenant les étapes suivantes : un terminal reçoit un premier message, d'une station de base, le premier message transportant des informations de configuration de paramètres de prétraitement ; d'après les informations de configuration de paramètres de prétraitement, le terminal prétraite un paquet de données de couche RLC (commande de liaison radioélectrique) et/ou un paquet de données de couche MAC (commande d'accès au support), pour obtenir des données de liaison montante ; le terminal reçoit un second message, de la station de base, le second message transportant des informations d'autorisation de liaison montante ; le terminal envoie les données de liaison montante d'après les informations d'autorisation de liaison montante. Les informations de configuration de paramètres de prétraitement comprennent une taille de bloc de transmission (TBS), un coefficient de prétraitement, ou un coefficient multiplicateur.
PCT/CN2017/108189 2016-11-04 2017-10-28 Procédé de prétraitement de paquets de données, appareil, et dispositif WO2018082511A1 (fr)

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CN110621075B (zh) * 2018-06-20 2022-08-09 华为技术有限公司 一种传输数据的方法和装置
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EP2445207A2 (fr) * 2009-06-17 2012-04-25 Samsung Electronics Co., Ltd. Procédé et appareil de transmission de données de diffusion multimédias dans un système de communication sans fil
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