CN111328138B - Method, device and terminal for organizing MAC PDU - Google Patents
Method, device and terminal for organizing MAC PDU Download PDFInfo
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- CN111328138B CN111328138B CN201811528245.6A CN201811528245A CN111328138B CN 111328138 B CN111328138 B CN 111328138B CN 201811528245 A CN201811528245 A CN 201811528245A CN 111328138 B CN111328138 B CN 111328138B
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Abstract
The invention provides an organization method, a device and a terminal of MAC PDU, wherein the method comprises the following steps: receiving a plurality of sets of pre-configured resources configured by network side equipment, and determining a mapping relation between a logical channel and the pre-configured resources according to the service characteristics of the logical channel of the terminal; organizing MAC PDU according to the mapping relation and the logical channel limit corresponding to the logical channel; aiming at a plurality of sets of pre-configured resources, the embodiment of the invention only needs to modify the MAC PDU organization process, and does not need to modify the network side signaling.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method, an apparatus, and a terminal for organizing MAC PDUs.
Background
The 5G NR (New Raido, new air interface) system mainly supports three types of services:
eMBB (enhanced Mobile Broadband, enhanced Broadband communications);
mtc (massive Machine Type Communications);
URLLC (Ultra-Reliable and Low Latency Communications).
The NR system physical layer supports multiple Numerology (baseband parameter)/TTI (transmission time interval).
Numerology is the baseband parameters. The main difference between different numerologies is that the subcarrier spacing supported by different numerologies is different. For example, the subcarrier spacing supported by the 5G NR system includes at least: 15khz,60khz, the Numerology corresponding to the two different subcarrier spacings is two independent numerologies. Generally, numerology used by high-speed terminals is different from Numerology used by low-speed terminals; the Numerology used by the high frequency terminal and the low frequency terminal is also different. The use of different numerologies in addition to being speed and frequency dependent, the industry has an understanding that numerologies that can be used for different services may also be different, such as Numerology used by URLLC and eMBB.
TTI is the Transmission Time interval (Transmission Time interval). In a conventional LTE (long term evolution) system, the TTI length is 1ms. Starting from LTE R14, different TTI lengths, such as 1 OFDM (Orthogonal Frequency Division Multiplexing) symbol length, are introduced in order to support latency reduction. Different TTI lengths are used in 5G systems and can be applied per Numerology, i.e. different numerologies in 5G NR can use different TTI lengths, or the same TTI length, and the TTI length used for different terminals at a Numerology at any one time can be dynamically varied. The TTI length is selected mainly in relation to the service delay, for example, for URLLC service, because the delay requirement supported by it is relatively high, it is possible to select a TTI length with a shorter length, for example, a TTI length of 1 OFDM symbol.
For the NR system, numerology and/or TTI corresponding to one bearer/logical channel is configured by the network, for example, the network may configure Numerology and/or TTI corresponding to the bearer/logical channel through RRC (Radio Resource Control) signaling when the bearer/logical channel is established. The TTI length is selected mainly in relation to the service delay, for example, for URLLC service, because the delay requirement supported by it is relatively high, it is possible to select a TTI length with a shorter length, for example, a TTI length of 1 OFDM symbol.
For IIOT (Industrial Internet of Things) service, it is likely that multiple sets of preconfigured resources are supported on one BWP (bandwidth part), and how to determine the mapping relationship between the logical channel and the preconfigured scheduling resources needs to be considered; there is no relevant solution in the currently published material.
Disclosure of Invention
The invention aims to provide a method, a device and a terminal for organizing MAC PDU (media access control protocol data unit) so as to solve the mapping problem between a plurality of sets of pre-configured scheduling resources and a logical channel.
In order to solve the above problem, an embodiment of the present invention provides an organization method for a media access control data unit MAC PDU, which is applied to a terminal, and includes:
receiving a plurality of sets of pre-configured resources configured by network side equipment, and determining a mapping relation between a logical channel and the pre-configured resources according to the service characteristics of the logical channel of the terminal;
and organizing the MAC PDU according to the mapping relation and the logical channel limit corresponding to the logical channel.
Wherein the pre-configured resources include: pre-configured resources of a first Type1 and/or pre-configured resources of a second Type 2.
Wherein the logical channel comprises: logical channels of the Uu interface and/or logical channels of the direct communication interface.
Wherein, when the logical channel is a logical channel of a Uu interface, the preconfigured resource is: pre-configured resources of a Uu interface; and/or the presence of a gas in the gas,
in the case that the logical channel is a logical channel of a direct communication interface, the preconfigured resource is: pre-configured resources of the direct communication interface.
Wherein, the restricting and organizing the MAC PDU according to the mapping relationship and the logical channel corresponding to the logical channel includes:
aiming at scheduling permission that the scheduled resource is a pre-configured resource, selecting a target logical channel set which can use the scheduling permission according to the mapping relation and the logical channel limit corresponding to the logical channel; the target set of logical channels comprises at least one logical channel;
and allocating resources to the logical channels contained in the target logical channel set, and organizing the MAC PDU.
