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A.2.1.5 In-band emissions model
A modified version of in-band emissions defined in Section 6.5.2.3 of 3GPP TS 36.101 [5] should be used for simulation purposes for SC-FDMA waveforms. Table 6.5.2.3.1-1 in [5] is modfied to:
Table A.2.1.5-1: In-band emissions for simulations
Parameter description General Unit Limit (Note 1) Applicable Frequencies max??25?10?log10(NRB/LCRB)?X,dB -28-Y -25-Y -25-Y -28-Z -25-Z -25-Z -20-Z -10-Z max{20?log10EVM?3?5?(?RB,i?1)/LCRB,i}?W,i?1,...,num_clusters,?57dBm/180kHz?PRB?X?Image frequencies when carrier center frequency < 1 GHz and Output power > 10 dBm Image frequencies when carrier center frequency < 1 GHz and Output power ≤ 10 dBm Image frequencies when carrier center frequency ≥ 1 GHz Output power > 10 dBm and carrier center frequency < 1 GHz Output power > 10 dBm and carrier center frequency ≥ 1 GHz 0 dBm ≤ Output power ≤10 dBm -30 dBm ≤ Output power ≤ 0 dBm -40 dBm ? Output power < -30 dBm Any non-allocated (Note 2) IQ Image dB Image frequencies (Notes 2, 3) Carrier leakage dBc Carrier frequency (Notes 4, 5) NOTE 1: NOTE 2: NOTE 3: NOTE 4: NOTE 5: NOTE 6: NOTE 7: NOTE 8: NOTE 9: NOTE 10: An in-band emissions combined limit is evaluated in each non-allocated RB. For each such RB, the minimum requirement is calculated as the higher of PRB - 30 dB-X and the power sum of all limit values (General, IQ Image or Carrier leakage) that apply. PRB is defined in Note 10. The measurement bandwidth is 1 RB and the limit is expressed as a ratio of measured power in one non-allocated RB to the measured average power per allocated RB, where the averaging is done across all allocated RBs. The applicable frequencies for this limit are those that are enclosed in the reflection of the each allocated RB, based on symmetry with respect to the centre carrier frequency, but excluding any allocated RBs. The measurement bandwidth is 1 RB and the limit is expressed as a ratio of measured power in one non-allocated RB to the measured total power in all allocated RBs. The applicable frequencies for this limit are those that are enclosed in the RBs containing the DC frequency if NRB is odd, or in the two RBs immediately adjacent to the DC frequency if NRB is even, but excluding any allocated RB. LCRB,i is the number of allocated RBs of the ith cluster in case of multi-cluster transmission. The overall transmission bandwidth LCRB is given as the sum of the number of allocated RBs of all clusters NRB is the Transmission Bandwidth Configuration EVM is the limit specified in Table 6.5.2.1.1-1 for the modulation format used in the allocated RBs. ?RB is the starting frequency offset between the allocated RB and the measured non-allocated RB (e.g. ?RB?1 or ?RB??1 for the first adjacent RB outside of the any allocated RB. PRB is the transmitted power per 180 kHz in allocated RBs, measured in dBm. Assumptions on value of W,X,Y, Z for single cluster transmissions, i.e., num_cluster = 1: [0,0,0,0] dB and [3,6,3,3] dB.
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Release 12 46 3GPP TR 36.843 V12.0.1 (2014-03)
A.2.1.6 Power consumption model
Following power consumption model shall be used. - Sleep power = 0.01 unit per sub-frame - RX Power = 1 unit per sub-frame - TX power
- 20 unit per sub-frame for 31 dBm - 1 unit per sub-frame for 0 dBm and below
- Linearly scaled with transmit power between 1mW and 10^3.1mW - Assume 8 sub-frames are accumulated for synchronization with WAN - Synchronization is assumed to be reliable for 0.5s - GPS power = 0.08 unit per sub-frame
- Average power consumption when GPS is used - Always on independently of other communications
This model is valid for both in-coverage, partial-coverage and out-of-coverage scenarios. Same values are to be used for D2D discovery, D2D communication, WAN signaling for D2D and non-D2D-related WAN signaling.
While stating power consumption state the number of sub-frames assumed for each type of power usage.
Paging cycle of 1.28 seconds is assumed.
A.2.2 System level simulator calibration
A.3 Detailed simulation results
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Release 12 47 3GPP TR 36.843 V12.0.1 (2014-03)
A.4 Public Safety ProSe Communication Use Cases
This is an informative appendix included for providing background on the use cases discussed in the present document. In this appendix, the input provided in R1-133186 [11] is included based on ProSe Communication definitions in 3GPP TS 22.278 [10], that read as:
ProSe Communication: a communication between two or more ProSe-enabled UEs in proximity by means of a ProSe Communication path. Unless explicitly stated otherwise, the term \the following:
- - ProSe E-UTRA Communication between only two ProSe-enabled UEs; or
- - ProSe Group Communication or ProSe Broadcast Communication among Public Safety ProSe-enabled UEs; or - - ProSe-assisted WLAN direct communication.