Wherein, for a scheduling grant of which the scheduled resource is a pre-configured resource, selecting a target logical channel set that can use the scheduling grant according to the mapping relationship and a logical channel restriction corresponding to the logical channel, includes:
for each scheduling grant, selecting a first set of logical channels that satisfy logical channel restrictions corresponding to the logical channels;
selecting a second logical channel set allowing to use the pre-configured resource according to the mapping relation aiming at the scheduling permission that the scheduled resource is the pre-configured resource;
selecting an intersection of the first set of logical channels and the second set of logical channels as a target set of logical channels that may use the scheduling grant.
Wherein, when the logical channel is a logical channel of a Uu interface, the target logical channel set includes at least one logical channel of the Uu interface, and the resource allocation for the logical channel included in the target logical channel set includes:
selecting a logical channel with an available token Bj larger than 0 in the token bucket from the target logical channel set, and sorting the selected logical channels according to a priority descending order;
sequentially allocating resources meeting PBR requirements for the logic channels of the sequenced Uu interfaces according to the prioritized bit rate PBR;
updating the Bj corresponding to each logic channel according to the resource distributed by each logic channel;
if the resources are left after the resources are allocated according to the PBR, allocating the resources to the remaining data of each logic channel again according to the descending order of the priority of the logic channels until the resources are exhausted or no data needs to be allocated.
Wherein, when the logical channel is a logical channel of a direct communication interface, the target logical channel set includes at least one logical channel of the direct communication interface, and the resource allocation for the logical channel included in the target logical channel set includes:
further screening the target logic channel set, selecting a target logic channel of a direct communication interface with the highest priority, and selecting a logic channel subset which is the same as a communication target corresponding to the target logic channel in the target logic channel set; the logical channel subset comprises logical channels of at least one direct communication interface;
sorting the logical channels in the logical channel subset according to a descending order of priority;
and sequentially allocating resources for the logical channels of the sequenced direct communication interfaces until the resources are exhausted or until all the logical channels in the logical channel subset are allocated with the resources.
An embodiment of the present invention further provides a terminal, including: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor; the transceiver is used for receiving a plurality of sets of pre-configured resources configured by network side equipment and determining a mapping relation between a logical channel and the pre-configured resources according to the service characteristics of the logical channel of the terminal;
the processor is used for reading the program in the memory and executing the following processes: and organizing the MAC PDU according to the mapping relation and the logical channel limit corresponding to the logical channel.
Wherein the pre-configured resources include: pre-configured resources of a first Type1 and/or pre-configured resources of a second Type 2.
Wherein the logical channel comprises: logical channels of the Uu interface and/or logical channels of the direct communication interface.
Wherein, in case that the logical channel is a logical channel of a Uu interface, the preconfigured resource is: pre-configured resources of a Uu interface; and/or the presence of a gas in the gas,
in the case that the logical channel is a logical channel of a direct communication interface, the preconfigured resource is: pre-configured resources of the direct communication interface.
Wherein the processor is further configured to:
aiming at scheduling permission of which the scheduled resource is a pre-configured resource, selecting a target logical channel set which can use the scheduling permission according to the mapping relation and the logical channel limit corresponding to the logical channel; the target set of logical channels comprises at least one logical channel;
and allocating resources to the logical channels contained in the target logical channel set, and organizing the MAC PDU.
Wherein the processor is further configured to:
selecting, for each scheduling grant, a first set of logical channels that satisfies a logical channel constraint corresponding to the logical channel;
selecting a second logical channel set allowing to use the pre-configured resource according to the mapping relation aiming at the scheduling permission that the scheduled resource is the pre-configured resource;
selecting an intersection of the first set of logical channels and the second set of logical channels as a target set of logical channels that may use the scheduling grant.
Wherein the processor is further configured to:
selecting a logical channel with an available token Bj larger than 0 in the token bucket from the target logical channel set, and sorting the selected logical channels according to a priority descending order;
sequentially allocating resources meeting the PBR requirement for the logic channels of the sequenced Uu interface according to the prioritized bit rate PBR;
updating the Bj corresponding to each logic channel according to the resource distributed by each logic channel;
if the resources are remained after the resources are distributed according to the PBR, the resources are distributed to the remaining data of each logic channel again according to the descending order of the priority of the logic channel until the resources are exhausted or no data needs to be distributed.
Wherein the processor is further configured to:
further screening the target logic channel set, selecting a target logic channel of a direct communication interface with the highest priority, and selecting a logic channel subset which is the same as a communication target corresponding to the target logic channel in the target logic channel set; the logical channel subset comprises at least one logical channel of the direct communication interface;
sorting the logical channels in the logical channel subset according to a descending order of priority;
and sequentially allocating resources for the logical channels of the sequenced direct communication interfaces until the resources are exhausted or until all the logical channels in the logical channel subset are allocated with the resources.
An embodiment of the present invention further provides an apparatus for organizing MAC PDUs in a media access control data unit, including:
a receiving module, configured to receive multiple sets of preconfigured resources configured by a network side device, and determine a mapping relationship between a logical channel and the preconfigured resources according to a service characteristic of the logical channel of the terminal;
and the organizing module is used for limiting and organizing the MAC PDU according to the mapping relation and the logical channel corresponding to the logical channel.
An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the steps of the method for organizing MAC PDUs as described above are implemented.
The technical scheme of the invention at least has the following beneficial effects:
in the method, the device and the terminal for organizing the MAC PDU of the embodiment of the invention, when the terminal receives a plurality of sets of pre-configured resources, the terminal determines the mapping relation between the logical channel and the pre-configured resources according to the service characteristics of the current logical channel and restricts organizing the MAC PDU according to the mapping relation and the logical channel corresponding to the logical channel.
Drawings
Fig. 1 is a flowchart illustrating steps of a method for organizing MAC PDUs according to an embodiment of the present invention;
fig. 2 is a schematic interaction diagram of a Uu interface in the method for organizing MAC PDUs according to the MAC PDU in the embodiment of the present invention;
fig. 3 is a schematic interaction diagram of a direct communication interface in an organization method of a MAC PDU according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a terminal according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of an apparatus for organizing MAC PDUs according to an embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, an embodiment of the present invention provides a method for organizing MAC PDUs, which is applied to a terminal and includes:
and step 11, receiving a plurality of sets of pre-configured resources configured by the network side equipment, and determining a mapping relation between the logical channel and the pre-configured resources according to the service characteristics of the logical channel of the terminal.
In this step, the service characteristics of the logical channel at least include: service period, packet size. Determining a mapping relationship between a logical channel and a pre-configured resource according to the service characteristics of the logical channel of the terminal specifically comprises: determining a pre-configured resource allowed to be used by the logical channel according to the service characteristics of the logical channel; i.e. there is a mapping relationship between the logical channel and the pre-configured resources that the logical channel allows to use. For example, the service period of the logical channel is required to match the period of the pre-configured resource, and the packet size is required to match the TB (transport block) that the pre-configured resource can carry.
It should be noted that the preconfigured resource refers to a periodic resource preconfigured for the terminal by the network side device, and is specifically divided into a Type1 preconfigured resource and a Type 2 preconfigured resource, where Type1 specifically refers to a location, a period, and the like of the resource configured for the terminal by the network through the radio resource control RRC signaling, and the preconfigured resource does not need to be activated by explicit signaling; type 2 is a period, RNTI (Radio Network temporary Identity ), etc. that the Network configures the terminal with the preconfigured resource through RRC signaling, but the specific time/frequency resource is carried by a PDCCH (Physical Downlink Control Channel) of the preconfigured resource activation signaling.
And step 12, organizing the MAC PDU according to the mapping relation and the logical channel limit corresponding to the logical channel.
Preferably, in the foregoing embodiment of the present invention, the preconfigured resource includes: pre-configured resources of a first Type1 and/or pre-configured resources of a second Type 2.
Preferably, in the foregoing embodiment of the present invention, the logical channel includes: logical channels of the Uu interface and/or logical channels of the direct communication interface.
Preferably, in the above embodiment of the present invention, when the logical channel is a logical channel of a Uu interface, the preconfigured resource is: pre-configured resources of a Uu interface; and/or, in case that the logical channel is a logical channel of a direct communication interface, the preconfigured resource is: pre-configured resources of the direct communication interface.
Briefly, the pre-configured resources include at least one of:
pre-configuration resources of Type1 of the Uu interface;
pre-configured resource of Type 2 of Uu interface,
A pre-configured resource of Type1 of the direct communication interface;
a pre-configured resource of Type 2 of the direct communication interface;
pre-configured resources of a Uu interface;
pre-configured resources of the direct communication interface.
As a preferred embodiment, the organizing the MAC PDU according to the mapping relationship and the logical channel restriction corresponding to the logical channel includes:
aiming at scheduling permission of which the scheduled resource is a pre-configured resource, selecting a target logical channel set which can use the scheduling permission according to the mapping relation and the logical channel limit corresponding to the logical channel; the target set of logical channels comprises at least one logical channel;
and allocating resources to the logical channels contained in the target logical channel set, and organizing the MAC PDU.
Preferably, the selecting, for a scheduling grant of which the scheduled resource is a pre-configured resource, a target logical channel set that can use the scheduling grant according to the mapping relationship and the logical channel restriction corresponding to the logical channel includes:
selecting, for each scheduling grant, a first set of logical channels that satisfies a logical channel constraint corresponding to the logical channel;
aiming at the scheduling permission that the scheduled resource is a pre-configured resource, selecting a second logic channel set which allows the pre-configured resource to be used according to the mapping relation;
selecting an intersection of the first set of logical channels and the second set of logical channels as a target set of logical channels that may use the scheduling grant.
For the Uu interface, the scheduling grant is an uplink scheduling grant, i.e., UL grant.
Then, for each UL grant, selecting a first set of logical channels that can use the Uu interface of the UL grant according to the LCH restrictions;
the resource of the pertinence is a scheduling permission of a pre-configured resource, and a second logic channel set of a Uu interface which allows the pre-configured resource to be used is selected according to a mapping relation; the logical channel contained in the second logical channel set is a logical channel matched with the service characteristics and the pre-configured resources;
further determining a target logical channel set according to the first logical channel set and the second logical channel set; it should be noted that, the order of the step of determining the first logical channel set and the step of determining the second logical channel set is not limited, and may be interchanged or performed simultaneously, and is not specifically limited herein.