ProSe E-UTRA Communication: a ProSe Communication using a ProSe E-UTRA Communication path. ProSe Group Communication: a one-to-many ProSe E-UTRA Communication, between more than two Public Safety ProSe-enabled UEs in proximity, by means of a common ProSe E-UTRA Communication path established between the Public Safety ProSe-enabled UEs.
ProSe Broadcast Communication: a one-to-all ProSe E-UTRA Communication, between all authorized Public Safety ProSe-enabled UEs in proximity, by means of a common ProSe E-UTRA Communication Path established between these Public Safety UEs.
A.4.1 Typical Public Safety Use Cases and Scenarios of ProSe
Communication
According to definitions and requirements in 3GPP TS 22.278 [10], Device-to-Device (D2D) ProSe Communication: (1) is directly between Public Safety ProSe-enabled UEs using E-UTRA regardless of whether or not a priori ProSe Discovery is used, and (2) can be autonomously enabled by Public Safety users when authorized. This section identifies typical public safety use cases of D2D ProSe Communication.
A.4.1.1 General Description of Public Safety ProSe Communication
Scenarios
PTT voice is the most critical means of communications for first responders in emergency situations and cannot be
compromised. Although the focus of applications over D2D ProSe Communication is PTT voice communications, other forms of ProSe Communication applications are important too. In [12], general descriptions of scenarios for PTT off-network communications are following:
\safety voice and data, there are many situations where voice and data communications will be required in areas where the NPSBN is not available. NPSBN Users (NPSBN-U) may be outside of the range of the fixed network, such as first responders in a rural area assisting in a response to a plane crash or police officers inside a residence responding to a domestic issue. Off-network voice communications must be immediately accessible to users in the absence of the
NPSBN. This includes areas and locations where the ability to access non-terrestrial communications can be impaired such as within building and other enclosed areas where non-terrestrial communications may not be available.
Additionally, there may be times when users may wish to communicate off-network. Today, firefighters often join a local communications network, which does not leverage the fixed network, but rather, relies on either direct communications between the user devices or communications via a local repeater on-scene. Firefighters can voluntarily leave the fixed network either due to the unpredictable coverage of the fixed network, or if the coverage of direct communications or the local repeater is well known, based on experience.
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There will be occasions where a user may be within network coverage and will need to communicate with users who are on the network and off-network, such as an Incident Commander (IC) supporting fire response activities. These users must be able to communicate to users on the fixed network, such as dispatch, as well as the local users who are off-network or when it is desirable to provide voice, data and video connections between users without connection to the network even if within network coverage.
A relay function is critical for off-network communications when NPSBN coverage is not sufficient to support the public safety mission. In the case of firefighters who are responding to a wildfire while outside of the coverage of the fixed network, if one user becomes encircled by the wildfire and is beyond the range of the IC, but within the range of another device that can act as a relay, the endangered firefighter can still update his status to the IC.\
A.4.1.2 Typical Use Cases of Public Safety ProSe Communication
The D2D ProSe Communication are \via the network infrastructure as noted above. D2D ProSe Communication is a critical public safety need overall. For D2D ProSe Group Communication involving more than two Public Safety ProSe-enabled UEs, the Incident Commander will assign team members to specific groups of users (detailed to perform a specific task) where each group is having independent ProSe Group Communication. This bifurcating of each team allows the incident
commander to manage these groups more effectively and ensures that their communications are exclusive/pre-empted to their task. In current Public Safety LMR systems, off-network (Direct Mode) operations are often a method used for on-scene communications, in particular by the Fire Service, whether their existing trunked network is operational and has coverage in this particular area or not.
Furthermore, when a task force is manually switched to off-network (D2D ProSe Group Communication) that has had one or more of its team members move off D2D ProSe Communication-coverage (whether it was intentional or not), if a UE will provide the user an opportunity to determine which users are in- D2D ProSe Communication-coverage at any given time, users could use this capability to determine if the user they need to reach by seeing his status of availability and, if the user is not in- D2D ProSe Communication-coverage, a procedure is triggered to deterministically establish an alternative communication path to try to reach him. Additionally, UEs that are switched to D2D ProSe Communication (while being in-coverage) requires continuous LTE connectivity to EPC for messages, maps, pictures, video exchanges with group communications via the infrastructure LTE network. For those UEs that are out-of -coverage the EPC connectivity is provided by UE-to-Network Relays wherever feasible.
It is noteworthy that in a D2D (off network) environment, the incident commander could configure two users for private communication by setting them up with D2D ProSe E-UTRA Communication in Direct mode. D2D ProSe E-UTRA Communication is necessary and critical to Public Safety, which is mimics the Private Call in today's Land Mobile Radio (LMR) trunked systems. This often is communication between a supervisor and one of the people under his command that is a member of the larger group. One use case could be Team Leader/supervisor of a police group operating off network communicating to a sniper on the roof giving a \moment. They may determine that immediate dialogue might not be beneficial to a larger group during that critical moment. Moreover, this feature is purposely used sparingly and only specific individuals/devices are assigned to D2D ProSe E-UTRA Communication, such that sharing information among the group of incident members is not jeopardized.
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