For the direct communication interface, the scheduling grant is a direct communication scheduling grant, i.e., a SL grant.
Then, for each SL grant, selecting a first set of logical channels that can use the direct communication interface of the SL grant according to LCH constraints;
the targeted resource is a scheduling permission of a pre-configured resource, and a second logical channel set of a direct communication interface allowing the pre-configured resource to be used is selected according to a mapping relation; the logical channels contained in the second logical channel set are logical channels matched with the service characteristics and the pre-configured resources;
further determining a target logical channel set according to the first logical channel set and the second logical channel set; it should be noted that, the order of the step of determining the first logical channel set and the step of determining the second logical channel set is not limited, and may be interchanged or performed simultaneously, and is not specifically limited herein.
As an optional embodiment, in a case that the logical channel is a logical channel of a Uu interface, the target logical channel set includes at least one logical channel of the Uu interface, and the resource allocation for the logical channel included in the target logical channel set includes:
selecting a logical channel with an available token Bj larger than 0 in the token bucket from the target logical channel set, and sorting the selected logical channels according to a priority descending order;
sequentially allocating resources meeting PBR requirements for the logic channels of the sequenced Uu interfaces according to the prioritized bit rate PBR;
updating the Bj corresponding to each logic channel according to the resource distributed by each logic channel;
if the resources are left after the resources are allocated according to the PBR, allocating the resources to the remaining data of each logic channel again according to the descending order of the priority of the logic channels until the resources are exhausted or no data needs to be allocated.
As another optional embodiment, in a case that the logical channel is a logical channel of a direct communication interface, the target logical channel set includes at least one logical channel of the direct communication interface, and the performing resource allocation on the logical channel included in the target logical channel set includes:
further screening the target logic channel set, selecting a target logic channel of a direct communication interface with the highest priority, and selecting a logic channel subset which is the same as a communication target corresponding to the target logic channel in the target logic channel set; the logical channel subset comprises at least one logical channel of the direct communication interface;
sorting the logical channels in the logical channel subset according to a descending order of priority;
and sequentially allocating resources for the logical channels of the sequenced direct communication interfaces until the resources are exhausted or until all the logical channels in the logical channel subset are allocated with the resources.
In order to more clearly describe the method for organizing MAC PDUs provided in the embodiments of the present invention, the following describes the method for organizing MAC PDUs in detail with reference to two examples.
The first example is as follows: uu interface
As shown in fig. 2, the method for organizing MAC PDUs includes the following steps:
step 21, reporting auxiliary information;
and the terminal reports auxiliary information to the network side equipment, wherein the auxiliary information is used for assisting the network side equipment to configure pre-configuration resources for the Uu interface. The auxiliary information content includes, but is not limited to, the following: LCID (logical channel identification), period, offset, and packet size of the logical channel of the Uu interface of the terminal.
Step 22, pre-configuring resource allocation;
the network side device determines the pre-configured resource allocated to the terminal according to the auxiliary information reported by the terminal in step 21. The pre-configured resource may be, but is not limited to, a Type1 and/or Type 2 Type of pre-configured resource.
Step 23, pre-configuring resource configuration;
the network side equipment sends the configuration information of the pre-configuration resource to the terminal, and the configuration process uses RRC reconfiguration signaling. Specific contents include but are not limited to: an identifier of the preconfigured resource (such as a number of the preconfigured resource), type indication information of the preconfigured resource, a period corresponding to the preconfigured resource, frequency domain resource indication information corresponding to the preconfigured resource, an MCS (Modulation and Coding Scheme), and the like.
Step 24, pre-configuring resource activation;
an optional step, which is only required for preconfigured resources of Type 2, is used to activate preconfigured resources of Type 2.
Step 25, the terminal organizes the Uu interface uplink MAC PDU, i.e. LCP (logical channel priority) procedure, for pre-configured resources.
For the Uu interface, the terminal organizes the MAC PDU according to the mapping relationship and the LCH restrictions corresponding to the logical channel, which specifically includes:
step 1: for each UL grant (uplink scheduling grant), selecting a Uu interface logical channel that can use the UL grant;
step 1-1: and for each UL grant, selecting a Uu interface logical channel which can use the UL grant according to the LCH constraints.
For example, the Uu interface logical channel procedure that can use the UL grant according to LCH restrictions selection is as follows (the following conditions need to be satisfied at the same time), although the introduction of new LCH restrictions parameters is not excluded subsequently.
If the logical channel is configured with allowedSCS-List, then the configured allowedSCS-List is selected to contain the logical channel of SCS of the UL grant;
if the logical channel is configured with maxUSCH-Duration, the configured maxUSCH-Duration is required to be selected to be more than or equal to the logical channel of PUSCH transmission Duration corresponding to the UL grant;
if the UL grant is a Type 1configured grant, then a configured GrantType1Allowed set to TRUE logical channel needs to be selected;
the UL grant is located within the allowedServingCells of the logical channel configuration.
Step 1-2: if the resource scheduled by the UL grant is a pre-configured resource, the terminal further needs to determine a mapping relationship between the logical channel and the pre-configured resource according to the service characteristics of the current Uu interface logical channel, and select a logical channel with service characteristics matched with the pre-configured resource.
The sequence of step 1-1 and step 1-2 is not limited and may be interchanged. The terminal may finally determine a Uu interface logical channel that can use the UL grant through 1-1 and 1-2.
Step 2: performing resource allocation for each UL grant;
and for each UL grant, performing resource allocation on a Uu interface logical channel which can use the UL grant:
allocating resources required by meeting the PBR requirement to all logic channels of Bj (available tokens of the token bucket) >0 according to a descending order of priority;
updating the Bj of each logic channel according to the resource allocation condition of the previous step;
if resources are remained, the resources are allocated to the remaining data of the logic channels according to the descending order of the logic priorities again until the resources are exhausted or no data needs to be allocated.
Step 26, sending MAC PDU;
and transmitting data on the pre-configured resource according to the MAC PDU organized in the step 5.
Example two: direct communication interface (SL interface)
As shown in fig. 3, the method for organizing MAC PDUs includes the following steps:
step 31, reporting auxiliary information;
and the terminal reports auxiliary information to the network side equipment, wherein the auxiliary information is used for assisting the network side equipment to configure pre-configuration resources for the SL interface. The auxiliary information content includes, but is not limited to, the following: LCID (logical channel identification), period, offset, packet size of the logical channel of the SL interface of the terminal.
Step 32, pre-configuring resource allocation;
the network side device determines the pre-configured resource allocated to the terminal according to the auxiliary information reported by the terminal in step 31. The pre-configured resource may be, but is not limited to, a Type1 and/or Type 2 Type of pre-configured resource.
Step 33, pre-configuring resource configuration;
the network side equipment sends the configuration information of the pre-configuration resource to the terminal, and the configuration process uses RRC reconfiguration signaling. Specific contents include but are not limited to: an identifier of the preconfigured resource (such as a number of the preconfigured resource), type indication information of the preconfigured resource, a period corresponding to the preconfigured resource, frequency domain resource indication information corresponding to the preconfigured resource, an MCS (Modulation and Coding Scheme), and the like.
Step 34, pre-configuring resource activation;
an optional step, which is only required for preconfigured resources of Type 2, is to activate the preconfigured resources of Type 2.
In step 35, the terminal organizes the SL interface uplink MAC PDU, i.e. LCP (logical channel priority) procedure, for pre-configured resources.
For the SL interface, the terminal organizes the MAC PDU according to the mapping relationship and the LCH restrictions corresponding to the logical channels, which specifically includes:
step 1: selecting, for each SL grant (direct communication scheduling grant), a logical channel that can use a direct communication interface of the SL grant;
step 1-1: for each SL grant, selecting logical channels according to LCH constraints that can use the direct communication interface of the SL grant.
For example, the procedure of selecting logical channels of the direct communication interface that can use the SL grant according to LCH restrictions is as follows (the following conditions need to be satisfied at the same time), although the introduction of new LCH restrictions parameters for the direct communication interface is not excluded subsequently.
If the logical channel is configured with allowedSCS-List, then the configured allowedSCS-List needs to be selected to contain the logical channel of SCS index of the UL grant;
if the logical channel configures the maximum TTI length allowed to be used by the SL interface, the logical channel with the configured maximum TTC length allowed to be used being greater than or equal to the TTI length corresponding to the UL grant needs to be selected;
if the logical channel is configured with a pre-configured resource list allowed to be used, a logical channel containing a pre-configured resource identifier corresponding to the UL grant in the configured pre-configured resource list allowed to be used needs to be selected;
step 1-2: if the resource scheduled by the SL grant is a pre-configured resource, the terminal also needs to determine the mapping relationship between the logical channel and the pre-configured resource according to the service characteristics of the logical channel of the current direct communication interface, and selects the logical channel matched with the service characteristics and the pre-configured resource.
The sequence of step 1-1 and step 1-2 is not limited and may be interchanged. The terminal can finally determine the direct communication interface logical channel which can use the SL grant through 1-1 and 1-2.
Step 2: performing resource allocation for each SL grant;
step 2-1: the logical channels of the direct communication interface selected in the step 1 are further screened, a target logical channel of the direct communication interface with the highest priority is selected, and a logical channel subset which is the same as the communication target corresponding to the target logical channel is selected from the target logical channel set; the logical channel subset comprises at least one logical channel of the direct communication interface; sorting the logical channels in the logical channel subset according to a descending order of priority;
and 2-2, sequentially allocating resources to the logic channels of the direct communication interfaces according to the descending order determined in the step 2-1. Until the resources are exhausted, or the data of all logical channels corresponding to the direct communication target identification are allocated with the resources.
Step 36, sending MAC PDU;
and transmitting data on the pre-configuration resource according to the MAC PDU organized in the step 5.
In summary, in the above embodiments of the present invention, when the terminal receives multiple sets of preconfigured resources, the terminal determines the mapping relationship between the logical channel and the preconfigured resources according to the service characteristics of the current logical channel, and organizes the MAC PDU according to the mapping relationship and the logical channel restriction corresponding to the logical channel.
As shown in fig. 4, an embodiment of the present invention further provides a terminal, including: the transceiver 420 is configured to receive multiple sets of preconfigured resources configured by a network-side device, and determine a mapping relationship between a logical channel and the preconfigured resources according to a service characteristic of the logical channel of the terminal;
the processor 400 is used for reading the program in the memory and executing the following processes: and organizing the MAC PDU according to the mapping relation and the logical channel limit corresponding to the logical channel.
Optionally, in the foregoing embodiment of the present invention, the preconfigured resource includes: pre-configured resources of a first Type1 and/or pre-configured resources of a second Type 2.
Optionally, in the foregoing embodiment of the present invention, the logical channel includes: logical channels of the Uu interface and/or logical channels of the direct communication interface.
Optionally, in the above embodiment of the present invention, when the logical channel is a logical channel of a Uu interface, the preconfigured resource is: pre-configured resources of a Uu interface; and/or the presence of a gas in the atmosphere,
in the case that the logical channel is a logical channel of a direct communication interface, the preconfigured resource is: pre-configured resources of the direct communication interface.
Optionally, in the foregoing embodiment of the present invention, the processor 400 is further configured to:
aiming at scheduling permission that the scheduled resource is a pre-configured resource, selecting a target logical channel set which can use the scheduling permission according to the mapping relation and the logical channel limit corresponding to the logical channel; the target set of logical channels comprises at least one logical channel;
and allocating resources to the logical channels contained in the target logical channel set, and organizing the MAC PDU.
Optionally, in the foregoing embodiment of the present invention, the processor 400 is further configured to:
selecting, for each scheduling grant, a first set of logical channels that satisfies a logical channel constraint corresponding to the logical channel;
selecting a second logical channel set allowing to use the pre-configured resource according to the mapping relation aiming at the scheduling permission that the scheduled resource is the pre-configured resource;
selecting an intersection of the first set of logical channels and the second set of logical channels as a target set of logical channels that may use the scheduling grant.
Optionally, in the foregoing embodiment of the present invention, the processor 400 is further configured to:
selecting a logical channel with an available token Bj larger than 0 in the token bucket from the target logical channel set, and sorting the selected logical channels according to a priority descending order;
sequentially allocating resources meeting the PBR requirement for the logic channels of the sequenced Uu interface according to the prioritized bit rate PBR;
updating the Bj corresponding to each logic channel according to the resource distributed by each logic channel;
if the resources are left after the resources are allocated according to the PBR, allocating the resources to the remaining data of each logic channel again according to the descending order of the priority of the logic channels until the resources are exhausted or no data needs to be allocated.
Optionally, in the foregoing embodiment of the present invention, the processor 400 is further configured to:
further screening the target logic channel set, selecting a target logic channel of a direct communication interface with the highest priority, and selecting a logic channel subset which is the same as a communication target corresponding to the target logic channel in the target logic channel set; the logical channel subset comprises logical channels of at least one direct communication interface;
sorting the logical channels in the logical channel subset according to a descending order of priority;
and sequentially allocating resources for the logical channels of the sequenced direct communication interfaces until the resources are exhausted or until all the logical channels in the logical channel subset are allocated with the resources.
In summary, in the above embodiments of the present invention, when the terminal receives multiple sets of preconfigured resources, the terminal determines the mapping relationship between the logical channel and the preconfigured resources according to the service characteristics of the current logical channel, and organizes the MAC PDU according to the mapping relationship and the logical channel restriction corresponding to the logical channel.
It should be noted that, the terminal provided in the embodiments of the present invention is a terminal capable of executing the above method for organizing MAC PDUs, and all embodiments of the above method for organizing MAC PDUs are applicable to the terminal, and can achieve the same or similar beneficial effects.
As shown in fig. 5, an embodiment of the present invention further provides an apparatus for organizing MAC PDUs, including:
a receiving module 51, configured to receive multiple sets of preconfigured resources configured by a network side device, and determine a mapping relationship between a logical channel and the preconfigured resources according to service characteristics of the logical channel of the terminal;
and an organizing module 52, configured to organize the MAC PDU according to the mapping relationship and the logical channel restriction corresponding to the logical channel.
Optionally, in the foregoing embodiment of the present invention, the preconfigured resource includes: pre-configured resources of a first Type1 and/or pre-configured resources of a second Type 2.
Optionally, in the above embodiment of the present invention, the logical channel includes: logical channels of the Uu interface and/or logical channels of the direct communication interface.
Optionally, in the above embodiment of the present invention, when the logical channel is a logical channel of a Uu interface, the preconfigured resource is: pre-configured resources of a Uu interface; and/or the presence of a gas in the gas,
in the case that the logical channel is a logical channel of a direct communication interface, the preconfigured resource is: pre-configured resources of the direct communication interface.
Optionally, in the above embodiment of the present invention, the organization module includes:
a first organizing submodule, configured to select, for a scheduling grant of a scheduled resource, which is a pre-configured resource, a target logical channel set that can use the scheduling grant according to the mapping relationship and a logical channel constraint corresponding to the logical channel; the target set of logical channels comprises at least one logical channel;
and the second organizing sub-module is used for carrying out resource allocation on the logical channels contained in the target logical channel set and organizing the MAC PDU.
Optionally, in the above embodiment of the present invention, the first organization sub-module includes:
a first selection unit, configured to select, for each scheduling grant, a first logical channel set that satisfies a logical channel constraint corresponding to a logical channel;
a second selecting unit, configured to select, according to the mapping relationship, a second logical channel set that allows use of a pre-configured resource for a scheduling grant of the pre-configured resource for a scheduled resource;
a third selecting unit, configured to select an intersection of the first logical channel set and the second logical channel set as a target logical channel set that can use the scheduling grant.
Optionally, in the foregoing embodiment of the present invention, when the logical channel is a logical channel of a Uu interface, the target logical channel set includes at least one logical channel of the Uu interface, and the second organization sub-module includes:
the first sequencing unit is used for selecting a logical channel with an available token Bj larger than 0 in the token bucket from the target logical channel set and sequencing the selected logical channels according to a descending order of priority;
the first allocation unit is used for allocating resources meeting PBR requirements for the logic channels of the sequenced Uu interfaces in sequence according to the prioritized bit rate PBR;
the updating unit is used for updating the Bj corresponding to each logic channel according to the resource distributed by each logic channel;
and the second allocation unit is used for allocating resources to the remaining data of each logic channel again according to the descending order of the priority of the logic channels if the resources remain after the resources are allocated according to the PBR until the resources are exhausted or no data needs to be allocated.
Optionally, in the above embodiment of the present invention, when the logical channels are logical channels of a direct communication interface, the second organizing submodule, where a target logical channel set includes at least one logical channel of the direct communication interface, includes:
the screening unit is used for further screening the target logic channel set, selecting a target logic channel of the direct communication interface with the highest priority, and selecting a logic channel subset which is the same as a communication target corresponding to the target logic channel in the target logic channel set; the logical channel subset comprises at least one logical channel of the direct communication interface;
the second sorting unit is used for sorting the logical channels in the logical channel subset according to a descending order of priority;
and the third allocation unit is used for sequentially allocating resources to the sequenced logical channels of the direct communication interface until the resources are exhausted or until all the logical channels in the logical channel subset are allocated with the resources.
In summary, in the above embodiments of the present invention, when the terminal receives multiple sets of preconfigured resources, the terminal determines the mapping relationship between the logical channel and the preconfigured resources according to the service characteristics of the current logical channel, and organizes the MAC PDU according to the mapping relationship and the logical channel restriction corresponding to the logical channel.
It should be noted that the MAC PDU organizing apparatus provided in the embodiments of the present invention is an apparatus capable of executing the above MAC PDU organizing method, and all embodiments of the above MAC PDU organizing method are applicable to the apparatus and can achieve the same or similar beneficial effects.
An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when executed by a processor, the computer program implements each process of the above-described method for organizing MAC PDUs of a MAC PDU, and can achieve the same technical effect, and is not described herein again to avoid repetition. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a component of' 8230; \8230;" does not exclude the presence of another like element in a process, method, article, or apparatus that comprises the element.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (16)
1. A method for organizing media access control data unit (MAC PDU) is applied to a terminal, and is characterized by comprising the following steps:
receiving a plurality of sets of pre-configured resources configured by network side equipment, and determining a mapping relation between a logical channel and the pre-configured resources according to the service characteristics of the logical channel of the terminal;
organizing MAC PDU according to the mapping relation and the logical channel limit corresponding to the logical channel;
the restricting and organizing the MAC PDU according to the mapping relation and the logical channel corresponding to the logical channel includes:
aiming at scheduling permission that the scheduled resource is a pre-configured resource, selecting a target logical channel set which can use the scheduling permission according to the mapping relation and the logical channel limit corresponding to the logical channel; the target set of logical channels comprises at least one logical channel;
and allocating resources to the logical channels contained in the target logical channel set, and organizing the MAC PDU.
2. The method of claim 1, wherein the pre-configured resources comprise: pre-configured resources of a first Type1 and/or pre-configured resources of a second Type 2.
3. The method of claim 1, wherein the logical channel comprises: logical channels of the Uu interface and/or logical channels of the direct communication interface.
4. The method of claim 3,
when the logical channel is a logical channel of a Uu interface, the preconfigured resource is: pre-configured resources of a Uu interface; and/or the presence of a gas in the gas,
in the case that the logical channel is a logical channel of a direct communication interface, the preconfigured resource is: pre-configured resources of the direct communication interface.
5. The method of claim 1, wherein selecting a target set of logical channels that can use the scheduling grant according to the mapping relationship and logical channel restrictions corresponding to the logical channels for scheduling grants of which the scheduled resources are pre-configured resources comprises:
selecting, for each scheduling grant, a first set of logical channels that satisfies a logical channel constraint corresponding to the logical channel;
aiming at the scheduling permission that the scheduled resource is a pre-configured resource, selecting a second logic channel set which allows the pre-configured resource to be used according to the mapping relation;
selecting an intersection of the first set of logical channels and the second set of logical channels as a target set of logical channels that may use the scheduling grant.
6. The method according to claim 5, wherein in a case that the logical channel is a logical channel of a Uu interface, the target logical channel set includes at least one logical channel of the Uu interface, and the performing resource allocation on the logical channel included in the target logical channel set includes:
selecting a logical channel with an available token Bj larger than 0 in the token bucket from the target logical channel set, and sorting the selected logical channels according to a priority descending order;
sequentially allocating resources meeting the PBR requirement for the logic channels of the sequenced Uu interface according to the prioritized bit rate PBR;
updating the Bj corresponding to each logic channel according to the resource distributed by each logic channel;
if the resources are left after the resources are allocated according to the PBR, allocating the resources to the remaining data of each logic channel again according to the descending order of the priority of the logic channels until the resources are exhausted or no data needs to be allocated.
7. The method according to claim 5, wherein in a case that the logical channel is a logical channel of a direct communication interface, the target logical channel set includes at least one logical channel of the direct communication interface, and the performing resource allocation on the logical channel included in the target logical channel set includes:
further screening a target logic channel set, selecting a target logic channel of a direct communication interface with the highest priority, and selecting a logic channel subset which is the same as a communication target corresponding to the target logic channel from the target logic channel set; the logical channel subset comprises at least one logical channel of the direct communication interface;
sorting the logical channels in the logical channel subset according to a descending order of priority;
and sequentially allocating resources to the sequenced logical channels of the direct communication interface until the resources are exhausted or until all the logical channels in the logical channel subset are allocated with the resources.
8. A terminal, comprising: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor; it is characterized in that the preparation method is characterized in that,
the transceiver is used for receiving a plurality of sets of pre-configured resources configured by network side equipment and determining a mapping relation between a logical channel and the pre-configured resources according to the service characteristics of the logical channel of the terminal;
the processor is used for reading the program in the memory and executing the following processes: organizing MAC PDU according to the mapping relation and the logical channel limit corresponding to the logical channel;
the processor is further configured to:
aiming at scheduling permission of which the scheduled resource is a pre-configured resource, selecting a target logical channel set which can use the scheduling permission according to the mapping relation and the logical channel limit corresponding to the logical channel; the target set of logical channels comprises at least one logical channel;
and allocating resources to the logical channels contained in the target logical channel set, and organizing the MAC PDU.
9. The terminal of claim 8, wherein the pre-configured resources comprise: pre-configured resources of a first Type1 and/or pre-configured resources of a second Type 2.
10. The terminal of claim 8, wherein the logical channel comprises: logical channels of the Uu interface and/or logical channels of the direct communication interface.
11. The terminal of claim 10,
when the logical channel is a logical channel of a Uu interface, the preconfigured resource is: pre-configured resources of a Uu interface; and/or the presence of a gas in the gas,
in the case that the logical channel is a logical channel of a direct communication interface, the preconfigured resource is: pre-configured resources of the direct communication interface.
12. The terminal of claim 8, wherein the processor is further configured to:
for each scheduling grant, selecting a first set of logical channels that satisfy logical channel restrictions corresponding to the logical channels;
selecting a second logical channel set allowing to use the pre-configured resource according to the mapping relation aiming at the scheduling permission that the scheduled resource is the pre-configured resource;
selecting an intersection of the first set of logical channels and the second set of logical channels as a target set of logical channels that may use the scheduling grant.
13. The terminal of claim 12, wherein the processor is further configured to:
selecting a logical channel with an available token Bj larger than 0 in the token bucket from the target logical channel set, and sorting the selected logical channels according to a priority descending order;
sequentially allocating resources meeting the PBR requirement for the logic channels of the sequenced Uu interface according to the prioritized bit rate PBR;
updating the Bj corresponding to each logic channel according to the resource distributed by each logic channel;
if the resources are remained after the resources are distributed according to the PBR, the resources are distributed to the remaining data of each logic channel again according to the descending order of the priority of the logic channel until the resources are exhausted or no data needs to be distributed.
14. The terminal of claim 12, wherein the processor is further configured to:
further screening a target logic channel set, selecting a target logic channel of a direct communication interface with the highest priority, and selecting a logic channel subset which is the same as a communication target corresponding to the target logic channel from the target logic channel set; the logical channel subset comprises logical channels of at least one direct communication interface;
sorting the logical channels in the logical channel subset according to a descending order of priority;
and sequentially allocating resources for the logical channels of the sequenced direct communication interfaces until the resources are exhausted or until all the logical channels in the logical channel subset are allocated with the resources.
15. An apparatus for organizing MAC PDUs, applied to a terminal, comprising:
a receiving module, configured to receive multiple sets of preconfigured resources configured by a network side device, and determine a mapping relationship between a logical channel and the preconfigured resources according to a service characteristic of the logical channel of the terminal;
the organizing module is used for limiting and organizing the MAC PDU according to the mapping relation and the logical channel corresponding to the logical channel;
the organization module is further to:
aiming at scheduling permission of which the scheduled resource is a pre-configured resource, selecting a target logical channel set which can use the scheduling permission according to the mapping relation and the logical channel limit corresponding to the logical channel; the target set of logical channels comprises at least one logical channel;
and allocating resources to the logical channels contained in the target logical channel set, and organizing the MAC PDU.
16. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method of organizing medium access control data units, MAC PDUs, according to any of the claims 1 to 7.
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